Class PdfViewerEvents

Represents the event handlers and configurations for the PDF Viewer.

Inheritance

System.Object

PdfViewerEvents

Namespace: Syncfusion.Blazor.SfPdfViewer

Assembly: Syncfusion.Blazor.SfPdfViewer.dll

Syntax

public class PdfViewerEvents : SfBaseComponent

Remarks

This class provides various event-related functionalities for the PDF Viewer component,
allowing users to handle interactions, changes, and actions performed within the viewer.
It is designed to be initialized and used as part of the PDF Viewer lifecycle.

Constructors

PdfViewerEvents()

Declaration

public PdfViewerEvents()

Properties

AddSignature

Triggers when signature is added over the page of the PDF document.

Declaration

public EventCallback<AddSignatureEventArgs> AddSignature { get; set; }

Property Value

Type	Description
Microsoft.AspNetCore.Components.EventCallback<AddSignatureEventArgs>	An event callback function.

AjaxRequestFailed

Triggers when the AJAX request is failed.

Declaration

public EventCallback<AjaxRequestFailureEventArgs> AjaxRequestFailed { get; set; }

Property Value

Type	Description
Microsoft.AspNetCore.Components.EventCallback<AjaxRequestFailureEventArgs>	An event callback function.

AnnotationAdded

Triggers when an annotation is added over the page of the PDF document.

Declaration

public EventCallback<AnnotationAddEventArgs> AnnotationAdded { get; set; }

Property Value

Type	Description
Microsoft.AspNetCore.Components.EventCallback<AnnotationAddEventArgs>	An event callback function.

AnnotationMouseover

Triggers when mouse over the annotation object.

Declaration

public EventCallback<AnnotationMouseoverEventArgs> AnnotationMouseover { get; set; }

Property Value

Type	Description
Microsoft.AspNetCore.Components.EventCallback<AnnotationMouseoverEventArgs>	An event callback function.

AnnotationMoved

Triggers when an annotation is moved over the page of the PDF document.

Declaration

public EventCallback<AnnotationMoveEventArgs> AnnotationMoved { get; set; }

Property Value

Type	Description
Microsoft.AspNetCore.Components.EventCallback<AnnotationMoveEventArgs>	An event callback function.

Remarks

AnnotationMove event is not applicable for text markup annotations.

AnnotationPropertiesChanged

Triggers when the property of the annotation is changed in the page of the PDF document.

Declaration

public EventCallback<AnnotationPropertiesChangeEventArgs> AnnotationPropertiesChanged { get; set; }

Property Value

Type	Description
Microsoft.AspNetCore.Components.EventCallback<AnnotationPropertiesChangeEventArgs>	An event callback function.

AnnotationRemoved

Triggers when an annotation is removed from the page of the PDF document.

Declaration

public EventCallback<AnnotationRemoveEventArgs> AnnotationRemoved { get; set; }

Property Value

Type	Description
Microsoft.AspNetCore.Components.EventCallback<AnnotationRemoveEventArgs>	An event callback function.

AnnotationResized

Triggers when an annotation is resized over the page of the PDF document.

Declaration

public EventCallback<AnnotationResizeEventArgs> AnnotationResized { get; set; }

Property Value

Type	Description
Microsoft.AspNetCore.Components.EventCallback<AnnotationResizeEventArgs>	An event callback function.

Remarks

This event does not applicable for Sticky note annotation.

AnnotationSelected

Triggers when an annotation is selected over the page of the PDF document.

Declaration

public EventCallback<AnnotationSelectEventArgs> AnnotationSelected { get; set; }

Property Value

Type	Description
Microsoft.AspNetCore.Components.EventCallback<AnnotationSelectEventArgs>	An event callback function.

AnnotationUnselected

Triggers when an annotation is unselected over the page of the PDF document.

Declaration

public EventCallback<AnnotationUnselectEventArgs> AnnotationUnselected { get; set; }

Property Value

Type	Description
Microsoft.AspNetCore.Components.EventCallback<AnnotationUnselectEventArgs>	An event callback function.

Examples

   <SfPdfViewer2>
        <PdfViewerEvents AnnotationUnSelected="annotationUnSelected"></PdfViewerEvents>
   </SfPdfViewer2>
 @code {
   public void annotationUnSelected(AnnotationUnSelectEventArgs args)
   {
   }
 }

CommandExecuted

Represents the method to be called when the designated command is invoked.

Declaration

public EventCallback<CommandExecutedEventArgs> CommandExecuted { get; set; }

Property Value

Type	Description
Microsoft.AspNetCore.Components.EventCallback<CommandExecutedEventArgs>	Represents an event callback function.

Created

Triggers when the PdfViewer component is created.

Declaration

public EventCallback<object> Created { get; set; }

Property Value

Type	Description
Microsoft.AspNetCore.Components.EventCallback<System.Object>	An event callback function.

DocumentEdited

Trigger an event when the document getting edited

Declaration

public EventCallback<DocumentEditedEventArgs> DocumentEdited { get; set; }

Property Value

Type	Description
Microsoft.AspNetCore.Components.EventCallback<DocumentEditedEventArgs>	An event callback function

Remarks

Use this property to subscribe to the event that provide a callback function that will be executed when the document edited.

DocumentLoaded

Triggers while loading document into PdfViewer.

Declaration

public EventCallback<LoadEventArgs> DocumentLoaded { get; set; }

Property Value

Type	Description
Microsoft.AspNetCore.Components.EventCallback<LoadEventArgs>	An event callback function.

DocumentLoadFailed

Triggers while loading document got failed in PdfViewer.

Declaration

public EventCallback<LoadFailedEventArgs> DocumentLoadFailed { get; set; }

Property Value

Type	Description
Microsoft.AspNetCore.Components.EventCallback<LoadFailedEventArgs>	An event callback function.

DocumentUnloaded

Triggers while close the document

Declaration

public EventCallback<UnloadEventArgs> DocumentUnloaded { get; set; }

Property Value

Type	Description
Microsoft.AspNetCore.Components.EventCallback<UnloadEventArgs>	An event callback function.

DownloadEnd

Triggers an event when the download actions is finished.

Declaration

public EventCallback<DownloadEndEventArgs> DownloadEnd { get; set; }

Property Value

Type	Description
Microsoft.AspNetCore.Components.EventCallback<DownloadEndEventArgs>	An event callback function.

DownloadStart

Triggers an event when the download action is started.

Declaration

public EventCallback<DownloadStartEventArgs> DownloadStart { get; set; }

Property Value

Type	Description
Microsoft.AspNetCore.Components.EventCallback<DownloadStartEventArgs>	An event callback function.

ExportFailed

Triggers when an export annotations failed in the PDF Viewer.

Declaration

public EventCallback<ExportFailureEventArgs> ExportFailed { get; set; }

Property Value

Type	Description
Microsoft.AspNetCore.Components.EventCallback<ExportFailureEventArgs>	An event callback function.

ExportStarted

Triggers when an exported annotations started in the PDF Viewer.

Declaration

public EventCallback<ExportStartEventArgs> ExportStarted { get; set; }

Property Value

Type	Description
Microsoft.AspNetCore.Components.EventCallback<ExportStartEventArgs>	An event callback function.

ExportSucceed

Triggers when an export annotations succeed in the PDF Viewer.

Declaration

public EventCallback<ExportSuccessEventArgs> ExportSucceed { get; set; }

Property Value

Type	Description
Microsoft.AspNetCore.Components.EventCallback<ExportSuccessEventArgs>	An event callback function.

ExtractTextCompleted

Triggers when an text extraction is completed in the PDF Viewer.

Declaration

public EventCallback<ExtractTextCompletedEventArgs> ExtractTextCompleted { get; set; }

Property Value

Type	Description
Microsoft.AspNetCore.Components.EventCallback<ExtractTextCompletedEventArgs>	An event callback function.

FormFieldAdded

Triggers when a form field is added to the SfPdfViewer2 component.

Declaration

public EventCallback<FormFieldAddedEventArgs> FormFieldAdded { get; set; }

Property Value

Type	Description
Microsoft.AspNetCore.Components.EventCallback<FormFieldAddedEventArgs>	An Microsoft.AspNetCore.Components.EventCallback<> that is invoked when the form field is added.

Remarks

This event provides an instance of the FormFieldAddedEventArgs class,
containing details about the form field that was successfully added.
It is part of the PdfViewerEvents class and can be used to handle post-addition logic or notifications.

Examples

The following example demonstrates how to handle the FormFieldAdded event:

<SfPdfViewer2 @ref="Viewer" Height="100%" Width="100%">
    <PdfViewerEvents FormFieldAdded="@OnFormFieldAdded"></PdfViewerEvents>
</SfPdfViewer2>

@code {
SfPdfViewer2 Viewer;
void OnFormFieldAdded(FormFieldAddedEventArgs args)
{
    // Access details about the added form field
    Console.WriteLine($"Form Field added: {args.Field.Name}");
    // Additional processing logic
}
}

FormFieldAdding

Triggers before a form field addition starts in the SfPdfViewer2 component.

Declaration

public EventCallback<FormFieldAddEventArgs> FormFieldAdding { get; set; }

Property Value

Type	Description
Microsoft.AspNetCore.Components.EventCallback<FormFieldAddEventArgs>	An Microsoft.AspNetCore.Components.EventCallback<> that is invoked before the form field is added.

Remarks

This event provides an instance of the FormFieldAddEventArgs class, offering details about the form field being added. It is part of the PdfViewerEvents class and allows customization before the form field is added.

Examples

The following example demonstrates how to handle the FormFieldAdding event.

<SfPdfViewer2 @ref="Viewer" Height="100%" Width="100%">
    <PdfViewerEvents FormFieldAdding="@OnFormFieldAdding"></PdfViewerEvents>
</SfPdfViewer2>

@code {
SfPdfViewer2 Viewer;
void OnFormFieldAdding(FormFieldAddEventArgs args)
{
    Console.WriteLine($"Form Field going to add: {args.Field.Name}");
    // Additional processing logic
}
}

FormFieldClick

Triggers an event when the form field is clicked.

Declaration

public EventCallback<FormFieldClickArgs> FormFieldClick { get; set; }

Property Value

Type	Description
Microsoft.AspNetCore.Components.EventCallback<FormFieldClickArgs>	An event callback function.

FormFieldDeleted

Triggers when a form field is deleted from the SfPdfViewer2 component.

Declaration

public EventCallback<FormFieldDeletedEventArgs> FormFieldDeleted { get; set; }

Property Value

Type	Description
Microsoft.AspNetCore.Components.EventCallback<FormFieldDeletedEventArgs>	An Microsoft.AspNetCore.Components.EventCallback<> that is invoked when a form field is deleted.

Remarks

The FormFieldDeleted event provides details about the form field that was removed, allowing developers to track deletions and perform necessary actions, such as updating the UI or persisting data.

Examples

<SfPdfViewer2 @ref="Viewer" Height="100%" Width="100%">
    <PdfViewerEvents FormFieldDeleted="@OnFormFieldDeleted"></PdfViewerEvents>
</SfPdfViewer2>

@code {
void OnFormFieldDeleted(FormFieldDeletedEventArgs args)
{
    Console.WriteLine($"Form field deleted: {args.Field.Name}");

    // Implement additional logic, such as logging or UI updates
}
}

FormFieldDoubleClick

Triggers when a form field is double-clicked in the SfPdfViewer2 component.

Declaration

public EventCallback<FormFieldDoubleClickEventArgs> FormFieldDoubleClick { get; set; }

Property Value

Type	Description
Microsoft.AspNetCore.Components.EventCallback<FormFieldDoubleClickEventArgs>	An Microsoft.AspNetCore.Components.EventCallback<> that is invoked when the form field is double-clicked.

Remarks

The FormFieldDoubleClick event provides details about the form field that was double-clicked.
This event can be used to perform actions such as displaying a custom editor or modifying field properties.

Examples

The following example demonstrates how to handle the FormFieldDoubleClick event:

<SfPdfViewer2 @ref="Viewer" Height="100%" Width="100%">
    <PdfViewerEvents FormFieldDoubleClick="@OnFormFieldDoubleClick"></PdfViewerEvents>
</SfPdfViewer2>

@code {
SfPdfViewer2 Viewer;
void OnFormFieldDoubleClick(FormFieldDoubleClickEventArgs args)
{
    // Retrieve details about the double-clicked form field
    Console.WriteLine($"Form field double-clicked: {args.Field.Name}");
    // Additional processing logic
}
}

FormFieldFocusIn

Triggers when a user focuses on a form field in the SfPdfViewer2 component.

Declaration

public EventCallback<FormFieldFocusInEventArgs> FormFieldFocusIn { get; set; }

Property Value

Type	Description
Microsoft.AspNetCore.Components.EventCallback<FormFieldFocusInEventArgs>	An Microsoft.AspNetCore.Components.EventCallback<> that invoked when the form field is focused.

Remarks

The FormFieldFocusIn event provides access to the form field that has gained focus within the SfPdfViewer2 component. This allows handling of specific actions when a form field is focused.

Examples

<SfPdfViewer2 @ref="Viewer" Height="100%" Width="100%">
    <PdfViewerEvents FormFieldFocusIn="@OnFormFieldFocusIn"></PdfViewerEvents>
</SfPdfViewer2>

@code {
SfPdfViewer2 Viewer;
void OnFormFieldFocusIn(FormFieldFocusInEventArgs args)
{
    // Handle the focused form field
    Console.WriteLine($"Form field focused: {args.Field.Name}");
    // Additional processing logic
}
}

FormFieldFocusOut

Triggers when a user moves focus away from a form field in the SfPdfViewer2 component.

Declaration

public EventCallback<FormFieldFocusOutEventArgs> FormFieldFocusOut { get; set; }

Property Value

Type	Description
Microsoft.AspNetCore.Components.EventCallback<FormFieldFocusOutEventArgs>	An Microsoft.AspNetCore.Components.EventCallback<> that invoked when the form field that lost focus.

Remarks

The FormFieldFocusOut event is triggered when a form field loses focus within the SfPdfViewer2 component. This allows developers to perform actions such as validation, data processing, or cleanup when the user moves away from a form field.

Examples

<SfPdfViewer2 @ref="Viewer" Height="100%" Width="100%">
    <PdfViewerEvents FormFieldFocusOut="@OnFormFieldFocusOut"></PdfViewerEvents>
</SfPdfViewer2>

@code {
SfPdfViewer2 Viewer;
void OnFormFieldFocusOut(FormFieldFocusOutEventArgs args)
{
    // Handle the form field losing focus
    Console.WriteLine($"Form field lost focus: {args.Field.Name}");

    // Additional processing logic
}
}

FormFieldMouseEnter

Triggers when the mouse pointer enters a form field in the SfPdfViewer2 component.

Declaration

public EventCallback<FormFieldMouseEnterEventArgs> FormFieldMouseEnter { get; set; }

Property Value

Type	Description
Microsoft.AspNetCore.Components.EventCallback<FormFieldMouseEnterEventArgs>	An Microsoft.AspNetCore.Components.EventCallback<> that invoked when the form field where the mouse entered.

Remarks

The FormFieldMouseEnter event occurs when the user moves the mouse pointer over a form field within the SfPdfViewer2 component. This event can be used to implement hover effects, display tooltips, or perform other UI-related interactions.

Examples

<SfPdfViewer2 @ref="Viewer" Height="100%" Width="100%">
    <PdfViewerEvents FormFieldMouseEnter="@OnFormFieldMouseEnter"></PdfViewerEvents>
</SfPdfViewer2>

@code {
SfPdfViewer2 Viewer;
void OnFormFieldMouseEnter(FormFieldMouseEnterEventArgs args)
{
    // Handle mouse entering the form field
    Console.WriteLine($"Mouse entered form field: {args.Field.Name}");

    // Additional hover-related logic
}
}

FormFieldMouseLeave

Triggers when the mouse pointer leaves a form field in the SfPdfViewer2 component.

Declaration

public EventCallback<FormFieldMouseLeaveEventArgs> FormFieldMouseLeave { get; set; }

Property Value

Type	Description
Microsoft.AspNetCore.Components.EventCallback<FormFieldMouseLeaveEventArgs>	An Microsoft.AspNetCore.Components.EventCallback<> that is invoked when the mouse pointer leaves a form field.

Remarks

The FormFieldMouseLeave event provides information about the form field that the mouse pointer exited. This can be used to implement custom interactions, such as hiding tooltips or resetting field styling.

Examples

<SfPdfViewer2 @ref="Viewer" Height="100%" Width="100%">
    <PdfViewerEvents FormFieldMouseLeave="@OnFormFieldMouseLeave"></PdfViewerEvents>
</SfPdfViewer2>

@code {
void OnFormFieldMouseLeave(FormFieldMouseLeaveEventArgs args)
{
    // Retrieve the form field that the mouse left
    FormFieldInfo fieldInfo = args.Field;
    Console.WriteLine($"Mouse left form field: {fieldInfo.Name}");

    // Implement additional logic
}
}

FormFieldPropertyChanged

Triggers when one or more properties of a form field change in the SfPdfViewer2 component.

Declaration

public EventCallback<FormFieldPropertyChangedEventArgs> FormFieldPropertyChanged { get; set; }

Property Value

Type	Description
Microsoft.AspNetCore.Components.EventCallback<FormFieldPropertyChangedEventArgs>	An Microsoft.AspNetCore.Components.EventCallback<> that invoked when the form field property is changed.

Remarks

The FormFieldPropertyChanged event occurs whenever one or more properties of a form field, such as its value, appearance, or settings, are modified. This event allows developers to track changes and implement custom logic based on user interactions.

Examples

<SfPdfViewer2 @ref="Viewer" Height="100%" Width="100%">
    <PdfViewerEvents FormFieldPropertyChanged="@OnFormFieldPropertyChanged"></PdfViewerEvents>
</SfPdfViewer2>

@code {
void OnFormFieldPropertyChanged(FormFieldPropertyChangedEventArgs args)
{
    // Retrieve the changed properties
    Console.WriteLine($"Form field properties changed: New Value: {args.NewValue}");

    // Implement additional logic based on property changes
}
}

FormFieldResized

Triggers when a form field is resized in the SfPdfViewer2 component.

Declaration

public EventCallback<FormFieldResizedEventArgs> FormFieldResized { get; set; }

Property Value

Type	Description
Microsoft.AspNetCore.Components.EventCallback<FormFieldResizedEventArgs>	An Microsoft.AspNetCore.Components.EventCallback<> that is invoked when a form field is resized.

Remarks

The FormFieldResized event provides information about the resized form field, including its previous and updated dimensions. This allows developers to handle custom resizing logic or restrictions.

Examples

<SfPdfViewer2 @ref="Viewer" Height="100%" Width="100%">
    <PdfViewerEvents FormFieldResized="@OnFormFieldResized"></PdfViewerEvents>
</SfPdfViewer2>

@code {
void OnFormFieldResized(FormFieldResizedEventArgs args)
{
    // Retrieve the resized form field
    FormFieldInfo resizedField = args.Field;
    Console.WriteLine($"Form field resized: {resizedField.Name}");

    // Retrieve old and new sizes
    Bound oldSize = args.OldBounds;
    Bound newSize = args.NewBounds;

    Console.WriteLine($"Old Size: {oldSize.Width}x{oldSize.Height}");
    Console.WriteLine($"New Size: {newSize.Width}x{newSize.Height}");

    // Implement additional logic
}
}

FormFieldSelected

Triggers when select a form field in the SfPdfViewer2 component.

Declaration

public EventCallback<FormFieldSelectedEventArgs> FormFieldSelected { get; set; }

Property Value

Type	Description
Microsoft.AspNetCore.Components.EventCallback<FormFieldSelectedEventArgs>	An Microsoft.AspNetCore.Components.EventCallback<> that invoked when the form field is selected.

Remarks

The FormFieldSelected event allows developers to execute logic when a form field is selected. This can be useful for highlighting the field, displaying additional options, or tracking user interactions.

Examples

<SfPdfViewer2 @ref="Viewer" Height="100%" Width="100%">
    <PdfViewerEvents FormFieldSelected="@OnFormFieldSelected"></PdfViewerEvents>
</SfPdfViewer2>

@code {
void OnFormFieldSelected(FormFieldSelectedEventArgs args)
{
    // Retrieve the selected form field
    Console.WriteLine($"Form field selected: {args.Field.Name}");

    // Implement additional logic
}
}

FormFieldsExported

Triggers after the form fields have been successfully exported in the SfPdfViewer2 component.

Declaration

public EventCallback<FormFieldsExportedEventArgs> FormFieldsExported { get; set; }

Property Value

Type	Description
Microsoft.AspNetCore.Components.EventCallback<FormFieldsExportedEventArgs>	An Microsoft.AspNetCore.Components.EventCallback<> that invoked when the form fields have been successfully exported.

Remarks

The FormFieldsExported event provides information about the exported form fields, allowing developers to handle post-export actions such as logging, notifications, or further processing.

Examples

<SfPdfViewer2 @ref="Viewer" Height="100%" Width="100%">
    <PdfViewerEvents FormFieldsExported="@OnFormFieldsExported"></PdfViewerEvents>
</SfPdfViewer2>

@code {
void OnFormFieldsExported(FormFieldsExportedEventArgs args)
{
    // Handle post-export actions
    Console.WriteLine("Form fields have been successfully exported.");
    // Implement additional logic if needed
}
}

FormFieldsExportFailed

Triggers when the form fields export operation fails in the SfPdfViewer2 component.

Declaration

public EventCallback<FormFieldsExportFailedEventArgs> FormFieldsExportFailed { get; set; }

Property Value

Type	Description
Microsoft.AspNetCore.Components.EventCallback<FormFieldsExportFailedEventArgs>	An Microsoft.AspNetCore.Components.EventCallback<> that invoked when the form fields export operation fails.

Remarks

The FormFieldsExportFailed event is useful for handling errors or issues that occur during the export process. It provides a way to capture and respond to export failures, such as when the export could not be completed due to missing fields, invalid data, or other problems.

Examples

<SfPdfViewer2 @ref="Viewer" Height="100%" Width="100%">
    <PdfViewerEvents FormFieldsExportFailed="@OnFormFieldsExportFailed"></PdfViewerEvents>
</SfPdfViewer2>

@code {
void OnFormFieldsExportFailed(FormFieldsExportFailedEventArgs args)
{
    // Handle the export failure
    Console.WriteLine($"Form fields export failed: {args.ErrorDetails}");
    // Implement error handling logic
}
}

FormFieldsExporting

Triggers when the form fields export process starts in the SfPdfViewer2 component.

Declaration

public EventCallback<FormFieldsExportEventArgs> FormFieldsExporting { get; set; }

Property Value

Type	Description
Microsoft.AspNetCore.Components.EventCallback<FormFieldsExportEventArgs>	An Microsoft.AspNetCore.Components.EventCallback<> that invoked when the form fields export process starts.

Remarks

This event allows developers to execute custom logic before the form fields are exported,
such as modifying data, logging, or displaying a progress indicator. Also, set the Cancel property to true to cancel the export process.

Examples

<SfPdfViewer2 @ref="Viewer" DocumentPath="@DocumentPath" Height="100%" Width="100%">
    <PdfViewerEvents FormFieldsExporting="@OnFormFieldsExporting"></PdfViewerEvents>
</SfPdfViewer2>

@code {
    void OnFormFieldsExporting(FormFieldsExportEventArgs args)
    {
        // Execute logic before form fields export begins
        Console.WriteLine("Form fields export started.");

        // Implement additional logic if needed
    }
}

FormFieldsImported

Triggers after form fields have been successfully imported into the SfPdfViewer2 component.

Declaration

public EventCallback<FormFieldsImportedEventArgs> FormFieldsImported { get; set; }

Property Value

Type	Description
Microsoft.AspNetCore.Components.EventCallback<FormFieldsImportedEventArgs>	An Microsoft.AspNetCore.Components.EventCallback<> that invoked when the form fields have been successfully imported.

Remarks

The FormFieldsImported event is fired once the import process of form fields is complete. Developers can use this event to perform actions or updates after the form fields are successfully imported.

Examples

<SfPdfViewer2 @ref="Viewer" DocumentPath="@DocumentPath" Height="100%" Width="100%">
    <PdfViewerEvents FormFieldsImported="@OnFormFieldsImported"></PdfViewerEvents>
</SfPdfViewer2>

@code {
void OnFormFieldsImported(FormFieldsImportedEventArgs args)
{
    // Handle the post-import event
    Console.WriteLine("Form fields have been successfully imported.");
    // Additional processing logic can go here
}
}

FormFieldsImportFailed

Triggers when the form fields import process fails in the SfPdfViewer2 component.

Declaration

public EventCallback<FormFieldsImportFailedEventArgs> FormFieldsImportFailed { get; set; }

Property Value

Type	Description
Microsoft.AspNetCore.Components.EventCallback<FormFieldsImportFailedEventArgs>	An Microsoft.AspNetCore.Components.EventCallback<> that invoked when the form fields import operation fails.

Remarks

The FormFieldsImportFailed event is triggered when the attempt to import form fields fails. It allows developers to handle import failures by accessing detailed error information.

Examples

<SfPdfViewer2 @ref="Viewer" Height="100%" Width="100%">
    <PdfViewerEvents FormFieldsImportFailed="@OnFormFieldsImportFailed"></PdfViewerEvents>
</SfPdfViewer2>

@code {
void OnFormFieldsImportFailed(FormFieldsImportFailedEventArgs args)
{
    // Handle the import failure
    Console.WriteLine($"Import failed with error details: {args.ErrorDetails}");
    // Implement custom error handling logic
}
}

FormFieldsImporting

Triggers when the form fields import process starts in the SfPdfViewer2 component.

Declaration

public EventCallback<FormFieldsImportEventArgs> FormFieldsImporting { get; set; }

Property Value

Type	Description
Microsoft.AspNetCore.Components.EventCallback<FormFieldsImportEventArgs>	An Microsoft.AspNetCore.Components.EventCallback<> that invoked when the form fields import process starts.

Remarks

This event allows developers to execute custom logic before the form fields are imported,
such as modifying data, logging, or displaying a progress indicator. Also, set the Cancel property to true to cancel the import process.

Examples

<SfPdfViewer2 @ref="Viewer" DocumentPath="@DocumentPath" Height="100%" Width="100%">
    <PdfViewerEvents FormFieldsImporting="@OnFormFieldsImporting"></PdfViewerEvents>
</SfPdfViewer2>

@code {
    void OnFormFieldsImporting(FormFieldsImportEventArgs args)
    {
        // Execute logic before form fields import begins
        Console.WriteLine("Form fields import started.");

        // Implement additional logic if needed
    }
}

FormFieldUnselected

Triggers when a form field is unselected in the SfPdfViewer2 component.

Declaration

public EventCallback<FormFieldUnselectedEventArgs> FormFieldUnselected { get; set; }

Property Value

Type	Description
Microsoft.AspNetCore.Components.EventCallback<FormFieldUnselectedEventArgs>	An Microsoft.AspNetCore.Components.EventCallback<> that invoked when a form field is unselected.

Remarks

The FormFieldUnselected event occurs when a previously selected form field is unselected. This allows developers to execute custom logic when a user or programmatic action deselects a form field.

Examples

<SfPdfViewer2 @ref="Viewer" Height="100%" Width="100%">
    <PdfViewerEvents FormFieldUnselected="@OnFormFieldUnselected"></PdfViewerEvents>
</SfPdfViewer2>

@code {
void OnFormFieldUnselected(FormFieldUnselectedEventArgs args)
{
    Console.WriteLine($"Form field unselected: {args.Field.Name}"); 
    // Implement additional logic
}
}

ImportFailed

Triggers when an imports annotations failed in the PDF document.

Declaration

public EventCallback<ImportFailureEventArgs> ImportFailed { get; set; }

Property Value

Type	Description
Microsoft.AspNetCore.Components.EventCallback<ImportFailureEventArgs>	An event callback function.

ImportStarted

Triggers when an imported annotations started in the PDF document.

Declaration

public EventCallback<ImportStartEventArgs> ImportStarted { get; set; }

Property Value

Type	Description
Microsoft.AspNetCore.Components.EventCallback<ImportStartEventArgs>	An event callback function.

ImportSucceed

Triggers when an imports annotations succeed in the PDF document.

Declaration

public EventCallback<ImportSuccessEventArgs> ImportSucceed { get; set; }

Property Value

Type	Description
Microsoft.AspNetCore.Components.EventCallback<ImportSuccessEventArgs>	An event callback function.

MoveSignature

Triggers when an signature is moved over the page of the PDF document.

Declaration

public EventCallback<MoveSignatureEventArgs> MoveSignature { get; set; }

Property Value

Type	Description
Microsoft.AspNetCore.Components.EventCallback<MoveSignatureEventArgs>	An event callback function.

OnAnnotationDoubleClick

Triggers an event when the annotation is double click.

Declaration

public EventCallback<AnnotationDoubleClickEventArgs> OnAnnotationDoubleClick { get; set; }

Property Value

Type	Description
Microsoft.AspNetCore.Components.EventCallback<AnnotationDoubleClickEventArgs>	An event callback function.

OnHyperlinkClick

Triggers when hyperlink in the PDF Document is clicked

Declaration

public EventCallback<HyperlinkClickEventArgs> OnHyperlinkClick { get; set; }

Property Value

Type	Description
Microsoft.AspNetCore.Components.EventCallback<HyperlinkClickEventArgs>	An event callback function.

OnHyperlinkMouseOver

Triggers when hyperlink in the PDF Document is hovered

Declaration

public EventCallback<HyperlinkMouseOverArgs> OnHyperlinkMouseOver { get; set; }

Property Value

Type	Description
Microsoft.AspNetCore.Components.EventCallback<HyperlinkMouseOverArgs>	An event callback function.

OnPageClick

Triggers when the mouse click is performed over the page of the PDF document.

Declaration

public EventCallback<PageClickEventArgs> OnPageClick { get; set; }

Property Value

Type	Description
Microsoft.AspNetCore.Components.EventCallback<PageClickEventArgs>	An event callback function.

OnTextSearchComplete

Triggers an event when the text search is completed.

Declaration

public EventCallback<TextSearchCompleteEventArgs> OnTextSearchComplete { get; set; }

Property Value

Type	Description
Microsoft.AspNetCore.Components.EventCallback<TextSearchCompleteEventArgs>	An event callback function.

OnTextSearchHighlight

Triggers an event when the text search text is highlighted.

Declaration

public EventCallback<TextSearchHighlightEventArgs> OnTextSearchHighlight { get; set; }

Property Value

Type	Description
Microsoft.AspNetCore.Components.EventCallback<TextSearchHighlightEventArgs>	An event callback function.

OnTextSearchStart

Triggers an event when the text search is started.

Declaration

public EventCallback<TextSearchStartEventArgs> OnTextSearchStart { get; set; }

Property Value

Type	Description
Microsoft.AspNetCore.Components.EventCallback<TextSearchStartEventArgs>	An event callback function.

OnTextSelectionEnd

Triggers an event when the text selection is finished.

Declaration

public EventCallback<TextSelectionEndEventArgs> OnTextSelectionEnd { get; set; }

Property Value

Type	Description
Microsoft.AspNetCore.Components.EventCallback<TextSelectionEndEventArgs>	An event callback function.

OnTextSelectionStart

Triggers an event when the text selection is started.

Declaration

public EventCallback<TextSelectionStartEventArgs> OnTextSelectionStart { get; set; }

Property Value

Type	Description
Microsoft.AspNetCore.Components.EventCallback<TextSelectionStartEventArgs>	An event callback function.

OnThumbnailClick

Triggers an event when the thumbnail is clicked in the thumbnail panel of PDF Viewer.

Declaration

public EventCallback<ThumbnailClickEventArgs> OnThumbnailClick { get; set; }

Property Value

Type	Description
Microsoft.AspNetCore.Components.EventCallback<ThumbnailClickEventArgs>	An event callback function.

PageChanged

Triggers when there is change in current page number.

Declaration

public EventCallback<PageChangeEventArgs> PageChanged { get; set; }

Property Value

Type	Description
Microsoft.AspNetCore.Components.EventCallback<PageChangeEventArgs>	An event callback function.

PageMouseover

Triggers when mouse over the page.

Declaration

public EventCallback<PageMouseoverEventArgs> PageMouseover { get; set; }

Property Value

Type	Description
Microsoft.AspNetCore.Components.EventCallback<PageMouseoverEventArgs>	An event callback function.

Parent

Represent Pdf Viewer component.

Declaration

protected PdfViewerBase Parent { get; set; }

Property Value

Type
PdfViewerBase

PrintEnd

Triggers an event when the print actions is finished.

Declaration

public EventCallback<PrintEndEventArgs> PrintEnd { get; set; }

Property Value

Type	Description
Microsoft.AspNetCore.Components.EventCallback<PrintEndEventArgs>	An event callback function.

PrintStart

Triggers an event when the print action is started.

Declaration

public EventCallback<PrintStartEventArgs> PrintStart { get; set; }

Property Value

Type	Description
Microsoft.AspNetCore.Components.EventCallback<PrintStartEventArgs>	An event callback function.

RemoveSignature

Triggers when signature is removed over the page of the PDF document.

Declaration

public EventCallback<RemoveSignatureEventArgs> RemoveSignature { get; set; }

Property Value

Type	Description
Microsoft.AspNetCore.Components.EventCallback<RemoveSignatureEventArgs>	An event callback function.

ResizeSignature

Triggers when signature is resized over the page of the PDF document.

Declaration

public EventCallback<ResizeSignatureEventArgs> ResizeSignature { get; set; }

Property Value

Type	Description
Microsoft.AspNetCore.Components.EventCallback<ResizeSignatureEventArgs>	An event callback function.

SignaturePropertiesChange

Triggers when the property of the signature is changed in the page of the PDF document.

Declaration

public EventCallback<SignaturePropertiesChangeEventArgs> SignaturePropertiesChange { get; set; }

Property Value

Type	Description
Microsoft.AspNetCore.Components.EventCallback<SignaturePropertiesChangeEventArgs>	An event callback function.

SignatureSelected

Triggers when signature is selected over the page of the PDF document.

Declaration

public EventCallback<SignatureSelectEventArgs> SignatureSelected { get; set; }

Property Value

Type	Description
Microsoft.AspNetCore.Components.EventCallback<SignatureSelectEventArgs>	An event callback function.

SignatureUnselected

Triggers when signature is unselected over the page of the PDF document.

Declaration

public EventCallback<SignatureSelectEventArgs> SignatureUnselected { get; set; }

Property Value

Type	Description
Microsoft.AspNetCore.Components.EventCallback<SignatureSelectEventArgs>	An event callback function.

ToolbarClicked

Triggers an event when a Custom Toolbar Item is clicked in the Toolbar.

Declaration

public EventCallback<ClickEventArgs> ToolbarClicked { get; set; }

Property Value

Type	Description
Microsoft.AspNetCore.Components.EventCallback<ClickEventArgs>	An event callback function.

Remarks

Use this property to assign a function or method to handle the click event of the Custom Toolbar Item.

ValidateFormFields

Triggers when validation is failed. This event will be triggered if set enableFormValidations as true.

Declaration

public EventCallback<ValidateFormFieldsArgs> ValidateFormFields { get; set; }

Property Value

Type	Description
Microsoft.AspNetCore.Components.EventCallback<ValidateFormFieldsArgs>	An event callback function.

ZoomChanged

Triggers when there is change in the magnification value.

Declaration

public EventCallback<ZoomChangeEventArgs> ZoomChanged { get; set; }

Property Value

Type	Description
Microsoft.AspNetCore.Components.EventCallback<ZoomChangeEventArgs>	An event callback function.

Methods

BuildRenderTree(RenderTreeBuilder)

Declaration

protected override void BuildRenderTree(RenderTreeBuilder __builder)

Parameters

Type	Name	Description
Microsoft.AspNetCore.Components.Rendering.RenderTreeBuilder	__builder

OnInitializedAsync()

Declaration

protected override Task OnInitializedAsync()

Returns

Type
System.Threading.Tasks.Task