ASPxClientDocumentViewer Class

The client-side equivalent of the ASPxWebDocumentViewer control.

Declaration

declare class ASPxClientDocumentViewer extends ASPxClientControl

Remarks

The following code illustrates how to access a document viewer on the client.

ASPX

<dx:ASPxDocumentViewer ID="DocumentViewer1" runat="server"
    ReportName="WebApplication2.XtraReport1"
    ClientInstanceName="documentViewer1">
        <ClientSideEvents PageLoad="function(s, e) {
        var nextpage = e.PageIndex + 1 < e.PageCount ? e.PageIndex + 1 : 0;
        setTimeout('switchPage(' + nextpage + ')', 5000);
        }" />
</dx:ASPxDocumentViewer>

<script language="javascript" type="text/javascript">
    function switchPage(nextPage) {
        documentViewer1.GotoPage(nextPage);
    }
</script>

Inherited Members

SendMessageToAssistiveTechnology(message)

SetClientVisible(visible)

Inheritance

ASPxClientControlBase

ASPxClientControl

ASPxClientDocumentViewer

Methods

Cast(obj) Method

Converts the specified object to the current object’s type. This method is effective when you utilize the Client API IntelliSense feature provided by DevExpress.

Declaration

static Cast(
    obj: any
): ASPxClientDocumentViewer

Parameters

Name	Type	Description
obj	any	The client object to be type cast. Represents an instance of a DevExpress web control’s client object.

Returns

Type	Description
`ASPxClientDocumentViewer`	An `ASPxClientDocumentViewer` object.

Remarks

The Cast method is implemented as a part of the JavaScript IntelliSense support for DevExpress ASP.NET controls and MVC extensions. So, using the Cast method is sensible when you intend to use IntelliSense during writing JavaScript code at design time with the help of the DevExpress client API.

A call to the Cast method (which is a static method) casts the specified client object to the ASPxClientDocumentViewer type. As a result, the object’s type is now known and ASPxClientDocumentViewer type specific IntelliSense information can be displayed for this client object, facilitating your coding.

The examples of this method application are as follows.

Converting the event source object passed to a client event’s handler:

...
<ClientSideEvents Init="function(s, e) { 
    var clientObject = ASPxClientDocumentViewer.Cast(s);
}" />

Converting a client object accessed by using the value of the ClientInstanceName (or ID) property. For instance, if a web control’s ClientInstanceName property is set to ‘ASPxClientDocumentViewer1’, the object can be type cast in the following manner:
```
...
var clientObject = ASPxClientDocumentViewer.Cast('ASPxClientDocumentViewer1');
```

GetDocumentMap Method

Provides access to the document of the ASPxClientDocumentViewer.

Declaration

GetDocumentMap(): ASPxClientReportDocumentMap

Returns

Type	Description
ASPxClientReportDocumentMap	An ASPxClientReportDocumentMap object.

GetParametersPanel Method

Provides access to the parameters panel of the ASPxClientDocumentViewer.

Declaration

GetParametersPanel(): ASPxClientReportParametersPanel

Returns

Type	Description
ASPxClientReportParametersPanel	An ASPxClientReportParametersPanel object.

GetRibbonToolbar Method

Provides access to the Ribbon of the ASPxClientDocumentViewer.

Declaration

GetRibbonToolbar(): ASPxClientRibbon

Returns

Type	Description
ASPxClientRibbon	A Ribbon object.

GetSplitter Method

Provides access to the Splitter of the ASPxClientDocumentViewer.

Declaration

GetSplitter(): ASPxClientSplitter

Returns

Type	Description
ASPxClientSplitter	A Splitter object.

GetToolbar Method

Provides access to the Document Viewer toolbar on the client.

Declaration

GetToolbar(): ASPxClientReportToolbar

Returns

Type	Description
ASPxClientReportToolbar	An ASPxClientReportToolbar object.

GetViewer Method

Obsolete. Provides access to the ASPxClientDocumentViewer‘s preview that exposes methods to print and export the document.

Declaration

GetViewer(): ASPxClientReportViewer

Returns

Type	Description
ASPxClientReportViewer	An ASPxClientReportViewer object.

GotoBookmark(pageIndex, bookmarkPath) Method

Sets focus on the report control specified by its bookmark.

Declaration

GotoBookmark(
    pageIndex: number,
    bookmarkPath: string
): void

Parameters

Name	Type	Description
pageIndex	number	An integer value, specifying the page index.
bookmarkPath	string	A String value, specifying the path to the bookmark.

GotoPage(pageIndex) Method

Displays the specified report page.

Declaration

GotoPage(
    pageIndex: number
): void

Parameters

Name	Type	Description
pageIndex	number	An integer value, identifying the report page.

IsSearchAllowed Method

Gets a value indicating whether or not searching text across a report is permitted in the web browser.

Declaration

IsSearchAllowed(): boolean

Returns

Type	Description
boolean	true if searching text in the report is allowed; otherwise, false.

Print Method

Prints the document’s page with the specified page index.

Declaration

Print(
    pageIndex?: number
): void

Parameters

Name	Type	Description
pageIndex	number	A Int32 representing the index of the page to be printed.

Refresh Method

Initiates a round trip to the server so that the current page will be reloaded.

Declaration

Refresh(): void

SaveToDisk(format) Method

Exports a report to a file of the specified format, and saves it to the disk.

Declaration

SaveToDisk(
    format: string
): void

Parameters

Name	Type	Description
format	string	A string specifying the format to which a report should be exported.

Remarks

The following export formats can be used as a format parameter passed to the SaveToDisk method:

“pdf”
“xls”
“xlsx”
“csv”
“rtf”
“mht”
“txt”
“bmp”
“png”
“jpg”
“gif”
“tiff”

SaveToWindow(format) Method

Exports a report to a file of the specified format, and shows it in a new Web Browser window.

Declaration

SaveToWindow(
    format: string
): void

Parameters

Name	Type	Description
format	string	A string specifying the format to which a report should be exported.

Remarks

The following export formats can be used as a format parameter passed to the SaveToWindow method:

“pdf”
“xls”
“xlsx”
“csv”
“rtf”
“mht”
“txt”
“bmp”
“png”
“jpg”
“gif”
“tiff”

Search Method

Invokes the Search dialog, which allows end-users to search for specific text in a report.

Declaration

Search(): void

Remarks

Note that the Search dialog can be invoked only if the ASPxClientDocumentViewer.IsSearchAllowed method returns true.

Events

BeginCallback Event

Occurs when a callback for server-side processing is initiated.

Declaration

BeginCallback: ASPxClientEvent<ASPxClientBeginCallbackEventHandler<ASPxClientDocumentViewer>>

Event Data

The BeginCallback event's data class is ASPxClientBeginCallbackEventArgs. The following properties provide information specific to this event:

Property	Description
command	Gets a command name that identifies which client action initiated a callback.

Remarks

The BeginCallback and ASPxClientDocumentViewer.EndCallback events can be used to perform specific client-side actions while a callback is being processed on the server side.

CallbackError Event

Fires on the client if any server error occurs during server-side processing of a callback sent by ASPxClientDocumentViewer.

Declaration

CallbackError: ASPxClientEvent<ASPxClientCallbackErrorEventHandler<ASPxClientDocumentViewer>>

Event Data

The CallbackError event's data class is ASPxClientCallbackErrorEventArgs. The following properties provide information specific to this event:

Property	Description
handled	Gets or sets whether the event is handled and the default error handling actions are not required.
message	Gets the error message that describes the server error that occurred.

Remarks

The CallbackError event enables you to properly respond to a server error occurring as a result of a callback being processed on the server side. You can handle this event to perform specific client-side actions, such as displaying explanatory text or an image related to the error, for example.

Typically, a server error which occurs during server-side processing of a callback leads to the web application hanging, because in this case, no proper response is generated for a control that initiated the callback. However, AJAX-enabled web controls from the DevExpress product line are able to automatically catch server errors occurring within handlers of their server-side events, and to pass the related error information to the client for further processing through the CallbackError event’s argument.

See Handling Callback Exceptions on Client to learn more.

EndCallback Event

Occurs on the client after a callback’s server-side processing has been completed.

Declaration

EndCallback: ASPxClientEvent<ASPxClientEndCallbackEventHandler<ASPxClientDocumentViewer>>

Event Data

The EndCallback event's data class is ASPxClientEndCallbackEventArgs. The following properties provide information specific to this event:

Property	Description
command	Gets a command name that identifies which client action forced a callback to occur.

Remarks

The ASPxClientDocumentViewer.BeginCallback and EndCallback events can be used to perform specific client-side actions when a callback is being processed on a server.

PageLoad Event

Occurs on the client side when a report page is loaded into this ASPxClientDocumentViewer instance.

Declaration

PageLoad: ASPxClientEvent<ASPxClientReportViewerPageLoadEventHandler<ASPxClientDocumentViewer>>

Event Data

The PageLoad event's data class is ASPxClientReportViewerPageLoadEventArgs. The following properties provide information specific to this event:

Property	Description
PageCount	Gets a value specifying the total number of pages displayed in a report viewer.
PageIndex	Gets a value specifying a zero-based index of a page to be displayed in a report viewer.

The event data class exposes the following methods:

Method	Description
IsFirstPage	Gets a value indicating whether a report page, which is currently loaded into the ASPxClientReportViewer, is the first page of a report.
IsLastPage	Gets a value indicating whether a report page, which is currently loaded into the ASPxClientReportViewer, is the last page of a report.

ToolbarItemClick Event

Occurs when an item within the Document Viewer’s report toolbar is clicked.

Declaration

ToolbarItemClick: ASPxClientEvent<ASPxClientEventHandler<ASPxClientDocumentViewer>>

Event Data

The ToolbarItemClick event's data class is ASPxClientEventArgs.

ToolbarItemValueChanged Event

Occurs when the value of an item within the Document Viewer’s report toolbar is changed.

Declaration

ToolbarItemValueChanged: ASPxClientEvent<ASPxClientEventHandler<ASPxClientDocumentViewer>>

Event Data

The ToolbarItemValueChanged event's data class is ASPxClientEventArgs.