WebDocumentViewerExtension.Bind(String) Method

Binds the Document Viewer to the specified report.

Namespace: DevExpress.Web.Mvc

Assembly: DevExpress.Web.Mvc5.v23.2.dll

NuGet Package: DevExpress.Web.Mvc5

Declaration

C#

public WebDocumentViewerExtension Bind(
    string reportUrl
)

VB.NET

Public Function Bind(
    reportUrl As String
) As WebDocumentViewerExtension

Parameters

Name	Type	Description
reportUrl	String	A String value specifying a report’s unique name.

Returns

Type	Description
WebDocumentViewerExtension	A WebDocumentViewerExtension object.

Remarks

A Document Viewer requests an appropriate CachedReportSourceWeb object to generate a document by the specified report’s unique name, when required. The CachedReportSourceWeb object generates a report document caching each generated page. This consumes less memory in comparison to the report generation method used when a report instance is directly passed to the Document Viewer.

C#

// A View with a Document Viewer

@model DevExpress.XtraReports.Web.CachedReportSourceWeb

@Html.DevExpress().WebDocumentViewer(settings => {
  settings.Name = "WebDocumentViewer1";
}).Bind(Model).GetHtml()

// A home controller 

public class HomeController : Controller {
  public ActionResult Viewer() {
    return View('myReport');
  }
} 

VB.NET

' A View with a Document Viewer

@ModelType DevExpress.XtraReports.UI.XtraReport
@Html.DevExpress().WebDocumentViewer(Function(settings) 
    settings.Name = "webDocumentViewer" 
End Function).Bind(Model).GetHtml()

' A home controller

Public Class HomeController
    Inherits Controller

  Public Function Viewer() As ActionResult
    Return View('myReport')
  End Function
End Class

Implement the ICachedReportSourceWebResolver interface to associate the specified report’s unique name with the CachedReportSourceWeb object that possesses the corresponding report. The following code demonstrates how to register a custom ICachedReportSourceWebResolver.

C#

void Application_Start(object sender, EventArgs e) {
    DefaultWebDocumentViewerContainer.Register<ICachedReportSourceWebResolver, CustomCachedReportSourceWebResolver>();
}

VB.NET

Private Sub Application_Start(ByVal sender As Object, ByVal e As EventArgs)
    DefaultWebDocumentViewerContainer.Register(Of ICachedReportSourceWebResolver, CustomCachedReportSourceWebResolver)()
End Sub 

Tip

If several Bind method calls are invoked one after another, the Document Viewer displays the report that is specified in the last method call.

Using this Bind method overload allows the Document Viewer to regenerate documents when using their interactive features after the application pool has recycled, because the initial report can always be found.

By default, the CachedReportSourceWeb object caches a report document to the MemoryDocumentStorage. You can use a file, database or a custom storage instead so that the Document Viewer can recover its document from the storage after the application pool has recycled. Utilize a file storage by calling the DefaultWebDocumentViewerContainer.UseFileDocumentStorage method. To use a DbDocumentStorage or a custom (DocumentStorage) storage, register your IDocumentStorageProvider object.