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DxDocumentViewerCallbacks Class

Specifies client-side event handler functions for the Web Document Viewer. See DxDocumentViewerCallbacks Members for the complete list of events.

Namespace: DevExpress.Blazor.Reporting

Assembly: DevExpress.Blazor.Reporting.v22.2.JSBasedControls.Common.dll

Declaration

public class DxDocumentViewerCallbacks :
    SettingsComponent<DocumentViewerCallbacksModel>

Remarks

The DxDocumentViewerCallbacks class contains properties that specify JavaScript handler functions for client-side events.

View Example: Blazor Reporting - UI Customization API

You can define a global JavaScript function in an external script file and add the file reference to the page. The following example handles the BeforeRender event to specify the Document Viewer’s zoom level:

  1. Create a JavaScript file in the project’s wwwroot/js folder. Write the following code:

    window.ReportingViewerCustomization = {
        //Change default Zoom level
        onBeforeRender: function(s, e) {
            //-1: Page Width
            //0: Whole Page
            //1: 100%
            e.reportPreview.zoom(-1);
        }
    }
    
  2. Include the script file in the host page:

    <script src="~/js/reporting_ViewerCustomization.js"></script>
    
  3. Set the DxDocumentViewerCallbacks.BeforeRender property to the function name:

    <DxDocumentViewer ReportName="SampleReport" Height="1000px" Width="100%">
        <DxDocumentViewerCallbacks BeforeRender="ReportingViewerCustomization.onBeforeRender" />
    </DxDocumentViewer>
    

Inheritance

Object
ComponentBase
DevExpress.Blazor.Reporting.Base.SettingsComponent<DevExpress.Blazor.Reporting.DocumentViewerCallbacksModel>
DxDocumentViewerCallbacks
See Also