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V25.1
  • DxGrid.ExportToPdfAsync(Stream, GridPdfExportOptions) Method

    Exports Grid data in PDF to the specified stream.

    Namespace: DevExpress.Blazor

    Assembly: DevExpress.Blazor.v25.1.dll

    NuGet Package: DevExpress.Blazor

    Declaration

    public Task ExportToPdfAsync(
        Stream stream,
        GridPdfExportOptions options = null
    )

    Parameters

    Name Type Description
    stream Stream

    The target stream for Grid data export.

    Optional Parameters

    Name Type Default Description
    options GridPdfExportOptions null

    PDF export options.

    Returns

    Type Description
    Task

    The task that is completed when the file is exported.

    Remarks

    Call the ExportToPdfAsync method to export Grid data to PDF. Method overloads allow you to write the result to a stream (the current overload) or to a file downloaded onto a client machine (ExportToPdfAsync(String, GridPdfExportOptions)).

    The method accepts a GridPdfExportOptions object as a parameter. Use this parameter to configure export settings.

    Run Demo: Grid - Export Read Tutorial: Export to PDF

    Example

    The following example exports selected rows to PDF and customizes the output document’s appearance:

    @rendermode InteractiveServer
    @using DevExpress.Drawing;
    @inject WeatherForecastService ForecastService
    
    <DxGrid @ref="Grid" Data="@forecasts">
        <Columns>
            <DxGridSelectionColumn Width="60px" AllowSelectAll="true" />
            <DxGridDataColumn Caption="Date" FieldName="Date" />
            <DxGridDataColumn Caption="Temperature (C)" FieldName="TemperatureC" />
            <DxGridDataColumn Caption="Temperature (F)" FieldName="TemperatureF" />
            <DxGridDataColumn Caption="Summary" FieldName="Summary" />
        </Columns>
        <ToolbarTemplate>
            <DxToolbar>
                <DxToolbarItem Text="Export to PDF" Click="ExportPdf_Click" BeginGroup="true" />
            </DxToolbar>
        </ToolbarTemplate>
    </DxGrid>
    
    @code {
        IGrid Grid;
        private WeatherForecast[]? forecasts;
    
        protected override async Task OnInitializedAsync() {
            forecasts = await ForecastService.GetForecastAsync(DateOnly.FromDateTime(DateTime.Now));
        }
        async Task ExportPdf_Click() {
            var myStream = new System.IO.MemoryStream();
            await Grid.ExportToPdfAsync(myStream, new GridPdfExportOptions() {
                    ExportSelectedRowsOnly = true, // Exports only selected rows
                    CustomizeCell = OnCustomizeCell, // Customizes table cell appearance
                    CustomizeDocument = OnCustomizeDocument, // Customizes overall document appearance
                    CustomizeDocumentHeader = OnCustomizeDocumentHeader, // Adds and customizes a document header
                });
            // Process myStream here
        }
        void OnCustomizeDocument(GridDocumentExportCustomizeDocumentEventArgs args) {
            // Sets default font settings for all elements
            args.DefaultElementStyle.Font = new DXFont("Times New Roman", 12, DXFontStyle.Regular);
            // Switches the page orientation to landscape
            args.Landscape = true;
        }
        void OnCustomizeCell(GridDocumentExportCustomizeCellEventArgs args) {
            // Sets border settings for all table cells
            args.ElementStyle.BorderColor = System.Drawing.Color.DarkGray;
            args.ElementStyle.BorderDashStyle = DevExpress.XtraPrinting.BorderDashStyle.Dash;
            // Sets style settings for header cells
            if (args.AreaType == DocumentExportAreaType.Header) {
                args.ElementStyle.BackColor = System.Drawing.Color.LightGray;
                args.ElementStyle.TextAlignment = DevExpress.XtraPrinting.TextAlignment.MiddleCenter;
                args.ElementStyle.Font = new DXFont("Arial", 12, DXFontStyle.Bold);
            }
            args.Handled = true;
        }
        void OnCustomizeDocumentHeader(GridDocumentExportCustomizeDocumentHeaderFooterEventArgs args) {
            // Adds a document header
            args.Text = "Weather Forecast";
            // Sets header style settings
            args.ElementStyle.Font = new DXFont("Arial", 12, DXFontStyle.Regular);
            args.ElementStyle.TextAlignment = DevExpress.XtraPrinting.TextAlignment.MiddleCenter;
        }
    }
    

    Blazor Grid PDF Export

    Limitations and Specifics

    • Template content is not exported (including detail Grids).
    • CSS classes applied to the Grid and its elements do not affect the exported document’s appearance. Handle the CustomizeCell event to customize the output table.
    • The Grid does not export columns whose Visible property is set to false. Handle the CustomizeColumn event to add hidden columns to the output file.
    • The Grid exports all data rows that match the current filter criteria (including rows in collapsed groups). Handle the RowExporting event to exclude specific rows from export.
    • When the Grid is bound to a GridDevExtremeDataSource, you must specify the KeyFieldName property to export only selected rows.
    See Also