GridDocumentExportCustomizeCellEventArgs.SummaryItems Property
Returns information about summary items displayed in the processed cell.
Namespace: DevExpress.Blazor
Assembly: DevExpress.Blazor.v25.1.dll
NuGet Package: DevExpress.Blazor
Declaration
public IReadOnlyList<GridDocumentExportSummaryItem> SummaryItems { get; }
Property Value
Type | Description |
---|---|
IReadOnlyList<GridDocumentExportSummaryItem> | A list of summary items displayed in the processed cell. If the cell does not contain summaries, the property returns |
Remarks
When exporting Grid data to PDF, handle the CustomizeCell event to customize table cells in the output file. The AreaType event argument identifies the area containing the processed cell.
Use the SummaryItems
property to obtain information about summaries displayed in this cell. If the cell does not contain summaries, the property returns null
.
The following example exports Grid data to PDF and customizes the output table appearance:
@rendermode InteractiveServer
@using DevExpress.Drawing;
@inject WeatherForecastService ForecastService
<DxGrid @ref="Grid" Data="@forecasts" ShowGroupPanel="true">
<Columns>
<DxGridDataColumn Caption="Date" FieldName="Date" />
<DxGridDataColumn Caption="Temperature (C)" FieldName="TemperatureC" ExportWidth="300"/>
<DxGridDataColumn Caption="Temperature (F)" FieldName="TemperatureF" ExportWidth="300" />
<DxGridDataColumn Caption="Summary" FieldName="Summary" GroupIndex="0" />
</Columns>
<TotalSummary>
<DxGridSummaryItem SummaryType="GridSummaryItemType.Count" FieldName="Date" />
<DxGridSummaryItem SummaryType="GridSummaryItemType.Min" FieldName="TemperatureC" />
<DxGridSummaryItem SummaryType="GridSummaryItemType.Max" FieldName="TemperatureC" />
</TotalSummary>
<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() {
await Grid.ExportToPdfAsync("ExportResult", new GridPdfExportOptions() {
CustomizeCell = OnCustomizeCell,
});
}
void OnCustomizeCell(GridDocumentExportCustomizeCellEventArgs args) {
if (args.AreaType == DocumentExportAreaType.Header){
args.ElementStyle.TextAlignment = DevExpress.XtraPrinting.TextAlignment.MiddleCenter;
args.ElementStyle.Font = new DXFont("Arial", 10, DXFontStyle.Bold);
}
if (args.AreaType == DocumentExportAreaType.GroupHeader && args.GroupFieldName == "Summary")
args.Text = args.Value + ":";
if (args.AreaType == DocumentExportAreaType.DataArea) {
args.ElementStyle.BackColor = System.Drawing.Color.MintCream;
if (args.ColumnFieldName.Contains("Temperature")) {
var forecast = (WeatherForecast)args.DataItem;
if (forecast.TemperatureC < 0)
args.ElementStyle.ForeColor = System.Drawing.Color.Blue;
if (forecast.TemperatureC > 30)
args.ElementStyle.ForeColor = System.Drawing.Color.Red;
}
}
if (args.AreaType == DocumentExportAreaType.TotalFooter && args.ColumnFieldName == "TemperatureC") {
args.Text = args.SummaryItems[0].Text + "°C\n" + args.SummaryItems[1].Text + "°C";
args.ElementStyle.TextAlignment = DevExpress.XtraPrinting.TextAlignment.MiddleRight;
}
args.Handled = true;
}
}