CustomizeExportDocumentWebEventArgs.GetItemData(String) Method

Returns multidimensional data for the specified dashboard item.

Namespace: DevExpress.DashboardWeb

Assembly: DevExpress.Dashboard.v26.1.Web.dll

Declaration

C#

public MultiDimensionalData GetItemData(
    string dashboardItemName
)

VB.NET

Public Function GetItemData(
    dashboardItemName As String
) As MultiDimensionalData

Parameters

Name	Type	Description
dashboardItemName	String	The dashboard item’s component name.

Returns

Type	Description
MultiDimensionalData	The multidimensional data.

Remarks

Call the e.GetItemData method to obtain dashboard item’s data.

The code snippet below demonstrates how to generate an XLSX document. The code uses Spreadsheet Document API to modify the generated document’s layout and content. This library is part of the DevExpress Office File API suite.

Program.cs

using DevExpress.DashboardAspNetCore;
using DevExpress.DashboardCommon;
using DevExpress.DashboardCommon.ViewerData;
using DevExpress.DashboardWeb;
using DevExpress.Spreadsheet;
using System.Collections.Generic;
using System.Drawing;

var builder = WebApplication.CreateBuilder(args);

builder.Services.AddDevExpressControls();
builder.Services.AddScoped<DashboardConfigurator>((IServiceProvider serviceProvider) => {
    DashboardConfigurator configurator = new DashboardConfigurator();
    // ...
    configurator.CustomizeExportDocument += Configurator_CustomizeExportDocument;

    return configurator;
});

var app = builder.Build();
// ...
app.Run();

void Configurator_CustomizeExportDocument(object sender, CustomizeExportDocumentWebEventArgs e) {
    if (e.ExportAction == DashboardExportAction.ExportToExcel && e.ExcelExportOptions.Format == ExcelFormat.Xlsx) {
        CustomDashboardItem item = e.GetDashboardItem("customItemDashboardItem2") as CustomDashboardItem;

        if (item != null) {
            DevExpress.Spreadsheet.Workbook workbook = new DevExpress.Spreadsheet.Workbook();
            Worksheet worksheet = workbook.Worksheets[0];

            MultiDimensionalData itemData = e.GetItemData(e.ItemComponentName);
            CustomItemData customItemData = new CustomItemData(item, itemData);

            DashboardFlatDataSource flatData = customItemData.GetFlatData();
            IList<DashboardFlatDataColumn> columns = flatData.GetColumns();
            for (int colIndex = 0; colIndex < columns.Count; colIndex++) {
                worksheet.Cells[0, colIndex].Value = columns[colIndex].DisplayName;
                worksheet.Cells[0, colIndex].FillColor = Color.LightGreen;
                worksheet.Cells[0, colIndex].Font.FontStyle = SpreadsheetFontStyle.Bold;
                int headerOffset = 1;
                for (int rowIndex = 0; rowIndex < flatData.Count; rowIndex++)
                    worksheet.Cells[rowIndex + headerOffset, colIndex].Value = flatData.GetDisplayText(columns[colIndex].Name, rowIndex);

            }
            e.Stream.SetLength(0);
            workbook.SaveDocument(e.Stream, DocumentFormat.Xlsx);
        }
    }
}

The following image demonstrates the resulting document: