HeatmapControl.ExportToImage(Stream, ImageExportOptions) Method

Exports the Heatmap Control as an image to a stream. The export settings passed as a parameter are used.

Namespace: DevExpress.Xpf.Charts.Heatmap

Assembly: DevExpress.Xpf.Charts.v23.2.dll

NuGet Package: DevExpress.Wpf.Charts

Declaration

C#

public void ExportToImage(
    Stream stream,
    ImageExportOptions options
)

VB.NET

Public Sub ExportToImage(
    stream As Stream,
    options As ImageExportOptions
)

Parameters

Name	Type	Description
stream	Stream	The stream for output data.
options	ImageExportOptions	Export settings.

Remarks

The following example uses the ExportToImage method to export the Heatmap Control to a stream with the specified export settings:

XAML

<dxh:HeatmapControl x:Name="heatmapControl">
    <dxh:HeatmapControl.PrintOptions>
        <dxh:HeatmapPrintOptions SizeMode="ProportionalZoom" />
    </dxh:HeatmapControl.PrintOptions>
</dxh:HeatmapControl>
<dx:SimpleButton Click="SimpleButton_Click"/>

C#

using DevExpress.XtraPrinting;
using System.Drawing.Imaging;
using System.IO;

    private void SimpleButton_Click(object sender, RoutedEventArgs e) {
        using (FileStream outputStream = File.Open("D:/Temp/ExportedImage.png", FileMode.OpenOrCreate)) {
            ImageExportOptions exportOptions = new ImageExportOptions();
            exportOptions.Format = ImageFormat.Png;
            heatmapControl.ExportToImage(outputStream, exportOptions);
        }
    }

VB.NET

Imports DevExpress.XtraPrinting
Imports System.Drawing.Imaging

    Private Sub SimpleButton_Click(ByVal sender As Object, ByVal e As RoutedEventArgs)
        Using outputStream As FileStream = File.Open("D:/Temp/ExportedImage.png", FileMode.OpenOrCreate)
            Dim exportOptions As ImageExportOptions = New ImageExportOptions()
            exportOptions.Format = ImageFormat.Png
            heatmapControl.ExportToImage(outputStream, exportOptions)
        End Using

    End Sub