Icon.ToBitmap Method ()


Converts this Icon to a GDI+ Bitmap.

Namespace:   System.Drawing
Assembly:  System.Drawing (in System.Drawing.dll)

public Bitmap ToBitmap()

Return Value

Type: System.Drawing.Bitmap

A Bitmap that represents the converted Icon.

The transparent areas of the icon are lost when it is converted to a bitmap, and the transparent color of the resulting bitmap is set to RGB(13,11,12). The returned bitmap has the same height and width as the original icon.


Beginning with framework version 4.6 support was added for PNG frames in .ico files. Applications that target earlier versions of the framework but are running on the 4.6 bits can opt in into the new behavior by adding the following line to the <runtime> section of the app.config file:<AppContextSwitchOverrides value="Switch.System.Drawing.DontSupportPngFramesInIcons=false" />

The following code example demonstrates how to use the ToBitmap method. This example is designed to be used with Windows Forms. Create a form and paste the following code into it. Call the IconToBitmap method in the form's .Paint event handler, passing e as PaintEventArgs .

private void IconToBitmap(PaintEventArgs e)
    // Construct an Icon.
    Icon icon1 = new Icon(SystemIcons.Exclamation, 40, 40);

    // Call ToBitmap to convert it.
    Bitmap bmp = icon1.ToBitmap();

    // Draw the bitmap.
    e.Graphics.DrawImage(bmp, new Point(30, 30));

.NET Framework
Available since 1.1
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