BitmapDataExtensionsBeginResize Method

Begins to resize the specified source asynchronously.


Namespace: KGySoft.Drawing.Imaging
Assembly: KGySoft.Drawing.Core (in KGySoft.Drawing.Core.dll) Version: 7.0.0
public static IAsyncResult BeginResize(
	this IReadableBitmapData source,
	Size newSize,
	ScalingMode scalingMode = ScalingMode.Auto,
	bool keepAspectRatio = false,
	AsyncConfig? asyncConfig = null


source  IReadableBitmapData
The source IReadableBitmapData to resize.
newSize  Size
The requested new size.
scalingMode  ScalingMode  (Optional)
A ScalingMode value, which determines the quality of the result as well as the processing time. This parameter is optional.
Default value: Auto.
keepAspectRatio  Boolean  (Optional)
to keep aspect ratio of the specified source; otherwise, . This parameter is optional.
Default value: .
asyncConfig  AsyncConfig  (Optional)
The configuration of the asynchronous operation such as parallelization, cancellation, reporting progress, etc. When Progress is set in this parameter, then this library always passes a DrawingOperation instance to the generic methods of the IAsyncProgress interface. This parameter is optional.
Default value: .

Return Value

An IAsyncResult that represents the asynchronous operation, which could still be pending.

Usage Note

In Visual Basic and C#, you can call this method as an instance method on any object of type IReadableBitmapData. When you use instance method syntax to call this method, omit the first parameter. For more information, see Extension Methods (Visual Basic) or Extension Methods (C# Programming Guide).


In .NET Framework 4.0 and above you can use also the ResizeAsync method.

To get the result or the exception that occurred during the operation you have to call the EndResize method.

This method is not a blocking call even if the MaxDegreeOfParallelism property of the asyncConfig parameter is 1.


See the Remarks section of the Resize method for more details.

See Also