BitmapDataExtensionsBeginClone(IReadableBitmapData, Rectangle, AsyncConfig) Method

Begins to clone the specified portion of the specified source asynchronously.


Namespace: KGySoft.Drawing.Imaging
Assembly: KGySoft.Drawing.Core (in KGySoft.Drawing.Core.dll) Version: 7.0.0
public static IAsyncResult BeginClone(
	this IReadableBitmapData source,
	Rectangle sourceRectangle,
	AsyncConfig? asyncConfig = null


source  IReadableBitmapData
An IReadableBitmapData instance to be cloned.
sourceRectangle  Rectangle
A Rectangle that specifies the portion of the source to be cloned.
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 CloneAsync(IReadableBitmapData, Rectangle, TaskConfig) method.

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

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


ArgumentNullExceptionsource is .
ArgumentOutOfRangeExceptionsourceRectangle has no overlapping region with source bounds.

See Also