IFrame.ActualDataSize Property
Returns/sets the actual byte count used in the buffer in IFrame.Ptr. This can be smaller then IFrame.FrameType.BufferSize for compressed formats.
Syntax: 
[C#]
public int ActualDataSize { get; set; };
Information:

Introduced in version 3.5
See also: IFrame, IFrame.FrameType, IFrame.Ptr

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