Gradient Texture with Transparency

[C# Programming]

Does anybody have an idea how to draw an image (like using TextureBrush) with gradient transparency (like using LinearGradientBrush)?

The only examples I can find on drawing an image with transparency use ColorMatrix to give the entire image a transparency value, which is not what I'm looking for. I guess what I really need is a LinearGradientTextureBrush, which of course doesn't exist. Does anybody have a suggestion on how to accomplish this? I'm out of ideas.

Thanks in advance for any suggestions.
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