better quality thumbnail

I am looking c# code which creates better quality higher resolution thumbnail image.

i am ha开发者_开发知识库ving an image of dimension(600 * 900) and i need to create thumbnail of dimension (100 * 100) with high quality.

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Have a look at this. I think this is what you are looking for

http://www.mikeborozdin.com/post/High-Quality-Image-Resizing-with-NET.aspx

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Would the code in Image Resizing ( http://www.codeproject.com/KB/GDI-plus/imgresizoutperfgdiplus.aspx licensed under the CodeProject Open License) be something of interest? It implements various resampling filters (Hermite,Lanczos3,CatmullRom,QuadraticBSpline,...)

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You can use imagemagick http://www.imagemagick.org/script/index.php. Install it and call from c# using command line.