manuplating pixel

hi i am using (.NET Class Libraries\.NET Framework\01 Imaging\01 Main Demo ) main demo as a base project to build a my own viewer and in effect i have to add my own filter .
1) how do i get pixel value(whole buffer ) so that i can perform what all pixel manupliacation and then again re-store buffer to its orignal position
for example i have one filter implementation i have made one functon .
now how to fill filter buffer data and all
example function :
void examle_filter(float I, int Ydimension, int Xdimension, int lengthH, float Output)
{
//This filter requires following inputs:
I--> Input image (or buffer which carry pixel)
sizeI--> (1 X 2)pointer array having input image dimensions.(size of bufer )
J--> Output image (or buffer )

can u please suggest me with simple example
how to get imagepixel buffer and manupilate image pixel and replace to orignal pixel buffer .
thank you
samit

Samit,
I am not sure I fully understand your requirements. Do you mean that you want to obtain the pixels of the image into a byte array or memory buffer?
If yes, you can do that using the RasterImage.GetRow method.

This method can get the pixel data of the full image (all rows together) in one function call if you give it a buffer big enough to hold the full data.

If this is not what you need, please give me more details about it.

ya wanted some thing like this thank you

and can we use ur sample demo project and sample example files. then do changes and use in our own project and use it for comercial application .
thanks samit

Samit,
Yes, you can obtain a copy of the pixels using RasterImage.GetRow(), and when you finish with them, you can put them back into the image using RasterImage.SetRow().
About demos code, as a toolkit owner, you can copy from our demos and help file code samples and include that code into your own project without any problems.

thank you
samit

There is a blog post that covers different ways to access the image data.

Do it in the Buffer: Comparison of RasterImage Image Data Access Methods in .NET