large image loading

[tictac]

Hi
I want to show a large image in C#,but I recieve Out of memory error.
how can I read the smaller block of my picture and show it.I work with GDI+.
here is my code .I try to load one part of my picture but at last line of my code I recieve this error.my image is 20MB jpg with 12000*14000

Image MapImage = null;
MapImage1 = Image.FromFile("filename.jpg");
Rectangle recDes1 = new Rectangle(0, 0, 1000, 1000);
Rectangle recSrc1 = new Rectangle(0, 0, 1000, 1000);
gr.DrawImage(MapImage1, recDes1, recSrc1, GraphicsUnit.Pixel);



by regards

[Plater]

I just tried to create a bitmap of that size in mspaint and it killed it.
I think your going to need to use some Win32 APIs to only load a portion of it.

[tictac]

thanks .can you name some api that can work with image.I think I need some api to load one portion of my file to memory.can you help me please?

Regards

I just tried to create a bitmap of that size in mspaint and it killed it.
I think your going to need to use some Win32 APIs to only load a portion of it.

[Plater]

I can move you over to the C/C++ forums where someone there might know more about Win32 API for using large iamges.

DirectX might have something as well though.