Troubleshooting "Parameter is Not Valid" Error When Creating Large Bitmaps in C#

When attempting to create a bitmap with dimensions larger than 19000 pixels in C#, you may encounter the error "Parameter is not valid." This error stems from the limitations imposed on contiguous memory allocation in the .NET framework.

To overcome this limitation, consider that the memory required for an image is calculated using the formula: bit-depth width height / 8. For an image of 20000 x 20000 pixels, this equates to over 1.2 gigabytes of memory.

One potential solution is to reduce the dimensions of the bitmap to fall within the acceptable range. Alternatively, you can split the image into smaller sections and process them separately. This approach does not require a single large contiguous memory allocation.

For further guidance, refer to the following resources:

• MSDN Forum:
• Microsoft Docs: