Question : extend DataGridViewColumn

Hi experts

I'am working on a extended DataGridView. Now, I'm struggling with the DataGridViewColumn.
What I want is not a costum Column, but rather a possibilty to add a costum property to the DataGridViewColumn.
I thought I just create a EnhancedDataGridViewColumn class which inherits from the original DataGridViewColumn class, and use it like below. Well it doesn't work, because it's readonly.

Is it even possible and how would I do that?

Code Snippet:

1: 2: 3: 4:

for(int i = 0; i < this.Columns.Count;i++) { this.Columns[i] = (EnhancedDataGridViewColumn)this.Columns[i]; }

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Answer : extend DataGridViewColumn

And this.

http://msdn2.microsoft.com/en-us/library/7tas5c80.aspx