If a datagridview has a lot of columns (more o less 20) there is not possibile to write to it, we must move to another cell to enable it.
Deleting some columns it return to work.
I attach example
Hi Christian, we use the DGV in extremely complex configuration with hundreds of columns, nested rows, etc.
I changed your test and added 100 more columns:
Can you please verify if you have a js error in Chrome (F12), or contact me directly so I can setup a remote session in case you still have the issue.
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