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Editorial Team
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Asked: 2026-05-11T17:15:42+00:00

I have a DataGridView which I add data to programatically. I have the AutoSizeRowsMode

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I have a DataGridView which I add data to programatically. I have the AutoSizeRowsMode set to AllCells and the WrapMode on RowsDefaultCellStyle set to True. If I add a multiline row to the DataGridView it shows up fine (autoscaling the row to show the multiple lines). However, if I hide the column that has the multiline data (so that the columns left only have single line data) the row resizes to single row but when I reshow the hidden column the rows aren’t resized. If I resize the form then the rows will correct.

The following code shows how I am toggling the visibility of the column:
notificationDataGridView.Columns[1].Visible = !notificationDataGridView.Columns[1].Visible;

Can anyone help me out with how to fix this? I’ve tried every combination of Invalidate and Refresh I can think of.

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1 Answer

  1. Editorial Team

    Ok, I don’t know if this is a bug in the DataGridView or whatever, but here’s a hack to make it work. After the call to:

    notificationDataGridView.Columns[1].Visible = !notificationDataGridView.Columns[1].Visible;

    add these two lines of code:

    notificationDataGridView.DefaultCellStyle.WrapMode = DataGridViewTriState.NotSet;
notificationDataGridView.DefaultCellStyle.WrapMode = DataGridViewTriState.True;

    Don’t ask me why, but this seems to work. If anyone has a better solution, please post it!

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