User can't resize DataGridView columns

Question

I have a DataGridView with the datasource set to a binding source of data. My problem is I cannot get most of the columns to resize. Several of the columns don't show a resize cursor, while two others do: one can be resized, one cannot.

Here is what I have tried:

• DGV.AllowUsertoResizeColumns = True
• DGV.AutoSizeColumnMode = None
• DGV.RowHeadersWidthSizeMode = EnableResizing
• DGV.Dock = Fill
• All Columns having AutoSizeMode = NoneSet and Resizable = True
• The DGV is embedded in a panel of a SplitContainer, yet after bringing it to front, the others to back, or other random combinations, still unable to resize
• Using dataGridView1.AutoResizeColumns(DataGridViewAutoSizeColumnsMode.ColumnHeader) (and other variations) after data has been loaded into the DGV
• While I'm able to resize one of the columns, the settings in the Columns collection are no different from the others

Here's a screenshot of the properties of my DataGridView:

Any Ideas?

Answer 1

Upon checking the individual column settings in the gridview, I found some cells still had

AutoSizeMode = AllCells

I changed this to:

AutoSizeMode = NotSet

and now I am able to resize all columns.

Answer 2

Set:

AutoSizeColumnsMode = none