Take a moment to peruse the WinForms DataGrid - Column Sizing documentation, where you can find about Column Sizing with code examples.
This sample illustrates how to adjust width of WPF DataGrid (SfDataGrid) when hiding columns using ColumnChooser. In WPF DataGrid(SfDataGrid) while hiding the columns using ColumnChooser, empty space ...
Some results have been hidden because they may be inaccessible to you
Show inaccessible results