DataSource: I selected dataTable1 ReadOnly: I changed this to True TableStyles: I clicked the <b>...</b>-button and added a tablestyle GridColumnStyle: I clicked the <b>...</b>-button and added 16 gridcolumnstyles For each of the dataGridTextBoxColumns (1-16) I set the Width property to a different valueI could send you the cs file off-line if you would like to take a look at it.