How to set a grid column width?

Hi all!

With

DataGrid1.PreferredColumnWidth = DefaultWidth

I can set the default starting width for each column.

But How can I set a width for a single Column?

Thank you!

// create table style
foreach(DataTable t in data.Tables)
{
dataGridTableStyle1.MappingName = t.TableName;
dataGrid1.TableStyles.Add(dataGridTableStyle1);
}

dataGrid1.SetDataBinding(data, "table");
DBs.Close();

// set the column widths
GridColumnStylesCollection myGridColumns;
myGridColumns = dataGrid1.TableStyles[0].GridColumnStyles;
myGridColumns[0].Width = 90;
myGridColumns[1].Width = 200;
myGridColumns[2].Width = 75;
myGridColumns[3].Width = 75;