Windows Forms FAQ resources

5. Windows Forms Datagrid

5.35 How do I set the width of a column in my DataGrid?

To set a column width, your datagrid must be using a non-null DataGridTableStyle. Once this is in place, you can set the column width by first getting the tablestyle and then using that object to obtain a column style with which you can set the width. Here are some code snippets showing how you might do this.

//.... make sure your DataGrid is using a tablestyle

dataGrid1.DataSource = _dataSet.Tables["customers"];

DataGridTableStyle dgts = new DataGridTableStyle();

dgts.MappingName = "customers";

dataGrid1.TableStyles.Add(dgts);

//......

//method to set a column with by colnumber

public void SetColWidth(DataGridTableStyle tableStyle, int colNum, int width)

{

try

{

tableStyle.GridColumnStyles[colNum].Width = width;

tableStyle.DataGrid.Refresh();

}

catch{} //empty catch .. do nothing

}

//....

// here is how you might call this method

private void button1_Click(object sender, System.EventArgs e)

{

DataGridTableStyle tableStyle = dataGrid1.TableStyles["customers"];

SetColWidth(tableStyle, 1, 200);

}