Сhange type column in datagrid

Using wpf: Сhange type column in datagrid on newest questions tagged wpf – Stack Overflow

MySqlCommand cmd = new MySqlCommand(query, conn);
dt.Load(cmd.ExecuteReader());
source.DataSource = dt;
dataGrid1.ItemsSource = source;

In my datagrid I want to change the column type with DateTime to String, how can I do this?

source is

System.Windows.Forms.BindingSource source = new System.Windows.Forms.BindingSource();

source: http://stackoverflow.com/questions/11466381/hange-type-column-in-datagrid
Using wpf: using-wpf