Wow, the WPF Toolkit has just been released and already I had a email from someone wanting to know how to use the DatePicker in a DataGrid! Here is a very basic example < toolkit : DataGridTemplateColumn Header ="Date Of Birth"> < toolkit : DataGridTemplateColumn.CellTemplate > < DataTemplate > < toolkit : DatePicker SelectedDate ="{ Binding DOB }" /> </ DataTemplate > </ toolkit : DataGridTemplateColumn.CellTemplate > </ toolkit : DataGridTemplateColumn...