Error when retrieving Date type

Question

Hi ,

 

I have one application return Customer details .

I can view all customers details except one customer it will gives me always this error "there is no row at position 0" 

 

 

code :

 

txtOrderDate.Text = System.DBNull.Value.ToString 

 

txtOrderDate.Text = Convert.ToDateTime(MyDs.Tables("OO").Rows(0)("OrderDate")).ToString("dd / MM / yyyy") .

 

I checked all Orderdate in the Database it's all same format but i don't know why it's happening
 for this customer only !!!