Hi LanMo,
For a DateTimePickerAdv, you need to bind to the BindableValue property. Please see the below given code snippet :
ptmpDateTimePicker.DataBindings.Add(new System.Windows.Forms.Binding("BindableValue", mGridDataSet.Tables[mFormParam.TableName],ColumnName);
Also please take a look at the following KB Article.
How can you setup databinding to your DateTimePickerAdv ?
Best Regards,
Anu.