In Standard Form, we saw one Value ,(Description or Value). When I try to User Form , It does not Show. Why ? Is it Possible to Show Data Description only.
I Used DISPLAYDESC= TRUE Option , It works only after select Data ,Description only displayed in the ComboBox.
In BP MASTER >> IN USER CODE Field ,data displays only User Code not User Name.
Setting DisplayDesc attribute to True is correct way. However, in some cases you may have to set the property manually in code by writing "myComboBox.Item.DisplayDesc = true;" under the OnInitializeComponent() class to trigger the property.
Also about your examples. User Code won't display User Name as description because they are two different fields. They don't have Value/Description relationship between each other. To display the User Name you have to add another TextBox and bind it.
And note that Value and Description are attributes of a single column. When you set DisplayDesc attribute to True for a TextBox or ComboBox this means that item will be displaying the Description of the bounded DataSource field.