DisplayMemberPath concatenation

Question

I am trying to bind two values to a ComboBox display value, but I do not know how to do.

This way does not work:

cboRegion.DisplayMemberPath = \"idregion         


        

Answer 1

Unfortunately, this is not possible with DisplayMemberPath. You have the following alternatives:

• Specify a DataTemplate

  ^{(If you are wondering about the empty braces in the StringFormat attribute, see: What do the {} brackets mean in the StringFormat section of a Binding syntax?)}

• Add a property or field to your data source. How to do that depends on your data source:

  If your combo box is bound to a DataTable, add a DataColumn and fill its values in a loop. Alternatively, change your SQL and add the concatenated value to your SELECT clause.

  If your combo box is bound to a POCO or entity framework object, add a property that returns the concatenation.