combobox - Does anyone have a C# example of using an UltraDataSource as the DataSource to a UltraComboEditor please -

does have c# example of using ultradatasource datasource ultracomboeditor please.

i can far doesn't seem bind.

i have tried simple project use ultradatasource datasource simple ultracomboeditor. set properties of comboeditor

        this.ultracomboeditor1.datamember = "band 0";         this.ultracomboeditor1.datasource = this.udstest;   // <- crashed here         this.ultracomboeditor1.displaymember = "description";         this.ultracomboeditor1.name = "ultracomboeditor1";         this.ultracomboeditor1.valuemember = "id"; 

the sample program crashed nullreferenceexception inside initializecomponent code set ultradatasource instance.

then have removed setting of property datamember (not blanked out, right-click , selected reset). program works.