TestExample https://github.com/DevExpress-Examples/mvc-datagrid-how-to-use-dropdownbox-as-a-column-editor-in-edit-mode-t576412/blob/8cc2d38eade8c09f0a4a7630ab7c15de5dc1bef8/CS/T548916/Views/Home/DxDropDownBox.cshtml#L20-L32 hello you