DevExpress 绑定下拉框数据

Question

从Controller 传递viewdata 到view 通过下面的代码将传递过来的数据绑定到下拉文本框中，但是预览的时候没有任何数据显示 前端用的是DevExpress ，请大牛帮忙看一下！@Html.DevExpress().ComboBox(settings =>{settings.Name = "ComBox_MediaType";settings.Width = Unit.Percentage(100);settings.Properties.ValueType = typeof(string);settings.Properties.TextField = "Name";settings.Properties.ValueField = "ID";settings.PreRender = (sender, e) =>{MVCxComboBox cmb = sender as MVCxComboBox;cmb.Value =" ";};settings.Properties.ClientSideEvents.SelectedIndexChanged = "SelectedMediaType";}).BindList(ViewData["MediaTypeList"]).GetHtml()