NotImplementedException未實現該方法或操做

使用DevExpress爲控件CheckedListBoxControl綁定DataSource時,引起異常「NotImplementedException未實現該方法或操做」,代碼以下:this

this.checkedListBoxControl.DataSource = DataAccess.BaseInfoDataAccess.Sites.Where(v => v.Site==1);
 this.checkedListBoxControl.ValueMember = "Site";
 this.checkedListBoxControl.DisplayMember = "SiteName";

在Where後加上ToList()後,解決。blog

this.checkedListBoxControl.DataSource = DataAccess.BaseInfoDataAccess.Sites.Where(v => v.Site==1).ToList();
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