this.ID_DEPARTMENT.ClearSelection();
//清除已选项
ListItem item = ID_DEPARTMENT.Items.FindByText(department.Trim()); //根据一个值"department.Trim()"查找是否droplist里有
if (item != null) item.Selected = true; //有的话选择为默认值
ListItem item = ID_DEPARTMENT.Items.FindByText(department.Trim()); //根据一个值"department.Trim()"查找是否droplist里有
if (item != null) item.Selected = true; //有的话选择为默认值