试试这个，



创建一个方法代码背后

Try this,

Create a method in the code behind

public string GetYearMonth(string value, string flag)
       {
           var items = value.Split('-');
           if (items.Length == 2)
           {
               if (flag =="y")
                   return items[0].Trim();
               else
                   return items[1].Trim();
           }
           return "- Select -";

       }

ASPX：

ASPX:

<asp:DropDownList ID="ddlExpYear" SelectedValue='<%# GetYearMonth(Eval("Experiance").ToString(),"y")%>' runat="server">
.
.

<asp:DropDownList ID="ddlExpMonth" SelectedValue='<%# GetYearMonth(Eval("Experiance").ToString(),"m")%>'     runat="server">
.
.
.