((DropDownList)(gridView1.Rows[e.RowIndex].Cells[inedx].FindControl("DropDownList1"))).SelectedValue.ToString().Trim()

------解决方案--------------------
HTML code

<asp:TemplateField HeaderText="DropDownList " HeaderStyle-BackColor="#8bb9ee">
                        <ItemTemplate>
                        <asp:DropDownList ID="DropDownList1" Width="120px" runat="server"></asp:DropDownList>
                        </ItemTemplate>
                </asp:TemplateField>

------解决方案--------------------
string y = int.Parse(((DropDownList)GridView1.Rows[e.RowIndex].FindControl("ddlDepart")).ClientID);

------解决方案--------------------
HTML code

<asp:TemplateField HeaderText="学历">
  <ItemTemplate>
     <%# Eval("xueliText")%>
       </ItemTemplate>
           <EditItemTemplate>
             <asp:DropDownList ID="DDLXueli" runat="server" Width="90px" />
           </EditItemTemplate>
  <ItemStyle Width="100px" />
</asp:TemplateField>

------解决方案--------------------
string xueli = (GridView1.Rows[e.RowIndex].FindControl("DDLXueli") as DropDownList).SelectedValue;


------解决方案--------------------
protected void GridView1_RowDataBound(object sender, GridViewRowEventArgs e)  
{  
 if (e.Row.RowType == DataControlRowType.DataRow)  
 {  
   System.Data.DataRowView drv = (System.Data.DataRowView)e.Row.DataItem;    RadioButtonList rbl = (RadioButtonList)e.Row.FindControl("txtGender");  
   if (rbl != null)  
   {  
     if ((bool)drv["Gender"])  
     {  
       rbl.Items.FindByText("男").Selected = true;  
     }  
     else  
     {  
       rbl.Items.FindByText("女").Selected = true;  
     }  
   }  

   DropDownList ddl = (DropDownList)e.Row.FindControl("txtClassName");  
   if (ddl != null)  
   {  
     ddl.Items.FindByValue(drv["ClassID"].ToString()).Selected = true; ///这是根据VALUE查找  
   }  
 }  
}  


------解决方案--------------------
探讨

dorpDownList 名称是指什么？


------解决方案--------------------
 名称当然是说他的ＩＤ
string y = int.Parse(((DropDownList)GridView1.Rows[e.RowIndex].FindControl("ddlDepart")).ClientID);

------解决方案--------------------

1.当知道每一个DropDownList的Name的时候。
string xueli = ((DropDownList)GridView1.Rows[e.RowIndex].FindControl("DropDownList1")).SelectedValue;或者（SelectedItem.Text）
2.当不知道DropDownList的Name的时候。
  string xueli = ((DropDownList)GridView1.Rows[e.RowIndex].Controls[0]).SelectedValue;或者（SelectedItem.Text）

------解决方案--------------------
探讨

C# code((DropDownList)(gridView1.Rows[e.RowIndex].Cells[inedx].FindControl("DropDownList1"))).SelectedValue.ToString().Trim()