<asp:Repeater ID="rptUserList" runat="server" OnItemCommand="rptUserList_ItemCommand">
<ItemTemplate>
<tr>
<td>
<asp:CheckBox ID="chkDel" runat="server" />
</td>
<td style="word-break: break-all" align="center">
<asp:Literal runat="server" ID="ltlId" Text=' <%#Eval("Id")%>' Visible="false"> </asp:Literal>
<%# Eval("UserName")%>
</td>
<td>
<asp:DropDownList ID="ddlRole" runat="server"
AutoPostBack="true"
OnSelectedIndexChanged="ddlRole_SelectedIndexChanged">
</asp:DropDownList> </td>
--------------------------------------------------------------
protected void ddlRole_SelectedIndexChanged(object sender, EventArgs e)
{
// Response.Write(((DropDownList)sender).SelectedValue);
DropDownList ddlRole = (DropDownList)sender;
int roleId = Convert.ToInt32(ddlRole.SelectedValue);
Repeater rptUserList = ddlRole.Parent.Parent as Repeater;
int n = ((RepeaterItem)ddlRole.Parent).ItemIndex;
int Id = Convert.ToInt32(((Literal)(rptUserList.Items[n].FindControl("ltlId"))).Text);
//....下面写进数据库操作
//....
}