++++还是GridView中添加Droplist的问题++++

[gaoweipeng7851]

gridview中的代码：
<asp:GridView ID="GVUserPower" runat="server" Width="100%" style="text-align: center" AutoGenerateColumns="False" DataKeyNames="用户名" OnRowCancelingEdit="GVUserPower_RowCancelingEdit" OnRowDataBound="GVUserPower_RowDataBound" OnRowDeleting="GVUserPower_RowDeleting" OnRowEditing="GVUserPower_RowEditing" OnRowUpdating="GVUserPower_RowUpdating">
<Columns>
<asp:BoundField DataField="用户名" HeaderText="用户名" ReadOnly="True" />
<asp:BoundField DataField="用户密码" HeaderText="用户密码" ReadOnly="True" />
<asp:TemplateField HeaderText="管理权限">
<EditItemTemplate>
<asp:DropDownList ID="DLManage" runat="server" Width="60px">
<asp:ListItem>有</asp:ListItem>
<asp:ListItem>无</asp:ListItem>
</asp:DropDownList>
</EditItemTemplate>
<ItemTemplate>
<asp:Label ID="lblManage" runat="server" Text='<%# Bind("管理权限") %>'></asp:Label>
</ItemTemplate>
</asp:TemplateField>
我添加的droplist的数据不是数据绑定的，是自己手动添加进去的。
想实现在编辑状态下，droplist中的值保持原有的值。
protected void GVUserPower_RowDataBound(object sender, GridViewRowEventArgs e)
{
if (e.Row.RowState.ToString().IndexOf("Edit") >= 0)//如果处于编辑状态
{
string UserName = e.Row.Cells[0].Text;
string sql = "select 管理权限 from 权限表 where 用户名='"+UserName+"'";

DataSet ds = opls.GetTable(sql, "权限表");
string manage=ds.Tables[0].Rows[0]["管理权限"].ToString();
Label lblManage = (Label)e.Row.Cells[2].FindControl("lblManage");
lblManage.Text = manage;
DropDownList dlist1 = (DropDownList)e.Row.Cells[2].FindControl("DLManage");
//dlist1.SelectedIndex = dlist1.Items.IndexOf(dlist1.Items.FindByText(lblManage.Text));
dlist1.DataSource = ds;
dlist1.DataTextField = "管理权限";
dlist1.DataValueField = "管理权限";
dlist1.DataBind();
}
}
如果这样的话，编辑的时候是能保存原有的值，但是droplist中只有绑定的一个值，没法进行修改
请问高手怎么解决，droplist中的值尽量不要绑定

[surewy]

mark

[criedshy]

protected void GVUserPower_RowDataBound(object sender, GridViewRowEventArgs e) 
    { 
       if (e.Row.RowState.ToString().IndexOf("Edit") >= 0)//如果处于编辑状态 
        { 
           
            Label lblManage = (Label)e.Row.Cells[2].FindControl("lblManage"); 
            DropDownList dlist1 = (DropDownList)e.Row.Cells[2].FindControl("DLManage"); 
            dlist1 .Items.FindByText(lblManage.Text).Selected=true;
        } 
} 

[gaoweipeng7851]

[Quote=引用 1 楼 criedshy 的回复:]
C# codeprotected void GVUserPower_RowDataBound(object sender, GridViewRowEventArgs e)
{
if (e.Row.RowState.ToString().IndexOf("Edit") >= 0)//如果处于编辑状态
{

Label lblManage = (Label)e.Row.Cells[2].FindControl("lblManage");
DropDownList dlist1 = (DropDownList)e.Row.Cells[2].FindControl("DLManage");
dlist1 .Items.Fi…
[/Quote]
会报错啊!dlist1.Items.FindByText(lblManage.Text).Selected = true;
未将对象引用设置到对象的实例。
高手帮忙

[criedshy]

protected void GVUserPower_RowDataBound(object sender, GridViewRowEventArgs e) 
    { 
        if (e.Row.RowState.ToString().IndexOf("Edit") >= 0)//如果处于编辑状态 
        { 
            string UserName = e.Row.Cells[0].Text; 
            string sql = "select 管理权限 from 权限表 where 用户名='"+UserName+"'"; 
            
            DataSet ds = opls.GetTable(sql, "权限表"); 
            string manage=ds.Tables[0].Rows[0]["管理权限"].ToString(); 
            Label lblManage = (Label)e.Row.Cells[2].FindControl("lblManage"); 
            lblManage.Text = manage; 
            DropDownList dlist1 = (DropDownList)e.Row.Cells[2].FindControl("DLManage"); 
            dlist1.Items.FindByText(manage).Selected=true;
         } 
} 

[gaoweipeng7851]

[Quote=引用 3 楼 criedshy 的回复:]
C# codeprotected void GVUserPower_RowDataBound(object sender, GridViewRowEventArgs e)
{
if (e.Row.RowState.ToString().IndexOf("Edit") >= 0)//如果处于编辑状态
{
string UserName = e.Row.Cells[0].Text;
string sql = "select 管理权限 from 权限表 where 用户名='"+UserName+"'";

DataSet ds = opls.GetTable(sql, "权限表");
…
[/Quote]
还是会报错， lblManage.Text = manage;
未将对象引用设置到对象的实例。
以前我也是这么弄的，就报着个错
高手帮忙

[icerain911]

关注！！

[criedshy]

[Quote=引用 4 楼 gaoweipeng 的回复:]
引用 3 楼 criedshy 的回复:
C# codeprotected void GVUserPower_RowDataBound(object sender, GridViewRowEventArgs e)
{
if (e.Row.RowState.ToString().IndexOf("Edit") >= 0)//如果处于编辑状态
{
string UserName = e.Row.Cells[0].Text;
string sql = "select 管理权限 from 权限表 where 用户名='"+UserName+"'";

DataSet ds = opls…
[/Quote]

protected void GVUserPower_RowDataBound(object sender, GridViewRowEventArgs e) 
    { 
        if (e.Row.RowState.ToString().IndexOf("Edit") >= 0)//如果处于编辑状态 
        { 
            string UserName = e.Row.Cells[0].Text; 
            string sql = "select 管理权限 from 权限表 where 用户名='"+UserName+"'"; 
            
            DataSet ds = opls.GetTable(sql, "权限表"); 
            string manage=ds.Tables[0].Rows[0]["管理权限"].ToString(); 
            DropDownList dlist1 = (DropDownList)e.Row.Cells[2].FindControl("DLManage"); 
            dlist1.Items.FindByText(manage).Selected=true;
         } 
} 

把给label赋值的去掉, 编辑状态是找不到label的

[QQ306832666]

可以把DropDownList 的绑定放入当页面第一次加载里
就是 if (!IsPostBack)
{
.......

}

[evan311314]

_RowEditing