[求助在线等]GridView的EditItemTemplate中的控件，在行绑定事件中找不到？

[yixian2007]

前台如下

<asp:GridView ID="gv" runat="server" AutoGenerateColumns="False" DataKeyNames="UserID" OnRowDataBound="gv_RowDataBound"
            OnRowEditing="gv_RowEditing" OnRowCancelingEdit="gv_RowCancelingEdit"  OnRowUpdating="gv_RowUpdating" >
            <Columns>
                <asp:CommandField ShowEditButton="True" />
                <asp:BoundField DataField="UserID" HeaderText="登陆名" ReadOnly="true" />
                <asp:TemplateField HeaderText="密码">
                    <EditItemTemplate>
                        <asp:TextBox ID="tbPwd" runat="server" Text='<%# Bind("UserPwd") %>' Width="300px"></asp:TextBox>
                    </EditItemTemplate>
                    <ItemTemplate>
                        <asp:Label ID="lbPwd" runat="server" Text='<%# Bind("UserPwd") %>'></asp:Label>
                    </ItemTemplate>
                </asp:TemplateField>
                <asp:TemplateField HeaderText="名字">
                    <EditItemTemplate>
                        <asp:TextBox ID="tbName" runat="server" Text='<%# Bind("UserName") %>' Width="300px"></asp:TextBox>
                    </EditItemTemplate>
                    <ItemTemplate>
                        <asp:Label ID="lbName" runat="server" Text='<%# Bind("UserName") %>'></asp:Label>
                    </ItemTemplate>
                </asp:TemplateField>
                <asp:TemplateField HeaderText="学院">
                    <EditItemTemplate>
                        <asp:DropDownList ID="ddlDeptCur" runat="server"></asp:DropDownList>
                    </EditItemTemplate>
                    <ItemTemplate>
                        <asp:Label ID="lbDeptName" runat="server" Text='<%# Bind("DeptID") %>'></asp:Label>
                    </ItemTemplate>
                </asp:TemplateField>
                <asp:BoundField DataField="RoleID" HeaderText="角色" ReadOnly="true" />
            </Columns>
        </asp:GridView>

后台事件如下：

protected void gv_RowDataBound(object sender, GridViewRowEventArgs e)
    {
        if (e.Row.RowType == DataControlRowType.DataRow)
        {
            DropDownList ddlDeptCur = (DropDownList)e.Row.FindControl("ddlDeptCur");
            ddlDeptCur.DataValueField = "DeptID";
            ddlDeptCur.DataTextField = "DeptName";
            ddlDeptCur.DataSource = deptList.ToList();
            ddlDeptCur.DataBind();
            ddlDeptCur.SelectedValue = DataBinder.Eval(e.Row.DataItem, "DeptID").ToString();
        }
    }

奇怪的很，ddlDeptCur 控件总是为空，找不到控件？难道在EditItemTemplate不是这样找的吗？

[yixian2007]

<asp:GridView ID="gv" runat="server" AutoGenerateColumns="False" DataKeyNames="UserID" OnRowDataBound="gv_RowDataBound"
            OnRowEditing="gv_RowEditing" OnRowCancelingEdit="gv_RowCancelingEdit"  OnRowUpdating="gv_RowUpdating" >
            <Columns>
                <asp:CommandField ShowEditButton="True" />
                 <asp:TemplateField HeaderText="学院">
                    <EditItemTemplate>
                        <asp:DropDownList ID="ddlDeptCur" runat="server"></asp:DropDownList>
                    </EditItemTemplate>
                    <ItemTemplate>
                        <asp:Label ID="lbDeptName" runat="server" Text='<%# Bind("DeptID") %>'></asp:Label>
                    </ItemTemplate>
                </asp:TemplateField>
                <asp:BoundField DataField="RoleID" HeaderText="角色" ReadOnly="true" />
            </Columns>
        </asp:GridView>

这是前台， <EditItemTemplate> <asp:DropDownList ID="ddlDeptCur" runat="server"></asp:DropDownList> </EditItemTemplate> 在这里面，上面的可能不清楚，加了个颜色，结果显示不出来，哈哈。

[rokerker]

首先 你确定后台能查到这个字段的值吗，DeptID。就是说页面展示的时候，对应的后台数据里面是不是包含了这个字段DeptID

[Hello World,]

<EditItemTemplate>里面的控件只在编辑状态时才会生成

[yixian2007]

没人理我，帮忙顶起来啊。

[yixian2007]

已经解决，解决方法是在RowEditing事件中绑定，但在绑定控件之前，还要先绑定一个gridview，这样才行。 例子如下：

protected void gv_RowEditing(object sender, GridViewEditEventArgs e)
    {
        gv.EditIndex = e.NewEditIndex;
        BindData();
        DropDownList ddlDeptCur = (DropDownList)gv.Rows[e.NewEditIndex].FindControl("ddlDeptCur");
        //res_Dept deptAll = new res_Dept();
        //deptAll.DeptID = "00";
        //deptAll.DeptName = "全部";
        //List<res_Dept> delist = deptList.ToList();
        //delist.Insert(0, deptAll);
        ddlDeptCur.DataValueField = "DeptID";
        ddlDeptCur.DataTextField = "DeptName";
        ddlDeptCur.DataSource = deptList.ToList();
        ddlDeptCur.DataBind();
        ddlDeptCur.SelectedValue = gv.DataKeys[e.NewEditIndex].Values[1].ToString();
        
    }

[yixian2007]

必须重新绑定GridView，这样后面的绑定才有效。