Question

我在google上搜索但是我无法找到解决方案。但是我的视觉工作室2010中没有工作或者e.row工作。我怎么能得到这个属性。当我点击＆＃34时我想要它;编辑＆＃34;按钮然后gridview有不同的columsn和一个列名是＆＃34;数据类型＆＃34;然后这个专栏填写＆＃34;下拉列表＆＃34;我从下拉列表中选择值。我的下拉控件ID为＆＃34; dropdownlist1＆＃34;我怎么能这样做？。这是我的代码＆＃34; gridview编辑＆＃34;事件代码：

protected void GridView2_RowEditing(object sender, GridViewEditEventArgs e)
{
  DataTable t = (DataTable)Session["MyDataTable"];
  GridView2.EditIndex = e.NewEditIndex;
  DropDownList ddlName =
                (DropDownList)e.Row.FindControl("dropdownlist1"); // HERE IS ERROR AT "Row" 
  ddlName.DataTextField = "Data Type";
  ddlName.DataValueField = "Data Type";
  GridView2.DataSource = t;
  GridView2.DataBind();
}

这是我的aspx代码：

  <asp:GridView ID="GridView2" runat="server" AutoGenerateDeleteButton="True" 
        AutoGenerateEditButton="True" BackColor="#DEBA84" BorderColor="#DEBA84" 
        BorderStyle="None" BorderWidth="1px" CellPadding="3" CellSpacing="2" 
        ShowHeaderWhenEmpty="True" onrowcancelingedit="GridView2_RowCancelingEdit" 
        onrowdeleting="GridView2_RowDeleting" onrowediting="GridView2_RowEditing" 
        onrowupdating="GridView2_RowUpdating" AutoGenerateColumns="False" 
        Width="92px">
        <FooterStyle BackColor="#F7DFB5" ForeColor="#8C4510" />
        <HeaderStyle BackColor="#A55129" Font-Bold="True" ForeColor="White" />
        <PagerStyle ForeColor="#8C4510" HorizontalAlign="Center" />
        <RowStyle BackColor="#FFF7E7" ForeColor="#8C4510" />
        <SelectedRowStyle BackColor="#738A9C" Font-Bold="True" ForeColor="White" />
        <SortedAscendingCellStyle BackColor="#FFF1D4" />
        <SortedAscendingHeaderStyle BackColor="#B95C30" />
        <SortedDescendingCellStyle BackColor="#F1E5CE" />
        <SortedDescendingHeaderStyle BackColor="#93451F" />
    </asp:GridView>

</div>
<asp:TextBox ID="TextBox1" runat="server" Width="137px"></asp:TextBox>
<asp:DropDownList ID="DropDownList1" runat="server" Height="20px" 
    onselectedindexchanged="DropDownList1_SelectedIndexChanged" Width="140px">
    <asp:ListItem>int</asp:ListItem>
    <asp:ListItem>Varchar</asp:ListItem>
</asp:DropDownList>
<asp:CheckBox ID="Null" runat="server" />
<asp:CheckBox ID="Primary" runat="server" />
<asp:Button ID="Button1" runat="server" onclick="Button1_Click" Text="Insert" 
    style="margin-left: 59px" Width="56px" />
<asp:Button ID="Button2" runat="server" Height="33px" style="margin-left: 76px" 
    Text="Create Table" Width="94px" />

我是在正确的方式吗？或者我该怎么做？还告诉我如何更新gridview行。我在gridview中手动插入值。没有数据库连接等等。谢谢

Answer 1

您可以使用索引检索行：

GridViewRow row = GridView2.Rows[e.NewEditIndex];

的更新

您可以将DropDownList放在GridView的TemplateField中：

<asp:GridView ...> ... <asp:TemplateField> <ItemTemplate> <asp:Literal runat="server" Text='<%# DataBinder.Eval(Container.DataItem, "DataTypeValue")) %>' /> </ItemTemplate> <EditItemTemplate> <asp:DropDownList ID="ddlTypeName" runat="server" ... /> </EditItemTemplate> </asp:TemplateField> ... </asp:GridView>

（我展示了一个可选的ItemTemplate，以防你想要显示所选的数据类型）

然后您可以在事件处理程序中检索DropDownList：

GridViewRow row = GridView2.Rows[e.NewEditIndex]; DropDownList ddlTypeName = (DropDownList)row.FindControl("ddlTypeName"); ...

如何在编辑gridview时添加手动控件？ ASP.NET C＃

1 个答案: