更改下拉列表选择时的GridView [英] GridView on change of dropdown list selection

问题描述

所以我有一个gridview.gridview中的一列具有所有行的下拉列表.更改任何gridview下拉框选择时是否可以触发方法?

So I have a gridview. One of the columns in the gridview has a drop down list for all rows. Is it possible to fire a method when any of the gridview drop down boxes selection is changed?

我尝试在项目模板中为下拉列表添加onselectedindexchange，但它不起作用.

I tried adding the onselectedindexchange for the drop down list in the item template but it did not work.

有什么想法吗?

<Gridview>
   <Columns>
      <asp:TemplateField>
         <ItemTemplate>
            <asp:DropDownList runat="server">
               <asp:ListItem Value="Yes">Yes</asp:ListItem>
               <asp:ListItem Value="No">No</asp:ListItem>
            </asp:DropDownList>
         </ItemTemplate>
      </asp:TemplateField>
   </Columns>
</GridView>

推荐答案

您可以使用更改的选定索引来假设这是网格内部的下拉列表

You can use selected index changed to suppose this is the dropdown inside your grid

<Gridview>
   <Columns>
      <asp:TemplateField>
         <ItemTemplate>
             <asp:DropDownList ID="DropDownList1" runat="server" AutoPostBack="True"
                  onselectedindexchanged="DropDownList1_SelectedIndexChanged">
               <asp:ListItem>4</asp:ListItem>
               <asp:ListItem>3</asp:ListItem>
              </asp:DropDownList>
         </ItemTemplate>
      </asp:TemplateField>
   </Columns>
</GridView>

您可以具有以下功能

protected void DropDownList1_SelectedIndexChanged(object sender, EventArgs e)
{
     DropDownList ddl = (DropDownList)sender;
     GridViewRow row = (GridViewRow)ddl.Parent.Parent;
     int idx = row.RowIndex;
     // TextBox txtECustCode = (TextBox)row.Cells[0].FindControl("txtECustCode");

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