单选按钮在我的 GridView 中不起作用

Question

我有一个 GridView。每行都有一个文本框和一个单选按钮（3个选项）

如果单选按钮被选中，那么 textbox.text = ""

问题：当调用 OnSelectedIndexChanged 时，我的网格中的每个文本框都变成空白

如何只清除我在其中选择了单选按钮的行的文本框？

ASPX 标记

<asp:GridView id="mygrid" Runat="server">
   <Columns>            
       <asp:TemplateField>
           <ItemTemplate>
               <asp:RadioButtonList ID="hi" runat="server" 
                    OnSelectedIndexChanged="zzz" AutoPostBack="true" />
               <asp:TextBox ID="txPregoeiro" runat="server" Text="." />
           </ItemTemplate>
       </asp:TemplateField>
   </Columns>
</asp:GridView>

C# 代码隐藏

protected void zzz(object sender, EventArgs e)
{
    foreach (GridViewRow _row in mygrid.Rows)
    {
        if (_row.RowType == DataControlRowType.DataRow)
        {
            RadioButtonList hi = (RadioButtonList)_row.FindControl("hi");
            TextBox txPregoeiro = (TextBox)_row.FindControl("txPregoeiro");
            txPregoeiro.Text = string.Empty;
        }
    }
}

Answer 1

您目前正在为每一行执行此操作，这将清除每个文本框。试试这个。

 protected void zzz(object sender, EventArgs e)
    {
        var caller = (RadionButtonList)sender;

        foreach (GridViewRow _row in mygrid.Rows)
        {
            if (_row.RowType == DataControlRowType.DataRow)
            {
                RadioButtonList hi = (RadioButtonList)_row.FindControl("hi");

                if(hi == caller) 
                {
                  TextBox txPregoeiro = (TextBox)_row.FindControl("txPregoeiro");
                  txPregoeiro.Text = string.Empty;
                  break; //a match was found break from the loop
                }
            }
        }
    }

Answer 2

您没有检查单选按钮列表是否有选定的项目。因此，您总是将文本框文本设置为空白。将函数更改为：

    GridViewRow _row = mygrid.SelectedRow;
    if (_row.RowType == DataControlRowType.DataRow)
    {
        RadioButtonList hi = (RadioButtonList)_row.FindControl("hi");
        if(hi.SelectedItem != null) //This checks to see if a radio button in the list was selected
        {
            TextBox txPregoeiro = (TextBox)_row.FindControl("txPregoeiro");
            txPregoeiro.Text = string.Empty;
        }   
    }

单选按钮在我的 GridView 中不起作用

Radio Button doesn't work inside my GridView

c#

gridview

radio-button