GridView如何知道哪行的RadioButton被选中了

Question

<asp:GridView ID="GridView1" runat="server">
            <Columns>
                <asp:TemplateField HeaderText="Radio">
                    <ItemTemplate>
                        <asp:RadioButton ID="RadioButton1" runat="server" />
                    </ItemTemplate>
                </asp:TemplateField>
            </Columns>我就是在GridView中的第1列加了一列模板列，里面放了一个RadioButton，后台C#我如何知道选中了哪行的RadioButton

Answer 1

protected void GridView1_RowDataBound(object sender, GridViewRowEventArgs e)
{
  CheckBox cbox = (CheckBox)e.Rows.FindControl("CheckBox1")
  if (cbox.Checked == true)
                {
                  //.....
                }         }

Answer 2

RadioButton RadioButton1=(RadioButton)GridView1.coloums[0].findControl("RadioButton1");
自己手写的，逻辑就是这个逻辑，可能有些地方拼错了，自己理解一下吧

Answer 3

int rowid = ((GridViewRow)((RadioButton)sender).Parent.Parent).RowIndex;

Answer 4

先找到控件  然后后台遍历 判断Checked 是否为true

Answer 5

其实我还是比较倾向于这种方式的，但
Columns[0].FindControl报错了，列没有FindControl的函数

Answer 6

        /// <summary>
        /// 获取选中记录的Id集合
        /// </summary>
        /// <returns></returns>
        private string get_selected()
        {
            CheckBox cb;
            ArrayList al = new ArrayList();
            for (int i = 0; i < GridView1.Rows.Count; i++)
            {
                cb = (CheckBox)GridView1.Rows[i].Cells[0].FindControl("del");
                if (cb.Checked)
                {
                    al.Add((string)GridView1.Rows[i].Cells[1].Text);
                }
            }            string ids = "(";
            for (int i = 0; i < al.Count; i++)
            {
                ids += al[i].ToString();
                if (i + 1 != al.Count)
                {
                    ids += ",";
                }
            }
            ids += ")";            return ids;
        }

Answer 7

其实我是想把获取当前RadioButton的按钮放在GridView外边的，所以没有sender，现在在纠结是用JavaScript的Button还是用C#的

Answer 8

(RadioButton)GridView1.Rows[i].Cell[0].findControl("RadioButton1");

Answer 9

CheckBox cbox = (CheckBox)e.Rows.FindControl("Cchk")
  if (cbox.Checked == true)
                {
                  //.....
                }         
先找到控件 然后后台遍历 判断Checked 是否为true

Answer 10

但是我发现个问题，就是用模板列添加进去的RadioButton，即使N个RadioButton填了GroupName也没用

Answer 11

Using a RadioButton to select a row in GridViewSome people need radiobutton for selection a row in gridview control and take a action after postback.You should to use this code to resolve this issue.<asp:GridView ID="_grid" runat="server" AutoGenerateColumns="False">
  <Columns>
    <asp:TemplateField>
      <ItemTemplate>
        <asp:PlaceHolder runat="server" ID="_holder" /></ItemTemplate>
    </asp:TemplateField>
    <asp:BoundField DataField="Id" HeaderText="Id" />
    <asp:BoundField DataField="Name" HeaderText="Name" />
  </Columns>
</asp:GridView>This is code behind:
partial class SampleGridViewUI : Page
{
  protected override void OnInit(EventArgs e)
  {
    base.OnInit(e);
    this._grid.RowDataBound += new GridViewRowEventHandler( this.Grid_RowDataBound );
    this._go.Click += new EventHandler( this.Go_Click );
  }
  protected override void OnLoad(EventArgs e)
  {
    base.OnLoad(e);
    if ( ! this.IsPostBack )
    {
      this._grid.DataSource = this.Values;
      this._grid.DataBind();
    }
  }
  public IEnumerable<Group> Values
  {
    get
    {
      yield return new Group(1, "Administrators");
      yield return new Group(2, "Users");
      yield return new Group(3, "Power Users");
    }
  }
  private void Grid_RowDataBound( Object sender, GridViewRowEventArgs e )
  {
    if (e.Row.RowType == DataControlRowType.DataRow)
    {
      Group group = (Group)e.Row.DataItem;
      PlaceHolder holder = (PlaceHolder)e.Row.FindControl("_holder");
      String innerhtml = String.Format("<input type='radio' name='sample' value='{0}'>", group.Id);
      holder.Controls.Add(TemplateControl.ParseControl(innerhtml));
    }
  }
  private void Go_Click(Object sender, EventArgs e)
  {
    String line = String.Format( "Id='{0}'", this.Request[ "sample" ] );
    this.Response.Write(line);
  }
  public struct Group
  {
    private Int32 _id;
    private String _name;
    public Group(
      Int32 id,
      String name)
    {
      this._id = id;
      this._name = name;
    }
    public Int32 Id { get { return this._id; } }
    public String Name { get { return this._name; } }
  }
}In Go_Click private function you should take a action with Group ID in Request[ "Sample" ] variable posted.