gridview取行索引和行绑定

 前台添加一模版列,里面添加一个Button
<asp:TemplateField HeaderText="测试">
                                  <ItemTemplate>
                                      <asp:Button ID="Button1" CommandName="btn" runat="server" Style="position: relative" Text="Button" />
                                  </ItemTemplate>
                              </asp:TemplateField>


后台

protected void gv_Company_RowCommand(object sender, GridViewCommandEventArgs e)
    {
        if (e.CommandName == "btn")
        {
            int index = Convert.ToInt32(e.CommandArgument);
             DataKey key = this.gv_Company.DataKeys[index];
            string tt = key.Value.ToString();

             Response.Write(tt);
         }
     }

    //行数据绑定
    protected void gv_Company_RowDataBound(object sender, GridViewRowEventArgs e)
    {
        if (e.Row.RowType == DataControlRowType.DataRow)
        {
             Button bt = new Button();
             bt = (Button)e.Row.Cells[6].FindControl("Button1");
             bt.CommandArgument = e.Row.RowIndex.ToString();
         }
     }