索引超出范围。必须为负值并小于集合大小“参数名：index(d在线)

Question

 protected void GridView1_RowDeleting(object sender, GridViewDeleteEventArgs  e)
    {
        String strsql = "delete from 评价标准 where 二级指标=" + GridView1.DataKeys[e.RowIndex].Value.ToString()+"" ;
        
       
        BaseClass1.execsql(strsql);
        bindgrig();    }
GridView里面增加了一个删除列，单击删除时，发生了“索引超出范围。必须为负值并小于集合大小“参数名：index

Answer 1

断点进去，看看这个e.RowIndex值为多少

Answer 2

  <asp:LinkButton ID="LinkButton2" runat="server" CommandName="delete" CausesValidation="False"  OnClientClick="return confirm('确认要删除吗？');">删除</asp:LinkButton>
  protected void GridView1_RowDeleting(object sender, GridViewDeleteEventArgs e)
        {
            int id=Convert.ToInt32(GridView1.DataKeys[e.RowIndex].Value));
           //删除
            BindData();
        }

Answer 3

  <asp:LinkButton ID="LinkButton2" runat="server" CommandName="delete" CausesValidation="False"  OnClientClick="return confirm('确认要删除吗？');">删除</asp:LinkButton>
  protected void GridView1_RowDeleting(object sender, GridViewDeleteEventArgs e)
        {
            int id=Convert.ToInt32(GridView1.DataKeys[e.RowIndex].Value));
           //删除
            BindData();
        }

Answer 4

怀疑 GridView1.DataKeys[e.RowIndex].Value=-1

Answer 5

 GridView1.DataKeys[e.RowIndex].Value有可能等于-1