GridView内按钮Click之后取值

 Reference Code:

  protected   void  GridView1_RowCreated( object  sender, GridViewRowEventArgs e)
     ... {
        if (e.Row.RowType == DataControlRowType.DataRow)
        ...{
            if (e.Row.FindControl("Button1") != null)
            ...{
                Button btn = (Button)e.Row.FindControl("Button1");
                btn.Click += new EventHandler(btn_Click);
            }
        }
    }

     private   void  btn_Click( object  sender, EventArgs e)
     ... {
        Button btn = (Button)sender;
        GridViewRow gvr = (GridViewRow)btn.Parent.Parent;
        string pk = GridView1.DataKeys[gvr.RowIndex].Value.ToString();

        this.Label1.Text = pk;
    }