GridView RowCommand 获取列值

    //根据按钮属性，进行操作
    protected void GridView1_RowCommand(object sender, GridViewCommandEventArgs e)
    {
        if (e.CommandName == "Insert" && Page.IsValid)
        {
            BluePrintDataSource.Insert();
            SendUserToLastPage = true;
        }
        if (e.CommandName == "AddStage")
        {
            int index = Convert.ToInt32(e.CommandArgument);
            DataKey key = this.GridView1.DataKeys[index];
            BluePrintID = Convert.ToInt32(key.Value);
            FormView1.Visible = true;
            Label Label2 = (Label)this.GridView1.Rows[index].Cells[1].FindControl("Label2");
            LabelMessage.Text = " - 您现在正在为项目编号为：" + Label2.Text.ToString() + " 添加阶段记录";
        }
    }