TemplateField中点击button的事件响应

我在TemplateField中放了一个Button,CommanName的属性为Edit，想点击这个按钮后会有响应事件，同时这个Button变为不可见,代码如下
protected void GridView2_RowEditing(object sender, GridViewEditEventArgs e)
{
for (int i = 0; i < this.GridView2.Rows.Count; i++)
{
(this.GridView2.Rows[i].FindControl("Button3") as Button).Visible = false;
}

    string answerid = GridView2.DataKeys[e.NewEditIndex].Value.ToString();

    int temp = answerBLL.AdoptAnswer(answerid);
    string questionId = Session["questionId"].ToString();
    DataTable dt = questionBLL.SearchQuestionByQuestionId(questionId);
    GridView1.DataSource = dt;
    GridView1.DataBind();
    DataTable dt2 = answerBLL.SearchAnswersByQuestionId(questionId);
    GridView2.DataSource = dt2;
    GridView2.DataBind();
}
    但点击后Button没消失，事件也没响应
    代码换成
        protected void GridView2_RowEditing(object sender, GridViewEditEventArgs e)
{
    for (int i = 0; i < this.GridView2.Rows.Count; i++)
    {
        (this.GridView2.Rows[i].FindControl("Button3") as Button).Visible = false;
    }
}
    Button就可以消失了，但没加处理事件的函数
    新手求问

http://www.yrom.net/blog/2011/12/12/android-4-onclicklistener-of-button/

http://www.yrom.net/blog/2011/12/12/android-4-onclicklistener-of-button/