c#为什么点击网页的刷新按钮后会执行button按钮事件里的内容啊？

Question

c#为什么点击网页的刷新按钮后会执行button按钮事件里的内容啊？
我在页面添加了<asp:Button ID="btn_huitie" runat="server" onclick="btn_huitie_Click" Text="回 帖" />按钮，点击之后添加成功，然后再点刷新按钮（F５），为什么会执行回帖按钮里面的内容啊？谢谢大家帮我啊

Answer 1

楼主，为什么不发到C#版，我帮你转过去吧。
本版是讨论VC的。

Answer 2

wenxy1我是该把帖子结了,把分给你吗?

Answer 3

如果一个页面表单,在提交后,如果再刷新此页,将根据viewstate回传执行按钮事件重复提交. 
可用IsPostBack

Answer 4

就是最下面的那个按扭
namespace dtt.Web
{
    public partial class detilTie2 : System.Web.UI.Page
    {
        int tid = 0;
        protected void Page_Load(object sender, EventArgs e)
        {
            string tids = Request.Params["tid"];
            tid = Convert.ToInt32(tids);
            this.dq_uname.Text = Session["uname"].ToString();
            this.dq_uid.Text = Session["uid"].ToString();
            if (!IsPostBack)
            {
                query();
                showHuiTie();
            }
        }
        public void query()
        {
            if (tid != 0)
            {
                dtt.BLL.faTie bll = new dtt.BLL.faTie();
                DataSet ds = bll.GetList("tid=" + tid);
                this.tid1.Text = tid.ToString();
                this.TextArea1.Value = ds.Tables[0].Rows[0][1].ToString();
                this.uname.Text = ds.Tables[0].Rows[0][2].ToString();            }        }
        public void showHuiTie()
        {
            dtt.BLL.huiTie bll = new dtt.BLL.huiTie();
            DataSet ds = bll.GetList(0,"tid=" + tid + "and rrid="+0,"rid desc");
          
            StringBuilder sb = new StringBuilder();
            for (int i = 0; i < ds.Tables[0].Rows.Count; i++)
            {
                sb.Append("<table id='tabl_"+i+"' border='1'><tr><th>回帖id</th><th>回帖人id</th><th>原帖子id</th><th>rrid</th></tr>");
                sb.Append("<tr><td>'" + ds.Tables[0].Rows[i][0] + "'</td><td>'" + ds.Tables[0].Rows[i][1] + "'</td><td>'" + ds.Tables[0].Rows[i][2] + "'</td><td>'" + ds.Tables[0].Rows[i][4] + "'</td></tr>");
                sb.Append("<tr width='40' height='100'><td colspan='4'><input id='dw_" + ds.Tables[0].Rows[i][0] + "' type='text' disabled='disabled' value='" + ds.Tables[0].Rows[i][3].ToString() + "' style='height: 149px; width: 750px' /></td></tr>");
               // sb.Append("<tr><td colspan='4'><input id='rr_" + ds.Tables[0].Rows[i][0] + "' type='button' value='回帖' onclick='return Button2_onclick(rid=" + ds.Tables[0].Rows[i][0] + ")' /></td></tr>");
                sb.Append("</table>");                DataSet ds2 = bll.GetList("tid=" + tid + "and rrid=" + ds.Tables[0].Rows[i][0]);
                if (ds2 != null)
                { 
                    for (int j = 0; j < ds2.Tables[0].Rows.Count; j++)
                    { 
                        sb.Append("<table id='tabl2_" + j + "' border='1'><tr><th>rid</th><th>回帖人id</th><th>原帖子id</th><th>针对哪个回复来回复的</th></tr>");
                        sb.Append("<tr><td>'" + ds2.Tables[0].Rows[j][0] + "'</td><td>'" + ds2.Tables[0].Rows[j][1] + "'</td><td>'" + ds2.Tables[0].Rows[j][2] + "'</td><td>'" + ds2.Tables[0].Rows[j][4] + "'</td></tr>");
                        sb.Append("<tr width='40' height='100'><td colspan='4'><input id='dw2_" + ds2.Tables[0].Rows[j][0] + "' type='text' disabled='disabled' value='" + ds2.Tables[0].Rows[j][3].ToString() + "' style='height: 149px; width: 750px' /></td></tr>");
                       // sb.Append("<tr><td colspan='4'><input id='rr_" + ds2.Tables[0].Rows[i][0] + "' type='button' value='回帖' onclick='return Button2_onclick(rid=" + ds2.Tables[0].Rows[i][0] + ")' /></td></tr>");
                        //sb.Append("</table>");
                    }
                }
                sb.Append("<tr><td colspan='4'><input id='rr_" + ds.Tables[0].Rows[i][0] + "' type='button' value='回帖' onclick='return Button2_onclick(rid=" + ds.Tables[0].Rows[i][0] + ")' /></td></tr>");
                sb.Append("</table><hr/><br/><br/>");
                 
            }
            PlaceHolder1.Controls.Add(new LiteralControl(sb.ToString()));
        }        protected void btn_huitie_Click(object sender, EventArgs e)
        {
            dtt.Model.huiTie model = new dtt.Model.huiTie();
            model.uid = Convert.ToInt32(Session["uid"]);
            model.tid = tid;
            model.r_reirong = txt_huitie.Text;
            model.rrid = 0;
            dtt.BLL.huiTie bll = new dtt.BLL.huiTie();
            int i = bll.Add(model);
            if (i > 0)
            {
                Response.Write("回帖成功。");
                txt_huitie.Text = "";
                showHuiTie();
            }
            else
            {
                Response.Write("回帖失败。");
            }
        }
    }
}

Answer 5

这怎么改呢?
namespace dtt.Web 
{ 
    public partial class detilTie2 : System.Web.UI.Page 
    { 
        int tid = 0; 
        protected void Page_Load(object sender, EventArgs e) 
        { 
            string tids = Request.Params["tid"]; 
            tid = Convert.ToInt32(tids); 
            this.dq_uname.Text = Session["uname"].ToString(); 
            this.dq_uid.Text = Session["uid"].ToString(); 
            if (!IsPostBack) 
            { 
                query(); 
                showHuiTie(); 
            } 
        } 
        public void query() 
        { 
            if (tid != 0) 
            { 
               //
            }         } 
        public void showHuiTie() 
        { 
              // 
        }         protected void btn_huitie_Click(object sender, EventArgs e) 
        { 
            dtt.Model.huiTie model = new dtt.Model.huiTie(); 
            model.uid = Convert.ToInt32(Session["uid"]); 
            model.tid = tid; 
            model.r_reirong = txt_huitie.Text; 
            model.rrid = 0; 
            dtt.BLL.huiTie bll = new dtt.BLL.huiTie(); 
            int i = bll.Add(model); 
            if (i > 0) 
            { 
                Response.Write("回帖成功。"); 
                txt_huitie.Text = ""; 
                showHuiTie(); 
            } 
            else 
            { 
                Response.Write("回帖失败。"); 
            } 
        } 
    } 
}