如何把客户端数据传到服务器端

duan_yuying 2010-07-14 02:01:48
各位大虾帮帮忙
通过js 给 table 添加了动态行，填写内容的时候，动态改变了lable的值，但提交的时候在后台找不到添加的动态行，lable的值也还是原来的值，这个怎么解决



<table id = "table_perform" runat ="server" class="table" width ="100%" visible ="false" >

    <tr>

        <td class ="td0">

            <textarea id = "performArea_0" name = "performArea_0" runat ="server" cols ="40" rows ="2"></textarea>

        </td>

        <td class ="td1">

            <input type ="text" id ="performWeight_0" name = "performWeight_0" runat ="server" onchange ="countWeight('table')" style="width :30px" />

        </td>

        <td class ="td2">

            <textarea id = "performAction_0" name ="performAction_0" runat ="server" cols ="48" rows ="2"></textarea>

        </td>

        <td class ="td3">

            <select id = "GradesSelfA_0" name="GradesSelfA_0" runat = "server" style ="width:65px"></select>

        </td>

        <td class ="td4">

            <select id = "Supvr_0" name ="Supvr_0" runat = "server" style ="width:85px"></select>

        </td>

    </tr>

</table>

<input type = "button" runat ="server" id ="addTR" onclick ="Add_tr()" value="添加一行"/>   

<input type = "button" runat ="server" id ="delTR" onclick ="Del_tr()" value="删除最后一行"/>   

<asp:Label ID="lb_WeightTotal" runat="server" Text="" ></asp:Label>

js:


    function countWeight(obj)

    {

        var WeightT = 0;

        if (document.getElementById("<%=gv_perform.ClientID%>"))

        {

            var weightArr;

            weightArr = document.getElementById("<%=gv_perform.ClientID%>").getElementsByTagName("input");

            if(weightArr.length>0){

                for(var i = 0; i < weightArr.length; i++)

                {  

                    if(weightArr[i].id.indexOf("tb_weight"))

                    {

                        var weight = parseInt(weightArr[i].value);

                        if(weight<=100 && weight >0)

                        {

                            WeightT += parseInt(weightArr[i].value);

                        }

                        else

                        {

                            alert ("权重必须是0到100之间的数字！");

                        }

                    }

                }

            }

        }

        if (document .getElementById ("table_perform"))

        {

            var rowCount = table_perform .rows .length;

            for (var i=0 ;i< rowCount ;i++)

            {

                if (document .all["performWeight_"+i].value == "" || document .all["performWeight_"+i].value ==null)

                {



                }

                else 

                {

                    var weight = parseInt(document .all["performWeight_"+i].value);

                    if(weight<=100 && weight >0)

                    {

                        WeightT += parseInt(document .all["performWeight_"+i].value);

                    }

                    else

                    {

                        alert ("权重必须是0到100之间的数字！");

                    }

                }

            }

        }

        document .all["lb_WeightTotal"].innerHTML = WeightT ;

        if(WeightT >100) alert ("权重和必须等于100！");

    };

    function Add_tr()

    {

        if (linenum ==0)

        {

            getoption ();

        }

        linenum =linenum +1;

        var tableobj = document .getElementById ("table_perform");

        var trobj = document .createElement ("tr");

        //trobj .setAttribute ("id","tr"+linenum);



        // 添加td0

        var tdobj0 = document .createElement ("td");

        tdobj0 .setAttribute ("className","td0");

        var Areaobj = document .createElement ("textarea");

        Areaobj.setAttribute ("id","performArea_"+linenum );

        Areaobj.setAttribute ("name","performArea_"+linenum );

        Areaobj .setAttribute ("runat","server");

        Areaobj .setAttribute ("cols","40");

        Areaobj .setAttribute ("rows","2");

        tdobj0 .appendChild(Areaobj );

        trobj .appendChild (tdobj0 );

                

        // 添加td1

        var tdobj1 = document .createElement ("td");

        tdobj1 .setAttribute ("className","td1");

        var Weightobj = document .createElement ("input");

        Weightobj.setAttribute ("id","performWeight_"+linenum );

        Weightobj.setAttribute ("name","performWeight_"+linenum );

        Weightobj.setAttribute ("runat","server");

        Weightobj.setAttribute ("type","text");

        //Weightobj.style.width = "30px";

        tdobj1 .appendChild(Weightobj );

        trobj .appendChild (tdobj1 );



        // 添加td2

        var tdobj2 = document .createElement ("td");

        tdobj2 .setAttribute ("className","td2");

        var Actionobj = document .createElement ("textarea");

        Actionobj.setAttribute ("id","performAction_"+linenum );

        Actionobj.setAttribute ("name","performAction_"+linenum );

        Actionobj .setAttribute ("runat","server");

        Actionobj .setAttribute ("cols","48");

        Actionobj .setAttribute ("rows","2");

        tdobj2 .appendChild(Actionobj );

        trobj .appendChild (tdobj2 );



        // 添加td3

        var tdobj3 = document .createElement ("td");

        tdobj3 .setAttribute ("className","td3");

        var Gradeobj = document .createElement ("select");

        Gradeobj.setAttribute ("id","GradesSelfA_"+linenum );

        Gradeobj.setAttribute ("name","GradesSelfA_"+linenum );

        Gradeobj.setAttribute ("runat","server");

        //Gradeobj.style.width = "70px";

        tdobj3 .appendChild(Gradeobj );

        trobj .appendChild (tdobj3 );



        // 添加td4

        var tdobj4 = document .createElement ("td");

        tdobj4 .setAttribute ("className","td4");

        var Supvrobj = document .createElement ("select");

        Supvrobj.setAttribute ("id","Supvr_"+linenum );

        Supvrobj.setAttribute ("name","Supvr_"+linenum );

        Supvrobj.setAttribute ("runat","server");

        //Supvrobj.style.width = "90px";

        tdobj4 .appendChild(Supvrobj );

        trobj .appendChild (tdobj4 );



        tableobj .firstChild .appendChild (trobj);

        setoption1 ("GradesSelfA_"+linenum );

        setoption2 ("Supvr_"+linenum );

        document .getElementById ("performWeight_"+linenum ).style.width = "30px";

        document .getElementById ("GradesSelfA_"+linenum ).style.width = "65px";

        document .getElementById ("Supvr_"+linenum ).style.width = "85px";

        document .getElementById ("performWeight_"+linenum ).onchange = function(){countWeight ('table')};

    };


后台代码在下页

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happy664618843 2010-07-19
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用Request.Form[]取值
duan_yuying 2010-07-19
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lable是动态添加的，提交之后就找不到了，所以使用了<input type ="hidden"> 把值给存了下来，在后台就可以取到了，谢谢两位
cntmi 2010-07-15
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如果你确实修改成功了，应该在后台就能拿到，你在提交之前，把label的值弹出来看看，到底有没有修改
kaifadi 2010-07-15
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JS还混了ASP代码，看的头晕，直接用AJAX提交到后台不就得了！
duan_yuying 2010-07-14
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各位大虾帮帮忙，在线等，谢谢了
duan_yuying 2010-07-14
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后台代码：


   Protected Sub submitt_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles submitt.Click

        Dim PerformTotal As String = lb_WeightTotal.Text.ToString.Trim

        If PerformTotal = "" Or PerformTotal <> "100" Then

            Dim type As Type = Me.GetType

            Page.ClientScript.RegisterStartupScript(type, "wrong", "alert('业绩指标的权重小计应为100,请修改权重！');", True)

        Else

            '判断是否已经提交过工作内容及自评

            Dim EKID As String = Request.QueryString("EKID")

            Dim sqlcommon1 As sqlCommon = New sqlCommon()

            Dim pams1 As SqlParameter() = {New SqlParameter("@EKID", EKID)}

            Dim dsIsExit As DataSet = New DataSet()

            sqlcommon1.RunProc("Proc_MyWork_IsExit", pams1, dsIsExit)

            If dsIsExit.Tables.Count > 1 Then

                If dsIsExit.Tables(0).Rows.Count > 0 And dsIsExit.Tables(0).Rows(0).Item(0) > 0 Then

                    IsExit1 = True

                End If

                If dsIsExit.Tables(1).Rows.Count > 0 And dsIsExit.Tables(1).Rows(0).Item(0) > 0 Then

                    IsExit2 = True

                End If

            End If



            Dim sqlcommon As sqlCommon = New sqlCommon()

            Dim sqlText As String = ""

            sqlText += " BEGIN TRANSACTION "

            If gv_perform.Visible = True Then

                For i As Integer = 0 To gv_perform.Rows.Count - 1

                    Dim ACID As String = gv_perform.Rows(i).Cells(0).Text.ToString

                    Dim tb_area As TextBox = gv_perform.Rows(i).FindControl("tb_area")

                    Dim tb_weight As TextBox = gv_perform.Rows(i).FindControl("tb_weight")

                    Dim tb_action As TextBox = gv_perform.Rows(i).FindControl("tb_action")

                    Dim ddl_GradesSelf_A As DropDownList = gv_perform.Rows(i).FindControl("ddl_GradesSelf_A")

                    Dim ddl_Supvr As DropDownList = gv_perform.Rows(i).FindControl("ddl_Supvr")



                    sqlText += "update T_AssessContent set Key_Performance_Area ='" + tb_area.Text.ToString.Replace("'", "''").Replace(System.Environment.NewLine, "<br>") + "',weight=" + tb_weight.Text.ToString.Trim + ",Action = '" + tb_action.Text.ToString.Replace("'", "''").Replace(System.Environment.NewLine, "<br>") + "',Self_Appraisal='" + ddl_GradesSelf_A.SelectedValue.ToString.Trim + "',SupvrWid=" + ddl_Supvr.SelectedValue.ToString.Trim + " where ACID =" + ACID.ToString.Trim

                Next

            End If

            If table_perform.Visible = True Then

                For i As Integer = 0 To table_perform.Rows.Count - 1

                    Dim performArea As HtmlTextArea = table_perform.Rows(i).FindControl("performArea_" + i.ToString)

                    Dim performWeight As HtmlInputText = table_perform.Rows(i).FindControl("performWeight_" + i.ToString)

                    Dim performAction As HtmlTextArea = table_perform.Rows(i).FindControl("performAction_" + i.ToString)

                    Dim GradesSelfA As HtmlSelect = table_perform.Rows(i).FindControl("GradesSelfA_" + i.ToString)

                    Dim Supvr As HtmlSelect = table_perform.Rows(i).FindControl("Supvr_" + i.ToString)



                    sqlText += "insert into T_AssessContent(EKID,ParentQid,Key_Performance_Area,weight,Action,Self_Appraisal,SupvrWid)values(" + EKID + ",1,'" + performArea.InnerText.ToString.Replace("'", "''").Replace(System.Environment.NewLine, "<br>") + "'," + performWeight.Value.ToString + ",'" + performAction.InnerText.ToString.Replace("'", "''").Replace(System.Environment.NewLine, "<br>") + "','" + GradesSelfA.Value.ToString.Trim + "'," + Supvr.Value.ToString + ")"

                Next

            End If

             sqlText += " COMMIT "

            If sqlcommon.RunSqltext(sqlText) = 1 Then

                Dim type As Type = Me.GetType

                Page.ClientScript.RegisterStartupScript(type, "wrong", "alert('提交成功！')", True)

                Response.Write("<script > window.open('','_self');top.opener=null;top.close();</script>")

            Else

                Dim type As Type = Me.GetType

                Page.ClientScript.RegisterStartupScript(type, "wrong", "alert('提交失败,请重新检查数据！');", True)

            End If

        End If

    End Sub
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