Ajax，并在运行时创建动态控制 [英] ajax and dynamic control is created at run time
本文介绍了Ajax，并在运行时创建动态控制的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
您可以更正错误吗?
解析器错误消息:类型"System.Web.UI.UpdatePanel"没有名为"table"的公共属性.
我有以下代码
Can you correct the error
Parser Error Message: Type ''System.Web.UI.UpdatePanel'' does not have a public property named ''table''.
I have following code
<%@ Page Language="vb" AutoEventWireup="false" CodeBehind="WebForm1.aspx.vb" Inherits="gfln1.WebForm1" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
<title></title>
<link href="css/styles.css" rel="stylesheet" type="text/css"/>
<script type="text/javascript" runat=server>
</script>
</head>
<body>
<form id="form1" runat="server">
<asp:ScriptManager ID="ScriptManager1" runat="server" />
<asp:UpdatePanel ID="UpdatePanel1" runat="server">
<Triggers>
<asp:AsyncPostBackTrigger ControlID="RadioButtonList1" EventName="SelectedIndexChanged" />
</Triggers>
<ContentTemplate>
<asp:RadioButtonList ID="RadioButtonList1" runat="server" AutoPostBack="True" OnSelectedIndexChanged="RadioButtonList1_SelectedIndexChanged">
<asp:ListItem Text="Blue" Value="blue"></asp:ListItem>
<asp:ListItem Text="Red" Value="red"></asp:ListItem>
<asp:ListItem Text="White" Value="white"></asp:ListItem>
</asp:RadioButtonList>
<br />
<asp:TextBox ID="TextBox1" runat="server"></asp:TextBox>
</ContentTemplate>
</asp:UpdatePanel>
<div class="right_txt_space_accm">
<asp:UpdatePanel ID="UpdatePanel2" runat="server">
<Triggers>
<asp:AsyncPostBackTrigger ControlID="RadioButtonList2" EventName="SelectedIndexChanged" />
</Triggers>
<table width="100%" border="0" cellspacing="0" cellpadding="0">
<tr>
<td width="40%" align="left"><strong>Number of
attendees:</strong></td>
<td width="60%" align="left"><strong>
<ContentTemplate>
<asp:RadioButtonList EnableViewState=true ID="RadioButtonList2" CellSpacing=13 RepeatDirection=Horizontal runat="server" RepeatColumns=4 AutoPostBack="true">
<asp:ListItem>1</asp:ListItem>
<asp:ListItem>2</asp:ListItem>
<asp:ListItem>3</asp:ListItem>
<asp:ListItem>4</asp:ListItem>
<asp:ListItem>5</asp:ListItem>
<asp:ListItem>6</asp:ListItem>
<asp:ListItem>7</asp:ListItem>
</asp:RadioButtonList> </strong></td>
</ContentTemplate>
</asp:UpdatePanel>
</tr>
</table>
</div>
<asp:PlaceHolder ID="PlaceHolder1" runat="server"></asp:PlaceHolder>
</form>
</body>
</html>
Public Partial Class WebForm1
Inherits System.Web.UI.Page
Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
End Sub
Protected Sub RadioButtonList1_SelectedIndexChanged(ByVal sender As Object, ByVal e As EventArgs)
If RadioButtonList1.SelectedValue = "blue" Then
TextBox1.BackColor = System.Drawing.Color.Blue
TextBox1.ForeColor = System.Drawing.Color.White
ElseIf RadioButtonList1.SelectedValue = "red" Then
TextBox1.BackColor = System.Drawing.Color.Red
TextBox1.ForeColor = System.Drawing.Color.Black
ElseIf RadioButtonList1.SelectedValue = "white" Then
TextBox1.BackColor = System.Drawing.Color.White
TextBox1.ForeColor = System.Drawing.Color.Black
End If
End Sub
Protected Sub RadioButtonList2_SelectedIndexChanged(ByVal sender As Object, ByVal e As System.EventArgs) Handles RadioButtonList2.SelectedIndexChanged
Response.Write(RadioButtonList2.SelectedValue)
Dim index As Integer
For index = 1 To Me.RadioButtonList2.SelectedValue
Dim newdiv As New HtmlGenericControl("div")
newdiv.EnableViewState = True
Dim ht As New HtmlTable()
ht.ID = "mytable" & index
ht.EnableViewState = True
ht.Width = "100%"
ht.CellSpacing = "0"
ht.CellPadding = "0"
ht.Border = 0
Dim htr, htr1, htr2 As New HtmlTableRow()
Dim cell, htc, htc1, htc2, htc3, htc4, htc5, htc6, htc7, htc8 As New HtmlTableCell()
Dim name_tb As New TextBox()
Dim sal_ddl As New DropDownList
'validator
Dim name_req As New RequiredFieldValidator
Dim tel_req As New RequiredFieldValidator
Dim email_req As New RequiredFieldValidator
name_tb.ID = "name_tb" & index
sal_ddl.ID = "sal_ddl" & index
name_req.ID = "name_req" & index
tel_req.ID = "tel_req" & index
email_req.ID = "email_req" & index
name_tb.EnableViewState = True
sal_ddl.EnableViewState = True
tel_req.EnableViewState = True
sal_ddl.Items.Add("MR")
sal_ddl.Items.Add("Ms")
sal_ddl.Items.Add("Mrs")
Dim Tel_tb1 As New TextBox
Tel_tb1.ID = "Tel_tb1" & index
Tel_tb1.EnableViewState = True
name_tb.TextMode = TextBoxMode.SingleLine
Dim email_tb1 As New TextBox
email_tb1.ID = "email_tb1" & index
email_tb1.TextMode = TextBoxMode.SingleLine
htc.InnerText = "Name : "
htc.Width = "20%"
htc.Align = "Left"
htc1.Controls.Add(sal_ddl)
htc1.Width = "10%"
htc2.Width = "70%"
htc2.Align = "left"
htc2.Controls.Add(name_tb)
htc2.Controls.Add(name_req)
htr.Controls.Add(htc)
htr.Controls.Add(htc1)
htr.Controls.Add(htc2)
ht.Controls.Add(htr)
name_req.ControlToValidate = "name_tb" & index
name_req.Display = ValidatorDisplay.Dynamic
name_req.ErrorMessage = ("Please Enter name of attendenes")
'make 2nd row
htc3.InnerText = "Telephone : "
htc3.Width = "20%"
htc3.Align = "Left"
htc4.InnerHtml = "<strong></strong>"
htc4.Width = "10%"
htc5.Width = "70%"
htc5.Align = "left"
htc5.Controls.Add(Tel_tb1)
htc5.Controls.Add(tel_req)
htr1.Controls.Add(htc3)
htr1.Controls.Add(htc4)
htr1.Controls.Add(htc5)
ht.Controls.Add(htr1)
tel_req.ControlToValidate = "Tel_tb1" & index
tel_req.Display = ValidatorDisplay.Dynamic
tel_req.ErrorMessage = ("Please Enter Phone")
'make 3rd row
htc6.InnerText = "Email : "
htc6.Width = "20%"
htc6.Align = "Left"
htc7.InnerHtml = "<strong></strong>"
htc7.Width = "10%"
htc8.Width = "70%"
htc8.Align = "left"
htc8.Controls.Add(email_tb1)
htc8.Controls.Add(email_req)
htr2.Controls.Add(htc6)
htr2.Controls.Add(htc7)
htr2.Controls.Add(htc8)
ht.Controls.Add(htr2)
email_req.ControlToValidate = "email_tb1" & index
email_req.Display = ValidatorDisplay.Dynamic
email_req.ErrorMessage = ("Please Enter Email")
'Add a blank row
cell.ColSpan = 3
cell.InnerHtml = "<br/>"
Dim row As New HtmlTableRow
row.Cells.Add(cell)
ht.Rows.Add(row)
newdiv.Controls.Add(ht)
newdiv.Attributes.Add("table", "ht")
newdiv.Attributes.Add("Style", "border-bottom :#ccc solid 0px")
newdiv.Attributes.Add("style", "height:23px")
newdiv.Attributes.Add("style", "padding-left:20px")
Me.PlaceHolder1.Controls.Add(newdiv)
PlaceHolder1.EnableViewState = True
Next
End Sub
End Class
推荐答案
是的，这是一个错误
yes here is an error
Parser Error
Description: An error occurred during the parsing of a resource required to service this request. Please review the following specific parse error details and modify your source file appropriately.
Parser Error Message: Type 'System.Web.UI.UpdatePanel' does not have a public property named 'table'.
Source Error:
Line 37: </Triggers>
Line 38:
Line 39: <table width="100%" border="0" cellspacing="0" cellpadding="0">
Line 40: <tr>
Line 41: <td width="40%" align="left"><strong>Number of
Source File: /WebForm1.aspx Line: 39
--------------------------------------------------------------------------------
Version Information: Microsoft .NET Framework Version:2.0.50727.4927; ASP.NET Version:2.0.50727.4927
//Replace your <div class="right_txt_space_accm"> with below.
<div class="right_txt_space_accm">
<asp:UpdatePanel ID="UpdatePanel2" runat="server">
<Triggers>
<asp:AsyncPostBackTrigger ControlID="RadioButtonList2" EventName="SelectedIndexChanged" />
</Triggers><ContentTemplate>
<table width="100%" border="0" cellspacing="0" cellpadding="0">
<tr>
<td width="40%" align="left"><strong>Number of
attendees:</strong></td>
<td width="60%" align="left"><strong>
<asp:RadioButtonList EnableViewState=true ID="RadioButtonList2" CellSpacing=13 RepeatDirection=Horizontal runat="server" RepeatColumns=4 AutoPostBack="true">
<asp:ListItem>1</asp:ListItem>
<asp:ListItem>2</asp:ListItem>
<asp:ListItem>3</asp:ListItem>
<asp:ListItem>4</asp:ListItem>
<asp:ListItem>5</asp:ListItem>
<asp:ListItem>6</asp:ListItem>
<asp:ListItem>7</asp:ListItem>
</asp:RadioButtonList> </strong></td>
</tr>
</table></ContentTemplate>
</asp:UpdatePanel>
</div>
我更正了大多数无法创建div，文本框等动态控件的代码，但主要的问题是如何也使用ajax来控制回发即时消息.so我的问题是如何在后面的提交按钮代码上获取div
i corrected most of the code which had prolem to created dynamic control like div,textboxes etc ete ,but the main problme is that how to get control on postback i m using ajax too.so my question is that how to get div on submitt button code behind
Protected Sub RadioButtonList1_SelectedIndexChanged(ByVal sender As Object, ByVal e As System.EventArgs) Handles RadioButtonList1.SelectedIndexChanged
Dim index As Integer
For index = 1 To RadioButtonList1.SelectedValue
Dim newdiv As New HtmlGenericControl("div")
newdiv.ID = "mydiv" & index
'newdiv.Attributes.Add("id", "mydiv")
newdiv.EnableViewState = True
Dim ht As New HtmlTable()
ht.ID = "mytable" & index.ToString()
ht.EnableViewState = True
ht.Width = "100%"
ht.CellSpacing = "0"
ht.CellPadding = "0"
ht.Border = 0
Dim htr, htr1, htr2 As New HtmlTableRow()
Dim cell, htc, htc1, htc2, htc3, htc4, htc5, htc6, htc7, htc8 As New HtmlTableCell()
Dim name_tb As New TextBox()
Dim sal_ddl As New DropDownList
'validator
Dim name_req As New RequiredFieldValidator
Dim tel_req As New RequiredFieldValidator
Dim email_req As New RequiredFieldValidator
name_tb.ID = "name_tb" & index
sal_ddl.ID = "sal_ddl" & index
name_req.ID = "name_req" & index
tel_req.ID = "tel_req" & index
email_req.ID = "email_req" & index
name_tb.EnableViewState = True
sal_ddl.EnableViewState = True
tel_req.EnableViewState = True
sal_ddl.Items.Add("MR")
sal_ddl.Items.Add("Ms")
sal_ddl.Items.Add("Mrs")
Dim Tel_tb1 As New TextBox
Tel_tb1.ID = "Tel_tb1" & index
Tel_tb1.EnableViewState = True
name_tb.TextMode = TextBoxMode.SingleLine
Dim email_tb1 As New TextBox
email_tb1.ID = "email_tb1" & index
email_tb1.TextMode = TextBoxMode.SingleLine
htc.InnerText = "Name : "
htc.Width = "20%"
htc.Align = "Left"
htc1.Controls.Add(sal_ddl)
htc1.Width = "10%"
htc2.Width = "70%"
htc2.Align = "left"
htc2.Controls.Add(name_tb)
htc2.Controls.Add(name_req)
htr.Controls.Add(htc)
htr.Controls.Add(htc1)
htr.Controls.Add(htc2)
ht.Controls.Add(htr)
name_req.ControlToValidate = "name_tb" & index
name_req.Display = ValidatorDisplay.Dynamic
name_req.ErrorMessage = ("Please Enter name of attendenes")
'make 2nd row
htc3.InnerText = "Telephone : "
htc3.Width = "20%"
htc3.Align = "Left"
htc4.InnerHtml = "<strong></strong>"
htc4.Width = "10%"
htc5.Width = "70%"
htc5.Align = "left"
htc5.Controls.Add(Tel_tb1)
htc5.Controls.Add(tel_req)
htr1.Controls.Add(htc3)
htr1.Controls.Add(htc4)
htr1.Controls.Add(htc5)
ht.Controls.Add(htr1)
tel_req.ControlToValidate = "Tel_tb1" & index
tel_req.Display = ValidatorDisplay.Dynamic
tel_req.ErrorMessage = ("Please Enter Phone")
'make 3rd row
htc6.InnerText = "Email : "
htc6.Width = "20%"
htc6.Align = "Left"
htc7.InnerHtml = "<strong></strong>"
htc7.Width = "10%"
htc8.Width = "70%"
htc8.Align = "left"
htc8.Controls.Add(email_tb1)
htc8.Controls.Add(email_req)
htr2.Controls.Add(htc6)
htr2.Controls.Add(htc7)
htr2.Controls.Add(htc8)
ht.Controls.Add(htr2)
email_req.ControlToValidate = "email_tb1" & index
email_req.Display = ValidatorDisplay.Dynamic
email_req.ErrorMessage = ("Please Enter Email")
'Add a blank rows
cell.ColSpan = 3
cell.InnerHtml = "<br/>"
Dim row As New HtmlTableRow
row.Cells.Add(cell)
ht.Rows.Add(row)
newdiv.Controls.Add(ht)
newdiv.Attributes.Add("table", "ht")
newdiv.Attributes.Add("Style", "border-bottom :#ccc solid 0px")
newdiv.Attributes.Add("style", "height:23px")
newdiv.Attributes.Add("style", "padding-left:20px")
newdiv.EnableViewState = True
' ViewState("control") = newdiv
Me.PlaceHolder1.Controls.Add(newdiv)
PlaceHolder1.EnableViewState = True
Next
'End Sub
End Sub
<pre lang="vb">Protected Sub btn_submitt_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles btn_submitt.Click
Dim index As Integer
'MsgBox(Me.RadioButtonList1.SelectedItem.Value)
For index = 1 To RadioButtonList1.SelectedValue
Dim plholder As PlaceHolder = DirectCast(FindControl("PlaceHolder1"), PlaceHolder)
'Dim name_tb As TextBox = DirectCast(plholder.FindControl("name_tb" & index.ToString()), TextBox)
'Dim newdiv As HtmlGenericControl = DirectCast(plholder.FindControl("mydiv"), HtmlGenericControl)
Dim newdiv As HtmlGenericControl = ViewState("newdiv")
If newdiv Is Nothing Then
Response.Write("Nothing")
End If
下一个
结束子
any help ,keep posting me
next
end sub
any help ,keep posting me
这篇关于Ajax，并在运行时创建动态控制的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
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