如何清除以下错误:如何清除错误
Only one instance of a ScriptManager can be added to the page. Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.
Exception Details: System.InvalidOperationException: Only one instance of a ScriptManager can be added to the page.
Source Error: An unhandled exception was generated during the execution of the current web request.
Information regarding the origin and location of the exception can be identified using the exception stack trace below.
以下是我的HTML标记:
<%@ Page Language="C#" AutoEventWireup="true" MasterPageFile="~/MasterPage.master"
CodeFile="ManualReport.aspx.cs" Inherits="ManualReport" %>
<%@ Register assembly="Telerik.Web.UI" namespace="Telerik.Web.UI"
tagprefix="telerik" %>
<asp:Content ContentPlaceHolderID="ContentPlaceHolder1" runat="server"
ID="ContentPlaceHolder1">
<%@ Register Assembly="Microsoft.ReportViewer.WebForms, Version=9.0.0.0,
Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a"
Namespace="Microsoft.Reporting.WebForms" TagPrefix="rsweb" %>
<form id="mainform" runat="server"><table width="100%" >
<asp:ScriptManager ID="ScriptManager2" runat="server">
</asp:ScriptManager>
<asp:ScriptManager ID="ScriptManager1" runat="server">
</asp:ScriptManager>
</form>
<div>
<tr><td>Customer Name</td><td>
<asp:RadioButton ID="rdbcustomerAll" runat="server" Visible ="false"
GroupName="CustomerValidation"
Text="All" Checked="false" /></td><td>
<asp:RadioButton ID="rdbcustomerSpecific" runat="server"
GroupName="CustomerValidation" Visible="false" Text="Spec" Checked="true" /></td></
td><td>
<asp:DropDownList ID="cmbName" runat="server">
</asp:DropDownList></td></tr>
<tr><td>Date</td><td><asp:RadioButton ID="rdbDateAll" runat="server"
Visible ="false" GroupName="DateValidation"
Text="All" /></td><td>
<asp:RadioButton ID="rdbDateSpec" runat="server" Visible ="false" Checked="true" GroupName="DateValidation" Text="Spec" /></td><td>
<telerik:RadDatePicker ID="rdpDate" runat="server" xmlns:telerik="telerik.web.ui">
</telerik:RadDatePicker>
</td></tr>
你有一个严重的问题,构建您的ASPX标记。这超出了'ScriptManager'重复的问题。我相信你需要阅读一些关于asp.net的教程。其中很多... – 2011-06-04 06:25:11