那些遇到过的问题

命名空间"System.Web.UI.WebControls"中不存在类型或命名空间名称"ToolkitScriptManager"

Anu*_*sha 5 asp.net ajax ajaxcontroltoolkit .net-assembly

我收到以下错误

  The type or namespace name 'ToolkitScriptManager' does not exist in the namespace 'System.Web.UI.WebControls' (are you missing an assembly reference?)  
  The type or namespace name 'ModalPopupExtender' does not exist in the namespace 'System.Web.UI.WebControls' (are you missing an assembly reference?)  
  The type or namespace name 'Accordion' does not exist in the namespace 'System.Web.UI.WebControls' (are you missing an assembly reference?)
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我已经安装了ajaxControlToolKit,我在web.config文件中有这个

<pages controlRenderingCompatibilityVersion="3.5" clientIDMode="AutoID"><controls>
    <add tagPrefix="ajaxToolkit" assembly="AjaxControlToolkit" namespace="AjaxControlToolkit" />
  </controls></pages>
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我的.aspx页面

 <%@ Page Language="C#" AutoEventWireup="true"       CodeBehind="PaintBrushCanvas.aspx.cs" Inherits="VirtualClassroom.PaintBrushCanvas" %>
 <%@ Register Assembly="AjaxControlToolkit" Namespace="AjaxControlToolkit" TagPrefix="ajaxToolkit" %>
 <!DOCTYPE html>

<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<title>Paint Brush</title>
 <style type="text/css">
  #container { position: relative; overflow: auto; scrollbar-base-color:#ffeaff;  }
  #imageView { border: 1px dashed #CCCCCC; margin: 5px; border-style: dotted; border-width: 1px; background-color: #FFFFFF; vertical-align: top;  }
  #imageTemp { position: absolute; top: 1px; left: 1px; margin: 5px; }
  #imageTempt { position: absolute; top: 1px; left: 1px; margin: 5px; }
</style>
<link href="../StyleSheet.css" rel="stylesheet" type="text/css" />   
<script type="text/javascript" src="CanvasUtils.js"></script>

 <script type="text/javascript">
    window.moveTo(0, 0);
    window.resizeTo(screen.width, screen.height);
 </script>
</head>
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<asp:ToolkitScriptManager ID="ToolkitScriptManager1" runat="server" EnablePageMethods="true">
</asp:ToolkitScriptManager>
<asp:ModalPopupExtender ID="ModalPopupExtender1" runat="server" BehaviorID="MPBehaviorIDOpen" 
    TargetControlID="btnPopupRender" PopupControlID="panelOpen" BackgroundCssClass="modalBackground"
    PopupDragHandleControlID="panelOpenHead" OkControlID="btnOKOpen" CancelControlID="btnCancelOpen" /> 
<asp:ModalPopupExtender ID="ModalPopupExtender2" runat="server" BehaviorID="MPBehaviorIDResize" 
    TargetControlID="btnPopupRender" PopupControlID="panelPageSize" BackgroundCssClass="modalBackground"
    PopupDragHandleControlID="panelPageSizeHead" OkControlID="btnPageSizeOK" CancelControlID="btnPageSizeCancel" /> 

<div>
    <asp:Button id="btnPopupRender" Height="0px" Width="0px" runat="server" style="display:none;" />
</div>
<table style="height: 100%; vertical-align: top; width: 100%;">
    <tr>
        <td style="height: 100%; vertical-align: top;">
            <asp:Accordion ID="MyAccordion" runat="server" SelectedIndex="0" 
                                HeaderCssClass="accordionHeader" ContentCssClass="accordionContent" 
                                FadeTransitions="true" FramesPerSecond="40" TransitionDuration="250"
                                AutoSize="None" CssClass="accordionStyle" Width="140">
             <Panes>
                <asp:AccordionPane ID="AccordionPane1" runat="server">
                  <Header>Toolbox</Header>
                  <Content>
                    <asp:ImageButton ID="btnOpen" runat="server"  Width="40px" Height="40px"
                                   OnClientClick="ShowPopup(event,'MPBehaviorIDOpen'); return false;" ImageUrl="~/Images/open.png" /><br />
                    <asp:Label ID="Label1" runat="server" Text="Open"></asp:Label><br /> <br />
                    <asp:ImageButton ID="btnPageSize" runat="server"  Width="40px" Height="40px"
                                   OnClientClick="ShowPopup(event,'MPBehaviorIDResize'); return false;" ImageUrl="~/Images/paperSettings.png" /><br />
                    <asp:Label ID="Label5" runat="server" Text="Page Size"></asp:Label><br /> <br />
                    <asp:ImageButton ID="btnDraw" runat="server"  Width="40px" Height="40px" 
                                   OnClientClick="SelectTool('pencil'); return false;" ImageUrl="~/Images/draw.png" /><br />
                    <asp:Label runat="server" Text="Draw"></asp:Label><br /><br />
                    <asp:ImageButton ID="btnText" runat="server" Width="40px" Height="40px" 
                                   OnClientClick="SelectTool('text'); return false;" ImageUrl="~/Images/text.png" /><br />
                    <asp:Label ID="Label2" runat="server" Text="Text"></asp:Label><br /><br />
                    <asp:ImageButton ID="btnLine" runat="server" Width="40px" Height="40px" 
                                   OnClientClick="SelectTool('line'); return false;" ImageUrl="~/Images/line.png" /><br />
                    <asp:Label runat="server" Text="Line"></asp:Label><br /><br />
                    <asp:ImageButton ID="btnSquare" runat="server" Width="40px" Height="40px" 
                                   OnClientClick="SelectTool('rect'); return false;" ImageUrl="~/Images/square.png" /><br />
                    <asp:Label runat="server" Text="Square"></asp:Label><br /><br />
                    <asp:ImageButton ID="btnSave" runat="server" Width="40px" Height="40px" 
                                    OnClientClick="SaveDrawings();return false;"  ImageUrl="~/Images/save.png" /><br />
                    <asp:Label ID="Label11" runat="server" Text="Save"></asp:Label><br /><br />
                    <asp:ImageButton ID="btnExit" runat="server" Width="40px" Height="40px" 
                                    OnClientClick="Exit();return false;"  ImageUrl="~/Images/exit.png" /><br />
                    <asp:Label ID="Label3" runat="server" Text="Exit"></asp:Label><br /><br />
                  </Content>
                </asp:AccordionPane>
             </Panes>
            </asp:Accordion>
        </td>
        <td style="height: 100%; vertical-align: top; ">
            <div id="container">
                <canvas id="imageView"></canvas> 
            </div>
        </td>
    </tr>
</table>

<div id="panelOpen" class="modalPopup" style="display:none;">
    <div id="panelOpenHead" class="popupHeader">
        <p>Choose File</p>
    </div>
    <div style="text-align:center;">
        <p>
            <input id="fileUploadImg" type="file" accept="image/*"  />
        </p>
        <p>
            <input type="button" id="btnOKOpen" value="OK" onclick="UpdateCanvas(); return false;" />
            <input type="button" id="btnCancelOpen" value="Cancel" />
        </p>
    </div>
</div>

<div id="panelPageSize" class="modalPopup" style="display:none;">
    <div id="panelPageSizeHead" class="popupHeader">
        <p>Page Size</p>
    </div>
    <div style="text-align:center;">
        <p>
            Enter Width: <input type="text" id="txtWidth" style="width:100px;" /> px
        </p>
        <p>
            Enter Height: <input type="text" id="txtHeight" style="width:100px;" /> px
        </p>
        <p>
            <input type="button" id="btnPageSizeOK" value="OK" onclick="Resize(); return false;" />
            <input type="button" id="btnPageSizeCancel" value="Cancel" />
        </p>
    </div>
</div>

</form>
 </body>
</html>
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这是我的web.config文件

  <?xml version="1.0" encoding="utf-8"?>
 <!--
 For more information on how to configure your ASP.NET application, please    visit
  http://go.microsoft.com/fwlink/?LinkId=169433
  -->

<configuration>
  <configSections>
    <sectionGroup name="system.web.extensions"      type="System.Web.Configuration.SystemWebExtensionsSectionGroup, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35">
  <sectionGroup name="scripting" type="System.Web.Configuration.ScriptingSectionGroup, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35">
    <section name="scriptResourceHandler" type="System.Web.Configuration.ScriptingScriptResourceHandlerSection, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" requirePermission="false" allowDefinition="MachineToApplication"/>
    <sectionGroup name="webServices" type="System.Web.Configuration.ScriptingWebServicesSectionGroup, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35">
      <section name="jsonSerialization" type="System.Web.Configuration.ScriptingJsonSerializationSection, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" requirePermission="false" allowDefinition="Everywhere"/>
      <section name="profileService" type="System.Web.Configuration.ScriptingProfileServiceSection, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" requirePermission="false" allowDefinition="MachineToApplication"/>
      <section name="authenticationService" type="System.Web.Configuration.ScriptingAuthenticationServiceSection, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" requirePermission="false" allowDefinition="MachineToApplication"/>
      <section name="roleService" type="System.Web.Configuration.ScriptingRoleServiceSection, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" requirePermission="false" allowDefinition="MachineToApplication"/>
    </sectionGroup>
  </sectionGroup>
</sectionGroup>
</configSections>
<connectionStrings>
  <add name="DBCS" connectionString="data source=.; database=xxx; integrated    security=SSPI" providerName="System.Data.SqlClient" />
 </connectionStrings>


 <system.web>
   <compilation debug="true" targetFramework="4.5" />
    <authentication mode="Forms">
    <forms loginUrl="SelectUser.aspx" defaultUrl="SelectUser.aspx" />
    </authentication>
    <authorization>
    <deny users="?" />
   </authorization>
    <membership>
     <providers>
       <clear />
       <add name="AspNetSqlMembershipProvider"    type="System.Web.Security.SqlMembershipProvider" connectionStringName="ApplicationServices" enablePasswordRetrieval="false" enablePasswordReset="true" requiresQuestionAndAnswer="false" requiresUniqueEmail="false" maxInvalidPasswordAttempts="5" minRequiredPasswordLength="6" minRequiredNonalphanumericCharacters="0" passwordAttemptWindow="10" applicationName="/" />
    </providers>
   </membership>
   <profile>
    <providers>
    <clear />
     <add name="AspNetSqlProfileProvider"   type="System.Web.Profile.SqlProfileProvider" connectionStringName="ApplicationServices" applicationName="/" />
  </providers>
  </profile>
  <roleManager enabled="false">
    <providers>
     <clear />
      <add name="AspNetSqlRoleProvider"   type="System.Web.Security.SqlRoleProvider" connectionStringName="ApplicationServices" applicationName="/" />
    <add name="AspNetWindowsTokenRoleProvider" type="System.Web.Security.WindowsTokenRoleProvider" applicationName="/" />
  </providers>
</roleManager>
  <pages controlRenderingCompatibilityVersion="3.5" clientIDMode="AutoID"><controls>
      <add tagPrefix="ajaxToolkit" assembly="AjaxControlToolkit" namespace="AjaxControlToolkit" />
     <add tagPrefix="asp" namespace="System.Web.UI.WebControls" assembly="System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35"/>
    </controls></pages>
  </system.web>
     <system.webServer>
        <modules runAllManagedModulesForAllRequests="true" />
       </system.webServer>
        <assemblies>

       <add assembly="System.Data.Linq, Version=4.0.0.0, Culture=neutral,      PublicKeyToken=B77A5C561934E089"/>

       <add assembly="System.Design, Version=4.0.0.0, Culture=neutral, PublicKeyToken=B03F5F7F11D50A3A"/>

         <add assembly="System.Web.Extensions.Design, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35"/>

      <add assembly="System.Windows.Forms, Version=4.0.0.0, Culture=neutral, PublicKeyToken=B77A5C561934E089"/>
     </assemblies>
      <runtime>
        <assemblyBinding xmlns="urn:schemas-microsoft-com:asm.v1">
        <dependentAssembly>
         <assemblyIdentity name="Microsoft.Owin"        publicKeyToken="31bf3856ad364e35" culture="neutral" />
    <bindingRedirect oldVersion="0.0.0.0-3.0.0.0" newVersion="3.0.0.0" />
    </dependentAssembly>
   <dependentAssembly>
     <assemblyIdentity name="Microsoft.Owin.Security" publicKeyToken="31bf3856ad364e35" culture="neutral" />
    <bindingRedirect oldVersion="0.0.0.0-3.0.0.0" newVersion="3.0.0.0" />
     </dependentAssembly>
       <dependentAssembly>
      <assemblyIdentity name="Microsoft.WindowsAzure.Storage" publicKeyToken="31bf3856ad364e35" culture="neutral" />
      <bindingRedirect oldVersion="0.0.0.0-2.1.0.4" newVersion="2.1.0.4" />
    </dependentAssembly>
    <dependentAssembly>
    <assemblyIdentity name="HtmlAgilityPack" publicKeyToken="bd319b19eaf3b43a" culture="neutral" />
     <bindingRedirect oldVersion="0.0.0.0-1.4.9.0" newVersion="1.4.9.0" />
     </dependentAssembly>
    </assemblyBinding>
        </runtime>
   </configuration>
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我已经躲开了这个错误,但我不能.请帮忙.谢谢!

SHI*_*ANA 1

它存在于命名空间System.Web.UI.WebControls中；

但为了使用它，您必须安装 AJAX 工具包。

在使用 AJAX 工具包中的控件之前，您必须重新注册工具包脚本管理器。

<%@ Register assembly="AjaxControlToolkit" namespace="AjaxControlToolkit" tagprefix="asp" %>
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你还可以再做一件事。

1.从工具箱中删除“Ajax 控制”选项卡。

2.重新添加选项卡并右键单击该选项卡，选择“选择项目”并浏览到您自己项目中的 AjaxControltoolkit.dll 文件，然后按“确定”（确保您使用的 ajax 工具包版本与 C# 版本相同）版本）。

3.清理并重建解决方案，然后就可以开始了。

将这些程序集添加到您的 web.config 中

    <assemblies>

            <add assembly="System.Data.Linq, Version=4.0.0.0, Culture=neutral, PublicKeyToken=B77A5C561934E089"/>

            <add assembly="System.Design, Version=4.0.0.0, Culture=neutral, PublicKeyToken=B03F5F7F11D50A3A"/>

            <add assembly="System.Web.Extensions.Design, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35"/>

            <add assembly="System.Windows.Forms, Version=4.0.0.0, Culture=neutral, PublicKeyToken=B77A5C561934E089"/>

</assemblies>
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并将 tagfix 更改为 asp 而不是 ajaxToolkit。

我想这会对你有帮助。

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