ClickOnce部署自动更新不起作用

我正在使用ClickOnce部署来检查更新：

1. 我已经完成了发布选项卡中的设置，发布URL，检查更新路径，以及在应用程序启动和脱机和联机运行应用程序之前检查更新
2. 如果从本地系统安装应用程序，我会得到更新，但如果从服务器安装应用程序则不会检查更新

下面是我用来检查更新的代码。如何更正此问题？

private void InstallUpdateSyncWithInfo()
{
    UpdateCheckInfo info = null;
    if (ApplicationDeployment.IsNetworkDeployed)
    {
        ApplicationDeployment ad = ApplicationDeployment.CurrentDeployment;
        try
        {
            info = ad.CheckForDetailedUpdate();
        }
        catch (DeploymentDownloadException dde)
        {
            MessageBox.Show("The new version of the application cannot be downloaded at this time. 'n'nPlease check your network connection, or try again later. Error: " + dde.Message);
            return;
        }
        catch (InvalidDeploymentException ide)
        {
            MessageBox.Show("Cannot check for a new version of the application. The ClickOnce deployment is corrupt. Please redeploy the application and try again. Error: " + ide.Message);
            return;
        }
        catch (InvalidOperationException ioe)
        {
            MessageBox.Show("This application cannot be updated. It is likely not a ClickOnce application. Error: " + ioe.Message);
            return;
        }
        if (info.UpdateAvailable)
        {
            Boolean doUpdate = true;
            if (!info.IsUpdateRequired)
            {
                DialogResult dr = MessageBox.Show("An update is available. Would you like to update the application now?", "Update Available", MessageBoxButtons.OKCancel);
                if (!(DialogResult.OK == dr))
                {
                    doUpdate = false;
                }
            }
            else
            {
                // Display a message that the app MUST reboot. Display the minimum required version.
                MessageBox.Show("This application has detected a mandatory update from your current " +
                    "version to version " + info.MinimumRequiredVersion.ToString() +
                    ". The application will now install the update and restart.",
                    "Update Available", MessageBoxButtons.OK,
                    MessageBoxIcon.Information);
            }
            if (doUpdate)
            {
                try
                {
                    ad.Update();
                    MessageBox.Show("The application has been upgraded, and will now restart.");
                    Application.Restart();
                }
                catch (DeploymentDownloadException dde)
                {
                    MessageBox.Show("Cannot install the latest version of the application. 'n'nPlease check your network connection, or try again later. Error: " + dde);
                    return;
                }
            }
        }
    }
    else
    {
        MessageBox.Show("There are no updates available");
    }
}

C#项目文本文件：

<?xml version="1.0" encoding="utf-8"?>
<Project ToolsVersion="4.0" DefaultTargets="Build"
    xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
    <PropertyGroup>
        <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
        <Platform Condition=" '$(Platform)' == '' ">x86</Platform>
        <ProductVersion>8.0.30703</ProductVersion>
        <SchemaVersion>2.0</SchemaVersion>
        <ProjectGuid>{1804771A-88C8-49AD-9763-44A296B7EC2B}</ProjectGuid>
        <OutputType>WinExe</OutputType>
        <AppDesignerFolder>Properties</AppDesignerFolder>
        <RootNamespace>TestUpdate</RootNamespace>
        <AssemblyName>TestUpdate</AssemblyName>
        <TargetFrameworkVersion>v3.5</TargetFrameworkVersion>
        <TargetFrameworkProfile>Client</TargetFrameworkProfile>
        <FileAlignment>512</FileAlignment>
        <IsWebBootstrapper>true</IsWebBootstrapper>
        <PublishUrl>C:'Program Files %28x86%29'Zend'Apache2'htdocs'TestUpdate'</PublishUrl>
        <Install>true</Install>
        <InstallFrom>Web</InstallFrom>
        <UpdateEnabled>true</UpdateEnabled>
        <UpdateMode>Foreground</UpdateMode>
        <UpdateInterval>7</UpdateInterval>
        <UpdateIntervalUnits>Days</UpdateIntervalUnits>
        <UpdatePeriodically>false</UpdatePeriodically>
        <UpdateRequired>true</UpdateRequired>
        <MapFileExtensions>true</MapFileExtensions>
        <InstallUrl>http://www.acharis.com/Clinic/TestUpdate/</InstallUrl>
        <UpdateUrl>http://www.acharis.com/Clinic/TestUpdate/</UpdateUrl>
        <ProductName>Test UPdate</ProductName>
        <PublisherName>Acharis</PublisherName>
        <SuiteName>www.acharis.com</SuiteName>
        <MinimumRequiredVersion>1.0.0.10</MinimumRequiredVersion>
        <CreateWebPageOnPublish>true</CreateWebPageOnPublish>
        <WebPage>test.html</WebPage>
        <ApplicationRevision>11</ApplicationRevision>
        <ApplicationVersion>1.0.0.%2a</ApplicationVersion>
        <UseApplicationTrust>true</UseApplicationTrust>
        <CreateDesktopShortcut>true</CreateDesktopShortcut>
        <PublishWizardCompleted>true</PublishWizardCompleted>
        <BootstrapperEnabled>true</BootstrapperEnabled>
    </PropertyGroup>
    <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|x86' ">
        <PlatformTarget>x86</PlatformTarget>
        <DebugSymbols>true</DebugSymbols>
        <DebugType>full</DebugType>
        <Optimize>false</Optimize>
        <OutputPath>bin'Debug'</OutputPath>
        <DefineConstants>DEBUG;TRACE</DefineConstants>
        <ErrorReport>prompt</ErrorReport>
        <WarningLevel>4</WarningLevel>
    </PropertyGroup>
    <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|x86' ">
        <PlatformTarget>x86</PlatformTarget>
        <DebugType>pdbonly</DebugType>
        <Optimize>true</Optimize>
        <OutputPath>bin'Release'</OutputPath>
        <DefineConstants>TRACE</DefineConstants>
        <ErrorReport>prompt</ErrorReport>
        <WarningLevel>4</WarningLevel>
    </PropertyGroup>
    <PropertyGroup>
        <ManifestCertificateThumbprint>B3D4C4433FA2AC368ACF13B0917D1CFEADFDF92A
        </ManifestCertificateThumbprint>
    </PropertyGroup>
    <PropertyGroup>
        <ManifestKeyFile>TestUpdate_TemporaryKey.pfx</ManifestKeyFile>
    </PropertyGroup>
    <PropertyGroup>
        <GenerateManifests>true</GenerateManifests>
    </PropertyGroup>
    <PropertyGroup>
        <SignManifests>true</SignManifests>
    </PropertyGroup>
    <ItemGroup>
       <Reference Include="System" />
       <Reference Include="System.Core" />
       <Reference Include="System.Xml.Linq" />
       <Reference Include="System.Data.DataSetExtensions" />
       <Reference Include="Microsoft.CSharp" />
       <Reference Include="System.Data" />
       <Reference Include="System.Deployment" />
       <Reference Include="System.Drawing" />
       <Reference Include="System.Windows.Forms" />
       <Reference Include="System.Xml" />
    </ItemGroup>
    <ItemGroup>
        <Compile Include="Form1.cs">
            <SubType>Form</SubType>
        </Compile>
        <Compile Include="Form1.Designer.cs">
            <DependentUpon>Form1.cs</DependentUpon>
        </Compile>
        <Compile Include="Program.cs" />
        <Compile Include="Properties'AssemblyInfo.cs" />
        <EmbeddedResource Include="Form1.resx">
            <DependentUpon>Form1.cs</DependentUpon>
        </EmbeddedResource>
        <EmbeddedResource Include="Properties'Resources.resx">
            <Generator>ResXFileCodeGenerator</Generator>
            <LastGenOutput>Resources.Designer.cs</LastGenOutput>
            <SubType>Designer</SubType>
        </EmbeddedResource>
        <Compile Include="Properties'Resources.Designer.cs">
            <AutoGen>True</AutoGen>
            <DependentUpon>Resources.resx</DependentUpon>
            <DesignTime>True</DesignTime>
        </Compile>
        <None Include="app.config" />
        <None Include="Properties'Settings.settings">
            <Generator>SettingsSingleFileGenerator</Generator>
            <LastGenOutput>Settings.Designer.cs</LastGenOutput>
        </None>
        <Compile Include="Properties'Settings.Designer.cs">
            <AutoGen>True</AutoGen>
            <DependentUpon>Settings.settings</DependentUpon>
            <DesignTimeSharedInput>True</DesignTimeSharedInput>
        </Compile>
        <None Include="TestUpdate_TemporaryKey.pfx" />
    </ItemGroup>
    <ItemGroup>
        <BootstrapperPackage Include="Microsoft.Net.Client.3.5">
            <Visible>False</Visible>
            <ProductName>.NET Framework 3.5 SP1 Client Profile</ProductName>
            <Install>true</Install>
        </BootstrapperPackage>
        <BootstrapperPackage Include="Microsoft.Net.Framework.3.5.SP1">
            <Visible>False</Visible>
            <ProductName>.NET Framework 3.5 SP1</ProductName>
            <Install>false</Install>
        </BootstrapperPackage>
        <BootstrapperPackage Include="Microsoft.Windows.Installer.3.1">
            <Visible>False</Visible>
            <ProductName>Windows Installer 3.1</ProductName>
            <Install>true</Install>
        </BootstrapperPackage>
    </ItemGroup>
    <Import Project="$(MSBuildToolsPath)'Microsoft.CSharp.targets" />
    <!-- To modify your build process, add your task inside one of the targets below and
       Other similar extension points exist, see Microsoft.Common.targets.
    <Target Name="BeforeBuild">
    </Target>
    <Target Name="AfterBuild">
    </Target>
    -->
</Project>

private bool CheckForUpdateAvailable()
{
    Uri updateLocation = ApplicationDeployment.CurrentDeployment.UpdateLocation;
    //Used to use the Clickonce API but we've uncovered a pretty serious bug which results in a COMException and the loss of ability
    //to check for updates. So until this is fixed, we're resorting to a very lo-fi way of checking for an update.
    WebClient webClient = new WebClient();
    webClient.Encoding = Encoding.UTF8;
    string manifestFile = webClient.DownloadString(updateLocation);
    //We have some garbage info from the file header, presumably because the file is a .application and not .xml
    //Just start from the start of the first tag
    int startOfXml = manifestFile.IndexOfAny(new[] { '<' });
    manifestFile = manifestFile.Substring(startOfXml);
    Version version;
    XmlDocument doc = new XmlDocument();
    //build the xml from the manifest
    doc.LoadXml(manifestFile);
    XmlNodeList nodesList = doc.GetElementsByTagName("assemblyIdentity");
    if (nodesList == null || nodesList.Count <= 0)
    {
        throw new XmlException("Could not read the xml manifest file, which is required to check if an update is available.");
    }
    XmlNode theNode = nodesList[0];
    version = new Version(theNode.Attributes["version"].Value);
    if (version > ApplicationDeployment.CurrentDeployment.CurrentVersion)
    {
        // update application
        return true;
    }
    return false;
}

if (ApplicationDeployment.IsNetworkDeployed)
{
    bool updateIsAvailable;
    try
    {
        updateIsAvailable = CheckForUpdateAvailable();
    }
    catch
    {
        //not network deployed etc...
    }
    if (updateIsAvailable)
    {
        ad = ApplicationDeployment.CurrentDeployment;
        if (ad == null)
        {
            return;
        }
        ad.Update();
        Application.Restart();
    }
}