[英]How to detect whether “.Net Framework 4.6.1 Hotfix” is installed on System or not using C# Code?
有時人們安裝 .net 框架 4.6.1 並且我的應用程序無法在他們的環境中正常工作,除非他們還安裝了 .Net Framework 4.6.1 修補程序。 所以我必須在每個客戶的機器上明確地解決這個問題。 並且還要編寫一個程序來執行此檢查以幫助支持人員。
這是在客戶端計算機上檢測客戶端計算機上是否安裝了 4.6.1 或更高版本但缺少檢查 4.6.1 修補程序的示例代碼。 注意:64 位操作系統是先決條件。
private static bool CheckIfVCInstalledOrNot()
{
bool vcInstalled = true;
try
{
if (!Utilities.RedistributablePackage.IsInstalled(Utilities.RedistributablePackageVersion.VC2015to2019x64))
{
if (!Utilities.RedistributablePackage.IsInstalled(Utilities.RedistributablePackageVersion.VC2017x64))
{
if (!Utilities.RedistributablePackage.IsInstalled(Utilities.RedistributablePackageVersion.VC2015x64))
{
if (!Utilities.RedistributablePackage.IsInstalled(Utilities.RedistributablePackageVersion.VC2013x64))
{
vcInstalled = false;
}
}
}
}
}
catch (Exception ex)
{
Utilities.Logging.ErrorLog(ex);
}
return vcInstalled;
}
public enum RedistributablePackageVersion
{
VC2013x64,
VC2015x64,
VC2017x64,
VC2015to2019x64
};
public static class RedistributablePackage
{
/// <summary>
/// Check if a Microsoft Redistributable Package is installed.
/// </summary>
/// <param name="redistributableVersion">The package version to detect.</param>
/// <returns><c>true</c> if the package is installed, otherwise <c>false</c></returns>
public static bool IsInstalled(RedistributablePackageVersion redistributableVersion)
{
try
{
switch (redistributableVersion)
{
case RedistributablePackageVersion.VC2015to2019x64:
var parametersVc2015to2019x64 = Registry.LocalMachine.OpenSubKey(@"SOFTWARE\Microsoft\DevDiv\VC\Servicing\14.0\RuntimeMinimum", false);
if (parametersVc2015to2019x64 == null) return false;
var vc2015to2019x64Version = parametersVc2015to2019x64.GetValue("Version");
if (((string)vc2015to2019x64Version).StartsWith("14"))
{
return true;
}
break;
case RedistributablePackageVersion.VC2017x64:
var paths2017x64 = new List<string>
{
@"Installer\Dependencies\,,amd64,14.0,bundle",
@"Installer\Dependencies\VC,redist.x64,amd64,14.16,bundle" //changed in 14.16.x
};
foreach (var path in paths2017x64)
{
var parametersVc2017x64 = Registry.ClassesRoot.OpenSubKey(path, false);
if (parametersVc2017x64 == null) continue;
var vc2017x64Version = parametersVc2017x64.GetValue("Version");
if (vc2017x64Version == null) return false;
if (((string)vc2017x64Version).StartsWith("14"))
{
return true;
}
}
break;
case RedistributablePackageVersion.VC2015x64:
var parametersVc2015x64 = Registry.LocalMachine.OpenSubKey(@"SOFTWARE\Classes\Installer\Dependencies\{d992c12e-cab2-426f-bde3-fb8c53950b0d}", false);
if (parametersVc2015x64 == null) return false;
var vc2015x64Version = parametersVc2015x64.GetValue("Version");
if (((string)vc2015x64Version).StartsWith("14"))
{
return true;
}
break;
case RedistributablePackageVersion.VC2013x64:
var parametersVc2013x64 = Registry.LocalMachine.OpenSubKey(@"SOFTWARE\Classes\Installer\Dependencies\{050d4fc8-5d48-4b8f-8972-47c82c46020f}", false);
if (parametersVc2013x64 == null) return false;
var vc2013x64Version = parametersVc2013x64.GetValue("Version");
if (((string)vc2013x64Version).StartsWith("12"))
{
return true;
}
break;
}
return false;
}
catch (Exception)
{
return false;
}
}
}
您需要找到修補程序的注冊表 DWORD 值並在注冊表中查詢該值。
現在,如果您需要修補程序 3154529 ,您可以看到注冊表值為“394297”。
因此,您可以從該表中看到 .net 框架 4.6.1 的值大於或等於 393295,而帶有修補程序的 4.6.1 應為 394297 或更大(應用了更新的修補程序或服務包)。
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