我的实际问题是,我遇到了两个版本的.NET 4.5完整设置:
50,349,920
a5e81d1b3905ada0a6e35fd6c6a2e1f4
今天上午从这里下载了一个(可能)更新的
50,352,408
d02dc8b69a702a47c083278938c4d2f1
这两种设置的版本都是4.5.50709.17929
。在内部,主要的区别是netfx_Full.mzz
文件,但在用7-zip解压内容后,我最终得到了许多相同版本的文件,即使文件内容不同(我从大约426个文件中随机检查了大约20个文件),所以我真的分不清哪个是较新的。
有没有一种方法可以可靠地检测已安装的.NET 4.5运行时的实际版本,以便只有在确实需要时才能运行安装程序?
更新
我已经检查了所有426个内容不同的文件,它们在两个设置中都具有相同的ProductVersion和FileVersion。因此,注册表或文件校验和是下一步。
更新2
注册表中列出的两个设置的版本是相同的:4.5.50709
更新3
.NET 4.5.2现已推出:
此版本的.NET框架与.NET框架3.5 SP1及更早版本并行运行,但对.NET框架4、.NET框架4.5和.NET框架4.5.1执行就地更新。
发布于 2012-10-19 18:38:28
MS最近为.NET 4.5打了补丁,以在某些情况下恢复与.NET 4.0的向后兼容性(请参阅http://blogs.msdn.com/b/dotnet/archive/2012/10/17/net-framework-4-5-off-to-a-great-start.aspx)。
有可能是微软更新了安装程序的这些更改(这样升级到.NET 4.5的用户就不会遇到麻烦),尽管我不知道他们为什么不更改安装程序的版本号。
另外,请注意System.Environment.Version
报告的.NET版本号和运行时版本号之间存在差异。后者仍然是4.0.30319。*对于.NET 4.5,只有修订版号更改(随着.NET 4.5更新,以及每个安全更新)。
以下是一些在野外观察到的运行时版本的示例:
Base 4.0
4.5
4.5.1
Windows 7上的
上使用MS14-009安全性update)
4.5.2
4.6及更高版本的
我在Windows Update历史记录中没有看到任何.NET更新,所以我猜v18010的更新是作为KB 2756872的一部分安装的。
更新:显然微软更新了.NET 4.5设置,因为原始下载中的数字签名有错误。KB 2770445。
发布于 2015-12-05 16:29:19
public class DA {
public static class VersionNetFramework {
public static string Get45or451FromRegistry()
{//https://msdn.microsoft.com/en-us/library/hh925568(v=vs.110).aspx
using (RegistryKey ndpKey = RegistryKey.OpenBaseKey(RegistryHive.LocalMachine, RegistryView.Registry32).OpenSubKey("SOFTWARE\\Microsoft\\NET Framework Setup\\NDP\\v4\\Full\\"))
{
int releaseKey = Convert.ToInt32(ndpKey.GetValue("Release"));
if (true)
{
return (@"Version: " + CheckFor45DotVersion(releaseKey));
}
}
}
// Checking the version using >= will enable forward compatibility,
// however you should always compile your code on newer versions of
// the framework to ensure your app works the same.
private static string CheckFor45DotVersion(int releaseKey)
{//https://msdn.microsoft.com/en-us/library/hh925568(v=vs.110).aspx
if (releaseKey >= 394271)
return "4.6.1 installed on all other Windows OS versions or later";
if (releaseKey >= 394254)
return "4.6.1 installed on Windows 10 or later";
if (releaseKey >= 393297)
return "4.6 installed on all other Windows OS versions or later";
if (releaseKey >= 393295)
return "4.6 installed with Windows 10 or later";
if (releaseKey >= 379893)
return "4.5.2 or later";
if (releaseKey >= 378758)
return "4.5.1 installed on Windows 8, Windows 7 SP1, or Windows Vista SP2 or later";
if (releaseKey >= 378675)
return "4.5.1 installed with Windows 8.1 or later";
if (releaseKey >= 378389)
return "4.5 or later";
return "No 4.5 or later version detected";
}
public static string GetVersionFromRegistry()
{//https://msdn.microsoft.com/en-us/library/hh925568(v=vs.110).aspx
string res = @"";
// Opens the registry key for the .NET Framework entry.
using (RegistryKey ndpKey =
RegistryKey.OpenRemoteBaseKey(RegistryHive.LocalMachine, "").
OpenSubKey(@"SOFTWARE\Microsoft\NET Framework Setup\NDP\"))
{
// As an alternative, if you know the computers you will query are running .NET Framework 4.5
// or later, you can use:
// using (RegistryKey ndpKey = RegistryKey.OpenBaseKey(RegistryHive.LocalMachine,
// RegistryView.Registry32).OpenSubKey(@"SOFTWARE\Microsoft\NET Framework Setup\NDP\"))
foreach (string versionKeyName in ndpKey.GetSubKeyNames())
{
if (versionKeyName.StartsWith("v"))
{
RegistryKey versionKey = ndpKey.OpenSubKey(versionKeyName);
string name = (string)versionKey.GetValue("Version", "");
string sp = versionKey.GetValue("SP", "").ToString();
string install = versionKey.GetValue("Install", "").ToString();
if (install == "") //no install info, must be later.
res += (versionKeyName + " " + name) + Environment.NewLine;
else
{
if (sp != "" && install == "1")
{
res += (versionKeyName + " " + name + " SP" + sp) + Environment.NewLine;
}
}
if (name != "")
{
continue;
}
foreach (string subKeyName in versionKey.GetSubKeyNames())
{
RegistryKey subKey = versionKey.OpenSubKey(subKeyName);
name = (string)subKey.GetValue("Version", "");
if (name != "")
sp = subKey.GetValue("SP", "").ToString();
install = subKey.GetValue("Install", "").ToString();
if (install == "") //no install info, must be later.
res += (versionKeyName + " " + name) + Environment.NewLine;
else
{
if (sp != "" && install == "1")
{
res += (" " + subKeyName + " " + name + " SP" + sp) + Environment.NewLine;
}
else if (install == "1")
{
res += (" " + subKeyName + " " + name) + Environment.NewLine;
}
}
}
}
}
}
return res;
}
public static string GetUpdateHistory()
{//https://msdn.microsoft.com/en-us/library/hh925567(v=vs.110).aspx
string res=@"";
using (RegistryKey baseKey = RegistryKey.OpenBaseKey(RegistryHive.LocalMachine, RegistryView.Registry32).OpenSubKey(@"SOFTWARE\Microsoft\Updates"))
{
foreach (string baseKeyName in baseKey.GetSubKeyNames())
{
if (baseKeyName.Contains(".NET Framework") || baseKeyName.StartsWith("KB") || baseKeyName.Contains(".NETFramework"))
{
using (RegistryKey updateKey = baseKey.OpenSubKey(baseKeyName))
{
string name = (string)updateKey.GetValue("PackageName", "");
res += baseKeyName + " " + name + Environment.NewLine;
foreach (string kbKeyName in updateKey.GetSubKeyNames())
{
using (RegistryKey kbKey = updateKey.OpenSubKey(kbKeyName))
{
name = (string)kbKey.GetValue("PackageName", "");
res += (" " + kbKeyName + " " + name) + Environment.NewLine;
if (kbKey.SubKeyCount > 0)
{
foreach (string sbKeyName in kbKey.GetSubKeyNames())
{
using (RegistryKey sbSubKey = kbKey.OpenSubKey(sbKeyName))
{
name = (string)sbSubKey.GetValue("PackageName", "");
if (name == "")
name = (string)sbSubKey.GetValue("Description", "");
res += (" " + sbKeyName + " " + name) + Environment.NewLine;
}
}
}
}
}
}
}
}
}
return res;
}
}
}
发布于 2017-12-17 16:55:27
如果有人需要在表格中排列的.net版本的System.Environment.Version
值(需要使用excel执行=Vlookup
等)
这是我为此创建的plunker。
输入上面的链接,您将能够复制此表映像:
https://stackoverflow.com/questions/12971881
复制相似问题