Here is a method to list all .Net versions installed on system in C#. I was surprised that I couldn't find single line solution for this. Of course, solution needs to work on lowest possible framework -this one requires .Net 2.0.
public static List GetDotNetVersionsInstalledFromRegistry()
{
List r = new List();
using (RegistryKey ndpKey = RegistryKey
.OpenRemoteBaseKey(RegistryHive.LocalMachine, string.Empty)
.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, ust be later
r.Add(versionKeyName + "," + name);
}
else
{
if (sp != "" && install == "1")
{
r.Add(versionKeyName + "," + name + ",SP" + sp);
}
}
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, ust be later
r.Add(versionKeyName + "," + name);
}
else
{
if (sp != "" && install == "1")
{
r.Add(versionKeyName + "," +
subKeyName + "," + name + ",SP" + sp);
}
else if (install == "1")
{
r.Add(versionKeyName + "," +
subKeyName + "," + name);
}
}
}
}
}
}
return r;
}
.
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