To check the .NET version of a DLL file, you can use several methods ranging from simple Windows File Explorer checks to command-line tools. Method 1: Windows File Explorer (Simplest)
$path = "C:\path\to\your.dll" [Reflection.Assembly]::ReflectionOnlyLoadFrom($path).CustomAttributes | Where-Object $_.AttributeType.Name -eq "TargetFrameworkAttribute" | Select-Object -ExpandProperty ConstructorArguments | Select-Object -ExpandProperty value Use code with caution.
Open the Developer Command Prompt , run ildasm yourfile.dll , and double-click Manifest . Look for the .custom instance void [mscorlib]System.Runtime.Versioning.TargetFrameworkAttribute entry.
Run the following command (replace C:\path\to\your.dll with your actual file path): powershell
For many .NET Framework DLLs, the version is visible in the file properties. Right-click the file and select Properties . Go to the Details tab.
This will return a string like .NETFramework,Version=v4.7.2 or .NETCoreApp,Version=v8.0 . Method 3: Developer Tools
If you have Visual Studio installed, you can use specialized disassemblers to inspect metadata:
