How to get the assembly file version in C#

Here is a sample code to get assembly file version in C#.

System.Reflection.Assembly assembly = System.Reflection.Assembly.GetExecutingAssembly();
System.Diagnostics.FileVersionInfo fvi = System.Diagnostics.FileVersionInfo.GetVersionInfo(assembly.Location);
string version = fvi.FileVersion;

Another approach is,

var version = Application.ProductVersion;

This approach requires reference to below namespace.

System.Windows.Forms