truncate file path

Import namespaces

using System.Runtime.InteropServices;
using System.Text;

Win API

[DllImport("shlwapi.dll", CharSet = CharSet.Auto)]
static extern bool PathCompactPathEx([Out] StringBuilder pszOut, string szPath, int cchMax, int dwFlags);

Use

string path = @"C:\WINDOWS\Microsoft.NET\Framework\v3.5\Microsoft .NET Framework 3.5 SP1\test.dll";

StringBuilder sb = new StringBuilder();
int length = 40;

// truncate path
PathCompactPathEx(sb, path, length, 0);

Console.WriteLine(sb);

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