C# Signature:

[DllImport("kernel32.dll", SetLastError=true)]
[PreserveSig]
public static extern uint GetModuleFileName
(
    [In]
    IntPtr hModule,

    [Out]
    StringBuilder lpFilename,

    [In]
    [MarshalAs(UnmanagedType.U4)]
    int nSize
);

VB.Net Signature:

<DllImport("kernel32.dll", SetLastError:=True)> <PreserveSig()> _
Public Function GetModuleFileName(<[In]()> ByVal hModule As IntPtr, <Out()> ByVal lpFilename As StringBuilder, <[In]()> <MarshalAs(UnmanagedType.U4)> ByVal nSize As Integer) As UInteger
End Function

User-Defined Types:

None.

Notes:

None.

Tips & Tricks:

If you want to use GetModuleFilename to retrieve the path the current executable was started from, you should instead consider using System.Windows.Forms.Application.StartupPath. This is a wrapper around GetModuleFilename, so it probably does exactly what you want.

Another way: Process.GetCurrentProcess().MainModule.FileName

If you want to use GetModuleFilename to retrieve the path the current executable was started from, you should instead consider using System.Windows.Forms.Application.StartupPath.

This is a wrapper around GetModuleFilename, so it probably does exactly what you want.

Sample Code:

using System;
using System.Text;
using System.Runtime.InteropServices;
using Library.Win32.Process;

namespace Test
{
    class Class1
    {
    [STAThread]
    static void Main(string[] args)
    {
        StringBuilder fileName = new StringBuilder(255);
        DllFuntions.GetModuleFileName(IntPtr.Zero, fileName, fileName.Capacity);
        Console.WriteLine(fileName);
     }
     }
}

Alternative Managed API:

System.Diagnostics.ProcessModule.FileName or System.Reflection.Module.FullyQualifiedName.

Please edit this page!

Do you have...

• helpful tips or sample code to share for using this API in managed code?
• corrections to the existing content?
• variations of the signature you want to share?
• additional languages you want to include?

Select "Edit This Page" on the right hand toolbar and edit it! Or add new pages containing supporting types needed for this API (structures, delegates, and more).