pinvoke.net: Edit: msi.MsiGetFileHash

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Summary: Takes the path to a file and returns a 128-bit hash of that file, which is needed to populate the MsiFileHash@msdn table.

!!!!C# Signature:
 [DllImport("msi.dll", CharSet=CharSet.Unicode)]
 static extern int MsiGetFileHash(string szFilePath, int dwOptions, 
   ref MSIFILEHASHINFO pHash);
!!!!User-Defined Types:
[MSIFILEHASHINFO]

!!!!Notes:
None.

!!!!Tips & Tricks:
Please add some!

!!!!Sample Code:
Please add some!

StructLayout(LayoutKind.Sequential)]
    struct MSIFILEHASHINFO
    {
        public int dwFileHashInfoSize;
        public int dwData0;
        public int dwData1;
        public int dwData2;
        public int dwData3;
    }

class Program
    {

[DllImport("msi.dll", CharSet = CharSet.Unicode)]
        static extern int MsiGetFileHash(string szFilePath, int dwOptions,
           ref MSIFILEHASHINFO pHash);

static void Main(string[] args)
        {
	    // Set the dwFileHashInfoSize to 20 i.e. 5*4
            MSIFILEHASHINFO msifilehashinfo = new MSIFILEHASHINFO { dwFileHashInfoSize = 20 };

int results = MsiGetFileHash(
                @"c:\code\myfile.file",
                0,
                ref msifilehashinfo);
        }
    }

!!!!Alternative Managed API:
MSI interop library

http://sourceforge.net/project/showfiles.php?group_id=40188&package_id=110212

Documentation: MsiGetFileHash@msdn on MSDN