C# Signature:

[DllImport("setupapi.dll", CharSet = CharSet.Auto, SetLastError = true)]
public static extern void SetupCloseInfFile(IntPtr InfHandle);

VB Signature:

Public Declare Auto Sub SetupCloseInfFile Lib "setupapi.dll" (ByVal InfHandle As IntPtr)

User-Defined Types:

None.

Alternative Managed API:

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Notes:

Parameters

Tips & Tricks:

None.

Sample Code:

C#

string infFile = <INF file full path>;
uint ErrorLine = 0;
IntPtr infHandle = SetupOpenInfFile(infFile, null, INF_STYLE_OLDNT | INF_STYLE_WIN4, out ErrorLine);
int iCode = Marshal.GetLastWin32Error();
if (infHandle.ToInt64() != INVALID_HANDLE_VALUE)
{
     Console.WriteLine("INF file was opened successfully.");
     INFCONTEXT Context = new INFCONTEXT();
     if (SetupFindFirstLine(infHandle, "Manufacturer", null, ref Context) == true)
     {
        Console.WriteLine("Manufacturers list:");
        string manufacturerName = "";
        manufacturerName = manufacturerName.PadLeft(256, ' ');
        Int32 requiredSize = manufacturerName.Length;
        SetupGetStringField(ref Context, 1, manufacturerName, manufacturerName.Length, out requiredSize);
        manufacturerName = manufacturerName.Substring(0, requiredSize-1);
        Console.WriteLine(manufacturerName);
        while(SetupFindNextLine(ref Context, out Context) == true)
        {
            manufacturerName = manufacturerName.PadLeft(256, ' ');
            requiredSize = manufacturerName.Length;
            SetupGetStringField(ref Context, 1, manufacturerName, manufacturerName.Length, out requiredSize);
            manufacturerName = manufacturerName.Substring(0, requiredSize - 1);
            Console.WriteLine(manufacturerName);
        }
     }
     else
     {
        Console.WriteLine("Can't find [Manufacturer] section.");
     }
     SetupCloseInfFile(infHandle);
}
else
{
     Console.WriteLine("Failed to open INF file. Error code - {0}.", iCode);
     if (ErrorLine != 0)
     {
        Console.WriteLine("Failure line - {0}.", ErrorLine);
     }
}

VB

Dim infFile As String = <INF file full path>
Dim ErrorLine As UInt32 = 0
Dim infHandle As IntPtr = SetupOpenInfFile(infFile, Nothing, INF_STYLE_OLDNT Or INF_STYLE_WIN4, ErrorLine)
Dim iCode As Integer = Marshal.GetLastWin32Error()
If infHandle.ToInt64() <> INVALID_HANDLE_VALUE Then
    Console.WriteLine("INF file was opened successfully.")
    Dim Context As INFCONTEXT = New INFCONTEXT()
    If SetupFindFirstLine(infHandle, "Manufacturer", Nothing, Context) = True Then
        Console.WriteLine("Manufacturers list:")
        Dim manufacturerName As String = ""
        manufacturerName = manufacturerName.PadLeft(256, " "c)
        Dim requiredSize As Int32 = manufacturerName.Length
        SetupGetStringField(Context, 1, manufacturerName, manufacturerName.Length, requiredSize)
        manufacturerName = manufacturerName.Substring(0, requiredSize - 1)
        Console.WriteLine(manufacturerName)
        While SetupFindNextLine(Context, Context) = True
            manufacturerName = manufacturerName.PadLeft(256, " "c)
            requiredSize = manufacturerName.Length
            SetupGetStringField(Context, 1, manufacturerName, manufacturerName.Length, requiredSize)
            manufacturerName = manufacturerName.Substring(0, requiredSize - 1)
            Console.WriteLine(manufacturerName)
        End While
    Else
        Console.WriteLine("Can't find [Manufacturer] section.")
    End If
    SetupCloseInfFile(infHandle)
Else
    Console.WriteLine("Failed to open INF file. Error code - {0}.", iCode)
    If ErrorLine <> 0 Then
        Console.WriteLine("Failure line - {0}.", ErrorLine)
    End If
End If