C# Signature:

[DllImport("setupapi.dll", CharSet = CharSet.Auto, SetLastError = true)]
public static extern bool SetupFindNextLine(ref INFCONTEXT ContextIn, out INFCONTEXT ContextOut);

VB Signature:

Public Declare Auto Function SetupFindNextLine Lib "setupapi.dll" (ByRef ContextIn As INFCONTEXT, ByRef ContextOut As INFCONTEXT) As Boolean

User-Defined Types:

INFCONTEXT

Alternative Managed API:

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Notes:

Parameters

Return Value

If this function finds the next line, the return value is a nonzero value. Otherwise, the return value is zero. To get extended error information, call GetLastError.

Tips & Tricks:

If ContextIn.Line references multiple INF files that have been appended together using SetupOpenAppendInfFile, this function searches across the specified section in all files referenced by the HINF to locate the next line.

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

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