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The type or namespace Ifilter could not be found

Hello,

I am trying to compile this code in C# 1.1:

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

namespace DesktopSearch1.Parsing
{
/// <summary>
/// Summary description for Parser.
/// </summary>
public class Parser
{
public Parser()
{
}

[DllImport("query.dll", CharSet = CharSet.Unicode)]
private extern static int LoadIFilter(string pwcsPath, ref IUnknown pUnkOuter, ref IFilter ppIUnk);

..... the rest has been ommited

When i try to compile, it says that "the type or namespace 'IFilter' could not be found" -- does anyone know how to get rid of this error?

Thanks

dstanley9

Where is the defenition for IFilter? Is it in query.dll? Is query.dll a COM dll? If so, why are you using pinvoke?

alexthecodepoet

ASKER

IFilter microsoft .NET technology..
to be honest, i dont know where the definition is, that is what i was hoping to find out ;)

dstanley9

OK, found this function at pinvoke.net, which is a little different from yours:

[DllImport("query.dll", SetLastError=true, CharSet=CharSet.Unicode)]
static extern int LoadIFilter(string pwcsPath,
[MarshalAs(UnmanagedType.IUnknown)] object pUnkOuter,
ref IFilter ppIUnk);

IFilter is a COM intefacce, so you may have to define it yourself. Here's some source that I found:

http://dotlucene.net/documentation/MicrosoftOfficeDocumentsP.html

alexthecodepoet

ASKER

when i do that, and then try to compile, i get this error that says 'receieved a namespace instead of a class' ... or something..

i copied the code from the dotlucene page, put it into IFilter.cs, compiled it, and then referenced that dll file from Parser.cs (and i get the error above)

dstanley9

Well, the jerk names the namespace the same as the interface. For clarity, change the namespace in ifilter.cs to IFilterInterop and add

using IFilterInterop

to Parser.cs

alexthecodepoet

ASKER

are you going to be here for a few more minutes? There are little bugs popping up that i am trying to fix

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dstanley9

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alexthecodepoet

ASKER

if we can fix this, give me your address, and i might send you 99 trillion dollars (thats how happy i would be)

I now get this one and only error:

the type or namespace name 'constants' could not be found (are you missing a using directive or an assembly reference?)

alexthecodepoet

ASKER

i ended up using a different IFilter.cs file, and now it works.

thanks for all of the help