23.4.txt

《Microsoft Visual C# .NET 2003开发技巧大全》源代码

Listing 23.4 Searching for Types Using Custom Searching
using System;
using System.Reflection;
using System.IO;
using System.Collections;
namespace _8_CustomSearch
{
class Class1
{
[STAThread]
static int Main(string[] args)
{
if( args.Length <= 1 )
return ShowUsage();
ArrayList filterStrings = new ArrayList();
// copy search strings to an array
for( int i = 1; i < args.Length; i++ )
filterStrings.Add(args[i]);
// load assembly referenced in first cmd line arg
Assembly asm = Assembly.LoadFile( args[0] );
if( asm == null )
{
return ShowUsage();
}
// create the member filter delegate
MemberFilter filter = new MemberFilter( OnCustomSearch );
foreach( Module module in asm.GetModules() )
{
// enumerate through all types and search each member
foreach( Type t in module.GetTypes() )
{
// first check to see if the type name matches
if( filterStrings.Contains( t.Name ) )
Console.WriteLine( “Found type {0}”, t.Name );
MemberInfo[] foundMembers = t.FindMembers( MemberTypes.All,
BindingFlags.Public | BindingFlags.NonPublic |
BindingFlags.Static | BindingFlags.Instance |
BindingFlags.DeclaredOnly,
filter, filterStrings );
foreach( MemberInfo member in foundMembers )
{
Console.WriteLine( “Found member {0} which is a {1}” +
“ defined in {2}.”, member.Name, member.MemberType,
t.Name );
}
}
}
return 0;
}
public static bool OnCustomSearch( MemberInfo member, object filter )
{
// does the member name equal a string in the filter?
ArrayList al = (ArrayList) filter;
if( al.Contains( member.Name ))
return true;
// check the member type also
if( al.Contains( member.MemberType ))
return true;
return false;
}
static int ShowUsage()
{
Console.WriteLine( “asmgrep <assemblyname> <string 1 string 2” +
“ ... string n>\n” );
return -1;
}
}
}