windbg 这个工具可以手动的来抓dump文件，如果你想你的程序智能一些，当遇到你开发的程序crash时，你想程序自己抓到dump文件，然后你去分析就可以。 最近我刚好遇到这样一个事情，所以找了找，借助网络和论坛的朋友，才完成了这样一个事情。MiniDumpWriteDump 这个win32 api 可以完成这样一个事情。因为现在使用的是c#，所以封装了一下

using System;
using System.Collections.Generic;
using System.Text;
using System.Runtime.InteropServices;
using System.Diagnostics;
using System.IO;
using System.Threading;

namespace MiniDump
...{
    class Program
    ...{
        static void Main(string[] args)
        ...{
            try
            ...{
                string a = "";
                a = null;
                if (a.ToString() == "1")
                    Console.WriteLine("a is 1");

               
            }
            catch 
            ...{
                MiniDump.TryDump("c:\MiniDmp.dmp", MiniDump.MiniDumpType.WithFullMemory);
            }

            Console.ReadKey();
        }
    }


   
    /**//// <summary>
    /// 该类要使用在windows 5.1 以后的版本，如果你的windows很旧，就把Windbg里面的dll拷贝过来，一般都没有问题
    /// DbgHelp.dll 是windows自带的 dll文件 。
    /// </summary>
    public static class MiniDump
    ...{
        /**//*
         * 导入DbgHelp.dll
         */
        [DllImport("DbgHelp.dll")]
        private static extern Boolean MiniDumpWriteDump(
                                    IntPtr hProcess,
                                    Int32 processId,
                                    IntPtr fileHandle,
                                    MiniDumpType dumpType, 
                                    ref MinidumpExceptionInfo excepInfo,
                                    IntPtr userInfo, 
                                    IntPtr extInfo );

        /**//*
         *  MINIDUMP_EXCEPTION_INFORMATION  这个宏的信息
         */
        struct MinidumpExceptionInfo
        ...{
            public Int32 ThreadId;
            public IntPtr ExceptionPointers;
            public Boolean ClientPointers;
        }

        /**//*
         * 自己包装的一个函数
         */
        public static Boolean TryDump(String dmpPath, MiniDumpType dmpType)
        ...{

            //使用文件流来创健 .dmp文件
            using (FileStream stream = new FileStream(dmpPath, FileMode.Create))
            ...{
                //取得进程信息
                Process process = Process.GetCurrentProcess();

                // MINIDUMP_EXCEPTION_INFORMATION 信息的初始化
                MinidumpExceptionInfo mei = new MinidumpExceptionInfo();

                mei.ThreadId = Thread.CurrentThread.ManagedThreadId;
                mei.ExceptionPointers = Marshal.GetExceptionPointers();
                mei.ClientPointers = true;

                
                //这里调用的Win32 API
                Boolean res = MiniDumpWriteDump(
                                    process.Handle,
                                    process.Id,
                                    stream.SafeFileHandle.DangerousGetHandle(),
                                    dmpType,
                                    ref mei,
                                    IntPtr.Zero,
                                    IntPtr.Zero);

                //清空 stream
                stream.Flush();
                stream.Close();

                return res;
            }
        }

        public enum MiniDumpType
        ...{
            None = 0x00010000,
            Normal = 0x00000000,
            WithDataSegs = 0x00000001,
            WithFullMemory = 0x00000002,
            WithHandleData = 0x00000004,
            FilterMemory = 0x00000008,
            ScanMemory = 0x00000010,
            WithUnloadedModules = 0x00000020,
            WithIndirectlyReferencedMemory = 0x00000040,
            FilterModulePaths = 0x00000080,
            WithProcessThreadData = 0x00000100,
            WithPrivateReadWriteMemory = 0x00000200,
            WithoutOptionalData = 0x00000400,
            WithFullMemoryInfo = 0x00000800,
            WithThreadInfo = 0x00001000,
            WithCodeSegs = 0x00002000
        }
    }


}