Search
Module:
Directory

   Desktop Functions:

   Smart Device Functions:


Show Recent Changes
Subscribe (RSS)
Misc. Pages
Comments
FAQ
Helpful Tools
Playground
Suggested Reading
Website TODO List
Download Visual Studio Add-In

MiniDumpWriteDump (dbghelp)
 
.
Summary
Writes user-mode minidump information to the specified file.

C# Signature:

[DllImport("Dbghelp.dll")]
static extern bool MiniDumpWriteDump(IntPtr hProcess, uint ProcessId, IntPtr hFile, int DumpType, ref MINIDUMP_EXCEPTION_INFORMATION ExceptionParam, IntPtr UserStreamParam, IntPtr CallbackParam);

VB Signature:

Declare Function MiniDumpWriteDump Lib "Dbghelp.dll" (TODO) As TODO

User-Defined Types:

MINIDUMP_EXCEPTION_INFORMATION

Alternative Managed API:

Do you know one? Please contribute it!

Notes:

None.

Tips & Tricks:

Minidump Types:

    internal enum MINIDUMP_TYPE
    {
        MiniDumpNormal = 0x00000000,
        MiniDumpWithDataSegs = 0x00000001,
        MiniDumpWithFullMemory = 0x00000002,
        MiniDumpWithHandleData = 0x00000004,
        MiniDumpFilterMemory = 0x00000008,
        MiniDumpScanMemory = 0x00000010,
        MiniDumpWithUnloadedModules = 0x00000020,
        MiniDumpWithIndirectlyReferencedMemory = 0x00000040,
        MiniDumpFilterModulePaths = 0x00000080,
        MiniDumpWithProcessThreadData = 0x00000100,
        MiniDumpWithPrivateReadWriteMemory = 0x00000200,
        MiniDumpWithoutOptionalData = 0x00000400,
        MiniDumpWithFullMemoryInfo = 0x00000800,
        MiniDumpWithThreadInfo = 0x00001000,
        MiniDumpWithCodeSegs = 0x00002000
    }

Please add some!

Sample Code:

[DllImport("Dbghelp.dll")]
static extern bool MiniDumpWriteDump(IntPtr hProcess, uint ProcessId, IntPtr hFile, int DumpType, ref MINIDUMP_EXCEPTION_INFORMATION ExceptionParam,IntPtr UserStreamParam, IntPtr CallbackParam);
[DllImport("kernel32.dll")]
static extern IntPtr GetCurrentProcess();

[DllImport("kernel32.dll")]
static extern uint GetCurrentProcessId();

[DllImport("kernel32.dll")]
static extern uint GetCurrentThreadId();

[StructLayout(LayoutKind.Sequential, Pack = 4)]
public struct MINIDUMP_EXCEPTION_INFORMATION
{
    public uint ThreadId;
    public IntPtr ExceptionPointers;
    public int ClientPointers;
}

/// <summary>
/// Call back function that will be called when an exception has occured. This function will create
/// a fullmemory dump of the application
/// </summary>
  /// <param name="sender"></param>
/// <param name="e"></param>
static void CurrentDomain_UnhandledException(object sender, UnhandledExceptionEventArgs e)
{
    string assemblyPath = Assembly.GetEntryAssembly().Location;
    string dumpFileName = assemblyPath + "_" + DateTime.Now.ToString("dd.MM.yyyy.HH.mm.ss") + ".dmp";
    FileStream file = new FileStream(dumpFileName, FileMode.Create);
    MINIDUMP_EXCEPTION_INFORMATION info = new MINIDUMP_EXCEPTION_INFORMATION();
    info.ClientPointers = 1;
    info.ExceptionPointers = Marshal.GetExceptionPointers();
    info.ThreadId = GetCurrentThreadId();
    // A full memory dump is necessary in the case of a managed application, other wise no information
    // regarding the managed code will be available
    MiniDumpWriteDump( GetCurrentProcess(), GetCurrentProcessId(), file.SafeFileHandle.DangerousGetHandle(), MiniDumpWithFullMemory, ref info, IntPtr.Zero, IntPtr.Zero );
    file.Close();
    string exeName = Path.GetFileName(assemblyPath);
    MessageBox.Show( "An Unhanled exception has been detected in the application " + exeName + " .\r\nException information is saved in " + dumpFileName,
            "Error", MessageBoxButton.OK, MessageBoxImage.Error);
}

private static readonly int MiniDumpWithFullMemory = 2;

Documentation

Please edit this page!

Do you have...

  • helpful tips or sample code to share for using this API in managed code?
  • corrections to the existing content?
  • variations of the signature you want to share?
  • additional languages you want to include?

Select "Edit This Page" on the right hand toolbar and edit it! Or add new pages containing supporting types needed for this API (structures, delegates, and more).

 
Access PInvoke.net directly from VS:
Terms of Use
Find References
Show Printable Version
Revisions