本文介绍了以编程方式记录到Sharepoint ULS的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
我想在Sharepoint Web部件中记录内容，但我希望它包含在ULS中。我发现的大多数示例都已登录到事件日志或其他文件中，但是我还没有真正找到用于登录ULS的示例。
I'd like to log stuff in my Sharepoint Web Parts, but I want it to go into the ULS. Most examples that I've found log into the Event Log or some other file, but I did not really find one yet for logging into the ULS.
Microsoft令人讨厌。 SharePoint.Diagnostics类都标记为Internal。我确实找到了无论如何，通过反射来使用它们，但这看起来确实是危险且不稳定的，因为Microsoft可能会使用所需的任何修补程序来更改该类。
Annoyingly, Microsoft.SharePoint.Diagnostics Classes are all marked Internal. I did find one example of how to use them anyway through reflection, but that looks really risky and unstable, because Microsoft may change that class with any hotfix they want.
Sharepoint文档也没有真正的帮助-有关什么是ULS以及如何配置它的许多管理员信息，但是我还没有找到一个支持的代码示例来实际记录我自己的事件。
The Sharepoint Documentation wasn't really helpful either - lots of Administrator info about what ULS is and how to configure it, but i have yet to find an example of supported code to actually log my own events.
任何提示或技巧？
编辑：从这个问题的年代开始，您可能会发现这是针对SharePoint 2007的。在SharePoint 2010中，您可以请使用SPDiagnosticsService.Local，然后
Yes this is possible, see this MSDN article: http://msdn2.microsoft.com/hi-in/library/aa979595(en-us).aspx
这是C＃中的一些示例代码：
And here is some sample code in C#:
using System;
using System.Runtime.InteropServices;
using Microsoft.SharePoint.Administration;
namespace ManagedTraceProvider
{
class Program
{
static void Main(string[] args)
{
TraceProvider.RegisterTraceProvider();
TraceProvider.WriteTrace(0, TraceProvider.TraceSeverity.High, Guid.Empty, "MyExeName", "Product Name", "Category Name", "Sample Message");
TraceProvider.WriteTrace(TraceProvider.TagFromString("abcd"), TraceProvider.TraceSeverity.Monitorable, Guid.NewGuid(), "MyExeName", "Product Name", "Category Name", "Sample Message");
TraceProvider.UnregisterTraceProvider();
}
}
static class TraceProvider
{
static UInt64 hTraceLog;
static UInt64 hTraceReg;
static class NativeMethods
{
internal const int TRACE_VERSION_CURRENT = 1;
internal const int ERROR_SUCCESS = 0;
internal const int ERROR_INVALID_PARAMETER = 87;
internal const int WNODE_FLAG_TRACED_GUID = 0x00020000;
internal enum TraceFlags
{
TRACE_FLAG_START = 1,
TRACE_FLAG_END = 2,
TRACE_FLAG_MIDDLE = 3,
TRACE_FLAG_ID_AS_ASCII = 4
}
// Copied from Win32 APIs
[StructLayout(LayoutKind.Sequential)]
internal struct EVENT_TRACE_HEADER_CLASS
{
internal byte Type;
internal byte Level;
internal ushort Version;
}
// Copied from Win32 APIs
[StructLayout(LayoutKind.Sequential)]
internal struct EVENT_TRACE_HEADER
{
internal ushort Size;
internal ushort FieldTypeFlags;
internal EVENT_TRACE_HEADER_CLASS Class;
internal uint ThreadId;
internal uint ProcessId;
internal Int64 TimeStamp;
internal Guid Guid;
internal uint ClientContext;
internal uint Flags;
}
[StructLayout(LayoutKind.Sequential, CharSet = CharSet.Unicode)]
internal struct ULSTraceHeader
{
internal ushort Size;
internal uint dwVersion;
internal uint Id;
internal Guid correlationID;
internal TraceFlags dwFlags;
[MarshalAs(UnmanagedType.ByValTStr, SizeConst = 32)]
internal string wzExeName;
[MarshalAs(UnmanagedType.ByValTStr, SizeConst = 32)]
internal string wzProduct;
[MarshalAs(UnmanagedType.ByValTStr, SizeConst = 32)]
internal string wzCategory;
[MarshalAs(UnmanagedType.ByValTStr, SizeConst = 800)]
internal string wzMessage;
}
[StructLayout(LayoutKind.Sequential)]
internal struct ULSTrace
{
internal EVENT_TRACE_HEADER Header;
internal ULSTraceHeader ULSHeader;
}
// Copied from Win32 APIs
internal enum WMIDPREQUESTCODE
{
WMI_GET_ALL_DATA = 0,
WMI_GET_SINGLE_INSTANCE = 1,
WMI_SET_SINGLE_INSTANCE = 2,
WMI_SET_SINGLE_ITEM = 3,
WMI_ENABLE_EVENTS = 4,
WMI_DISABLE_EVENTS = 5,
WMI_ENABLE_COLLECTION = 6,
WMI_DISABLE_COLLECTION = 7,
WMI_REGINFO = 8,
WMI_EXECUTE_METHOD = 9
}
// Copied from Win32 APIs
internal unsafe delegate uint EtwProc(NativeMethods.WMIDPREQUESTCODE requestCode, IntPtr requestContext, uint* bufferSize, IntPtr buffer);
// Copied from Win32 APIs
[DllImport("advapi32.dll", CharSet = CharSet.Unicode)]
internal static extern unsafe uint RegisterTraceGuids([In] EtwProc cbFunc, [In] void* context, [In] ref Guid controlGuid, [In] uint guidCount, IntPtr guidReg, [In] string mofImagePath, [In] string mofResourceName, out ulong regHandle);
// Copied from Win32 APIs
[DllImport("advapi32.dll", CharSet = CharSet.Unicode)]
internal static extern uint UnregisterTraceGuids([In]ulong regHandle);
// Copied from Win32 APIs
[DllImport("advapi32.dll", CharSet = CharSet.Unicode)]
internal static extern UInt64 GetTraceLoggerHandle([In]IntPtr Buffer);
// Copied from Win32 APIs
[DllImport("advapi32.dll", SetLastError = true)]
internal static extern uint TraceEvent([In]UInt64 traceHandle, [In]ref ULSTrace evnt);
}
public enum TraceSeverity
{
Unassigned = 0,
CriticalEvent = 1,
WarningEvent = 2,
InformationEvent = 3,
Exception = 4,
Assert = 7,
Unexpected = 10,
Monitorable = 15,
High = 20,
Medium = 50,
Verbose = 100,
}
public static void WriteTrace(uint tag, TraceSeverity level, Guid correlationGuid, string exeName, string productName, string categoryName, string message)
{
const ushort sizeOfWCHAR = 2;
NativeMethods.ULSTrace ulsTrace = new NativeMethods.ULSTrace();
// Pretty standard code needed to make things work
ulsTrace.Header.Size = (ushort)Marshal.SizeOf(typeof(NativeMethods.ULSTrace));
ulsTrace.Header.Flags = NativeMethods.WNODE_FLAG_TRACED_GUID;
ulsTrace.ULSHeader.dwVersion = NativeMethods.TRACE_VERSION_CURRENT;
ulsTrace.ULSHeader.dwFlags = NativeMethods.TraceFlags.TRACE_FLAG_ID_AS_ASCII;
ulsTrace.ULSHeader.Size = (ushort)Marshal.SizeOf(typeof(NativeMethods.ULSTraceHeader));
// Variables communicated to SPTrace
ulsTrace.ULSHeader.Id = tag;
ulsTrace.Header.Class.Level = (byte)level;
ulsTrace.ULSHeader.wzExeName = exeName;
ulsTrace.ULSHeader.wzProduct = productName;
ulsTrace.ULSHeader.wzCategory = categoryName;
ulsTrace.ULSHeader.wzMessage = message;
ulsTrace.ULSHeader.correlationID = correlationGuid;
// Pptionally, to improve performance by reducing the amount of data copied around,
// the Size parameters can be reduced by the amount of unused buffer in the Message
if (message.Length < 800)
{
ushort unusedBuffer = (ushort) ((800 - (message.Length + 1)) * sizeOfWCHAR);
ulsTrace.Header.Size -= unusedBuffer;
ulsTrace.ULSHeader.Size -= unusedBuffer;
}
if (hTraceLog != 0)
NativeMethods.TraceEvent(hTraceLog, ref ulsTrace);
}
public static unsafe void RegisterTraceProvider()
{
SPFarm farm = SPFarm.Local;
Guid traceGuid = farm.TraceSessionGuid;
uint result = NativeMethods.RegisterTraceGuids(ControlCallback, null, ref traceGuid, 0, IntPtr.Zero, null, null, out hTraceReg);
System.Diagnostics.Debug.Assert(result == NativeMethods.ERROR_SUCCESS);
}
public static void UnregisterTraceProvider()
{
uint result = NativeMethods.UnregisterTraceGuids(hTraceReg);
System.Diagnostics.Debug.Assert(result == NativeMethods.ERROR_SUCCESS);
}
public static uint TagFromString(string wzTag)
{
System.Diagnostics.Debug.Assert(wzTag.Length == 4);
return (uint) (wzTag[0] << 24 | wzTag[1] << 16 | wzTag[2] << 8 | wzTag[3]);
}
static unsafe uint ControlCallback(NativeMethods.WMIDPREQUESTCODE RequestCode, IntPtr Context, uint* InOutBufferSize, IntPtr Buffer)
{
uint Status;
switch (RequestCode)
{
case NativeMethods.WMIDPREQUESTCODE.WMI_ENABLE_EVENTS:
hTraceLog = NativeMethods.GetTraceLoggerHandle(Buffer);
Status = NativeMethods.ERROR_SUCCESS;
break;
case NativeMethods.WMIDPREQUESTCODE.WMI_DISABLE_EVENTS:
hTraceLog = 0;
Status = NativeMethods.ERROR_SUCCESS;
break;
default:
Status = NativeMethods.ERROR_INVALID_PARAMETER;
break;
}
*InOutBufferSize = 0;
return Status;
}
}
}
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