EventSourceCreationData.CategoryCount 属性
定义
重要
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获取或设置类别资源文件中类别的数目。
public:
property int CategoryCount { int get(); void set(int value); };public int CategoryCount { get; set; }member this.CategoryCount : int with get, setPublic Property CategoryCount As Integer属性值
类别资源文件中的类别的数目。 默认值为零。
例外
属性设置为负值或大于 UInt16.MaxValue 的值。
示例
下面的代码示例确定是否在本地计算机上注册名为 SampleApplicationSource 的事件源。 如果事件源不存在，则本示例将设置源的消息资源文件并创建新的事件源。 最后，代码示例使用 中的资源标识符值和 中的 DisplayNameMsgId 资源文件路径 messageFile设置事件日志的本地化显示名称。
void CreateEventSourceSample1( String^ messageFile )
{
String^ myLogName;
String^ sourceName = "SampleApplicationSource";
// Create the event source if it does not exist.
if ( !EventLog::SourceExists( sourceName ) )
{
// Create a new event source for the custom event log
// named "myNewLog."
myLogName = "myNewLog";
EventSourceCreationData ^ mySourceData = gcnew EventSourceCreationData( sourceName,myLogName );
// Set the message resource file that the event source references.
// All event resource identifiers correspond to text in this file.
if ( !System::IO::File::Exists( messageFile ) )
{
Console::WriteLine( "Input message resource file does not exist - {0}", messageFile );
messageFile = "";
}
else
{
// Set the specified file as the resource
// file for message text, category text, and
// message parameter strings.
mySourceData->MessageResourceFile = messageFile;
mySourceData->CategoryResourceFile = messageFile;
mySourceData->CategoryCount = CategoryCount;
mySourceData->ParameterResourceFile = messageFile;
Console::WriteLine( "Event source message resource file set to {0}", messageFile );
}
Console::WriteLine( "Registering new source for event log." );
EventLog::CreateEventSource( mySourceData );
}
else
{
// Get the event log corresponding to the existing source.
myLogName = EventLog::LogNameFromSourceName( sourceName, "." );
}
// Register the localized name of the event log.
// For example, the actual name of the event log is "myNewLog," but
// the event log name displayed in the Event Viewer might be
// "Sample Application Log" or some other application-specific
// text.
EventLog^ myEventLog = gcnew EventLog( myLogName,".",sourceName );
if ( messageFile->Length > 0 )
{
myEventLog->RegisterDisplayName( messageFile, DisplayNameMsgId );
}
}
static void CreateEventSourceSample1(string messageFile)
{
string myLogName;
string sourceName = "SampleApplicationSource";
// Create the event source if it does not exist.
if(!EventLog.SourceExists(sourceName))
{
// Create a new event source for the custom event log
// named "myNewLog."
myLogName = "myNewLog";
EventSourceCreationData mySourceData = new EventSourceCreationData(sourceName, myLogName);
// Set the message resource file that the event source references.
// All event resource identifiers correspond to text in this file.
if (!System.IO.File.Exists(messageFile))
{
Console.WriteLine("Input message resource file does not exist - {0}",
messageFile);
messageFile = "";
}
else
{
// Set the specified file as the resource
// file for message text, category text, and
// message parameter strings.
mySourceData.MessageResourceFile = messageFile;
mySourceData.CategoryResourceFile = messageFile;
mySourceData.CategoryCount = CategoryCount;
mySourceData.ParameterResourceFile = messageFile;
Console.WriteLine("Event source message resource file set to {0}",
messageFile);
}
Console.WriteLine("Registering new source for event log.");
EventLog.CreateEventSource(mySourceData);
}
else
{
// Get the event log corresponding to the existing source.
myLogName = EventLog.LogNameFromSourceName(sourceName,".");
}
// Register the localized name of the event log.
// For example, the actual name of the event log is "myNewLog," but
// the event log name displayed in the Event Viewer might be
// "Sample Application Log" or some other application-specific
// text.
EventLog myEventLog = new EventLog(myLogName, ".", sourceName);
if (messageFile.Length > 0)
{
myEventLog.RegisterDisplayName(messageFile, DisplayNameMsgId);
}
}
Public Shared Sub CreateEventSourceSample1(ByVal messageFile As String)
Dim myLogName As String
Dim sourceName As String = "SampleApplicationSource"
' Create the event source if it does not exist.
If Not EventLog.SourceExists(sourceName)
' Create a new event source for the custom event log
' named "myNewLog."
myLogName = "myNewLog"
Dim mySourceData As EventSourceCreationData = New EventSourceCreationData(sourceName, myLogName)
' Set the message resource file that the event source references.
' All event resource identifiers correspond to text in this file.
If Not System.IO.File.Exists(messageFile)
Console.WriteLine("Input message resource file does not exist - {0}", _
messageFile)
messageFile = ""
Else
' Set the specified file as the resource
' file for message text, category text and
' message parameters strings.
mySourceData.MessageResourceFile = messageFile
mySourceData.CategoryResourceFile = messageFile
mySourceData.CategoryCount = CategoryCount
mySourceData.ParameterResourceFile = messageFile
Console.WriteLine("Event source message resource file set to {0}", _
messageFile)
End If
Console.WriteLine("Registering new source for event log.")
EventLog.CreateEventSource(mySourceData)
Else
' Get the event log corresponding to the existing source.
myLogName = EventLog.LogNameFromSourceName(sourceName,".")
End If
' Register the localized name of the event log.
' For example, the actual name of the event log is "myNewLog," but
' the event log name displayed in the Event Viewer might be
' "Sample Application Log" or some other application-specific
' text.
Dim myEventLog As EventLog = New EventLog(myLogName, ".", sourceName)
If messageFile.Length > 0
myEventLog.RegisterDisplayName(messageFile, DisplayNameMsgId)
End If
End Sub
该代码示例使用以下消息文本文件，该文件内置于资源库中 EventLogMsgs.dll。 消息文本文件是创建消息资源文件的源。 消息文本文件定义类别、事件消息和参数插入字符串的资源标识符和文本。
; // EventLogMsgs.mc
; // ********************************************************
; // Use the following commands to build this file:
; // mc -s EventLogMsgs.mc
; // rc EventLogMsgs.rc
; // link /DLL /SUBSYSTEM:WINDOWS /NOENTRY /MACHINE:x86 EventLogMsgs.Res
; // ********************************************************
; // - Event categories -
; // Categories must be numbered consecutively starting at 1.
; // ********************************************************
MessageId=0x1
Severity=Success
SymbolicName=INSTALL_CATEGORY
Language=English
Installation
.
MessageId=0x2
Severity=Success
SymbolicName=QUERY_CATEGORY
Language=English
Database Query
.
MessageId=0x3
Severity=Success
SymbolicName=REFRESH_CATEGORY
Language=English
Data Refresh
.
; // - Event messages -
; // *********************************
MessageId = 1000
Severity = Success
Facility = Application
SymbolicName = AUDIT_SUCCESS_MESSAGE_ID_1000
Language=English
My application message text, in English, for message id 1000, called from %1.
.
MessageId = 1001
Severity = Warning
Facility = Application
SymbolicName = AUDIT_FAILED_MESSAGE_ID_1001
Language=English
My application message text, in English, for message id 1001, called from %1.
.
MessageId = 1002
Severity = Success
Facility = Application
SymbolicName = GENERIC_INFO_MESSAGE_ID_1002
Language=English
My generic information message in English, for message id 1002.
.
MessageId = 1003
Severity = Warning
Facility = Application
SymbolicName = GENERIC_WARNING_MESSAGE_ID_1003
Language=English
My generic warning message in English, for message id 1003, called from %1.
.
MessageId = 1004
Severity = Success
Facility = Application
SymbolicName = UPDATE_CYCLE_COMPLETE_MESSAGE_ID_1004
Language=English
The update cycle is complete for %%5002.
.
MessageId = 1005
Severity = Warning
Facility = Application
SymbolicName = SERVER_CONNECTION_DOWN_MESSAGE_ID_1005
Language=English
The refresh operation did not complete because the connection to server %1 could not be established.
.
; // - Event log display name -
; // ********************************************************
MessageId = 5001
Severity = Success
Facility = Application
SymbolicName = EVENT_LOG_DISPLAY_NAME_MSGID
Language=English
Sample Event Log
.
; // - Event message parameters -
; // Language independent insertion strings
; // ********************************************************
MessageId = 5002
Severity = Success
Facility = Application
SymbolicName = EVENT_LOG_SERVICE_NAME_MSGID
Language=English
SVC_UPDATE.EXE
.
注解
CategoryCount使用 和 CategoryResourceFile 属性编写具有本地化类别字符串的事件。 如果在编写事件时提供类别，事件查看器将显示事件条目的类别。 事件日志类别是应用程序定义的字符串，可帮助筛选事件或提供有关事件的详细信息。 例如，应用程序可以为不同的组件或不同的操作定义单独的类别。
事件类别是可选的;如果应用程序不使用类别，则不要设置 CategoryCount 和 CategoryResourceFile 属性。
有关定义事件消息和生成事件资源文件的详细信息，请参阅平台 SDK 文档中 的消息编译器 一文。
