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EventAttribute.Opcode Property

  • Reference

Definition

Namespace:
System.Diagnostics.Tracing
Assemblies:
mscorlib.dll, System.Diagnostics.Tracing.dll
Assemblies:
netstandard.dll, System.Diagnostics.Tracing.dll
Assembly:
System.Diagnostics.Tracing.dll
Assembly:
mscorlib.dll
Assembly:
netstandard.dll
Source:
EventSource.cs
Source:
EventSource.cs
Source:
EventSource.cs

Gets or sets the operation code for the event.

C# 
public System.Diagnostics.Tracing.EventOpcode Opcode { get; set; }

Property Value

EventOpcode

One of the enumeration values that specifies the operation code.

Examples

The following example shows how to use the Opcode property to specify operation codes. This code example is part of a larger example provided for the EventSource class.

C# 
[Event(4, Opcode = EventOpcode.Stop, Task = Tasks.Page, Keywords = Keywords.Page, Level = EventLevel.Informational)]
public void PageStop(int ID) { if (IsEnabled()) WriteEvent(4, ID); }
C# 
[Event(5, Opcode = EventOpcode.Start, Task = Tasks.DBQuery, Keywords = Keywords.DataBase, Level = EventLevel.Informational)]
public void DBQueryStart(string sqlQuery) { WriteEvent(5, sqlQuery); }
C# 
[Event(6, Opcode = EventOpcode.Stop, Task = Tasks.DBQuery, Keywords = Keywords.DataBase, Level = EventLevel.Informational)]
public void DBQueryStop() { WriteEvent(6); }

Applies to

Product Versions
.NET Core 1.0, Core 1.1, Core 2.0, Core 2.1, Core 2.2, Core 3.0, Core 3.1, 5, 6, 7, 8, 9, 10
.NET Framework 4.5, 4.5.1, 4.5.2, 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, 4.7.2, 4.8, 4.8.1
.NET Standard 1.1, 1.2, 1.3, 1.4, 1.5, 1.6, 2.0, 2.1
UWP 10.0