TraceReader 类

The TraceReader class is an abstract Trace Object class that is used in the construction of the TraceServer class, the TraceTable class, and the TraceFile class.

继承层次结构

System.Object
  Microsoft.SqlServer.Management.Trace.TraceReader
    Microsoft.SqlServer.Management.Trace.TraceReaderWriter
    Microsoft.SqlServer.Management.Trace.TraceServer

命名空间：  Microsoft.SqlServer.Management.Trace
程序集：  Microsoft.SqlServer.ConnectionInfoExtended（在 Microsoft.SqlServer.ConnectionInfoExtended.dll 中）

语法

声明
<ComVisibleAttribute(False)> _
Public Class TraceReader _
    Implements IDataReader, IDisposable, IDataRecord
用法
Dim instance As TraceReader

[ComVisibleAttribute(false)]
public class TraceReader : IDataReader, 
    IDisposable, IDataRecord

[ComVisibleAttribute(false)]
public ref class TraceReader : IDataReader, 
    IDisposable, IDataRecord

[<ComVisibleAttribute(false)>]
type TraceReader =  
    class 
        interface IDataReader 
        interface IDisposable 
        interface IDataRecord 
    end

public class TraceReader implements IDataReader, IDisposable, IDataRecord

TraceReader 类型公开以下成员。

构造函数

	名称	说明
	TraceReader	Initializes a new instance of the TraceReader class.

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属性

	名称	说明
	Depth	Gets the depth value for the trace reader.
	FieldCount	Gets the number of columns in the data.
	IsClosed	Gets the Boolean property value that specifies whether the trace reader is closed.
	Item[Int32]	Gets the column specified by the index position.
	Item[String]	Gets the column with the specified name.
	RecordsAffected	Gets the number of records of data.

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方法

	名称	说明
	Close	Closes the trace reader.
	Dispose	Deletes the trace reader information.
	Equals	（从 Object 继承。）
	Finalize	（从 Object 继承。）
	GetBoolean	Returns a Boolean value from the record at the specified column position.
	GetByte	Returns a Byte value from the record at the specified column position.
	GetBytes	Gets a stream of bytes from the specified column offset into the buffer as an array, starting at the given buffer offset.
	GetChar	Gets a character value of the specified column.
	GetChars(Int32, array<Char[], Int32, Int32, Int32)	Gets a character array value from the record at the specified column position.
	GetChars(Int32, Int64, array<Char[], Int32, Int32)	Gets a character array value from the record at the specified column position.
	GetData	Returns IDataReader object used when the field points to a remote data structure.
	GetDataTypeName	Gets the data type of the data value at the specified column position.
	GetDateTime	Gets a DateTime value of the data value at the specified column position.
	GetDecimal	Gets a Decimal value of the data value at the specified column position.
	GetDouble	Gets a floating point value of the data value at the specified column position.
	GetFieldType	Returns the field type of the data value at the specified column position.
	GetFloat	Gets a floating point value of the data value at the specified column position.
	GetGuid	Gets a Guid system value of the data value at the specified column position.
	GetHashCode	（从 Object 继承。）
	GetInt16	Gets a small integer value of the data value at the specified column position.
	GetInt32	Gets an integer value of the data value at the specified column position.
	GetInt64	Gets a long integer value of the data value at the specified column position.
	GetName	Gets the name of the field at the specified column position.
	GetOrdinal	Gets the ordinal value of the data value at the specified column position.
	GetSchemaTable	Gets a table that describes the schema.
	GetStream	Gets the stream of data.
	GetString	Gets a String value at the specified column position.
	GetTimeSpan	Gets a TimeSpan value of the data value at the specified column position.
	GetType	（从 Object 继承。）
	GetValue	Gets a value of the data value at the specified column position.
	GetValues	Gets an array of values from the data value at the specified column position.
	IsDBNull	Specifies whether the specified column is set to null.
	IsNull	Gets a Boolean value that specifies whether value of the data at the specified column position is null.
	MemberwiseClone	（从 Object 继承。）
	NextResult	Moves to the next result in the trace.
	Read	Reads the trace record.
	ToString	（从 Object 继承。）
	TranslateSubclass	Translates the sub class.

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字段

	名称	说明
	currentRow	Specifies the current row.

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注释

The TraceReader class provides trace data reading functionality and access to data that is common to both the TraceServer class, the TraceTable class, and the TraceFile class.

The trace data reading functionality is also available on the TraceReaderWriter class, which is derived from the TraceReader class and is used in the construction of the TraceTable class and TraceFile class.

Thread Safety

此类型的任何公共静态（Microsoft Visual Basic 中的 Shared）成员在多线程操作中是安全的。但不保证所有实例成员都是线程安全的。

示例

Using SQL Server Profiler

线程安全

此类型的任何公共 static（在 Visual Basic 中为 Shared） 成员都是线程安全的。不保证所有实例成员都是线程安全的。

请参阅

参考

Microsoft.SqlServer.Management.Trace 命名空间

其他资源

跟踪标志 (Transact-SQL)

SQL Server Profiler 模板和权限