IDbCommand 接口

Represents a statement that is executed while an open connection to a data source exists.

命名空间：  Microsoft.ReportingServices.DataProcessing
程序集：   Microsoft.ReportingServices.SharePoint.UI.WebParts（在 Microsoft.ReportingServices.SharePoint.UI.WebParts.dll 中）
  Microsoft.ReportingServices.Interfaces（在 Microsoft.ReportingServices.Interfaces.dll 中）

语法

声明
Public Interface IDbCommand _
    Inherits IDisposable
用法
Dim instance As IDbCommand

public interface IDbCommand : IDisposable

public interface class IDbCommand : IDisposable

type IDbCommand =  
    interface
        interface IDisposable
    end

public interface IDbCommand extends IDisposable

IDbCommand 类型公开以下成员。

属性

	名称	说明
	CommandText	Gets or sets the text command to run against the data source.
	CommandTimeout	Gets or sets the wait time before terminating the attempt to execute a command and generating an error.
	CommandType	Indicates or specifies how the CommandText property is interpreted (as text, a stored procedure, etc.).
	Parameters	Gets the IDataParameterCollection.
	Transaction	Gets or sets the transaction in which the Command object of a SQL Server Reporting Services data provider executes.

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方法

	名称	说明
	Cancel	Attempts to cancel the execution of an IDbCommand.
	CreateParameter	Creates a new instance of an IDataParameter object.
	Dispose	（从 IDisposable 继承。）
	ExecuteReader	Executes the CommandText against the Connection and builds an IDataReader.

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注释

The IDbCommand interface enables you to implement a Command class, which represents a statement that is executed at a data source. For more information about Command classes, see 为数据处理扩展插件实现 Command 类.

An application does not create an instance of the IDbCommand interface directly, but creates an instance of a class that implements IDbCommand.

Classes that implement IDbCommand must also implement all required members, and typically define additional members to add provider-specific functionality.

When you implement from the IDbCommand interface, you should implement the following constructors:

Item	Description
PrvCommand()	Initializes a new instance of the PrvCommand class.
PrvCommand(string cmdText)	Initializes a new instance of the PrvCommand class with the text of the query.
PrvCommand(string cmdText, PrvTransaction transaction)	Initializes a new instance of the PrvCommand class with the text of the query, a PrvConnection, and the PrvTransaction.

请参阅

参考

Microsoft.ReportingServices.DataProcessing 命名空间