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

页首

方法

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

页首

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.