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. |