通过

ExpressionEvaluatorClass 类

  • 参考

定义

命名空间:
Microsoft.SqlServer.Dts.Runtime.Wrapper
程序集:
Microsoft.SqlServer.DTSRuntimeWrap.dll

为 IDTSExpressionEvaluator100 接口提供虚拟属性和方法。

public ref class ExpressionEvaluatorClass : Microsoft::SqlServer::Dts::Runtime::Wrapper::ExpressionEvaluator
[System.Runtime.InteropServices.ClassInterface(System.Runtime.InteropServices.ClassInterfaceType.None)]
[System.Runtime.InteropServices.Guid("AA05297E-8D4E-42DA-A202-4089915B4D5F")]
[System.Runtime.InteropServices.TypeLibType(System.Runtime.InteropServices.TypeLibTypeFlags.FCanCreate)]
public class ExpressionEvaluatorClass : Microsoft.SqlServer.Dts.Runtime.Wrapper.ExpressionEvaluator
[System.Runtime.InteropServices.ClassInterface(System.Runtime.InteropServices.ClassInterfaceType.None)]
[System.Runtime.InteropServices.TypeLibType(System.Runtime.InteropServices.TypeLibTypeFlags.FCanCreate)]
[System.Runtime.InteropServices.Guid("18CADA43-5BC6-4C16-BA94-F6C26C9876F2")]
public class ExpressionEvaluatorClass : Microsoft.SqlServer.Dts.Runtime.Wrapper.ExpressionEvaluator
[System.Runtime.InteropServices.ClassInterface(System.Runtime.InteropServices.ClassInterfaceType.None)]
[System.Runtime.InteropServices.TypeLibType(System.Runtime.InteropServices.TypeLibTypeFlags.FCanCreate)]
[System.Runtime.InteropServices.Guid("0B255723-C793-412E-97D9-691F358EB414")]
public class ExpressionEvaluatorClass : Microsoft.SqlServer.Dts.Runtime.Wrapper.ExpressionEvaluator
[<System.Runtime.InteropServices.ClassInterface(System.Runtime.InteropServices.ClassInterfaceType.None)>]
[<System.Runtime.InteropServices.Guid("AA05297E-8D4E-42DA-A202-4089915B4D5F")>]
[<System.Runtime.InteropServices.TypeLibType(System.Runtime.InteropServices.TypeLibTypeFlags.FCanCreate)>]
type ExpressionEvaluatorClass = class
    interface IDTSExpressionEvaluator100
    interface ExpressionEvaluator
[<System.Runtime.InteropServices.ClassInterface(System.Runtime.InteropServices.ClassInterfaceType.None)>]
[<System.Runtime.InteropServices.TypeLibType(System.Runtime.InteropServices.TypeLibTypeFlags.FCanCreate)>]
[<System.Runtime.InteropServices.Guid("18CADA43-5BC6-4C16-BA94-F6C26C9876F2")>]
type ExpressionEvaluatorClass = class
    interface IDTSExpressionEvaluator100
    interface ExpressionEvaluator
[<System.Runtime.InteropServices.ClassInterface(System.Runtime.InteropServices.ClassInterfaceType.None)>]
[<System.Runtime.InteropServices.TypeLibType(System.Runtime.InteropServices.TypeLibTypeFlags.FCanCreate)>]
[<System.Runtime.InteropServices.Guid("0B255723-C793-412E-97D9-691F358EB414")>]
type ExpressionEvaluatorClass = class
    interface IDTSExpressionEvaluator100
    interface ExpressionEvaluator
Public Class ExpressionEvaluatorClass
Implements ExpressionEvaluator
继承
Object
ExpressionEvaluatorClass
属性
ClassInterfaceAttribute GuidAttribute TypeLibTypeAttribute
实现
ExpressionEvaluator IDTSExpressionEvaluator100

构造函数

ExpressionEvaluatorClass()

初始化 ExpressionEvaluatorClass 类的新实例。

属性

EvaluatorContext

设置计算器的上下文。
Events

设置可在计算期间引发的事件。
Expression

设置要计算的字符串表达式。
LocaleID

获取或设置区域设置标识符。

方法

Evaluate(IDTSVariableDispenser100, Object, Boolean)

调用计算表达式结果的外部表达式计算器。
IsAssignmentExpression(IDTSVariableDispenser100, Boolean)

确定表达式是否是赋值表达式。
IsBooleanExpression(IDTSVariableDispenser100, Boolean)

确定表达式是否是布尔值表达式。

适用于