ExpressionEvaluatorClass.IsBooleanExpression 方法
此 API 支持 SQL Server 2012 基础结构，但不能通过代码直接使用。
Determines whether the expression is a Boolean expression.
命名空间： Microsoft.SqlServer.Dts.Runtime.Wrapper
程序集： Microsoft.SqlServer.DTSRuntimeWrap（在 Microsoft.SqlServer.DTSRuntimeWrap.dll 中）
语法
声明
Public Overridable Sub IsBooleanExpression ( _
pVariableDispenser As IDTSVariableDispenser100, _
<OutAttribute> ByRef pvbIsBoolean As Boolean _
)
用法
Dim instance As ExpressionEvaluatorClass
Dim pVariableDispenser As IDTSVariableDispenser100
Dim pvbIsBoolean As Boolean
instance.IsBooleanExpression(pVariableDispenser, _
pvbIsBoolean)
public virtual void IsBooleanExpression(
IDTSVariableDispenser100 pVariableDispenser,
out bool pvbIsBoolean
)
public:
virtual void IsBooleanExpression(
[InAttribute] IDTSVariableDispenser100^ pVariableDispenser,
[OutAttribute] bool% pvbIsBoolean
)
abstract IsBooleanExpression :
pVariableDispenser:IDTSVariableDispenser100 *
pvbIsBoolean:bool byref -> unit
override IsBooleanExpression :
pVariableDispenser:IDTSVariableDispenser100 *
pvbIsBoolean:bool byref -> unit
public function IsBooleanExpression(
pVariableDispenser : IDTSVariableDispenser100,
pvbIsBoolean : boolean
)
参数
- pVariableDispenser
类型：Microsoft.SqlServer.Dts.Runtime.Wrapper.IDTSVariableDispenser100
The object that is used to access the collection of variables.
- pvbIsBoolean
类型：System.Boolean%
When this method returns, contains a value that indicates whether the expression is a Boolean expression.
实现
IDTSExpressionEvaluator100.IsBooleanExpression(IDTSVariableDispenser100, Boolean%)