ExpressionEvaluatorClass.Evaluate 方法
此 API 支持 SQL Server 2012 基础结构，但不能通过代码直接使用。
Calls an external expression evaluator that evaluates the 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 Evaluate ( _
pVariableDispenser As IDTSVariableDispenser100, _
<OutAttribute> ByRef pvResult As Object, _
vbSetVariable As Boolean _
)
用法
Dim instance As ExpressionEvaluatorClass
Dim pVariableDispenser As IDTSVariableDispenser100
Dim pvResult As Object
Dim vbSetVariable As Boolean
instance.Evaluate(pVariableDispenser, _
pvResult, vbSetVariable)
public virtual void Evaluate(
IDTSVariableDispenser100 pVariableDispenser,
out Object pvResult,
bool vbSetVariable
)
public:
virtual void Evaluate(
[InAttribute] IDTSVariableDispenser100^ pVariableDispenser,
[OutAttribute] Object^% pvResult,
[InAttribute] bool vbSetVariable
)
abstract Evaluate :
pVariableDispenser:IDTSVariableDispenser100 *
pvResult:Object byref *
vbSetVariable:bool -> unit
override Evaluate :
pVariableDispenser:IDTSVariableDispenser100 *
pvResult:Object byref *
vbSetVariable:bool -> unit
public function Evaluate(
pVariableDispenser : IDTSVariableDispenser100,
pvResult : Object,
vbSetVariable : boolean
)
参数
- pVariableDispenser
类型：Microsoft.SqlServer.Dts.Runtime.Wrapper.IDTSVariableDispenser100
The object that is used to access the collection of variables.
- pvResult
类型：System.Object%
When this method returns, contains the result of the evaluation. This parameter is passed uninitialized.
- vbSetVariable
类型：System.Boolean
true to indicate that the result is assigned to a variable; otherwise, false.
实现
IDTSExpressionEvaluator100.Evaluate(IDTSVariableDispenser100, Object%, Boolean)