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EditExpression 方法

Displays the Expression Builder dialog box that lets the end user use the Integration Services expression language to create and test an expression.

命名空間：  Microsoft.SqlServer.Dts.Design
組件：  Microsoft.SqlServer.Dts.Design (在 Microsoft.SqlServer.Dts.Design.dll 中)

語法

'宣告
Function EditExpression ( _
    parentWindow As IWin32Window, _
    dtsContainer As DtsContainer, _
    expressionType As Type, _
    ByRef expression As String _
) As Boolean
'用途
Dim instance As IDtsDesignerUtilitiesService
Dim parentWindow As IWin32Window
Dim dtsContainer As DtsContainer
Dim expressionType As Type
Dim expression As String
Dim returnValue As Boolean

returnValue = instance.EditExpression(parentWindow, _
    dtsContainer, expressionType, expression)

bool EditExpression(
    IWin32Window parentWindow,
    DtsContainer dtsContainer,
    Type expressionType,
    ref string expression
)

bool EditExpression(
    IWin32Window^ parentWindow, 
    DtsContainer^ dtsContainer, 
    Type^ expressionType, 
    String^% expression
)

abstract EditExpression : 
        parentWindow:IWin32Window * 
        dtsContainer:DtsContainer * 
        expressionType:Type * 
        expression:string byref -> bool 

function EditExpression(
    parentWindow : IWin32Window, 
    dtsContainer : DtsContainer, 
    expressionType : Type, 
    expression : String
) : boolean

參數

  • expression
    型別：System. . :: . .String%
    A string that is passed by reference and represents the expression.

傳回值

型別：System. . :: . .Boolean
true if the expression has changed; otherwise, false.

備註

You can use the EditExpression method whenever you want to let the user create or modify an expression. However, to modify a property expression, the EditPropertyExpression method might be more useful. The EditPropertyExpression method determines the return type of the expression from the data type of the property and assigns the expression to the property for you.