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Metodo EditExpression

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

Spazio dei nomi:  Microsoft.SqlServer.Dts.Design
Assembly:  Microsoft.SqlServer.Dts.Design (in Microsoft.SqlServer.Dts.Design.dll)

Sintassi

'Dichiarazione
Function EditExpression ( _
    parentWindow As IWin32Window, _
    dtsContainer As DtsContainer, _
    expressionType As Type, _
    ByRef expression As String _
) As Boolean
'Utilizzo
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

Parametri

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

Valore restituito

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

Osservazioni

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.

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