Метод IDtsDesignerUtilitiesService.EditExpression

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

Пространство имен:  Microsoft.SqlServer.Dts.Design
Сборка:  Microsoft.SqlServer.Dts.Design (в Microsoft.SqlServer.Dts.Design.dll)

Синтаксис

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

Параметры

• parentWindow
  Тип: System.Windows.Forms.IWin32Window
  The IWin32Window handle to the Windows form from which the Expression Builder dialog box is invoked.

• dtsContainer
  Тип: Microsoft.SqlServer.Dts.Runtime.DtsContainer
  The DtsContainer that defines the scope for package variables that can be used in the expression.

• expressionType
  Тип: System.Type
  The Type of the return type of the expression.

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

Возвращаемое значение

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

Замечания

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.

См. также

Справочник

IDtsDesignerUtilitiesService Интерфейс

Пространство имен Microsoft.SqlServer.Dts.Design