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VB.NET ObjectQuery<T>.Union方法代碼示例

本文整理匯總了VB.NET中System.Data.Objects.ObjectQuery<T>.Union方法的典型用法代碼示例。如果您正苦於以下問題:VB.NET ObjectQuery<T>.Union方法的具體用法?VB.NET ObjectQuery<T>.Union怎麽用?VB.NET ObjectQuery<T>.Union使用的例子?那麽, 這裏精選的方法代碼示例或許可以為您提供幫助。您也可以進一步了解該方法所在System.Data.Objects.ObjectQuery<T>的用法示例。


在下文中一共展示了ObjectQuery<T>.Union方法的1個代碼示例,這些例子默認根據受歡迎程度排序。您可以為喜歡或者感覺有用的代碼點讚,您的評價將有助於係統推薦出更棒的VB.NET代碼示例。

示例1: AdventureWorksEntities

Dim productID = 100
Using context As New AdventureWorksEntities()
    Dim queryString As String = "SELECT VALUE product FROM AdventureWorksEntities.Products AS product " & _
            " WHERE product.ProductID < @productID"
    Dim productQuery As New ObjectQuery(Of Product)(queryString, context, MergeOption.NoTracking)

    Dim productQuery2 As New ObjectQuery(Of Product)(queryString, context, MergeOption.NoTracking)

    Dim productQuery3 As ObjectQuery(Of Product) = productQuery.Union(productQuery2)

    productQuery3.Parameters.Add(New ObjectParameter("productID", productID))

    Console.WriteLine("Result of Union")
    Console.WriteLine("------------------")

    ' Iterate through the collection of Product items, 
    ' after the Union method was called on two queries. 
    For Each result As Product In productQuery3
        Console.WriteLine("Product Name: {0}", result.ProductID)
    Next
End Using
開發者ID:VB.NET開發者,項目名稱:System.Data.Objects,代碼行數:21,代碼來源:ObjectQuery.Union


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