本文整理汇总了VB.NET中System.Data.Objects.ObjectQuery<T>.UnionAll方法的典型用法代码示例。如果您正苦于以下问题：VB.NET ObjectQuery<T>.UnionAll方法的具体用法？VB.NET ObjectQuery<T>.UnionAll怎么用？VB.NET ObjectQuery<T>.UnionAll使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类System.Data.Objects.ObjectQuery<T>的用法示例。
在下文中一共展示了ObjectQuery<T>.UnionAll方法的1个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的VB.NET代码示例。
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.UnionAll(productQuery2)
productQuery3.Parameters.Add(New ObjectParameter("productID", productID))
Console.WriteLine("Result of UnionAll")
Console.WriteLine("------------------")
' Iterate through the collection of Product items,
' after the UnionAll method was called on two queries.
For Each result As Product In productQuery3
Console.WriteLine("Product Name: {0}", result.ProductID)
Next
Dim productQuery4 As ObjectQuery(Of Product) = productQuery3.Distinct()
Console.WriteLine(vbLf & "Result of Distinct")
Console.WriteLine("------------------")
' Iterate through the collection of Product items.
' after the Distinct method was called on a query.
For Each result As Product In productQuery4
Console.WriteLine("Product Name: {0}", result.ProductID)
Next
End Using