本文整理汇总了VB.NET中System.Data.Objects.ObjectQuery<T>.ObjectQuery构造函数的典型用法代码示例。如果您正苦于以下问题：VB.NET ObjectQuery<T>构造函数的具体用法？VB.NET ObjectQuery<T>怎么用？VB.NET ObjectQuery<T>使用的例子？那么, 这里精选的构造函数代码示例或许可以为您提供帮助。您也可以进一步了解该构造函数所在类System.Data.Objects.ObjectQuery<T>的用法示例。
在下文中一共展示了ObjectQuery<T>构造函数的2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
Using context As New AdventureWorksEntities()
' Call the constructor with a query for products and the ObjectContext.
Dim productQuery1 As New ObjectQuery(Of Product)("Products", context)
For Each result As Product In productQuery1
Console.WriteLine("Product Name: {0}", result.Name)
Next
Dim queryString As String = "SELECT VALUE product FROM AdventureWorksEntities.Products AS product"
' Call the constructor with the specified query and the ObjectContext.
Dim productQuery2 As New ObjectQuery(Of Product)(queryString, context)
For Each result As Product In productQuery2
Console.WriteLine("Product Name: {0}", result.Name)
Next
' Call the constructor with the specified query, the ObjectContext,
' and the NoTracking merge option.
Dim productQuery3 As New ObjectQuery(Of Product)(queryString, context, MergeOption.NoTracking)
For Each result As Product In productQuery3
Console.WriteLine("Product Name: {0}", result.Name)
Next
End Using示例2: AdventureWorksEntities
Dim productID = 900
Using context As New AdventureWorksEntities()
Dim queryString As String = "SELECT VALUE product FROM AdventureWorksEntities.Products AS product" & _
" WHERE product.ProductID > @productID"
Dim productQuery1 As New ObjectQuery(Of Product)(queryString, context, MergeOption.NoTracking)
productQuery1.Parameters.Add(New ObjectParameter("productID", productID))
Dim productQuery2 As ObjectQuery(Of DbDataRecord) = productQuery1.Select("it.ProductID")
For Each result As DbDataRecord In productQuery2
Console.WriteLine("{0}", result("ProductID"))
Next
End Using