本文整理汇总了VB.NET中System.Data.Objects.ObjectParameterCollection.Contains方法的典型用法代码示例。如果您正苦于以下问题：VB.NET ObjectParameterCollection.Contains方法的具体用法？VB.NET ObjectParameterCollection.Contains怎么用？VB.NET ObjectParameterCollection.Contains使用的例子？那么, 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.ObjectParameterCollection的用法示例。
在下文中一共展示了ObjectParameterCollection.Contains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
Using context As New AdventureWorksEntities()
Dim queryString As String = "SELECT VALUE contact FROM AdventureWorksEntities.Contacts " & _
" AS contact WHERE contact.LastName = @ln AND contact.FirstName = @fn"
Dim contactQuery As New ObjectQuery(Of Contact)(queryString, context)
' Add parameters to the collection.
contactQuery.Parameters.Add(New ObjectParameter("ln", "Adams"))
contactQuery.Parameters.Add(New ObjectParameter("fn", "Frances"))
Dim objectParameterCollection As ObjectParameterCollection = contactQuery.Parameters
If objectParameterCollection.Contains("ln") Then
Console.WriteLine("ln is here")
Else
Console.WriteLine("ln is not here")
End If
End Using