本文整理汇总了VB.NET中System.Linq.Queryable.LongCount方法的典型用法代码示例。如果您正苦于以下问题：VB.NET Queryable.LongCount方法的具体用法？VB.NET Queryable.LongCount怎么用？VB.NET Queryable.LongCount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。
在下文中一共展示了Queryable.LongCount方法的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: fruits
Dim fruits() As String = {"apple", "banana", "mango", _
"orange", "passionfruit", "grape"}
Dim count As Long = fruits.AsQueryable().LongCount()
MsgBox(String.Format("There are {0} fruits in the collection.", count))输出：
There are 6 fruits in the collection.
示例2: pets
Structure Pet
Public Name As String
Public Age As Integer
End Structure
Shared Sub LongCountEx2()
Dim pets() As Pet = {New Pet With {.Name = "Barley", .Age = 8}, _
New Pet With {.Name = "Boots", .Age = 4}, _
New Pet With {.Name = "Whiskers", .Age = 1}}
Const Age As Integer = 3
' Count the number of Pet objects where Pet.Age is greater than 3.
Dim count As Long = pets.AsQueryable().LongCount(Function(Pet) Pet.Age > Age)
MsgBox(String.Format("There are {0} animals over age {1}.", count, Age))
End Sub输出：
There are 2 animals over age 3.