本文整理汇总了VB.NET中System.Linq.Queryable.Count方法的典型用法代码示例。如果您正苦于以下问题：VB.NET Queryable.Count方法的具体用法？VB.NET Queryable.Count怎么用？VB.NET Queryable.Count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.Count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 numberOfFruits As Integer = fruits.AsQueryable().Count()
MsgBox(String.Format( _
"There are {0} items in the array.", _
numberOfFruits))输出：
There are 6 items in the array.
示例2: pets
Structure Pet
Public Name As String
Public Vaccinated As Boolean
End Structure
Shared Sub CountEx2()
' Create an array of Pet objects.
Dim pets() As Pet = {New Pet With {.Name = "Barley", .Vaccinated = True}, _
New Pet With {.Name = "Boots", .Vaccinated = False}, _
New Pet With {.Name = "Whiskers", .Vaccinated = False}}
' Count the number of unvaccinated pets in the array.
Dim numberUnvaccinated As Integer = pets.AsQueryable().Count(Function(p) p.Vaccinated = False)
MsgBox(String.Format("There are {0} unvaccinated animals.", numberUnvaccinated))
End Sub输出：
There are 2 unvaccinated animals.