VB.NET Queryable.LongCount方法代码示例

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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，您的评价将有助于我们的系统推荐出更棒的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))

开发者ID:VB.NET开发者，项目名称:System.Linq，代码行数:6，代码来源:Queryable.LongCount

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

开发者ID:VB.NET开发者，项目名称:System.Linq，代码行数:17，代码来源:Queryable.LongCount

输出：