本文整理汇总了VB.NET中System.Linq.Queryable.All<TSource>方法的典型用法代码示例。如果您正苦于以下问题：VB.NET Queryable.All<TSource>方法的具体用法？VB.NET Queryable.All<TSource>怎么用？VB.NET Queryable.All<TSource>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。
在下文中一共展示了Queryable.All<TSource>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: AllEx
Sub AllEx()
' Create an array of Pets.
Dim pets() As Pet = _
{New Pet With {.Name = "Barley", .Age = 10}, _
New Pet With {.Name = "Boots", .Age = 4}, _
New Pet With {.Name = "Whiskers", .Age = 6}}
' Determine whether all pet names in the array start with 'B'.
Dim allStartWithB As Boolean = _
pets.AsQueryable().All(Function(ByVal pet) pet.Name.StartsWith("B"))
MsgBox(String.Format( _
"{0} pet names start with 'B'.", _
IIf(allStartWithB, "All", "Not all")))
End Sub
Public Structure Pet
Dim Name As String
Dim Age As Integer
End Structure输出：
Not all pet names start with 'B'.
示例2: AllEx2
Structure Pet
Public Name As String
Public Age As Integer
End Structure
Structure Person
Public LastName As String
Public Pets() As Pet
End Structure
Sub AllEx2()
Dim people As New List(Of Person)(New Person() _
{New Person With {.LastName = "Haas", _
.Pets = New Pet() {New Pet With {.Name = "Barley", .Age = 10}, _
New Pet With {.Name = "Boots", .Age = 14}, _
New Pet With {.Name = "Whiskers", .Age = 6}}}, _
New Person With {.LastName = "Fakhouri", _
.Pets = New Pet() {New Pet With {.Name = "Snowball", .Age = 1}}}, _
New Person With {.LastName = "Antebi", _
.Pets = New Pet() {New Pet With {.Name = "Belle", .Age = 8}}}, _
New Person With {.LastName = "Philips", _
.Pets = New Pet() {New Pet With {.Name = "Sweetie", .Age = 2}, _
New Pet With {.Name = "Rover", .Age = 13}}}})
' Determine which people have pets that are all older than 5.
Dim names = From person In people _
Where person.Pets.AsQueryable().All(Function(pet) pet.Age > 5) _
Select person.LastName
For Each name As String In names
Console.WriteLine(name)
Next
' This code produces the following output:
'
' Haas
' Antebi
End Sub