Selector

Full name Microsoft.VisualBasic.Scripting.Expressions.Selector Assembly Microsoft.VisualBasic.Runtime Members 6

The property value selector

01 Syntax

Microsoft.VisualBasic.Scripting.Expressions.Selector

02 Methods

Name	Overloads	Summary
Select	2
Select	2	Where selector.(这个函数之中只有数字和字符串的比较)
Select	1	Select all of the object elements their a specific property value and convert to a specific value type.
ParseExpression	1

03 Members

method Select overload 2 #

Select(IEnumerable, Type, String)

Select property value from target source collection by using a specific property name

Parameters

method Select overload 2 #

Select``1(IEnumerable, Type, String)

Select property value from target source collection by using a specific property name and with a specific type casting constraint.

Type Parameters

Name	Description
`T`

Parameters

method Select #

Select``1(IEnumerable(Of ``0), String, Selector(Of ``0))

Where selector.(这个函数之中只有数字和字符串的比较)

Type Parameters

Name	Description
`T`

Parameters

Name Type Description

source

IEnumerable(Of ``0)

expression$

String

$符号表示对象自身

method Select #

Select``2(IEnumerable(Of ``0), String)

Select all of the object elements their a specific property value and convert to a specific value type. (将对象类型之中的某一个属性筛选出来，然后转换为指定的数据类型)

Type Parameters

Name	Description
`T`
`V`

Parameters

Name	Type	Description
`source`	IEnumerable(Of ``0)	-
`propertyName$`	`String`	If the property name is `$` expression, that it means makes a type casting on it self. (如果属性名称为`$`，即引用自身，则这个函数的作用只是进行强制的`CType`类型转换)

method Select #

Select(IEnumerable(Of T), String)

method ParseExpression #

ParseExpression(String)