Class ICollectionsExtensions

ICollections 扩展方法

Inheritance

Object

ICollectionsExtensions

Inherited Members

Object.Equals(Object)

Object.Equals(Object, Object)

Object.GetHashCode()

Object.GetType()

Object.MemberwiseClone()

Object.ReferenceEquals(Object, Object)

Object.ToString()

Namespace: Lett.Extensions

Assembly: Lett.Extensions.dll

Syntax

public static class ICollectionsExtensions

Methods

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AddIfNotContains<T>(ICollection<T>, T)

如果不包含，则添加

Declaration

public static void AddIfNotContains<T>(this ICollection<T> this, T item)

Parameters

Type	Name	Description
ICollection<T>	this
T	item	匹配项

Type Parameters

Name	Description
T	集合中元素的类型

Examples

var list = new List<string> {"aa", "bb"};
list.AddIfNotContains("cc");
list.AddIfNotContains("aa");
// {"aa", "bb", "cc"}

Exceptions

Type	Condition
NotSupportedException	`this` maybe is read-only

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AddIfNotContains<T>(ICollection<T>, IEnumerable<T>)

如果不包含，则添加

Declaration

public static void AddIfNotContains<T>(this ICollection<T> this, IEnumerable<T> items)

Parameters

Type	Name	Description
ICollection<T>	this
IEnumerable<T>	items	匹配项集合

Type Parameters

Name	Description
T	集合中元素的类型

Examples

var list = new List<string> {"aa", "bb"};
var appendList = new[] {"cc", "aa"};
list.AddIfNotContains(appendList);
// {"aa", "bb", "cc"}

Exceptions

Type	Condition
NotSupportedException	`this` maybe is read-only

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AddIfNotContainsParams<T>(ICollection<T>, T[])

如果不包含，则添加

Declaration

public static void AddIfNotContainsParams<T>(this ICollection<T> this, params T[] items)

Parameters

Type	Name	Description
ICollection<T>	this
T[]	items	匹配项集合

Type Parameters

Name	Description
T	集合中元素的类型

Examples

var list = new List<string> {"aa", "bb"};
list.AddIfNotContains("cc", "aa");
// {"aa", "bb", "cc"}

Exceptions

Type	Condition
NotSupportedException	`this` maybe is read-only

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AddRange<T>(ICollection<T>, IEnumerable<T>)

批量添加

Declaration

public static void AddRange<T>(this ICollection<T> this, IEnumerable<T> items)

Parameters

Type	Name	Description
ICollection<T>	this
IEnumerable<T>	items

Type Parameters

Name	Description
T

Examples

var list       = new List<string> {"aa", "bb"};
var appendList = new List<string> {"cc", "aa"};
list.AddRange(appendList);
// {"aa", "bb", "cc", "aa"}

Exceptions

Type	Condition
NotSupportedException	`this` maybe is read-only
ArgumentNullException	`this`

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AddRangeParams<T>(ICollection<T>, T[])

批量添加

Declaration

public static void AddRangeParams<T>(this ICollection<T> this, params T[] items)

Parameters

Type	Name	Description
ICollection<T>	this
T[]	items

Type Parameters

Name	Description
T

Examples

var list       = new List<string> {"aa", "bb"};
list.AddRange("cc", "aa");
// {"aa", "bb", "cc", "aa"}

Exceptions

Type	Condition
NotSupportedException	`this` maybe is read-only