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?組件描述

??? 該組件為Windows Phone 7 本身C#框架擴展了一系列方法，可以使你在編寫代碼的時候減少重復復制，并且增加了許多通用功能，使你的編寫代碼的時候可以更加流暢和得以應手。

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擴展類別

該組件是將我們日常常用到的數據類型或者集合等操作再一次封裝成易于使用的靜態方法，分類為如下幾大類：

• String 字符串擴展
• DateTime 日期擴展
• Guid 全局唯一標識符擴展
• IEnumerable 集合擴展
• Object 對象擴展
• Stream 流擴展
• Uri? 統一資源標識符擴展
• Bool? 真假“是否”擴展
• Int? 整型擴展

擴展方法體

以下為每個靜態類的擴展方法列表

StringExtensions

靜態方法成員截圖：

Format 代碼：

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public?static?string?Format(this?string?self,?params?object[]?args)
{
????if?(self?==?null)
????{
????????throw?new?ArgumentNullException("format");
????}
????return?string.Format(self,?args);
}

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HasValue 代碼：

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public?static?bool?HasValue(this?string?self)
{
????return?!string.IsNullOrEmpty(self);
}

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IsNullOrEmpty代碼：

public?static?bool?IsNullOrEmpty(this?string?self)
{
????return?string.IsNullOrEmpty(self);
}

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IsValidEmailAddress代碼：

public?static?bool?IsValidEmailAddress(this?string?self)
{
????Regex?regex?=?new?Regex(@"^[\w-\.]+@([\w-]+\.)+[\w-]{2,4}$");
????return?regex.IsMatch(self);
}

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Split 代碼：

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public?static?IEnumerable<string>?Split(this?string?self,?char?separator)
{
????return?self.Split(new?char[]?{?separator?});

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}

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public?static?IEnumerable<string>?Split(this?string?self,?string?separator)
{
????return?self.Split(new?string[]?{?separator?},?StringSplitOptions.None);
}

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ToInt 代碼：

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public?static?int?ToInt(this?string?self)
{
????int?num;
????if?(!int.TryParse(self,?out?num))
????{
????????throw?new?InvalidOperationException("Value?is?not?valid.");
????}
????return?num;
}

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Trim 代碼：

public?static?string?Trim(this?string?self,?char?character)
{
????return?self.Trim(new?char[]?{?character?});
}

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DateTimeExtensions

靜態方法成員截圖：

AddWeek 代碼：

public?static?DateTime?AddWeek(this?DateTime?dateTime)
{
????return?dateTime.AddDays(7.0);
}

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ToUnixTimestamp代碼：

public?static?long?ToUnixTimestamp(this?DateTime?date)
{
????DateTime?time?=?new?DateTime(0x7b2,?1,?1,?0,?0,?0);
????TimeSpan?span?=?(TimeSpan)?(date?-?time);
????return?(long)?span.TotalSeconds;
}

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Tip：上面的time 是1/1/1970 12:00:00 AM

GuidExtensions

靜態方法成員截圖：

IsGuidEmpty 代碼 ：

public?static?bool?IsGuidEmpty(this?Guid?self)
{
????return?(self?==?Guid.Empty);
}

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RemoveHyphen 代碼：

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public?static?string?RemoveHyphen(this?Guid?self)
{
????return?self.ToString().Replace("-",?"");
}

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IEnumerableExtensions

靜態方法成員截圖：

ExistsIn<T> 代碼：

public?static?bool?ExistsIn<T>(this?T?obj,?IEnumerable<T>?collection)
{
????return?Enumerable.Contains<T>(collection,?obj);
}

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ForEach<T> 代碼：

public?static?void?ForEach<T>(this?IEnumerable<T>?sequence,?Action<T>?action)
{
????if?(sequence?==?null)
????{
????????throw?new?ArgumentNullException("The?secuence?is?null!");
????}
????if?(action?==?null)
????{
????????throw?new?ArgumentNullException("The?action?is?null!");
????}
????foreach?(T?local?in?sequence)
????{
????????action(local);
????}
}

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IsNullOrEmpty 代碼：

public?static?bool?IsNullOrEmpty<T>(this?IEnumerable<T>?obj)
{
????if?(!obj.IsNull())
????{
????????return?(Enumerable.Count<T>(obj)?==?0);
????}
????return?true;
}

ToObservableCollection<T> 代碼：

public?static?ObservableCollection<T>?ToObservableCollection<T>(this?IEnumerable<T>?source)
{
????ObservableCollection<T>?observables?=?new?ObservableCollection<T>();
????source.ForEach<T>(new?Action<T>(observables.Add));
????return?observables;
}

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ObjectExtensions

靜態方法成員截圖：

In 代碼：

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public?static?bool?In(this?object?self,?IEnumerable?enumerable)
{
????return?(enumerable.IsNotNull()?&&?Enumerable.Contains<object>(Enumerable.Cast<object>(enumerable),?self));
}

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IsNotNull 代碼：

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public?static?bool?IsNotNull(this?object?self)
{
????return?(self?!=?null);
}

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IsNull 代碼：

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public?static?bool?IsNull(this?object?self)
{
????return?(self?==?null);
}

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NullTolerantEquals 代碼：

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public?static?bool?NullTolerantEquals(this?object?self,?object?obj)
{
????if?(self.IsNull()?&&?obj.IsNotNull())
????{
????????return?false;
????}
????if?(self.IsNotNull()?&&?obj.IsNull())
????{
????????return?false;
????}
????return?((self.IsNull()?&&?obj.IsNull())?||?self.Equals(obj));
}

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StreamExtensions

靜態方法成員列表截圖：

EqualsStream 代碼：

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public?static?bool?EqualsStream(this?Stream?originalStream,?Stream?streamToCompareWith)
{
????return?originalStream.EqualsStream(streamToCompareWith,?Math.Max(originalStream.Length,?streamToCompareWith.Length));
}

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public?static?bool?EqualsStream(this?Stream?originalStream,?Stream?streamToCompareWith,?long?readLength)
{
????originalStream.Position?=?0L;
????streamToCompareWith.Position?=?0L;
????for?(int?i?=?0;?i?<?readLength;?i++)
????{
????????if?(originalStream.ReadByte()?!=?streamToCompareWith.ReadByte())
????????{
????????????return?false;
????????}
????}
????return?true;
}

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ReadAllText 代碼：

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public?static?string?ReadAllText(this?Stream?stream)
{
????using?(StreamReader?reader?=?new?StreamReader(stream))
????{
????????return?reader.ReadToEnd();
????}
}

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ToByteArray 代碼：

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public?static?byte[]?ToByteArray(this?Stream?stream)
{
????MemoryStream?writeStream?=?new?MemoryStream();
????StreamHelper.CopyStream(stream,?writeStream,?true);
????return?writeStream.ToArray();
}

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UriExtensions

靜態方法成員列表截圖：

Parameters 代碼：

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public?static?Dictionary<string,?string>?Parameters(this?Uri?self)
{
????if?(self.IsNull())
????{
????????throw?new?ArgumentException("Uri?can't?be?null.");
????}
????if?(string.IsNullOrEmpty(self.Query))
????{
????????return?new?Dictionary<string,?string>();
????}
????if?(CS$<>9__CachedAnonymousMethodDelegate2?==?null)
????{
????????CS$<>9__CachedAnonymousMethodDelegate2?=?new?Func<string,?string>(null,?(IntPtr)?<Parameters>b__0);
????}
????if?(CS$<>9__CachedAnonymousMethodDelegate3?==?null)
????{
????????CS$<>9__CachedAnonymousMethodDelegate3?=?new?Func<string,?string>(null,?(IntPtr)?<Parameters>b__1);
????}
????return?Enumerable.ToDictionary<string,?string,?string>(self.Query.Substring(1).Split(new?char[]?{?'&'?}),?CS$<>9__CachedAnonymousMethodDelegate2,?CS$<>9__CachedAnonymousMethodDelegate3);
}

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BoolExtensions

靜態方法成員列表截圖：

IsFalse 代碼：

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public?static?bool?IsFalse(this?bool?self)
{
????return?!self;
}

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IsTrue 代碼：

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public?static?bool?IsTrue(this?bool?self)
{
????return?self;
}

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IntExtensions

靜態方法成員列表截圖：

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IsWithin 代碼：

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public?static?bool?IsWithin(this?int?self,?int?minimum,?int?maximum)
{
????if?(minimum?>?maximum)
????{
????????throw?new?ArgumentException("minimum?must?be?of?less?value?than?maximum.");
????}
????return?((self?>=?minimum)?&&?(self?<=?maximum));
}

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組件下載：Extension

轉載于:https://www.cnblogs.com/TerryBlog/archive/2011/02/27/1966479.html

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