在C＃代碼中增加版本號

我在數據庫中維護文檔版本。可以說我想更新或增加版本號。我試過這個，但它顯示我的屬性是隻讀？在C＃代碼中增加版本號

string _versionDB = "1.0.0.0" 

var version = new Version(_versionDB); 
version.MajorRevision = version.Minor + 1; //error it says read only

請任何人都能詳細說明增加版本號的正確方法嗎？

來源

2014-09-22 Hammad Bukhari

由於http://msdn.microsoft.com/en-us/library/system.version（V = vs.110的[System.Version]（屬性）.aspx）是隻讀的。爲什麼不能實現你自己的功能來分配值 – 2014-09-22 07:13:22

請你可以在這裏放一些示例代碼我如何實現我自己的功能？ – 2014-09-22 07:16:08

這取決於你想要的格式。最簡單的就是將該值存儲爲int，然後將其增加。如果你真的想要像上面顯示的那樣，那麼你需要拆分字符串，將值轉換爲數字，增加一個或多個，然後將它們加回到字符串 – 2014-09-22 07:27:01

我知道這是有點老了，但爲尋找如何做到這一點，這可能會幫助：

string _versionDB = "1.0.0.0" 

var version = new Version(_versionDB); 

// Increment Major version 
var newMajorVersion = new Version(version.Major+1,version.Minor,version.Build,version.Revision); 
// Increment Minor version 
var newMinorVersion = new Version(version.Major,version.Minor+1,version.Build,version.Revision); 
// Increment Build version 
var newBuildVersion = new Version(version.Major,version.Minor,version.Build+1,version.Revision); 
// Increment Revision 
var newRevisionVersion = new Version(version.Major,version.Minor,version.Build,version.Revision+1);

返回字符串根據您的變量設置回保存到數據庫中（假設名稱）：

_versionDB = newMajorVersion.ToString();

來源

2015-05-06 12:40:12 Calle

您可以創建一個擴展方法爲您執行添加。仍然需要自定義代碼;但如果你在很多地方這樣做，有這樣一個輔助方法可能是有用的。以下是一些可能有用的功能。

public static class VersionExtension { 

    public static Version IncrementRevision(this Version version) { 
     return AddVersion(version, 0, 0, 0, 1); 
    } 
    public static Version IncrementBuild(this Version version) { 
     return IncrementBuild(version, true); 
    } 
    public static Version IncrementBuild(this Version version, bool resetLowerNumbers) { 
     return AddVersion(version, 0, 0, 1, resetLowerNumbers ? -version.Revision : 0); 
    } 
    public static Version IncrementMinor(this Version version) { 
     return IncrementMinor(version, true); 
    } 
    public static Version IncrementMinor(this Version version, bool resetLowerNumbers) { 
     return AddVersion(version, 0, 1, resetLowerNumbers ? -version.Build : 0, resetLowerNumbers ? -version.Revision : 0); 
    } 
    public static Version IncrementMajor(this Version version) { 
     return IncrementMajor(version, true); 
    } 
    public static Version IncrementMajor(this Version version, bool resetLowerNumbers) { 
     return AddVersion(version, 1, resetLowerNumbers ? -version.Minor : 0, resetLowerNumbers ? -version.Build : 0, resetLowerNumbers ? -version.Revision : 0); 
    } 

    public static Version AddVersion(this Version version, string addVersion) { 
     return AddVersion(version, new Version(addVersion)); 
    } 
    public static Version AddVersion(this Version version, Version addVersion) { 
     return AddVersion(version, addVersion.Major, addVersion.Minor, addVersion.Build, addVersion.Revision); 
    } 
    public static Version AddVersion(this Version version, int major, int minor, int build, int revision) { 
     return SetVersion(version, version.Major + major, version.Minor + minor, version.Build + build, version.Revision + revision); 
    } 
    public static Version SetVersion(this Version version, int major, int minor, int build, int revision) { 
     return new Version(major, minor, build, revision); 
    } 

    /* 
    //one day we may even be able to do something like this... 
    //https://github.com/dotnet/csharplang/issues/192 
    public static Version operator +(Version version, int revision) { 
     return AddVersion(version, 0, 0, 0, revision); 
    } 
    public static Version operator ++(Version version) { 
     return IncrementVersion(version); 
    } 
    */ 

}

示例用法

void Main() 
{ 
    Version myVersion = new Version ("1.2.3.4"); 
    myVersion = myVersion.IncrementRevision(); 
    Console.WriteLine(myVersion); //1.2.3.5 
    myVersion = myVersion.IncrementMinor(); 
    Console.WriteLine(myVersion); //1.3.0.0 
}

來源

2017-11-24 12:30:48 JohnLBevan

在C＃代碼中增加版本號

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