在C＃代码中增加版本号

我在数据库中维护文档版本。可以说我想更新或增加版本号。我试过这个，但它显示我的属性是只读？在C＃代码中增加版本号

string _versionDB = "1.0.0.0" 

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

请任何人都能详细说明增加版本号的正确方法吗？

来源

2014-09-22 Hammad Bukhari

由于http://msdn.microsoft.com/en-us/library/system.version（V = vs.110的[System.Version]（属性）.aspx）是只读的。为什么不能实现你自己的功能来分配值 – 2014-09-22 07:13:22

请你可以在这里放一些示例代码我如何实现我自己的功能？ – 2014-09-22 07:16:08

这取决于你想要的格式。最简单的就是将该值存储为int，然后将其增加。如果你真的想要像上面显示的那样，那么你需要拆分字符串，将值转换为数字，增加一个或多个，然后将它们加回到字符串 – 2014-09-22 07:27:01

我知道这是有点老了，但为寻找如何做到这一点，这可能会帮助：

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);

返回字符串根据您的变量设置回保存到数据库中（假设名称）：

_versionDB = newMajorVersion.ToString();

来源

2015-05-06 12:40:12 Calle

您可以创建一个扩展方法为您执行添加。仍然需要自定义代码;但如果你在很多地方这样做，有这样一个辅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 
}

来源

2017-11-24 12:30:48 JohnLBevan

在C＃代码中增加版本号

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