Question

如何使用Regex查找最新版本号？例如

3.0.0.0＆amp; 3.1.0.0

4.0.1.0＆amp; 4.0.1.2

问候

庵埠

Answer 1

为什么要使用正则表达式？他们没有进行比较。但是，System.Version不仅会解析字符串，还支持比较：

// Use your favorite comparison operator
var current = new Version("4.0.1.2");
var found = new Version("4.0.1.0");
if (found > current)
{
    Console.WriteLine("Upgrade needed to {0} from {1}", found, current);
}
else
{
    Console.WriteLine("No upgraded needed from {0}", current);
}

或者如果你在枚举中有它们，它可以很好地与LINQ一起使用：

var versions = new [] { "3.0.0.0", "3.1.0.0", "4.0.1.0", "4.0.1.2" };
foreach (var version in versions.Select(Version.Parse)
                                .OrderByDescending(v => v))
{
    Console.WriteLine("{0}", version);
}

// Group them by Major Version first, then sort
foreach (var major in versions.Select(Version.Parse)
                              .GroupBy(v => v.Major)
                              .OrderByDescending(g => g.Key))
{
    Console.WriteLine("{0}: {1}",
                      major.Key,
                      String.Join(", ", major.OrderByDescending(v => v)));
}

Answer 2

试试这个

static class Program

{

static void Main()

{

string v1 = "1.23.56.1487";
string v2 = "1.24.55.487";

var version1 = new Version(v1);
var version2 = new Version(v2);

 var result = version1.CompareTo(version2);
    if (result > 0)
        Console.WriteLine("version1 is greater");
    else if (result < 0)
        Console.WriteLine("version2 is greater");
    else
        Console.WriteLine("versions are equal");
    return;

}

}

Answer 3

好的版本号只是一个数字..比较3.0.0.0＆amp; 3.1.0.0就像比较3000和3100最简单的那样：

int v1 = 3000;
int v2 = 3100;

if (v2 > v1) { my routine; }

使用正则表达式比较两个软件版本号

3 个答案: