我在实际命令提示符中的输出如下所示:
Name: My Software
Version: 1.0.1
Installed location: c:\my folder
我正在尝试通过 C# 代码获取此输出
System.Diagnostics.ProcessStartInfo procStartInfo = new System.Diagnostics.ProcessStartInfo("cmd", "/c " + "my command to execute");
// The following commands are needed to redirect the standard output.
// This means that it will be redirected to the Process.StandardOutput StreamReader.
procStartInfo.RedirectStandardOutput = true;
procStartInfo.UseShellExecute = false;
// Do not create the black window.
procStartInfo.CreateNoWindow = true;
// Now we create a process, assign its ProcessStartInfo and start it
System.Diagnostics.Process proc = new System.Diagnostics.Process();
proc.StartInfo = procStartInfo;
proc.Start();
// Get the output into a string
string result = proc.StandardOutput.ReadToEnd();
string[] lines = result.Split(new string[] { System.Environment.NewLine, }, System.StringSplitOptions.None);
foreach (string tmp in lines)
{
if (tmp.Contains("Version"))
{
isAvailable= true;
}
}
我不想只检查版本标签,我想获取版本值并进行比较,例如,如果该值是 1.0.1,我会想要该值并与 2.0.0 进行比较。
我可以使用
indexof
(如result.IndexOf("Version:");
)-但这并不能让我了解版本的价值
任何想法都会有帮助。
您应该使用 和 it's 进行比较。
尝试如下...它将帮助您...
代替
Contains
使用 IndexOf
... 检查单词
if (tmp.IndexOf("Version") != -1)
{
isAvailable = true;
string[] info = tmp.Split(':');
string version = info[1].Trim();
Console.WriteLine(version);
}
string versionText;
var stuff = tmp.Split(":");
if(stuff[0].Trim() == "Version")
{
isAvailable = true;
versionText = stuff[1].Trim();
}
if(versionText == expectedVersionText) // Do something specfic.
您可能想使用正则表达式:
^Version:\s*(.*)$
应与括号内的版本号匹配。
string sought = "Version:";
foreach (string tmp in lines)
{
if (tmp.Contains(sought))
{
int position = tmp.IndexOf(sought) + sought.Length;
string version = tmp.Substring(tmp.IndexOf(sought) + sought.Length);
string[] versionParts = version.Split('.');
VersionCompare(versionParts, new string[]{"2", "0", "0"});
}
}
/// <summary>Returns 0 if the two versions are equal, else a negative number if the first is smaller, or a positive value if the first is larder and the second is smaller.</summary>
private int VersionCompare(string[] left, string[] right)
{
for(int i = 0; i < Math.Min(left.Length, right.Length); ++i)
{
int leftValue = int.Parse(left[i]), rightValue = int.Parse(right[i]);
if(leftValue != rightValue) return leftValue - rightValue;
}
return left.Length - right.Length;
}