Check Path Format


My ASP.NET (c#) pulls a folder form the web.config file fine.  However i need to check thi sfolder for format etc.

So for example if an administrator enters the folder "C:\temp" i convert it to "C:\\temp\\" as i then add a file to that directory.  Likewise if "C:\\temp\\" is entered i leave it alone or "C:\\temp" i make it "C:\\temp\\"

Is there an easy way of doing this


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Fahad MukhtarDistinguished EngineerCommented:
you can use the @ operator .. with @-quoting, escape sequences are not processed
assuming the variable that contains the web.config value is path then
path += !path.EndsWith(@"\") ? @"\" : "";
It's easy with regular expressions:

            public static string MakeGoodPath(string path)
                  System.Text.RegularExpressions.Regex r = new System.Text.RegularExpressions.Regex(@"[\\]+",System.Text.RegularExpressions.RegexOptions.IgnoreCase);
                  System.Text.StringBuilder newPath = new System.Text.StringBuilder();
                  foreach(string element in r.Split(path))
                  return newPath.ToString();

Above does not check for drive letter and other things. If you would like to allow also using forward slashes "/" you might need only modify splitting regular expression:
System.Text.RegularExpressions.Regex r = new System.Text.RegularExpressions.Regex(@"[\\]+|/+",System.Text.RegularExpressions.RegexOptions.IgnoreCase);

hope it helps :)

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wbcintsolAuthor Commented:
Excellent thanks a lot - it works a treat
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