CODEWITHSUNDEEP
c#filefile-io
Anyname Donotcare
Anyname Donotcare

Reputation: 11423

The process cannot access the file 'XXX' because it is being used by another process

I get the following exception 

Error Message:The process cannot access the file '....\folder\r.js' because it is being used by another process.    at System.IO.__Error.WinIOError(Int32 errorCode, String maybeFullPath)
   at System.IO.FileStream.Init(String path, FileMode mode, FileAccess access, Int32 rights, Boolean useRights, FileShare share, Int32 bufferSize, FileOptions options, SECURITY_ATTRIBUTES secAttrs, String msgPath, Boolean bFromProxy)
   at System.IO.FileStream..ctor(String path, FileMode mode, FileAccess access, FileShare share, Int32 bufferSize, FileOptions options)
   at System.IO.StreamReader..ctor(String path, Encoding encoding, Boolean detectEncodingFromByteOrderMarks, Int32 bufferSize)
   at System.IO.StreamReader..ctor(String path, Encoding encoding)
   at System.IO.File.ReadAllLines(String path, Encoding encoding)
   at System.IO.File.ReadAllLines(String path)
   at PrepareEventDates()

My method :

protected HashSet<string> PrepareEventDates()
{
    HashSet<string> str = new HashSet<string>();
    WebClient webclient = new WebClient();
    string path = System.Configuration.ConfigurationSettings.AppSettings.Get("sss").ToString();
    webclient.DownloadFile(path, Server.MapPath("r.js"));
    String[] JSLines = System.IO.File.ReadAllLines(Server.MapPath("folder/r.js"));
    String strDate = string.Empty;
    string toolTip = string.Empty;
    for (int i = 0; i < JSLines.Length; i++)
    {
        string result = JSLines[i];
        int methodBodyStart = JSLines[i].IndexOf("DefineEvent(");
        if (methodBodyStart >= 0)
        {
            methodBodyStart += "DefineEvent(".Length;
            int methodBodyEnd = JSLines[i].LastIndexOf(')');
            if (methodBodyEnd >= 0)
            {
                string methodBody = JSLines[i].Substring(methodBodyStart, methodBodyEnd - methodBodyStart);
                var twoParams = methodBody.Split(',')
                   .Select(x => x.Trim(' ', '\'')).Take(2);
                result = string.Join("|", twoParams.ToArray());
            }
        }
        str.Add(result);
    }

    return str;
}

Upvotes: 1

Views: 5508

Answers (1)

Jo&#227;o Pinho
Jo&#227;o Pinho

Reputation: 3775

The problem is related with the FileShare option, as you can see by your StackTrace error, the method you use to read the lines, uses a FileStream object.

I suggest your to read the file, but do the instantiation of the FileStream yourself:

string contents = string.Empty;

using(FileStream fs = new FileStream("", FileMode.Open, FileAccess.Read, FileShare.ReadWrite))
    using (StreamReader sr = new StreamReader(fs))
       contents = sr.ReadToEnd();

Upvotes: 2

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