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POCan I prevent a StreamReader from locking a text file whilst it is in use?
 

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  1. POCan I prevent a StreamReader from locking a text file whilst it is in use?
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    <p>The StreamReader locks a text file whilst it is reading it.<br> Can I force the StreamReader to work in a "read-only" or "non locking" mode?</p> <p>My workaround would be to copy the file to a temp location and read it from there but I would prefer to use the StreamReader directly if possible. Any alternative suggetions?</p> <p>Background:<br> I've written a small app to get some stats out of a log file. This file is constantly being updating (several times a second) by an outside program lets call AAXXYY. </p> <p>Reviewing the output suggests that my app may be locking the file and preventing AAXXYY from writing. </p> <p>This is what I'm doing</p> <pre><code> private void btnGetStats_Click(object sender, EventArgs e) { int countStarts = 0; int countEnds = 0; IList&lt;string&gt; sessions = new List&lt;string&gt;(); using(StreamReader stRead = new StreamReader(openFileDialog1.FileName,Encoding.Unicode)) { while(!stRead.EndOfStream) { string line = stRead.ReadLine(); if(line.Contains("Session start")) { countStarts++; sessions.Add(line.Substring(line.IndexOf("["), line.LastIndexOf("]") - line.IndexOf("["))); } if (line.Contains("Session end")) { countEnds++; sessions.Remove(line.Substring(line.IndexOf("["), line.LastIndexOf("]") - line.IndexOf("["))); } } } txtStarts.Text = countStarts.ToString(); txtEnds.Text = countEnds.ToString(); txtDifference.Text = (countStarts - countEnds).ToString(); listBox1.DataSource = sessions; } </code></pre>
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