How to save multiple exception in a single txt file?

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C#

FileStream fs1 = new FileStream("D:\\Error.txt", FileMode.OpenOrCreate,
 FileAccess.Write);
StreamWriter writer = new StreamWriter(fs1);
 // If file exists, text will be appended ; otherwise a new file will be created
writer.Write(string.Format("Message: {0}<br />{1}StackTrace :{2}{1}Date :{3}{1}-----------------------------------------------------------------------------{1}",
 ex.Message, Environment.NewLine, ex.StackTrace, DateTime.Now.ToString()));
  writer.Close();

//this code segment read data from the file.
 FileStream fs2 = new FileStream("D:\\Error.txt", FileMode.OpenOrCreate,
 FileAccess.Read);
 StreamReader reader = new StreamReader(fs2);
 reader.Close();

Here my code, save the exception with updated last exception..how to save multiple exceptions

C#

Posted 23-Jan-14 2:31am

Siva Hyderabad

Updated 23-Jan-14 2:41am

v2

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2 solutions

Solution 2

try this

C#

string path ="D:\\Error.txt";
           File.AppendAllLines(path , new string[] { string.Format("Message: {0}<br />{1}StackTrace :{2}{1}Date :{3}{1}-----------------------------------------------------------------------------{1}",
          ex.Message, Environment.NewLine, ex.StackTrace, DateTime.Now.ToString()});
        string[] lines =  File.ReadAllLines(path);

use File.AppendAllLines[^]

Posted 23-Jan-14 2:40am

Karthik_Mahalingam

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OriginalGriff · Accepted Answer · 2014-01-23T02:35:00

Take off the OpenOrCreate, which discards any previous file content.

By preference, replace the whole FileStream code with File.AppendAllText[^] - it opens teh file, appends the new text, and closes the file again in a single line. And it doesn't leave a FileStream object (fs1) sitting there undisposed.

Use File.ReadAllText as well instead of separate streams there as well.