How to speed up reading from a file? (ReadAllText funcionality)

[Guest]

I would like to create a notepad-type appropriate text editor using CF.

I tried to open a file and read its content to a textbox using StreamReader:

try
{
using (StreamReader sr = File.OpenText(filename))
{
string line;

while ((line = sr.ReadLine()) != null)
{
text += line;
}

sr.Close();
}
}
catch (Exception e)
{
MessageBox.Show(e.Message);
}

theTextBox.Text = text;

Reading a 162kB long text file needs more then one minute. It is too slow.
ReadAllText method is not supported in CF (and not supported in OpenNetCF).

Is there a way to speed up the code snippet above?

Please help!

Frankie

 

[Jan Obrestad]

How about using the ReadToEnd() method on the StreamReader object?

The reason what you're doing is slow, might be that you're creating a
new string object for each line of the file.

 

[Guest]

Using a StringBuilder, not a string for your text variable would probably
change the results by an order of magnitude or so.

-Chris

 

[Guest]

Thank you very much. It is perfect!

Frankie

How about using the ReadToEnd() method on the StreamReader object?

The reason what you're doing is slow, might be that you're creating a
new string object for each line of the file.