Streamwriter not writing

[deviousdexter]

HI

i am trying to save my information to a file, i have looked at various examples which say the following should work

Stream myStream;
            SaveFileDialog saveFileDialog1 = new SaveFileDialog();

            saveFileDialog1.Filter = "txt files (*.txt)|*.txt|All files (*.*)|*.*";
            saveFileDialog1.FilterIndex = 1;
            saveFileDialog1.RestoreDirectory = true;

            if (saveFileDialog1.ShowDialog() == DialogResult.OK)
            {
                if ((myStream = saveFileDialog1.OpenFile()) != null)
                {
                    try
                    {
                       StreamWriter wText = new StreamWriter(myStream);

                        wText.Write("Test Text");
                        
                                                    
                        // Code to write the stream goes here.
                    }
                    catch (Exception ex)
                    {
                        MessageBox.Show("Error: Could not read file from disk. Original error: " + ex.Message);
                    }

                        myStream.Close();
                }
            }

i pass the filename i need throught the savedialog box, and have tried changing

StreamWriter wText = new StreamWriter(myStream);
to
StreamWriter wText = new StreamWriter(saveFileDialog1.Filename); but it throughs an exception as the stream is already open

i have tried changing the wText.Write to wText.WriteLine but that didnt help.

this creates the file ok but the file is empty - i.e. my "Test Text" is not written to the created file.

am i missing something here or should this work?

i eventually need to write out a List<> to this file and be able to read it back in again.
im guessing i am going to have to delimit the file in some way for when i read it back in as my List<> contents will be varying length ?

for the moment if i can just get it to put that text in the file i can move forward on testing the rest.

many thanks

[valaris]

Yes you will need a delimiter.

            SaveFileDialog sd = new SaveFileDialog();
            sd.ShowDialog();


            StreamWriter sw = new StreamWriter(sd.OpenFile());

            sw.Write("Hello");

            sw.Close();

[deviousdexter]

OK sorry have got it sorted.

its needed a

wText.Flush();

after the wText.Write("Test Text");

cant believe how many articles i looked at that did not have this line

[matsp]

OK sorry have got it sorted.

its needed a

wText.Flush();

after the wText.Write("Test Text");

cant believe how many articles i looked at that did not have this line

Surely if you close the stream, that should flush it too...

--
Mats

[deviousdexter]

well it appears to be writing properly now with the flush and wasnt without it so i dont know

[matsp]

well it appears to be writing properly now with the flush and wasnt without it so i dont know

But at least the code you have posted above, doesn't actually close the wText stream.

--
Mats

[deviousdexter]

ahh thanks Mat - i see your point - iam closing the "myStream" but not the "wText" stream. ill try it that way without the flush and see how i go.

thanks for drawing my attention to that fact.

EDIT: tried and working