data writing from multiple controls in same file

ta mu

14y3.1k

dear i have this code

StreamWriter stname = new StreamWriter("d:\\abc.text");
            string text = t11.Text;
            stname.WriteLine(text);
            stname.Close();

            StreamWriter stno = new StreamWriter("d:\\abc.text");
            string no = lpnu1.Text;
            stno.WriteLine(no);
            stno.Close();

but in output file only no is written there is no name .but if i remove stno streamwriter then it writes name.
how i can write both name and no in same file.both these are on button click event. i not know much c#.

6 Replies

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Vulpes14y ago
Accepted answer
Taking the second problem first, you need to always specify true as the second argument to the StreamWriter constructor. This will create the file if it doesn't already exist or append to it if it does exist.

To deal with that and the first problem, make the highlighted changes as follows:

private void pt_Click(object sender, EventArgs e)
{
StreamWriter date = new StreamWriter("d:\\abc.text", true);
string dates = Convert.ToString(dp1.Value) + " ";
date.Write(dates);
date.Close();

StreamWriter stno = new StreamWriter("d:\\abc.text",true);
string no = lpnu1.Text + " ";
stno.Write(no);
stno.Close();

StreamWriter stname = new StreamWriter("d:\\abc.text", true);
string text = t11.Text + " ";
stname.WriteLine(text); // make sure next entries will start on a new line
stname.Close();
// button1.Hide();
// pt.Hide();
MessageBox.Show("data is printed");
}
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Vulpes14y ago
To print a windows form you first need to capture the image of the form from the desktop and then print that.

There's some code here on MSDN which shows how to do this:

http://msdn.microsoft.com/en-us/library/6he9hz8c.aspx

To allow specifically for A4 paper and to catch the exception if something goes wrong when attempting to print, you'll need to change the printButton_Click handler as follows:

void printButton_Click(object sender, EventArgs e)
{
try
{
CaptureScreen();
PaperSize ps = new PaperSize();
ps.RawKind = (int)PaperKind.A4;
printDocument1.DefaultPageSettings.PaperSize = ps;
printDocument1.Print();
}
catch(Exception ex)
{
MessageBox.Show(ex.Message);
}
}
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ta mu14y ago
finally know i want to print the form(form1) but explicitly means without apearing
a dialog. when print button is pressed a printout comes out of printer.
but no printer is installed with my pc. exception handling for printer is necessery..
i want to print of size a4
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ta mu14y ago
thanks dear because its my first application therefor i m questioning for such simple things.
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ta mu14y ago
1) thanks dear but know i want to frormate text as in output file dta is in formate
datenoname means no space between them but i want ( date no name) code is again

private void pt_Click(object sender, EventArgs e)
        {
            StreamWriter date = new StreamWriter("d:\\abc.text" );
            string dates = Convert.ToString(dp1.Value);
            date.Write(dates);
            date.Close();


            StreamWriter stno = new StreamWriter("d:\\abc.text",true);
            string no = lpnu1.Text;
            stno.Write(no);
            stno.Close();

            StreamWriter stname = new StreamWriter("d:\\abc.text", true);
            string text = t11.Text;
            stname.Write(text);
            stname.Close();
                // button1.Hide();
                // pt.Hide();
            MessageBox.Show("data is printed");
        }

sesond problem is when i close aplication my data is in file but when run it again
and enter data my old data get lost but i whant evry time whenever i enter data
all data remain in file.
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Vulpes14y ago
Change this line:

StreamWriter stno = new StreamWriter("d:\\abc.text");

to:

StreamWriter stno = new StreamWriter("d:\\abc.text", true);

The StreamWriter will now append to the file rather than overwriting it.
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