Re: Create .txt file - C# Discussion Boards

16-Feb-05 23:43

Hello,

Can anyone help me. I have 3 text boxes in my form. I wish to create .txt document which contain values(each one in new row) collected from these 3 text boxes.
I am beginner, so please help me

Stefan Troschuetz17-Feb-05 0:01

17-Feb-05 0:01

using (StreamWriter sw = new StreamWriter("File.txt")) 
{
  sw.WriteLine(textBox1.Text);
  sw.WriteLine(textBox2.Text);
  sw.WriteLine(textBox3.Text);
}

BH Serpa17-Feb-05 0:42

17-Feb-05 0:42

thx, but i don't know where to put that code

Stefan Troschuetz17-Feb-05 1:01

17-Feb-05 1:01

It depends. When do you want to save the values of these textboxes?

BH Serpa17-Feb-05 19:50

17-Feb-05 19:50

Stefan,

I want to save text and numbers which I put in text box in "data.txt" file in some directory.When I put that values in taext box and press button I want that vales to be written in that particular file(so I can run fortran file which is dependent on these values in data.txt). Also, can I somehow restrict text field to except just text or just numbers?

thank You very much Stefan for efford

Stefan Troschuetz17-Feb-05 23:24

17-Feb-05 23:24

alancatovic wrote:
and press button I want that vales to be written

You have to define an event handler for the Click event of that Button.
If your using Visual Studio select the button in the Form designer, go to the properties window, click on the yellow bolt to display available events of this button and double-click on Click. The designer creates the event handler, subscribes it and jumps to the event handler in the code file. Into the event handler you put the code, I gave you yesterday.
If you don't use an IDE, you have to insert the following code on your own:

// Put in constructor of form
this.button1.Click += new EventHandler(this.button1_Click);
// Put inside form definition
void button1_Click(object sender, EventArgs e)
{
  // Here goes the code to save the file.
}

alancatovic wrote:
can I somehow restrict text field to except just text or just numbers

You can. Subscribe an event handler for the KeyPress event of each TextBox and insert the following code.

void textBoxXX_KeyPress(object sender, KeyPressEventArgs e)
{
  // Check whether pressed character is number or not, and eventually cancel the event.
  if (e.KeyChar.IsNumber)// if (!e.KeyChar.IsNumber)
    e.Handled = true;
}

18-Feb-05 0:23

'System.EventArgs' does not contain a definition for 'KeyChar' is showing in the error panel when I put the code

if (e.KeyChar.IsNumber)// if (!e.KeyChar.IsNumber)

e.Handled = true;

under the textbox

what now?

BH Serpa18-Feb-05 0:53

18-Feb-05 0:53

also, this happens

The type or namespace name 'StreamWriter' could not be found (are you missing a using directive or an assembly reference?)

and

The type or namespace name 'sw' could not be found (are you missing a using directive or an assembly reference?)

when I try to put this code

using (StreamWriter sw = new StreamWriter("file.txt"))

{

sw.WriteLine(textBox4.Text);

sw.WriteLine(textBox5.Text);

sw.WriteLine(textBox6.Text);
}

under my button.

Can my program be cured :=))

Stefan Troschuetz18-Feb-05 1:06

18-Feb-05 1:06

Put using System.IO; at the beginning of your code file. There should already be some similar statements e.g. using System.Windows.Forms;.
The using directive permits the use of types in a namespace without having to specify the namespace i.e. you can simply write StreamWriter instead of System.IO.StreamWriter.

Stefan Troschuetz18-Feb-05 0:58

18-Feb-05 0:58

No it doesn't, but fortunately the KeyPressEventArgs object that gets passed to an event handler for KeyPress event contains this property.

void textBoxXX_KeyPress(object sender, KeyPressEventArgs e)
{
  // Check whether pressed character is number or not, and eventually cancel the event.
  if (e.KeyChar.IsNumber)// if (!e.KeyChar.IsNumber)
    e.Handled = true;
}

BH Serpa18-Feb-05 1:16