[C#] Writing data to a .dat file

September 24, 2005

Hi!

I have a window application.

User makes some selection from different combo boxes, then when hitted the "ADD TO CART" button, the data selected will be copied to some labels next to it.

But now, i need to transfer/copy all that data from the labels to a file named: computer.dat

How do i do that? I'm really having problems with that.

I have this there:

void storeInFile(Part *d)
  	{
    FileStream file = new FileStream("computer.dat", FileMode.OpenOrCreate, FileAccess.Read);

    for (int i=0; i&lt;d-&gt;dataCount; i++)
    {
    	file &lt;&lt; d-&gt;pb[i].processor &lt;&lt;"\n\n";
    	file &lt;&lt; d-&gt;pb[i].memory &lt;&lt;"\n"&lt;&lt; endl; 
    	file &lt;&lt; d-&gt;pb[i].harddrive &lt;&lt;"\n"&lt;&lt; endl; 
    	file &lt;&lt; d-&gt;pb[i].cdrom &lt;&lt;"\n"&lt;&lt; endl;
    	file &lt;&lt; d-&gt;pb[i].floppydrive &lt;&lt;"\n"&lt;&lt; endl; 
    	file &lt;&lt; d-&gt;pb[i].keyboard &lt;&lt;"\n"&lt;&lt; endl; 
    	file &lt;&lt; d-&gt;pb[i].monitor &lt;&lt;"\n"&lt;&lt; endl; 
    	file &lt;&lt; d-&gt;pb[i].mouse &lt;&lt;"\n"&lt;&lt; endl; 
    }
    file.Close();	// close computer.dat
  	}

but im not sure if that's correct.

Please help me..:)

Thanks,

22,771 · September 24, 2005

benjeeeboy said:
I would assume that FileAccess.Read is wrong. Try FileAccess.Write or something like that.

586574010[/snapback]

thats right :pinch:

1,098 · September 24, 2005

I would assume that FileAccess.Read is wrong. Try FileAccess.Write or something like that.

September 24, 2005

OK!

Did it!

But now i get 27 errors.

-Pointers may only be used in an unsafe context

-Only assingemtn, call, increment, decrement, and object expresions can be used as a statement

-'WindowApplication1.Form1.Part' does not contain a definition for 'pb'

And those 3 errors keep repeating like 4 more times in the Task List.

September 24, 2005

well, that looks like c++ and NOT C#

you are writing in c++, my confused friend

September 24, 2005

Yes i know, i kinda copy and pasted a code made some time ago in C++ and was tring to fix it and put it to work into C#, but i think i failed at it.

Can somebody please help me there? :cry:

3,126 · September 24, 2005

You need to use writeline() in C#.

http://www.c-sharpcorner.com/1/filestream.asp

Check that out.

8,405 · September 24, 2005

marie said:
Yes i know, i kinda copy and pasted a code made some time ago in C++ and was tring to fix it and put it to work into C#, but i think i failed at it.
Can somebody please help me there? :cry:

586574180[/snapback]

take a good long look into "FileStream" on the MSDN. hint "file <<" :no:

get rid of the pointer *d and try something else, dont worry (i did the same mistakes like that before)

September 24, 2005

Okay, thanks for the site.

But hmmm.. what i need to write is what's in the labels.

How do i do that?

8,405 · September 24, 2005

marie said:
Okay, thanks for the site.
But hmmm.. what i need to write is what's in the labels.

How do i do that?

586574212[/snapback]

it should be

comboBox1.SelectedItem.ToString();

where "comboBox1" is the name of your ....well combobox

opps. you said label

label1.Text.ToString()

"label1" name of your label

Edited September 24, 2005 by dolimite35

September 24, 2005

OK i write that label1.Text.toString();

but... where?

will that copy each label that's on the combo box into a new file?

Sorry for all the questions, but im kinda new at this.

1,747 · September 24, 2005

You could try something like this:

 ? ? ? ?void storeInFile()
 ? ? ? ?{
 ? ? ? ? ? ?// create a file stream, for "computer.dat"
 ? ? ? ? ? ?FileStream fs = new FileStream("computer.dat", FileMode.CreateNew, FileAccess.ReadWrite);
 ? ? ? ? ? ?// create a stream writer
 ? ? ? ? ? ?StreamWriter sw = new StreamWriter(fs);

 ? ? ? ? ? ?//write to file (buffer), where label1 and label2 are your labels.
 ? ? ? ? ? ?sw.Write(label1.Text.ToString() + Environment.NewLine);
 ? ? ? ? ? ?sw.Write(label2.Text.ToString() + Environment.NewLine);

 ? ? ? ? ? ?// flush buffer (so the text really goes into the file)
 ? ? ? ? ? ?sw.Flush();
 ? ? ? ? ? ?// close stream writer and file
 ? ? ? ? ? ?sw.Close();
 ? ? ? ? ? ?fs.Close();
 ? ? ? ?}

Edited September 24, 2005 by BigCheese

September 24, 2005

Whoa!

That really makes sense.

Now it is givng me this 2 problems.

- 'WindowsApplication.Form1.label1' denotes a 'field' where a 'class' was expected

- 'WindowsApplication.Form1.label2' denotes a 'field' where a 'class' was expected

5,421 · September 24, 2005

BigCheese said:
You could try something like this:

586574430[/snapback]

The .ToSting()'s are a waste.

As for the 'label1' and 'label2' things, you have to have something set up wrong. Can we see the form designer code too?

3,230 · September 25, 2005

Doesn't the Close() do a flush as well, or is it needed to flush the stream manually? And as stated above, ToStrings() on label1/2.Text is really a waste, as the Text property is string.

5,421 · September 25, 2005

lnatan25 said:
Doesn't the Close() do a flush as well, or is it needed to flush the stream manually? And as stated above, ToStrings() on label1/2.Text is really a waste, as the Text property is string.

586574669[/snapback]

Yeah. Flush() is useless immediately before Close().

Close() calls Dispose(), which calls Flush().

September 25, 2005

OK, So this is my code:

using System;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;
using System.Data;
using System.IO;



namespace WindowsApplication1
{
	/// &lt;summary&gt;
	/// Summary description for Form1.
	/// &lt;/summary&gt;
	public class Form1 : System.Windows.Forms.Form
	{
  private System.Windows.Forms.ComboBox comboBox1;
  private System.Windows.Forms.ComboBox comboBox2;
  private System.Windows.Forms.ComboBox comboBox3;
  private System.Windows.Forms.ComboBox comboBox4;
  private System.Windows.Forms.ComboBox comboBox5;
  private System.Windows.Forms.ComboBox comboBox6;
  private System.Windows.Forms.ComboBox comboBox7;
  private System.Windows.Forms.ComboBox comboBox8;
  private System.Windows.Forms.Label label1;
  private System.Windows.Forms.Label label2;
  private System.Windows.Forms.TextBox textBox1;
  private System.Windows.Forms.Label label3;
  private System.Windows.Forms.TextBox textBox2;
  private System.Windows.Forms.PictureBox pictureBox1;
  private System.Windows.Forms.Button button1;
  private System.Windows.Forms.GroupBox groupBox1;
  private System.Windows.Forms.Label label4;
  private System.Windows.Forms.Label label5;
  private System.Windows.Forms.Label label6;
  private System.Windows.Forms.Label label7;
  private System.Windows.Forms.Label label8;
  private System.Windows.Forms.Label label9;
  private System.Windows.Forms.Label label10;
  private System.Windows.Forms.Label label11;
  private System.Windows.Forms.Label label12;
  private System.Windows.Forms.Label label13;
  private System.Windows.Forms.TextBox textBox3;
  /// &lt;summary&gt;
  /// Required designer variable.
  /// &lt;/summary&gt;
  private System.ComponentModel.Container components = null;


  public Form1()
  {
  	//
  	// Required for Windows Form Designer support
  	//
  	InitializeComponent();

  	//
  	// TODO: Add any constructor code after InitializeComponent call
  	//
  }

  /// &lt;summary&gt;
  /// Clean up any resources being used.
  /// &lt;/summary&gt;
  protected override void Dispose( bool disposing )
  {
  	if( disposing )
  	{
    if (components != null) 
    {
    	components.Dispose();
    }
  	}
  	base.Dispose( disposing );
  }

  #region Windows Form Designer generated code
  /// &lt;summary&gt;
  /// Required method for Designer support - do not modify
  /// the contents of this method with the code editor.
  /// &lt;/summary&gt;
  private void InitializeComponent()
  {
  	System.Resources.ResourceManager resources = new System.Resources.ResourceManager(typeof(Form1));
  	this.comboBox1 = new System.Windows.Forms.ComboBox();
  	this.comboBox2 = new System.Windows.Forms.ComboBox();
  	this.comboBox3 = new System.Windows.Forms.ComboBox();
  	this.comboBox4 = new System.Windows.Forms.ComboBox();
  	this.comboBox5 = new System.Windows.Forms.ComboBox();
  	this.comboBox6 = new System.Windows.Forms.ComboBox();
  	this.comboBox7 = new System.Windows.Forms.ComboBox();
  	this.comboBox8 = new System.Windows.Forms.ComboBox();
  	this.label1 = new System.Windows.Forms.Label();
  	this.label2 = new System.Windows.Forms.Label();
  	this.textBox1 = new System.Windows.Forms.TextBox();
  	this.label3 = new System.Windows.Forms.Label();
  	this.textBox2 = new System.Windows.Forms.TextBox();
  	this.pictureBox1 = new System.Windows.Forms.PictureBox();
  	this.button1 = new System.Windows.Forms.Button();
  	this.groupBox1 = new System.Windows.Forms.GroupBox();
  	this.label12 = new System.Windows.Forms.Label();
  	this.label11 = new System.Windows.Forms.Label();
  	this.label10 = new System.Windows.Forms.Label();
  	this.label9 = new System.Windows.Forms.Label();
  	this.label8 = new System.Windows.Forms.Label();
  	this.label7 = new System.Windows.Forms.Label();
  	this.label6 = new System.Windows.Forms.Label();
  	this.label5 = new System.Windows.Forms.Label();
  	this.label4 = new System.Windows.Forms.Label();
  	this.label13 = new System.Windows.Forms.Label();
  	this.textBox3 = new System.Windows.Forms.TextBox();
  	this.groupBox1.SuspendLayout();
  	this.SuspendLayout();
  	// 
  	// comboBox1
  	// 
  	this.comboBox1.DropDownWidth = 320;
  	this.comboBox1.Items.AddRange(new object[] {
                 "Intel? Pentium? 4 Processor (2.80GHz, 533 FSB) [add $30]",
                 "Intel? Pentium? 4 Processor (3GHz, 800 FSB) [add $50]",
                 "Intel? Pentium? D 820 (2.8GHz, 800MHz FSB) [add $150]",
                 "Intel? Pentium? D 840 (3.2GHz, 800MHz FSB) [add $200]"});
  	this.comboBox1.Location = new System.Drawing.Point(24, 144);
  	this.comboBox1.Name = "comboBox1";
  	this.comboBox1.Size = new System.Drawing.Size(320, 21);
  	this.comboBox1.TabIndex = 0;
  	this.comboBox1.Text = "Select Processor Desired";
  	// 
  	// comboBox2
  	// 
  	this.comboBox2.DropDownWidth = 300;
  	this.comboBox2.Items.AddRange(new object[] {
                 "512MB Dual Channel DDR SDRAM at 400MHz [add $39]",
                 "1GB Dual Channel DDR SDRAM at 533MHz [add $60]",
                 "2GB Dual Channel DDR2 SDRAM at 533MHz [add $220]",
                 "4GB Dual Channel DDR2 SDRAM at 533MHz [add $500]"});
  	this.comboBox2.Location = new System.Drawing.Point(24, 192);
  	this.comboBox2.Name = "comboBox2";
  	this.comboBox2.Size = new System.Drawing.Size(320, 21);
  	this.comboBox2.TabIndex = 1;
  	this.comboBox2.Text = "Select Memory Desired";
  	// 
  	// comboBox3
  	// 
  	this.comboBox3.DropDownWidth = 250;
  	this.comboBox3.Items.AddRange(new object[] {
                 "80GB Serial ATA (7200rpm) (80S) [add $39]",
                 "160GB Serial ATA (7200rpm) (160S) [add $49]",
                 "250GB Serial ATA (7200rpm) (250S) [add $100]",
                 "400GB Serial ATA (7200rpm) (400S) [add $310]"});
  	this.comboBox3.Location = new System.Drawing.Point(24, 248);
  	this.comboBox3.Name = "comboBox3";
  	this.comboBox3.Size = new System.Drawing.Size(320, 21);
  	this.comboBox3.TabIndex = 2;
  	this.comboBox3.Text = "Select Hard Drive Desired";
  	// 
  	// comboBox4
  	// 
  	this.comboBox4.DropDownWidth = 325;
  	this.comboBox4.Items.AddRange(new object[] {
                 "16X CD/DVD burner (DVD+/-RW) [add $20]",
                 "16x DVD-ROM Drive + 16x DVD+/-RW  [add $30]",
                 "24X CD-RW / DVD Combo Drive [add $40]",
                 "8X CD/DVD burner (DVD+/-RW) [add $50]"});
  	this.comboBox4.Location = new System.Drawing.Point(24, 304);
  	this.comboBox4.Name = "comboBox4";
  	this.comboBox4.Size = new System.Drawing.Size(320, 21);
  	this.comboBox4.TabIndex = 3;
  	this.comboBox4.Text = "Select CD-Rom Desired";
  	// 
  	// comboBox5
  	// 
  	this.comboBox5.DropDownWidth = 200;
  	this.comboBox5.Items.AddRange(new object[] {
                 "3.5 inches Floppy Drive 1.44MB [add $30]",
                 "None [add $0]"});
  	this.comboBox5.Location = new System.Drawing.Point(24, 360);
  	this.comboBox5.MaxDropDownItems = 5;
  	this.comboBox5.Name = "comboBox5";
  	this.comboBox5.Size = new System.Drawing.Size(320, 21);
  	this.comboBox5.TabIndex = 4;
  	this.comboBox5.Text = "Select Floppy Drive Desired";
  	// 
  	// comboBox6
  	// 
  	this.comboBox6.Items.AddRange(new object[] {
                 "USB Keyboard  [add $20] ",
                 "Wireless Keyboard [add $50]"});
  	this.comboBox6.Location = new System.Drawing.Point(24, 416);
  	this.comboBox6.Name = "comboBox6";
  	this.comboBox6.Size = new System.Drawing.Size(320, 21);
  	this.comboBox6.TabIndex = 5;
  	this.comboBox6.Text = "Select Keyboard Desired";
  	// 
  	// comboBox7
  	// 
  	this.comboBox7.DropDownWidth = 245;
  	this.comboBox7.Items.AddRange(new object[] {
                 "15 inch E153FP Analog Flat Panel [add $100] ",
                 "17 inch E173FP Analog Flat Panel [add $160]",
                 "20 inch UltraSharp? Widescreen Digital Flat Panel [add $270]",
                 "No Monitor [add $0]"});
  	this.comboBox7.Location = new System.Drawing.Point(24, 472);
  	this.comboBox7.Name = "comboBox7";
  	this.comboBox7.Size = new System.Drawing.Size(320, 21);
  	this.comboBox7.TabIndex = 6;
  	this.comboBox7.Text = "Select Monitor Desired";
  	// 
  	// comboBox8
  	// 
  	this.comboBox8.DropDownWidth = 250;
  	this.comboBox8.Items.AddRange(new object[] {
                 "Dell? 2-button USB mouse [add $19] ",
                 "Dell Optical USB Mouse [add $29]",
                 "Logitech? MX? 518 Optical Mouse [add $50]",
                 "No Mouse [add $0]"});
  	this.comboBox8.Location = new System.Drawing.Point(24, 528);
  	this.comboBox8.Name = "comboBox8";
  	this.comboBox8.Size = new System.Drawing.Size(320, 21);
  	this.comboBox8.TabIndex = 7;
  	this.comboBox8.Text = "Select Mouse Desired";
  	// 
  	// label1
  	// 
  	this.label1.Font = new System.Drawing.Font("Edwardianpt ITC", 25F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((System.Byte)(0)));
  	this.label1.Location = new System.Drawing.Point(184, 8);
  	this.label1.Name = "label1";
  	this.label1.Size = new System.Drawing.Size(288, 48);
  	this.label1.TabIndex = 8;
  	this.label1.Text = "Customize Your Computer";
  	// 
  	// label2
  	// 
  	this.label2.Font = new System.Drawing.Font("Microsoft Serif", 8.6F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((System.Byte)(0)));
  	this.label2.Location = new System.Drawing.Point(88, 88);
  	this.label2.Name = "label2";
  	this.label2.Size = new System.Drawing.Size(72, 16);
  	this.label2.TabIndex = 9;
  	this.label2.Text = "First Name";
  	// 
  	// textBox1
  	// 
  	this.textBox1.AcceptsTab = true;
  	this.textBox1.Location = new System.Drawing.Point(168, 88);
  	this.textBox1.Name = "textBox1";
  	this.textBox1.Size = new System.Drawing.Size(120, 20);
  	this.textBox1.TabIndex = 10;
  	this.textBox1.Text = "";
  	// 
  	// label3
  	// 
  	this.label3.Font = new System.Drawing.Font("Microsoft Serif", 8.6F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((System.Byte)(0)));
  	this.label3.Location = new System.Drawing.Point(376, 88);
  	this.label3.Name = "label3";
  	this.label3.Size = new System.Drawing.Size(72, 16);
  	this.label3.TabIndex = 11;
  	this.label3.Text = "Last Name";
  	// 
  	// textBox2
  	// 
  	this.textBox2.AcceptsTab = true;
  	this.textBox2.Location = new System.Drawing.Point(448, 88);
  	this.textBox2.Name = "textBox2";
  	this.textBox2.Size = new System.Drawing.Size(128, 20);
  	this.textBox2.TabIndex = 12;
  	this.textBox2.Text = "";
  	// 
  	// pictureBox1
  	// 
  	this.pictureBox1.Image = ((System.Drawing.Image)(resources.GetObject("pictureBox1.Image
  	this.pictureBox1.Location = new System.Drawing.Point(512, 8);
  	this.pictureBox1.Name = "pictureBox1";
  	this.pictureBox1.Size = new System.Drawing.Size(64, 64);
  	this.pictureBox1.TabIndex = 14;
  	this.pictureBox1.TabStop = false;
  	// 
  	// button1
  	// 
  	this.button1.FlatStyle = System.Windows.Forms.FlatStyle.System;
  	this.button1.ImageAlign = System.Drawing.ContentAlignment.TopCenter;
  	this.button1.Location = new System.Drawing.Point(144, 568);
  	this.button1.Name = "button1";
  	this.button1.Size = new System.Drawing.Size(80, 24);
  	this.button1.TabIndex = 16;
  	this.button1.Text = "Add To Cart";
  	this.button1.Click += new System.EventHandler(this.button1_Click);
  	// 
  	// groupBox1
  	// 
  	this.groupBox1.Controls.Add(this.textBox3);
  	this.groupBox1.Controls.Add(this.label13);
  	this.groupBox1.Controls.Add(this.label12);
  	this.groupBox1.Controls.Add(this.label11);
  	this.groupBox1.Controls.Add(this.label10);
  	this.groupBox1.Controls.Add(this.label9);
  	this.groupBox1.Controls.Add(this.label8);
  	this.groupBox1.Controls.Add(this.label7);
  	this.groupBox1.Controls.Add(this.label6);
  	this.groupBox1.Controls.Add(this.label5);
  	this.groupBox1.Controls.Add(this.label4);
  	this.groupBox1.Location = new System.Drawing.Point(368, 136);
  	this.groupBox1.Name = "groupBox1";
  	this.groupBox1.Size = new System.Drawing.Size(320, 456);
  	this.groupBox1.TabIndex = 17;
  	this.groupBox1.TabStop = false;
  	this.groupBox1.Text = "Items on your Cart";
  	// 
  	// label12
  	// 
  	this.label12.Font = new System.Drawing.Font("Microsoft Serif", 8.9F, System.Drawing.FontStyle.Italic, System.Drawing.GraphicsUnit.Point, ((System.Byte)(0)));
  	this.label12.Location = new System.Drawing.Point(16, 16);
  	this.label12.Name = "label12";
  	this.label12.Size = new System.Drawing.Size(296, 32);
  	this.label12.TabIndex = 8;
  	// 
  	// label11
  	// 
  	this.label11.Location = new System.Drawing.Point(16, 392);
  	this.label11.Name = "label11";
  	this.label11.Size = new System.Drawing.Size(288, 24);
  	this.label11.TabIndex = 7;
  	// 
  	// label10
  	// 
  	this.label10.Location = new System.Drawing.Point(16, 344);
  	this.label10.Name = "label10";
  	this.label10.Size = new System.Drawing.Size(288, 32);
  	this.label10.TabIndex = 6;
  	// 
  	// label9
  	// 
  	this.label9.Location = new System.Drawing.Point(16, 304);
  	this.label9.Name = "label9";
  	this.label9.Size = new System.Drawing.Size(288, 24);
  	this.label9.TabIndex = 5;
  	// 
  	// label8
  	// 
  	this.label8.Location = new System.Drawing.Point(16, 264);
  	this.label8.Name = "label8";
  	this.label8.Size = new System.Drawing.Size(288, 24);
  	this.label8.TabIndex = 4;
  	// 
  	// label7
  	// 
  	this.label7.Location = new System.Drawing.Point(16, 216);
  	this.label7.Name = "label7";
  	this.label7.Size = new System.Drawing.Size(288, 24);
  	this.label7.TabIndex = 3;
  	// 
  	// label6
  	// 
  	this.label6.Location = new System.Drawing.Point(16, 168);
  	this.label6.Name = "label6";
  	this.label6.Size = new System.Drawing.Size(288, 32);
  	this.label6.TabIndex = 2;
  	// 
  	// label5
  	// 
  	this.label5.Location = new System.Drawing.Point(16, 112);
  	this.label5.Name = "label5";
  	this.label5.Size = new System.Drawing.Size(288, 40);
  	this.label5.TabIndex = 1;
  	// 
  	// label4
  	// 
  	this.label4.Location = new System.Drawing.Point(16, 64);
  	this.label4.Name = "label4";
  	this.label4.Size = new System.Drawing.Size(288, 32);
  	this.label4.TabIndex = 0;
  	// 
  	// label13
  	// 
  	this.label13.Location = new System.Drawing.Point(168, 432);
  	this.label13.Name = "label13";
  	this.label13.Size = new System.Drawing.Size(40, 16);
  	this.label13.TabIndex = 9;
  	this.label13.Text = "Total";
  	// 
  	// textBox3
  	// 
  	this.textBox3.Location = new System.Drawing.Point(208, 424);
  	this.textBox3.Name = "textBox3";
  	this.textBox3.TabIndex = 10;
  	this.textBox3.Text = "$";
  	// 
  	// Form1
  	// 
  	this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);
  	this.ClientSize = new System.Drawing.Size(712, 606);
  	this.Controls.Add(this.groupBox1);
  	this.Controls.Add(this.button1);
  	this.Controls.Add(this.pictureBox1);
  	this.Controls.Add(this.textBox2);
  	this.Controls.Add(this.label3);
  	this.Controls.Add(this.textBox1);
  	this.Controls.Add(this.label2);
  	this.Controls.Add(this.label1);
  	this.Controls.Add(this.comboBox8);
  	this.Controls.Add(this.comboBox7);
  	this.Controls.Add(this.comboBox6);
  	this.Controls.Add(this.comboBox5);
  	this.Controls.Add(this.comboBox4);
  	this.Controls.Add(this.comboBox3);
  	this.Controls.Add(this.comboBox2);
  	this.Controls.Add(this.comboBox1);
  	this.Name = "Form1";
  	this.Text = "Form1";
  	this.groupBox1.ResumeLayout(false);
  	this.ResumeLayout(false);

  }
  #endregion

  public class Part
  { // begins class Part
  
  	private
    int hardware;
  	int dataCount;
  	double qty;

  	public
    Part() {} // default constructor
  	void parts_Name(int parts)
  	{
    this.hardware = parts;
  	}

  	void parts_Price(double price)
  	{
    this.qty = price;
  	}

  /*	void storeInFile()
  	{
    FileStream file = new FileStream("computer.dat", FileMode.OpenOrCreate, FileAccess.Write);

    
    for (int i=0; i&lt;d-&gt;dataCount; i++)
    {
    	file &lt;&lt; d-&gt;pb[i].processor &lt;&lt;"\n\n";
    	file &lt;&lt; d-&gt;pb[i].memory &lt;&lt;"\n"&lt;&lt; endl; 
    	file &lt;&lt; d-&gt;pb[i].harddrive &lt;&lt;"\n"&lt;&lt; endl; 
    	file &lt;&lt; d-&gt;pb[i].cdrom &lt;&lt;"\n"&lt;&lt; endl;
    	file &lt;&lt; d-&gt;pb[i].floppydrive &lt;&lt;"\n"&lt;&lt; endl; 
    	file &lt;&lt; d-&gt;pb[i].keyboard &lt;&lt;"\n"&lt;&lt; endl; 
    	file &lt;&lt; d-&gt;pb[i].monitor &lt;&lt;"\n"&lt;&lt; endl; 
    	file &lt;&lt; d-&gt;pb[i].mouse &lt;&lt;"\n"&lt;&lt; endl;
    }
    file.Close();	// close computer.dat
  	}
  	*/

  	void storeInFile()
  	{
    // create a file stream, for "computer.dat"
    FileStream fs = new FileStream("computer.dat", FileMode.CreateNew, FileAccess.ReadWrite);
    // create a stream writer
    StreamWriter sw = new StreamWriter(fs, System.Text.Encoding.ASCII);

    //write to file (buffer), where textBox1 is your text box
    sw.Write(label4.Text.ToString() + Environment.NewLine);
    sw.Write(label5.Text.ToString() + Environment.NewLine);
    sw.Write(label6.Text.ToString() + Environment.NewLine);
    sw.Write(label7.Text.ToString() + Environment.NewLine);
    sw.Write(label8.Text.ToString() + Environment.NewLine);
    sw.Write(label9.Text.ToString() + Environment.NewLine);
    sw.Write(label10.Text.ToString() + Environment.NewLine);
    sw.Write(label11.Text.ToString() + Environment.NewLine);

    // flush buffer (so the text really goes into the file)
    sw.Flush();
    // close stream writer and file
    sw.Close();
    fs.Close();
  	}




  } // end class Part

  public class Processor :  Part
  {
            
  }

  public class Memory : Part
  {

  }

  public class HardDrive : Part
  {

  }

  public class CDRom : Part
  {

  }

  public class Floppy : Part
  {

  }

  public class Keyboard : Part
  {

  }

  public class Monitor : Part
  {

  }

  public class Mouse : Part
  {

  }


  


  /// &lt;summary&gt;
  /// The main entry point for the application.
  /// &lt;/summary&gt;
  [STAThread]
  static void Main() 
  {
  	Application.Run(new Form1());
  }



  private void button1_Click(object sender, System.EventArgs e)
  {
  	label12.Text = textBox1.Text += textBox2.Text += ", thanks for selecting us as your preferred brand!";
  	label4.Text = comboBox1.Text;
  	label5.Text = comboBox2.Text;
  	label6.Text = comboBox3.Text;
  	label7.Text = comboBox4.Text;
  	label8.Text = comboBox5.Text;
  	label9.Text = comboBox6.Text;
  	label10.Text = comboBox7.Text;
  	label11.Text = comboBox8.Text;

  } // end button1_Click


	}
}

September 25, 2005

This is why I love unmanaged C++, no bull**** :)

9,965 · September 25, 2005

Does that work?

And yeah, that code that you have commented out is not C#...

September 25, 2005

Why it isnt C#?

What is wrong?

It is working, what i still need it to do, is safe the selections into a .dat file and calculate the total.

4,657 · September 25, 2005

marie said:
Why it isnt C#?
What is wrong?

It is working, what i still need it to do, is safe the selections into a .dat file and calculate the total.

586574987[/snapback]

The context in which you are using the << operator is OK for C++ because the ostream overloads it to write to the stream. However, the <</>> operators in C# are bitshift operators. When you create streams in C#, you use the methods on the object to read and write with them.

By the way, you can use the WriteLine method to avoid having to concatenate the Environment.NewLine to your output.

8,405 · September 25, 2005

Kawahee said:
This is why I love unmanaged C++, no bull**** :)

586574866[/snapback]

i wouldnt say its "bull****" just another way to do things, other may find c++ "bull****" with C# here to help. Heck, the crazy VB :wacko: or assembly :wacko: :wacko: :wacko: people may look down at c++ folks

5,421 · September 25, 2005

You're trying to access the labels from inside another class. You can't do that. This is a quick workaround.

A new storeInFile

  void storeInFile()
  {
   // create a file stream, for "computer.dat"
   FileStream fs = new FileStream("computer.dat", FileMode.CreateNew, FileAccess.ReadWrite);
   // create a stream writer
   StreamWriter sw = new StreamWriter(fs, System.Text.Encoding.ASCII);

   //write to file (buffer), where textBox1 is your text box
   sw.WriteLine(owner.label4.Text);
   sw.WriteLine(owner.label5.Text);
   sw.WriteLine(owner.label6.Text);
   sw.WriteLine(owner.label7.Text);
   sw.WriteLine(owner.label8.Text);
   sw.WriteLine(owner.label9.Text);
   sw.WriteLine(owner.label10.Text);
   sw.Write(owner.label11.Text);

   // close stream writer and file
   sw.Close();
   fs.Close();
  }

A new constructor for 'Part'

  private Form1 owner;
  public Part(Form1 Owner)
  {
  	owner = Owner;
  }

Each inheritted part will need to look like this now: (For whatever reason, we can't simply inherit constructors and ignore this crap. Go figure.)

 public class Memory : Part
 {
  public Memory(Form1 Owner) : base(Owner)
  {
  }
 }

Also, from a purely observational standpoint, why is this a windows application? This seems like something that would be much better suited to a web application.

September 25, 2005

This is a windows application, because the professor asked for it to be a windows application..

;)

and by the way, what does

  private Form1 owner;

does?

Sorry for all the questions, i really need to get this to work, but i also really want to learn from it.

C# to me, seems more interesting that C++.

5,421 · September 25, 2005

It gives you a reference to the main form object so you can get the label's text. You set the reference in the constructor with

owner = Owner;

See?

sw.WriteLine(owner.label10.Text);

Without the owner, you would have no path to the label10.

September 26, 2005

Thanks...

but... where's the .dat file? it isn't appearing... :no:

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[C#] Writing data to a .dat file

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