Problem to save array into text file

Hi Everyone,

I have the problem when I tried to save my array into text file... Below is my code with the problem (bold mark):
for the reply, I very appreciate.. thanks

using System;

using System.Collections.Generic;

using System.ComponentModel;

using System.Data;

using System.Drawing;

using System.Linq;

using System.Text;

using System.Windows.Forms;

using System.IO;

namespace array2d

{

public partial class Form1 : Form

{

private System.Windows.Forms.Button button1 = new Button();

private System.Windows.Forms.PictureBox pictureBox1 = new PictureBox();

private Random _rnd = new Random();

public Form1()

{

InitializeComponent();

//this is usually done in the designer

this.button1.Location = new System.Drawing.Point(180, 47);

this.button1.Name = "START";

this.button1.Size = new System.Drawing.Size(75, 23);

this.button1.TabIndex = 0;

this.button1.Text = "START";

this.button1.UseVisualStyleBackColor = true;

this.button1.Click += new System.EventHandler(this.button1_Click);

this.pictureBox1.Location = new System.Drawing.Point(13, 115);

this.pictureBox1.Name = "pictureBox1";

this.pictureBox1.Size = new System.Drawing.Size(128, 256);

this.pictureBox1.TabIndex = 1;

this.ClientSize = new System.Drawing.Size(500, 470);

this.Controls.Add(this.pictureBox1);

this.Controls.Add(this.button1);

}

private void button1_Click(object sender, EventArgs e)

{

//do a fake image processing for a 32bpp bitmap

//note that I use 4 bytes for one pixel,

//each 4th byte represents the alpha-channel

//set up an array (x must be multiple of 4)

byte[,] myMatrix = new byte[800, 200];

//fill with random (color-) values

for (int y = 0; y < myMatrix.GetLength(1); y++)

{

for (int x = 0; x < myMatrix.GetLength(0); x++)

{

myMatrix[x, y] = (byte)_rnd.Next(256);

}

//now we have to convert the 2 dimensional array into a one dimensional byte-array

byte[] pixels = new byte[myMatrix.GetLength(0) * myMatrix.GetLength(1)];

for (int y = 0; y < myMatrix.GetLength(1); y++)

{

for (int x = 0; x < myMatrix.GetLength(0); x++)

{

pixels[y * myMatrix.GetLength(0) + x] = myMatrix[x, y];

string file_name = "C:\\test.txt";

string tLine = "";

System.IO.StreamWriter objWriter;

objWriter = new System.IO.StreamWriter(file_name);

// string[] aryTest = new string[32768];

for (int i = 0; i < 5; i++)

{

tLine = tLine + pixels[i] + "\r\n";

objWriter.WriteLine(pixels[i]);

}

3 Replies

Know the answer? Post it — somebody with the same question will find it here.

Himanshu Bhensdadia14y ago
Can you post your error?
lina lina14y ago
Thanks for the reply, but I still found the error with your code.. :(
Himanshu Bhensdadia14y ago
Please Check the below code:
Don't forget to close the stream writer.

string file_name = "C:\\test.txt";
string tLine = "";
System.IO.StreamWriter objWriter;
objWriter = new System.IO.StreamWriter(file_name);

byte[] pixels = new byte[myMatrix.GetLength(0) * myMatrix.GetLength(1)];
for (int y = 0; y < myMatrix.GetLength(1); y++)
{
for (int x = 0; x < myMatrix.GetLength(0); x++)
{
  pixels[y * myMatrix.GetLength(0) + x] = myMatrix[x, y];

// string[] aryTest = new string[32768];
for (int i = 0; i < 5; i++)
{
tLine = tLine + pixels[i] + "\r\n";
objWriter.WriteLine(pixels[i]);
}

}
}
            objWriter.Close();