Another TextBox Question

[C of Green]

Hi everyone ... im just wondering if i can output a string into a textbox with a specified format.
I have an array thats 3200 chars that i want to output to a text box, however i want to output
this array in a row/column oriented fashion that is 80 columns by 40 rows. But when i add the
next lines into the array after 80 chars then output it to a text box, it will only output the
first line into the textbox.

        const int NUMOFROWS = 40;
        const int NUMOFCOLS = 80;
        private char[] TempHeader = new char[3200];
        private char[] ASCIIHeader = new char[3200];

        private void DisplayASCII(char[] ASCIIHeader)
        {
            for (int row = 0; row < NUMOFROWS; row++)
            {
                for (int col = 0; col < NUMOFCOLS; col++)
                {
                    TempHeader[col] = ASCIIHeader[col];
                }
		TempHeader[col] = '\n';
            }
            outputFileTextBox.Text = new string(TempHeader);
        }

Thanks for any help

[prog-bman]

Make that '\n' a System.Environment.Newline

[C of Green]

hi and thanks for the reply prog-bman. However i was able to figure it out so it works but now
the problem is its really really slow to output 3200 chars on the screen. I can almost write
this out by hand while its doing it!!! Just wondering if anyone might have an idea of why this
is ? here is the code ...

        const int NUMOFROWS = 40;
        const int NUMOFCOLS = 80;
        private char[] ASCIIHeader = new char[3200];

        private void DisplayASCII(char[] ASCIIHeader)
        {
            int x = 0;
            for (int row = 0; row < NUMOFROWS; row++)
            {
                for (int col = 0; col < NUMOFCOLS; col++)
                {
                    outputFileTextBox.Text += Convert.ToString(ASCIIHeader[x]);
                    x++;
                }
                outputFileTextBox.Text += "\r\n";
            }
        }

oh ya i guess the textbox requires the "\r\n" for a nextline, unlike a console that just needs \n.

any help would be great, thanks !

[Prelude]

You should be using a StringBuilder for that loop. It's much faster.

[C of Green]

Right on! thanks for the tip prelude. With StringBuilder it works great and is fast!

        const int NUMOFROWS = 40;
        const int NUMOFCOLS = 80;
        private char[] ASCIIHeader = new char[3200];
        StringBuilder buffer = new StringBuilder();

        private void DisplayASCII(char[] ASCIIHeader)
        {
            for (int row = 0; row < NUMOFROWS; row++)
            {
                for (int col = 0; col < NUMOFCOLS; col++)
                {
                    buffer.Append(ASCIIHeader[(row) * NUMOFCOLS + col]);
                }
                buffer.AppendLine();
            }
            outputFileTextBox.Text = Convert.ToString(buffer);
        }