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copied!<p>I would use a <a href="http://msdn.microsoft.com/en-us/library/system.windows.forms.richtextbox.aspx" rel="nofollow">RichTextBox</a>. This has an easy way to change the color of text. Here is an example where I have 3 inputs from the user that tells how wide each column should be. Then it reads in a file and colors the widths appropriately. Hopefully this will give you some more ideas.</p> <pre><code>public partial class Form1 : Form { public Form1() { InitializeComponent(); ReadFile(); } private void ReadFile() { // Assumes there are 3 columns (and 3 input values from the user) string[] lines_in_file = File.ReadAllLines(@"C:\Temp\FixedWidth.txt"); foreach (string line in lines_in_file) { int offset = 0; int column_width = (int)ColumnWidth1NumericUpDown.Value; // Set the color for the first column richTextBox1.SelectionColor = Color.Khaki; richTextBox1.AppendText(line.Substring(offset, column_width)); offset += column_width; column_width = (int)ColumnWidth2NumericUpDown.Value; // Set the color for the second column richTextBox1.SelectionColor = Color.HotPink; richTextBox1.AppendText(line.Substring(offset, column_width)); offset += column_width; column_width = (int)ColumnWidth3NumericUpDown.Value; // Make sure we dont try to substring incorrectly column_width = (line.Length - offset < column_width) ? line.Length - offset : column_width; // Set the color for the third column richTextBox1.SelectionColor = Color.MediumSeaGreen; richTextBox1.AppendText(line.Substring(offset, column_width)); // Add newline richTextBox1.AppendText(Environment.NewLine); } } } </code></pre>

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