I can't show a long string without it breaking a line on the screen

Question

In Winforms I use a RichTextBox control to display a long Base64 encoded string without line breaks but display the string with line breaks. Text = System.Convert.ToBase64String(Text, 0, 0, System.Base64FormattingOptions.None); Text = Text.Replace("\n", null).Replace("\r", null);

I have already tried with Rtb.WordWrap and Rtb.RightMargin but it does the same thing.

You can see that in the sample text that, depending on the character to be displayed, is when it breaks a line. If you delete that character, the line goes up. I'm seeing that it always breaks a line when it encounters a + sign or a /, which are allowed characters in Base64. So it is not a system to safely display text on the screen!! What I want is for it to display like this:

Actual situation:

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

Answer 1

public partial class Form1 : Form
{
    public Form1()
    {
        RichTextBox richTextBox1 = new RichTextBox();
        richTextBox1.Dock = DockStyle.Fill;
        this.Controls.Add(richTextBox1);

        byte[] bs = new byte[1000];
        new Random().NextBytes(bs);
        string base64 = System.Convert.ToBase64String(bs);

        richTextBox1.Text = base64;

        RichTextBoxWrap.SetDefaultWordbreak(richTextBox1);
    }
}

class RichTextBoxWrap
{
    public static void SetDefaultWordbreak(RichTextBox rtb, bool disable = true)
    {
        IntPtr pCallback = IntPtr.Zero;
        if (disable)
        {
            if (delCallback == null)
            {
                delCallback = new EditWordBreakProcDelegate(CallBack);
            }
            pCallback = System.Runtime.InteropServices.Marshal.GetFunctionPointerForDelegate(delCallback);
        }

        SendMessage(rtb.Handle, EM_SETWORDBREAKPROC, IntPtr.Zero, pCallback);
        SendMessage(rtb.Handle, WM_SIZE, IntPtr.Zero, new IntPtr(((uint)rtb.Width << 16) | (uint)rtb.Height));
    }

    private static EditWordBreakProcDelegate delCallback;

    private const uint WM_SIZE = 5;
    private const uint EM_SETWORDBREAKPROC = 0x00D0;

    [System.Runtime.InteropServices.DllImport("user32.dll", CharSet = System.Runtime.InteropServices.CharSet.Unicode)]
    private extern static IntPtr SendMessage(IntPtr hwnd, uint message, IntPtr wParam, IntPtr lParam);

    private delegate int EditWordBreakProcDelegate(IntPtr text, int pos_in_text, int bCharSet, int action);

    private static int CallBack(IntPtr text, int pos_in_text, int bCharSet, int action) { return 0; }
}