richtextbox

I need to load a ~ 10MB range text file into a WPF RichTextBox, but my current code is freezing up the UI. I tried making a background worker do the loading, but that doesnt seem to work too well either. Here's my loading code. Is there any way to improve its performance? Thanks. //works well for small files only private void LoadTextDocument(string fileName, RichTextBox rtb) { System.IO.StreamReader objReader = new StreamReader(fileName); if (File.Exists(fileName)) { rtb.AppendText(objReader.ReadToEnd()); } else rtb.AppendText("ERROR: File not found!"); objReader.Close(); } //background

I'm using a WinForms RichTextBox. It appears that when the RichTextBox is on a form, \r\n gets converted to \n . Here's a test: I have two rich text boxes. One is richTextBox1 , which is placed on the form: this.richTextBox1 = new System.Windows.Forms.RichTextBox(); this.SuspendLayout(); // // richTextBox1 // this.richTextBox1.Location = new System.Drawing.Point(37, 12); this.richTextBox1.Name = "richTextBox1"; this.richTextBox1.Size = new System.Drawing.Size(100, 96); this.richTextBox1.TabIndex = 0; this.richTextBox1.Text = ""; The other is rtb , which I create on the spot. When I run this

The RichEditBox control in C# (I use VS 2005) has bad performance. I load an RTF file of 2,5 MB with 45.000 colored lines of text into the control and it takes 4 minutes. I load the same RTF into the RTF control in Wordpad of Windows XP and it loads in 2 seconds. Wordpad performs 120 times faster than my application. What is the reason, and how can I fix it? I downloaded the sourcecode of Wordpad ( http://download.microsoft.com/download/4/0/9/40946FEC-EE5C-48C2-8750-B0F8DA1C99A8/MFC/ole/wordpad.zip.exe ) and it has the same worst performance (4 minutes). But this sample is an old version of

When a user writes some words in a rich text box, if that word matches some specific word, than the color of the that word should automatically change. When the user clicks on that particular colored text, it should raise an event. 1) An User inserts some text in a RichTextBox 2) If any word entered is part of a pre-defined list of words, that word should change color (define a color related to each word. 3) When a mouse click event is generated on a colored word, an event is raised. Possible result: Define a custom EventHandler with custom EventArgs: public class WordsEventArgs : EventArgs {

I'm trying to "reset" the formatting in my RichTextBox (WinForms, not WPF). I was previously using richTextBox.Text = richTextBox.Text; However, that seems to have suddenly failed me. Now no matter what I set richTextBox.Text to, it retains some of the rtf formatting. I've tried richTextBox.Rtf = richTextBox.Text; However, that complains about an incorrect format. There's gotta be a better way to do this. (Of course, selecting the entire thing, then resetting the back color, fore color, and font works, but that results in a flicker as the entire thing is selected then deselected, plus it's