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RichTextBox

RichTextBox

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by Howard 9448490
Creating a reusable editor for C# Applications using the RichTextBox Control
by Hicham El Horri
C# RichTextBox tooltip like Visual Studio's.
by Sergey Nozhenko
A technique of invoking and implementing non-standard interfaces of windowsless rich edit controls is demonstrated
by Robert Gustafson
I've created an enhanced version of the Extended RichTextBox created by Razi Syed.

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by Robert Gustafson
I've created an enhanced version of the Extended RichTextBox created by Razi Syed.
by Howard 9448490
Creating a reusable editor for C# Applications using the RichTextBox Control
by Robert Gustafson
A UserControl that allows rich-text applications to have a ruler with support for margins, indents, and tabs
by Sergey Nozhenko
A technique of invoking and implementing non-standard interfaces of windowsless rich edit controls is demonstrated

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RichTextBox 

14 Feb 2022 by Howard 9448490
Creating a reusable editor for C# Applications using the RichTextBox Control
25 Sep 2012 by Hicham El Horri
C# RichTextBox tooltip like Visual Studio's.
28 Mar 2015 by Richard MacCutchan
An integer gives you a range of 0 to 2,147,483,647, which should be plenty for a 150 Kb file.
2 Nov 2012 by fjdiewornncalwe
A really quick google search turned up this article: Search and Highlight Text in RichTextBox[^]. Maybe you can get a starting point from here.
10 Jan 2013 by Sergey Alexandrovich Kryukov
First of all, please see my comment to the question. It's long enough to continue in a separate post, but first of all because if has to be some kind of the answer.From my explanations of this situation, you probably should have understood by now, that it's very likely that you are the one...
26 Oct 2014 by Robert Welliever
The below code is one way to do it, but I'm not sure I'm totally clear on your needs. Below I get the value, and then the begin and end indices of that value. So it would be [11,0,1], [2,3,3], ..., because that is the actual start and end index of the value. What are you getting the indices...
28 Mar 2015 by OriginalGriff
Um.int is a 32bit value, with a range of -2147483648 to 2147483647If your rich text exceeds 2GB in size, then you have a problem - and that's that the user will will never read it all, for starters...
22 Dec 2015 by CHill60
Firstly, my apologies to the other members for posting this a solution - it's too long for a comment.You have posted several questions regarding this project. Lately...Member 11788899 wrote:Chill60, please help with some code?The short answer is that I'm not prepared to spend large amounts...
8 Oct 2012 by nv3
I am not sure that I understood your question correctly. You might want to let Windows do the synchronization for you and use SendMessage from your worker thread to send display messages to your UI thread. The sending thread will be synchronized with the receiving thread by Windows. But be aware...
20 Feb 2013 by hemantwithu
I have a string as "Hello World" in the RichTextBox. I am selecting the each word and applying style.In this string "Hello" is bold and having strike-Through.Suppose I want to apply underline to the complete Text (Hello world).The previous style for which the "Hello" has is removing and new...
4 May 2013 by Sergey Alexandrovich Kryukov
You don't need such "feature" if you do it programmatically. The "feature" only exists in UI, helps inexperienced users. On the level of software development, there is no such thing as "special" character (how can it be "special", I wonder? :-)).That was a question of a non-developer. In...
26 Feb 2014 by BillWoodruff
Try this:YourLabel.Text = YourRichTextBox.Lines.Length.ToString();Keep in mind that if word-wrap is enabled, that may effect the way the end-user perceives the number of lines in a RichtTextBox.
27 Oct 2014 by BillWoodruff
I think you may be closer than you think you are to finding a solution for this.The code shown here assumes: Each data-item is separated from the other data-items by one space character. i.e., there are no line-breaks in the data being parsed, no tabs, etc. To handle data-items separated by...
17 Dec 2015 by Dave Kreskowiak
You have two calls back to CheckForReplacementText in your CheckForReplacementText method. Also, there is no bailout to stop this endless process, so yeah, your code is going to throw a stack overflow error.Why are you calling CheckForReplacementText from inside the method?Your code...
14 Aug 2017 by BillWoodruff
I've used this in the past; it handles the case of all-selected in the same way as none-selected. And, you can, optionally, reset the selection after the Font change. private void SetFont(RichTextBox rtbx, bool restoreselection = false) { int selStart = rtbx.SelectionStart; int selLength...
9 Oct 2018 by Herman<T>.Instance
Your function ConvertRtbToBytes(string richTextBox) asks for a string but ain't you needing the RichtTextBox object there in stead of the string? That Object holds the .Document property. A string does not have that
1 Mar 2019 by Sergey Nozhenko
A technique of invoking and implementing non-standard interfaces of windowsless rich edit controls is demonstrated
8 Oct 2012 by Espen Harlinn
Have a look at: SendMessageCallback[^], it's highly useful when you want to pass a dynamically allocated buffer, since you can have the callback release the memory once the message has been processed.Best regardsEspen Harlinn
21 Oct 2012 by Jackie00100
I found this class recent extending the graphics class, i changed it a little, and it does everything i could ask for!using System;using System.Drawing;using System.Runtime.InteropServices;using System.Windows.Forms;using System.Drawing.Imaging;using System.Text;public static...
10 Jan 2013 by Espen Harlinn
If you don't mind paying for a professional control, have a look at: DXRichEdit[^] - it has most of the features you require.You can use the XtraPrinting[^] library to export to PDFBest regardsEspen Harlinn
5 Feb 2013 by QuantumHive
Hi,I've searched the entire internet for two consecutive days, with little to no success on this issue:To append images in the System.Windows.Forms.RichTextBox class without copying to clipboard or any other dirty tricks, I have stumbled upon the ExRichTextBox class by Khendys Gordon...
8 May 2013 by Sergey Alexandrovich Kryukov
Luci C wrote:Release the handle that is keeping my file locked&hellip;Well, I'm not really sure, but this is what you should check up. Please see my comment to the question in reply to your comment. This is easy easy enough to investigate.First of all, the similar question was asked here...
20 Jun 2013 by lukeer
Have the value accessible as a property in some object. Two-way-bind that property to both visualisations. Convert to ASCII or hex nowhere but in the UI part.
2 Jul 2013 by Sergey Alexandrovich Kryukov
Here is the idea: I don't think using RichTextBox, and RTF in general would be really useful here. RTF format, being the standard, is quite ugly and hard to work with; importantly, it's majorly obsolete and rarely used these days for anything more or less complex. One other problem is that,...
26 Aug 2013 by Sergey Alexandrovich Kryukov
You can do it without using the said method, but other approaches (using selection properties) will be equivalent. Like it or not, the concept of selection is bound with the caret position, you cannot operate them independently.And this is how all text editors and word processors work these...
26 Aug 2013 by BillWoodruff
I don't see any conceptual barrier to your getting this done: here's a simple demonstration that requires a RichTextBox, and a Button on a Form.Wire-up the RichTextBox's SelectionChanged EventHandler as shown here, and the Button's Click EventHandler as shown here://keep track of the...
21 Oct 2013 by Sergey Alexandrovich Kryukov
There is no one correct format for that. Main messages can have different parts, each in its own "format": text, graphics, and more. One of the content types is HTML, but some use RTF (way too obsolete). After all processing, everything is represented and sent as a plain text, but parts of the...
3 Nov 2014 by BillWoodruff
Assume: a WinForms project where:1. ControlsButton: btnTranslate: click to translate English to Arabic: uses rtbEnglish, rtbArabicButton: btnSearchButton: click to search for an English word: uses tbSearchEnglishRichTextBox: rtbEnglish: displays user-entered English...
26 Dec 2014 by MasterCodeon
For everyone who doesn't know how to implement this with a speech synthesizer, do as follows:Step 1:add a reference to the System.Speech Name space like this:Right click on the references folder and click "Add Reference..."then a window should pop up, click the tab that says ".NET" then...
16 Nov 2015 by Joe Ross
If I understand your question correctly you are attempting to remove curse words (ex 'sh*t', 'bi^ch', etc.) from a RichTextBox and replace them with something more user friendly. I can agree (to a point) with some of the other comments in this post you should really try actually learning...
21 Dec 2015 by clwprogrammer
add the function to your code, then follow the instructions below. the function will check to see if the selected replacement contains a definition and return just the word, otherwise it will just return what was passed as the argument.Private Function...
7 Jan 2016 by Richard MacCutchan
You can often find the answer just by reading the documentation for the class you are using: Clipboard.SetText Method (String, TextDataFormat) (System.Windows.Forms)[^].
12 Apr 2016 by Jochen Arndt
You are calling the String.Replace method but you must call the Regex.Replace Method (String, String) (System.Text.RegularExpressions)[^]:Regex rgx = new Regex("ක([^]*)ග");string result = rgx.Replace(richTextBox2.Text, "");richTextBox2.Text = result;
7 May 2016 by Patrice T
You should learn about RegEx (regular Expressions)Regex Class (System.Text.RegularExpressions)[^]Regular Expression Language - Quick Reference[^]Google for more
20 May 2016 by OriginalGriff
Why are you trying to do this recursively, when it's a loop problem? Recursion is only useful when you pass a value to the method as a parameter, so that different iterations have an independent value.And all you do is call the same method, and exit when it returns - so a loop is a much more...
18 Feb 2017 by Valery Possoz
Hello,The .Text property of the RichTextBox is no good for you.Instead use .LinesFile.AppendAllLines(@"c:\temp\test1.txt", richTextBox1.Lines);The is because the .Text property uses \n to indicate a new line and in a Text file it is not enough.Try this to...
14 Aug 2017 by Leo Chapiro
You can select all the text before changing SelectedFont: rtbText.SelectAll(); rtbText.SelectionFont = fontDialog1.Font;
29 May 2018 by CHill60
You haven't set the width of the dynamically created RichTextBox so it is wrapping the text. Try setting rtb.Width to the same value as in your RichTextBox1
8 Aug 2018 by Gerry Schmitz
private int _counter = 0; ... Textbox_One.AppendText( ++_counter.ToString() + DataToSetandGet.Substring(1).Replace("\r", "\r\n"));
31 Oct 2019 by RickZeeland
Here is a simple example to get you started, it prints the line numbers and the text of the lines: this.FindWords("test.txt", "private"); private void FindWords(string fileName, string searchString) { string line; int count = 1; ...
17 Feb 2022 by Richard MacCutchan
You are only adding the colour to the actual word that is found in the text box. You need to set the length field based on the index position where the cursor is. Change the first line of the while loop in the CheckKeyword method to the...
17 Feb 2023 by Graeme_Grant
here you go, a solution using the control's own properties: public partial class Form1 : Form { public Form1() { InitializeComponent(); } private void richTextBox1_TextChanged(object sender, EventArgs e) { ...
17 Feb 2023 by Graeme_Grant
Solution posted with your original question: C# richtextbox editing | Solution 1[^]
2 Aug 2012 by #realJSOP
I need to be able to determine if insert mode is active in a WPF RichTextBox. I tried using reflection like so:PropertyInfo pInfo = this.GetType().GetProperty("_OvertypeMode", BindingFlags.NonPublic | BindingFlags.Instance);However, the property _OverTypeMode doesn't exist in the...
2 Aug 2012 by #realJSOP
I found out that in WPF, a TextBox or RichTextBox always defaults to Insert being ON when the control is instantiated. With that knowledge, I simply track the pressing of Key.Insert, and maintain my own variable that indicates status. Problem solved.
4 Aug 2012 by AbO_OsAmH
Hello ......I wont to ask how to handle right click in richtextbox in c#......for Example:when i click on right click mouse over richtextbox the programe will display a messageBox.Thanks A lot...
4 Aug 2012 by AbO_OsAmH
private void richTextBox1_MouseDown(object sender, MouseEventArgs e) { if (e.Button == System.Windows.Forms.MouseButtons.Right) { MessageBox.Show("you got it!"); } }This is the solution.
19 Aug 2012 by Farzin Shakhsar
i ve been miserably digging everywhere on the internet for the past 6 or 7 days trying to find a way of showing a rich text box content from my c# windows application on a report with the text being shown in the exact same entry form. .Net RDLC didnt work cause its not supporting rtf so i moved...
20 Aug 2012 by Naga KOTA
hi,refer thishttp://vbcity.com/forums/t/104797.aspx[^]
26 Aug 2012 by pmcm
Hi I've a winform with a Rich Textbox control on it have noticed that to paste text copied from word CTRL + V works fine but the option to Right Click > Paste is not available. Are there any work-arounds for this?
20 Sep 2012 by Dave Kreskowiak
You don't.The TextBox control is just a normal HTML TextBox and doesn't know anything about Word documents so it can't display them.ASP.NET doesn't have a RichTextBox control and even if it did, it has the same problem as the TextBox. It wouldn't know about the Word document...
20 Sep 2012 by vincent clyde
Try Using 3rd Party Controls like Telerik or DevExpress
20 Sep 2012 by _Amy
Use Open Xml SDK[^]. It's free, you don't need any Office libraries and there are many resources on the web.Take a look at Read Microsoft Word Document File by using C#[^].--Amit
1 Oct 2012 by Bernhard Hiller
You need the Graphics.DrawString method. You can get the Graphics object by Graphics.FromImage. And then draw all the text your self...
2 Oct 2012 by BobJanova
There are two options here:You can write the text to a RichTextBox and then screen capture it with Control.DrawToBitmap[^]. You probably need to post-process the Bitmap you get to sort out the transparency.You can write a miniature RTF (or HTML or other tagging system; RTF is pretty...
6 Oct 2012 by hamid_mohammadi
HiI save content of book in rtf format in database. often i want to merge pages of each chapter and show in RichTextBox. but at first time text of rich text box shows in the middle of control. like this illustration of my problemonly at first time this happend and when i changed the chapter...
7 Oct 2012 by Briti Sundar
Are you trying to say like this..//inside thread ---PostMessage(WM_MYMSG, 0, 0);// and receive it inside UI in a synchronized way like thisBEGIN_MSG_MAP(MyWnd)MESSAGE_HANDLER(WM_MYMSG, OnMymethod);END_MSG_MAP()//do your work inside onMymethod() function
1 Nov 2012 by MR. AngelMendez
Hi, I have a richtexbox with some text in it and a timer. I want to make the richtexbox start from the begining of the text and select the first word and as the timer resets change the selection to the next word and so forth until it is finished with the final word. Its kind of like leap frog to...
4 Nov 2012 by tamthoima
Hi,I want to use Richtextbox to store text with format in SQL database. I love the way System.Windows.Forms.RichTextBox handle binding RTF format but i hate the way it change multi-font format. So I use flowdocument to handle multi-font format. Below is my codeImports...
8 Nov 2012 by hansoctantan
I have a RTF that displayed in RichTextBox, The program can load the file but not all.Not all because when I opening the file in WordPad the missing text is there. I try searching it in the Internet but I have no luck finding the solution.Can anyone post why this happens.Originally the...
8 Nov 2012 by Steve RG
My C# application includes simple text boxes and richtext boxes. Often the richtext boxes contain rich text copied and pasted from elsewhere, and often the rtf markup includes hardcoded font size (\fsXX, XX in half points). In most cases the font size of the rich text is the same or close to...
8 Nov 2012 by hansoctantan
I have found the solution in this...I just open the file in wordpad and save it(Ctrl+S) and it works...
13 Nov 2012 by Member 8544853
I have a text box and I am using richtexteditor like CkEditor or Ajaxhtmleditor.I would like to actually define the css styles and apply it to the text in the textbox so that when the data is submitted to database, the styles are applied and rendered with the styles i have applied.Just like...
18 Nov 2012 by Jackie00100
Hi im working on some sort of a text editor for fun, and i ran into a problem, i wanna scale the text selected or all text in a rtfbox, im wel aware of ".Zoomfactor" but this dont scale the "text" so it doesn't give the wished result. Also it must be a scaling, so i cant just say font.size *= x...
25 Nov 2012 by Richard MacCutchan
That's not a spreadsheet, it's a table or grid. Take a look at the DataGridView[^] class.
2 Dec 2012 by Jackie00100
Found a way, i simply just incrased the size of every char one by one, maybe not the best solution, but it works for now! thanks
6 Dec 2012 by shashank kulshrestha
Hi Venkatesh Desai,I hope this code will helpful for you.Microsoft.Office.Interop.Word.ApplicationClass Application = new Microsoft.Office.Interop.Word.ApplicationClass(); object nullobj = System.Reflection.Missing.Value; object file =...
6 Dec 2012 by Krunal Rohit
http://justgeeks.blogspot.in/2011/09/reading-ms-word-2007-document-in-docx.html[^]
13 Dec 2012 by Thomas Daniels
Hi,Have a look at this article:htmlArea - Turn any TEXTAREA into a WYSIWYG editor[^]
18 Dec 2012 by pulkitluthra
HiWe're using Silverlight 4 with MVVM.Problem 1In an effort to implement Spellchecking for all our textboxes, we replaced them with RadRichTextBoxes and Text Input Providers.Even though the spell check functionality works great, it has slowed our pages down drastically (an increase...
29 Dec 2012 by S.Faizan.Ali
I want to restrict user to enter a limited size of content in richtextbox.So it may work like a page. When the content reaches the end of page it does not allow user to insert more content(including images or any UIContent).
29 Dec 2012 by Abhishek Pant
How to set WPF RichTextBox Maximum Length?[^]hope it helped!
29 Dec 2012 by Jibesh
This is already answered in cp check here[^]
22 Jan 2013 by Mycroft Holmes
Does the richtextbox have an enabled property or a readonly property these are the usual way of freezing the content.
22 Jan 2013 by lukeer
Use the RichTextBox to render your output. Just don't let it draw to the scree, but to an image instead. Then display that image instead of an actual control.This functionality can be built into something derived from UserControl, Control, Panel or whatever seems more practical for you.
23 Jan 2013 by adriancs
C# - Formatting Text in a RichTextBox by Parsing the Rich Text Format (RTF)[^]
28 Jan 2013 by Lara Smith
To give you of an idea of what i'm talking about... please check this:http://www.planet-source-code.com/vb/scripts/ShowCode.asp?txtCodeId=7103&lngWId=10[^]Everything works properly and now i'm trying to add another feature to it in the insert menu: "Equation"...Before, i was using VB6...
5 Feb 2013 by Abhinav S
When you convert from EMF to WMF, you are converting from a 32bit file to 16bit file - What is WMF?[^].As a result, loss in quality is unavoidable.
4 May 2013 by Sandesh M Patil
Refer below linkDisplaying unicode[^]
18 Feb 2013 by Sandeep Mewara
As mentioned here[^]:Use a font that includes the characters you want and explicitly type the unicode number for the character in the string. For the Arial Unicode MS font you can type "\u20ac" and it will print the euro sign. You can check the codes for the font and their corresponding...
20 Feb 2013 by Groulien
Hello CP,I'm currently working on an WPF application which uses a RichTextBox. Unfortunately I'm having some difficulties.The WPF RichTextBox (with default settings, no spellcheck) occasionally lags when I'm typing (or just holding down any key). It gives the appearance of unresponsiveness...
20 Feb 2013 by NewPast
you may integrate ms word instead, how over you may if you don't need this you could inset activex container that can handle me eq,it is not ocx but it is insert ole able object
22 Feb 2013 by Just eg
code for you...Sorry ... not enaugh space..download code herehttp://www.megafileupload.com/en/file/395411/CustomListItem-rar.html[^]
24 Feb 2013 by Gray_Ang3l
e9net, had a solution but i figured out the easiest way to do it by simply adding the following lines... Private Sub ListBox1_SelectedIndexChanged(sender As Object, e As EventArgs) Handles ListBox1.SelectedIndexChanged RichTextBox1.Clear() RichTextBox1.Text =...
10 Mar 2013 by Jegan Thiyagesan
Hi,you will have to create the graphics for the rich text control, parse the text you wanted to parse and get the size of that text.var font = new System.Drawing.Font(this.Font, FontStyle.Regular);Graphics graphics = richTextBox1.CreateGraphics();SizeF textSize =...
11 Mar 2013 by hemantwithu
At last I had fixed the issue by restyling the text char by char .See my solution If rtfBox.SelectionFont.Bold Then For x As Integer = selectionStart To selectionEnd - 1 rtfBox.Select(x, 1) rtfBox.SelectionFont =...
15 Mar 2013 by Berry Harahap
Hello Brothers, Programmer, Master.Please help me... Let me learn by your example. :)Description :The word are shown in a popup when a word is selected and right-clicked.For example,INPUT : "Barcelona is my favorite football club".After I selected the word "football", then the...
19 Mar 2013 by CHill60
You really should try using Google or Yahoo or any other search engine.However here is a step by step guide to setting up a context menuhttp://www.c-sharpcorner.com/uploadfile/mahesh/context-menu-in-C-Sharp/[^]And to be on the safe side here is some information about RichTextBox...
28 Mar 2013 by Menon Santosh
Check here there are many methods of find a text in richtextboxhttp://msdn.microsoft.com/en-us/library/3134f2f7%28v=vs.71%29.aspx[^]
7 Apr 2013 by richfu01
I need to align all content (string and equation ) in a line to vertically center position,but RichtextBox only support HorizontalAlignment property. Is there any to do that?
7 Apr 2013 by Member 9971900
I just came across a problem with RichTextBox in .NET.Using Insert Plain Text and Images into RichTextBox at Runtime[^] I can insert an image to the RichTextBox. Then what I want is that when the image in the RichTextBox is clicked, a MessageBox pops-up showing its name or id.My question...
8 Apr 2013 by Sergey Alexandrovich Kryukov
The problem is here:this.richTextBox1.LoadFile(path, RichTextBoxStreamType.RichText);this.richTextBox1.ReadOnly = true;These two lines should be in a method invoked via System.Windows.Forms.Control.Invoke.You cannot call anything related to UI from non-UI thread. Instead, you need to...
8 Apr 2013 by Sergey Alexandrovich Kryukov
Luci C wrote:Form 1 is MDIParent and it show up Form2 which is an mdichild. On the Form2 I have a link-> which opens Form3 with some content read from file.Here is the idea: who needs MDI, ever? Why torturing yourself and scaring off your users?Do yourself a great favor: do not use MDI at all....
13 Apr 2013 by Sergey Alexandrovich Kryukov
You can consider the document as a BLOB and store it in database using file stream storage. Please see:http://technet.microsoft.com/en-us/library/bb933993.aspx[^],http://www.mssqltips.com/sqlservertip/1489/using-filestream-to-store-blobs-in-the-ntfs-file-system-in-sql-server-2008/[^].On...
5 May 2013 by Abhinav_Sharma
I am currently working with richtextbox based content editor .This is a very good editor but lacks header and footer functionality So bottom line,I want to add header and footer to this content editor.I have searched in the net regarding header and footer but they were adding header and...
14 May 2013 by Member 10053389
i m using rich text box in wpfi m inserting some text in that rich text box and image as well now i want to save that into database in one column is this possible?
14 May 2013 by Basmeh Awad
try this...http://www.c-sharpcorner.com/uploadfile/nipuntomar/wpf-richtextbox-content-textimage-save-to-database/[^]
24 Oct 2020 by Saqib Ghatte
I want to delete a specified line in RichTextBox without copying it to another string or array because it removes the formatting of text.I tried using RichTextBox.Lines(specified_line) = ""But it is not working. What should I do?Thanks in advance!
18 May 2013 by Basmeh Awad
try thisRichTextBox1.Select(1, RichTextBox1.GetFirstCharIndexFromLine(1))' Give your line number RichTextBox1.SelectedText = ""
20 May 2013 by BaiYiFan
I insert an image in a RichTextBox by using a InlineUIContainer. Now I am trying to add some handlers to this image. Here is my code:filepath = openFileDialog.FileName; Image img = new Image(); BitmapImage bImg = new BitmapImage(); ...