how to allow only one line in rich text box - c#

I'm using WPF (C#).
I want the user to be able to only type one line in a rich text box (can't press enter key).
Could anyone tell me how can I set up this kind of rich text box property?

Set its AcceptsReturn property/attribute to false.

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DevExpress RepositoryItemComboBox enter text without showing caret

I am using RepositoryItemComboBox inside a DevExpress.XtraGrid.GridControl. I have very specific requirements for the behavior of the RepositoryItemComboBox. One of these is as follows:
On receiving focus, the combo box should not show caret. It should not highlight (select) the current text.
On keyboard input, the combo box should not show caret, but should update the edit value.
Is it possible to achieve this behavior with RepositoryItemComboBox?
You're probably looking for TextEditStyle = TextEditStyle.DisableTextEditor?

DevExpress MemoExEdit does not show the first line of my text until down arrow pressed

I needed a TextBox in C# UI with the capability of showing the multiline content if needed. Once the down arrow or ellipsis (located at the inner edge of the text box)is pressed, then a dialog pops up and either allows the user to type more text or shows the already saved multiline text.
To that end , after research I found MemoExEdit from DevExpress. Now I have everything I need except the textbox(MemoExEdit) does not show anything until the down arrow is clicked. in other words the text inside the box is blank actually just a blue A shows up regardless of my content. Thanks for any help how to fix this.
I got my answer : Set the MemoExEdit's Properties.ShowIcon property to false.

C# need to use enter key in multiline texbox to move down one line, not leave the texbox

In C# I have a multiline text box that users enter case notes into. However when they enter the text box and hit enter, it leaves the text box and jumps to the next field like the tab button. Any way to over ride this behavior and make the return key move down a line? I don't need to disable the return key behavior on the entire form, only in the one multiline text box.
Thanks.
You need to set the property
textBox.AcceptsReturn = true;
Without this property you could use CTRL+ENTER to initiate a newline.
Sometimes this is useful if you need to have a default AcceptButton also set on the form.
See MSDN documentation
Set the AcceptsReturn property to true.

how to connect two rich text box

I write a word processor, and I want to display the text on separate pages, like Microsoft Word, then I think do Collection of Rich Text Box, and I want that when a user typed in and filled the first box in the text, The cursor moves automatically the second box.
How can I do this? Is there any event activated when the text box is filled?
I found this to build OnVisibleScrollbarsChanged event. http://www.csharp-examples.net/check-scrollbars-visibility/
There are events which trigger when the textbox's text get changed.
So count the amount of text within that box, and if it reaches a certain amount - go to the next 'page'.

Highlighting particular text ina WPF textbox and registering event to that text only

In my WPF application I am having some following type of textbox
So, In this textbox, the text is not written by user it is generated by program, i wish to Highlight the particular text "Enter String Value" and when user clicks on that particular highlighted text only then I wish to fire a event.
Can u guys give me some hint or overview to achieve this. I tried few tricks but can't get success.
Thanks in advance.
Use <RichTextBox> with <FlowDocument>. As I know, TextBox allow you to determinate font (color, size, etc.) only one time, and you wouldn't able to modify color of partial text in one TextBox
I think you can use Regex to get your match from your textbox, and then create Run objects using that match. You can set the Background of the match (runobject.Background = Brushes.Red)

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