problems with richTextBox...

Question

Hi :( Please help me I can't find any information even in MSDN( I'm creating MS Word file by saving text from richTextBox. I have some questions: How can I Add new Line to it? Now I'm creating new string array and then - string[] a; RTB1.Lines = a; How can I add something from Clipboard (picture or text) from new string? Now When I'm add one string (string A for exmpl.) and then - another string (string B for exmpl.) than I get A+B. And I need : one Line - A Next line - B. Please Help me... Thank you.

Artem · Answer

So this is a very interesting idea to take two objects to the Clipboard... But... At first I have found that image deleting aftep pasting a new string (not after pasting next image) and I thought that it happens because image need more than one Line and string pasting from new Line and delete the image.. And the next problem is in my real application I need a little biger construction of file... Something like this: - Some interesting text - picture - Some lines of interesting text - And some interesting text again and again and again.... You see? the third string is like an array of lines (and I don't know the length of this array). Of course I'll try to Paste this array not from the Clipboard and I hope it'll work but not now because need to go. However thank you very much again!

Alan · Answer

OK I've downloaded the .rar file decompressed it and loaded it into VS and I now understand what the problem is. Even though you're pasting 10 images into the RTB from the clipboard only one is showing up! However I haven't been able to come up with a satisfactory solution to this :( It seems that whenever you try to paste an image on a new line all the previous ones are deleted which is bizarre to say the least! As you've probably discovered yourself it does work if you just paste the image immediately after the text including wrapping to the next line if there's insufficient space on the current line. In fact by prefixing the string with 
 and padding it out on the right with sufficient spaces you can make use of the wrapping behaviour to get it to work in a fashion but it's not very satisfactory: private void button1_Click( object sender EventArgs e) { DataObject data = new DataObject (); data.SetData( 

Some interesting Text + new string ( ' '  69)); data.SetData( DataFormats .Bitmap pictureBox1.Image); Clipboard .SetDataObject(data); for ( int i = 0; i { richTextBox1.SelectionStart = richTextBox1.TextLength; richTextBox1.SelectionLength = 0; richTextBox1.Paste( DataFormats .GetFormat( DataFormats .Text)); richTextBox1.SelectionStart = richTextBox1.TextLength; richTextBox1.SelectionLength = 0; richTextBox1.Paste( DataFormats .GetFormat( DataFormats .Bitmap)); } } You'll notice that to make life easier I've placed both the text and the image on the clipboard using a DataObject so you can paste either one of them to the RTB.

Artem · Answer

Hey! Is there any ideas? Have you download my sample??

Artem · Answer

No... You don't understand me... Of course I use SetDataObject... I create a simple application which shows my problem. I upload it on the Rapidshare.Com : http://rapidshare.com/files/52600831/WFA.rar.html ... Try it.. Thank you

Alan · Answer

When I tried this myself by calling the SaveFile() method on an RTB containing text and an image it worked fine and both the text and image were visible when I reopened the RTF file in WordPad. To place image data on the Clipboard you will of course need to call the SetDataObject() method rather than the SetText() method.

Artem · Answer

And I have one more problem... with richTextBox... Here is my steps: - past from Clipboard Text1; - past from Clipboard Picture1; - past from Clipboard Text2; - past from Clipboard Picture2 ... - past from Clipboard TextN; - past from Clipboard PictureN. Everything past from new Line... But after Saving there is no Picture1 Picture2 ... Picture(N-1) .. Understand? Where is my fault? for Pasting I use: [code] Clipboard.SetText(str); richTextBox1.Text += 
; richTextBox1.SelectionStart = richTextBox1.TextLength; richTextBox1.SelectionLength = 0; richTextBox1.Paste(); Clipboard.Clear(); [/code]

Artem · Answer

There in my post isn't whoole code.. There is a boolean flag which help do this painting only one time.

Alan · Answer

I was just looking at this again in the hope that something might occur to me and I noticed that you've got the code in the Paint eventhandler for pictureBox2 so every time it's repainted (which can be very often) the code will execute again. I don't know whether this could be causing the problem but I'd have thought you only wanted to create the bitamp once and assign it to the pictureBox2.Image property. So I'd see if it makes any difference if you place the code somewhere else where it will only execute once.

Artem · Answer

No I can't read this) ... Asa matter of fact if you'll try to change the color of text (for exm. on Red) you'll see that numbers and letters are ... like.. doubled... You'll see Red letter and BLACK letter behind... try... thats why letters are look so bold and hard to read... If you'll make color of Font as White than you'll see the same but black will not be normall.... I don't know how to say... BUT if you'll make the color as Transparent you'll see nothing! :) ... Mabye there is another way to draw Image (mabye without Bitmap)?

Alan · Answer

Yes I've noticed that legibility can suffer when you draw text on a bitmap rather than directly on the form. I think the only thing you can do is to experiment with the font. Opinions differ of course but I find that Arial and Courier are the easiest to read and Georgia also looks good on bitmaps.

Artem · Answer

Alan thank you! It works! :) And one more question : When I was making Image in pictureBox (by Paint event) the picture was vey nice but pictureBox1.Image was null. And I couldn't get Image from there. Then I solve this problem by next way: at first I was creatin bitmap and draw on it and then make pictureBox1.Image = my Bitmap and everything allright BUT Text now looking not so good and hard to read. This is my code: [code] private void pictureBox2_Paint(object sender PaintEventArgs e) { Bitmap flag = new Bitmap(500 260); Graphics g = Graphics.FromImage(flag); Painter pn = new Painter(); g = pn.DrawStudent(g ... ... ... tabControl1.Font); pictureBox2.Image = (Image)flag; draw = false; } [/code] and Painter.cs use g.Drawstring ... Font I take from tabControl.... Without drawing on Bitmap everyting was OK but now... It's not so good.. Can I solve this little problem?

Alan · Answer

To paste an image from the clipboard to a new line in the RTB you could use this code: richTextBox1.Text += 
 ; richTextBox1.SelectionStart = richTextBox1.TextLength; richTextBox1.SelectionLength = 0; richTextBox1.Paste(); This assumes that the image is in a pastable format. To get an image onto the clipboard in the first place: string fileName = @C:\imagefolder\someimage.bmp ; Bitmap bmp = new Bitmap (fileName); Clipboard .SetDataObject(bmp);

Artem · Answer

Ok! Thank you! with text everything allright now. And now how to post Image from Clipboard (or not it doesn't matter) to richTextBox from new line..???

Alan · Answer

To add a new line to a RichTextBox you can do this: string nextLine1 = Some more text ; richTextBox1.Text += Environment .NewLine + nextLine1; To add a further line equal to whatever text is currently in the Clipboard: string nextLine2 = Clipboard .GetText(); richTextBox1.Text += Environment .NewLine + nextLine2; So you'll gather from this that to get something on a new line you precede it by Environment.NewLine which is the same as 
 (a carriage return line feed pair) on Windows operating systems and append it to the existing Text property. To move the caret say to the end of the existing text you can do this: richTextBox1.SelectionStart = richTextBox1.TextLength; richTextBox1.SelectionLength = 0;

Artem · Answer

Hey! Where are you? I really can't solve this problem without your help.... Ok I'll try to explain my problem another way: how to take the caret to a new free (not used) line in richTextBox???