R – How to get a single paragraph text from a richtextbox when double clicking on it

paragraphrichtextbox

I'm having some trouble getting control of the WPF richtextbox control.

What I want to is as follows :
I have a RichTextBox control called richTextBox1 that I filled up with data from a database.

I need to get the text on a single line (meaning – a single paragraph) when I click the control.

All I found over the net is a code to copy ALL the RTB text.

Any ideas how to get just the text in the line that was clicked ?

Best Answer

I made serious web digging and here is a working solution.

private void richTextBox1_MouseDoubleClick(object sender, MouseButtonEventArgs e)
{
  TextPointer t = richTextBox1.GetPositionFromPoint(e.GetPosition(richTextBox1), true);

  string textAfterCursor  = t.GetTextInRun(LogicalDirection.Forward);
  string textBeforeCursor = t.GetTextInRun(LogicalDirection.Backward);

  string FullParagraphText = textBeforeCursor+textAfterCursor;
  MessageBox.Show(FullParagraphText);
}

(thanks to Justin-Josef with his post : http://blogs.microsoft.co.il/blogs/justinangel/archive/2008/01/29/tapuz-net-getting-wpf-s-flowdocument-and-flowdoucmentreader-mouseover-text.aspx )

Related Solutions

C# – join lines

This will work:

        // Create a temporary buffer - using a RichTextBox instead
        // of a string will keep the RTF formatted correctly
        using (RichTextBox buffer = new RichTextBox())
        {
            // Split the text into lines
            string[] lines = this.richTextBox1.Lines;
            int start = 0;

            // Iterate the lines
            foreach (string line in lines)
            {
                // Ignore empty lines
                if (line != String.Empty)
                {
                    // Find the start position of the current line
                    start = this.richTextBox1.Find(line, start, RichTextBoxFinds.None);

                    // Select the line (not including new line, paragraph etc)
                    this.richTextBox1.Select(start, line.Length);

                    // Append the selected RTF to the buffer
                    buffer.SelectedRtf = this.richTextBox1.SelectedRtf;

                    // Move the cursor to the end of the buffers text for the next append
                    buffer.Select(buffer.TextLength, 0);
                }
            }

            // Set the rtf of the original control
            this.richTextBox1.Rtf = buffer.Rtf;
        }

C# – How to get the current line in a RichTextBox control

This worked for me:

this.WordWrap = false;
int cursorPosition = this.SelectionStart;
int lineIndex = this.GetLineFromCharIndex(cursorPosition);
string lineText = this.Lines[lineIndex];
this.WordWrap = true;

Best Answer

Related Solutions

C# – join lines

C# – How to get the current line in a RichTextBox control

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