RichTextBox.Find method fails to find known string.

Mark F

In the following method, the 'startPos' variable always contains -1 when searching for a string that is known to exist within the RichTextBox.

    private string GetHeadingInnerHtml()
    {
        int startPos = myRich.Find("", 0, RichTextBoxFinds.None);
        int endPos = 0;

        if (startPos >= 0)     // Fails here! startPos value is 0xffffffff
        {
            endPos = myRich.Find("", startPos + 6, RichTextBoxFinds.None);
            myRich.SelectionStart = startPos;
            myRich.SelectionLength = ( endPos - startPos );
            return myRich.SelectedText;
        }
        return string.Empty;
    }

:wtf: Any ideas why? Thanks.

Lev Danielyan

What's your source text? The Find method which accepts string will not find text, if it is more than on one line.

Regards, Lev

realJSOP

If it returns -1, it ain't there. Are you sure there's no Text property in the myRich object?

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Pete OHanlon

This worked OK for me. I put the following text into a RTB and it found the details with no problem. <html> <head> <some tesxttlkajsdlfj asdf> </head> </html> If you debug your application, what does myRich.Text contain when you step into this method?

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Mark F

I set a watch for the value of myRich.Text property. Then I noticed that an earlier called method cutoff part of the <head> element's starting tag so naturally the Find method did not find it. :doh: Thanks, Mark