You can use the “Find and Replace” feature of Visual Studio to delete matching lines.
The key is to match the whole line including the end of line character as well. You can do this in wildcard or regular expression mode. In wildcard mode, begin the expression with * and end the expression with *\n. The asterisks will match any number of characters, and the \n will match the end of line character.
In your case, your find query would be “*.BackColor = System.Drawing.Color.Yellow;*\n“. The replace field should then be left blank.
To enable wildcard mode, select ‘Wildcards’ in the ‘Use:’ field of the ‘Find options’ section of the ‘Find and Replace’ dialog.
