C#

Deresen wrote:

"Do we have to write articles which will provide you the information to use google?"

public Form1()
        {
            InitializeComponent();
            richTextBox1.DragDrop += new DragEventHandler(richTextBox1_DragDrop);
            richTextBox1.DragEnter += new DragEventHandler(richTextBox1_DragEnter);

        }

        void richTextBox1_DragEnter(object sender, DragEventArgs e)
        {
            throw new Exception("The method or operation is not implemented.");
        }

        void richTextBox1_DragDrop(object sender, DragEventArgs e)
        {
            throw new Exception("The method or operation is not implemented.");
        }