C#

// catch key presses on the text box:
private void textBox_KeyPress(object sender, KeyPressEventArgs e)
{
    if (!e.KeyChar.Equals(Keys.Enter))
    {
        // update ListItem being shown();
    }
    else if (listBox.SelectedIndex != -1)
    {
        // update Rich Text From List
    }
    else
    {
        // update Rich Text From text
    }
}

// user clicks the list:
private void listBox_DoubleClick(object sender, EventArgs e)
{
    // update Rich Text From List
}

Umangj wrote:

heyyy pls help me...

abhishek29 wrote:

I have to submit my project on 10 April