Basic Calculator Program in using C#

protected void ButtonNumberEqual_Click(object sender, EventArgs e)
{
    try
    {
        string Input = DisplayTextBox1.Text;
        DataTable table = new DataTable();
        Object answer;
        answer = table.Compute(Input, null);
        Answer.Text = answer.ToString();
        DisplayTextBox1.Text = DisplayTextBox1.Text + " = " + answer.ToString();
    } catch
    {
        Answer.Text = "ERROR :(";
    }
}