Ensure there is always a value in NumericUpDown?

public void EnsureNumericHasNumber (object sender, EventArgs e)
{

    NumericUpDown numCurrent = (NumericUpDown)sender;

    if (numCurrent.Text == "")
    {
        numCurrent.Value = 0;
    }

}
...

numCurrent.Enter += EnsureNumericHasNumber;
numCurrent.Leave += EnsureNumericHasNumber;
numCurrent.ValueChanged += EnsureNumericHasNumber;