evaluating else if after an if condition is true

Question

Consider this snippet:

private void button1_Click(object sender, EventArgs e)
{
    if (textBox1.MaxLength > 0)
    {
        textBox2.Text = Convert.ToBoolean(Math.Sqrt(textBox1.MaxLength)).ToString();
    }
    else if (textBox1.MaxLength < 32768)
    {
        textBox2.Text = Convert.ToBoolean(Math.Sqrt(textBox1.MaxLength)).ToString();
    }                
}

Why is it not evaluating the second condition (the lesser than condition)? It's also true, isn't it?

If I have to make the second one to work in the same condition, what minor change must be made?

Answer 1

The second condition isn't being checked because an else statement will only be evaluated when the preceding conditions are evaluated to be false. There are several ways to fix this, some of which are shown in other answers. One such way is to use a single if statement, which combines both conditions:

if (textBox1.MaxLength > 0 && textBox1.MaxLength < 32768)
{
    textBox2.Text = Convert.ToBoolean(Math.Sqrt(textBox1.MaxLength)).ToString();
}

Answer 2

else if is only checked if the first condition isn't satisfied.

If you want both of them to be true, you should do

if(textBox1.MaxLength > 0 && textBox1.MaxLength < 32768)
{
   // do stuff here
}