Question

I am trying to understand a piece of code in order to refactor it. There are several verifications for the input value to check if they are valid, and on each verification there is a line of code that I do not understand what it does.Here is the code:

if (IsNotDouble(weight))
{
     MessageBox.Show("Weight must be a numeric value!");
     txtWeight.Select();
     return;
}

txtWeight is a textbox.

Can anyone tell me what txtWeight.Select() does here.I can not understand why this piece of code should be posted here after each time an error is thrown.

Answer 1

It sets the cursor into the textbox where you have to enter the weight.