Increment manually...

Hello!

I have on my form: two button (one for "Add" and other one for "Minus"), one label that will have always the number "1" and one textbox that will have the number 0 in load the form (its can be changed only when I click on one of the button "add" or "minus").

I wrote this code to increment manually step by step one number. For example: if in my textbox content 0 when I click my button its will add "1". When you click again its will add "1" (in textbox will appear "2"). Means 1 plus 1 plus 1 plus 1 plus 1 plus 1 etc.

Then when I click to the minus button its make substration. Until there every think it's ok. But what I need now: I want when I click on the minus button its cannot do this "-1". The only CONDITION is its cannot descrease number (the limit it's "0" never negative number):

This increase and working well:

private void btnplus_consStocks_Click(object sender, EventArgs e)

{

if (string.IsNullOrEmpty(lblIncrement.Text))

{

return;

}

double increment1;

double increment2;

double resultincrement;

increment1 = Convert.ToDouble(lblIncrement.Text);

increment2 = Convert.ToDouble(stockLimitadoUpDown1.Text);

resultincrement = increment1 + increment2;

stockLimitadoUpDown1.Text = resultincrement.ToString();

}

But this its decrease well but when its arrive to "0" when you click again its show "-1" as I already explain:

private void btnmenos_consStocks_Click(object sender, EventArgs e)

{