getting error when i try this code

Question

double days = Convert.ToDouble(txt_working.Text);
double sundays = Convert.ToDouble(txt_netpay.Text);
double a = Convert.ToDouble(txt_basicscale.Text);
txt_basicamount.Text = Convert.ToDouble((a / days) * sundays).ToString();

when i try this above code i got error as

in second line input sting was not in a correct format.

please help me

Vulpes · Answer

Narasiman I've altered your original code to use double.TryParse. If a textbox contains an invalid number then 0 is assigned to the 'out' parameter rather than an exception being thrown. You also need to make sure that days is non-zero otherwise you'll get an infinite answer when you attempt to divide by it! double days sundays a; double.TryParse(txt_working.Text out days); double.TryParse(txt_netpay.Text out sundays); double.TryParse(txt_basicscale.Text out a); if (days != 0) { txt_basicamount.Text = (a / days * sundays).ToString(); } else { txt_basicamount.Text = 0; // say }

Praveen Moosad · Answer

@narasiman You don't have to open a new thread for code from previous thread. If you have problem in solutions provided by some user then reply in the same thread. Also you don't have to post the same question multiple times.

Satyapriya Nayak · Answer

Narasiman Normal 0 Why repeatedly you are doing the same mistake by creating new thread rather discussing with the same thread itself. http://www.c-sharpcorner.com/Forums/Thread/178649/salary-amount-to-be-calculated.aspx I think your questions you are posting are not clear enough for the members to give suitable answers. So please sure that when you are posting any question elaborate it deep and clearly. Thanks

WH Xu · Answer

you can use tryparse() method .

Vulpes · Answer

It means that what's in txt_netpay.Text can't be converted to a double. The most likely reason is that the textbox is empty. You therefore need to check for this or use the double.TryParse() method rather than Convert.ToDouble. The same applies to the other two textboxes as well.