Index (zero based) must be greater than or equal to zero and less than the size of the argument list

Question

I am trying to create a new table in a database which has a name of checkout and a check number which ive put in {0}. But when I run the program it comes up with the error shown

Answer 1

In this sample you've called String.Format with a string containing place holders {0} but provided no arguments. You need to either remove the place holders or provide an argument to fill in the {0} slot

If you want to literally put {0} into the string then don't use String.Format or properly escape them via {{0}}.

Answer 2

You're calling string.Format including {0} in various places, indicating that you want a placeholder to be replaced... but you're not providing the placeholder value.

You want something like:

tableCreateCommand.CommandText = string.Format("...", checkNumber);

However, I suspect you actually want multiple parameters ({0}, {1}, {2} etc) rather than just one. What SQL are you expecting from the result of string.Format?

Answer 3

You haven't specified any values for the placeholders in String.Format.

string.Format("create table Checkout{0} (ID int, Productlist varchar{0}, 
Date varchar {0}, Time varchar (50), Total double)",  <you need to specify  
the list of values for place holders here...>)

It should be something like this. Note the values specified from second parameter onwards. You can use a constant or some variable in place of constants shown here. The value specified after the comma will replace the placeholders in the index order. {0} will use value 123456, {1} would use 50, {2} would use 65 and {3} would use 75.

string.Format("create table Checkout{0} (ID int, Productlist varchar({1}), 
Date varchar({2}), Time varchar ({3}), Total double)", 123456, 50, 65, 75)

If you need to use the same placeholder for varchar as specified for checkout, it should be like this. I am not sure if this is your intention. Here all place holders {0} will use the same value 100.

string.Format("create table Checkout{0} (ID int, Productlist varchar({0}), 
Date varchar({0}), Time varchar (50), Total double)", 100)

Answer 4

You haven't passed a string to string.Format that it needs to place into your {0} place-holder. Are you missing a variable?

...string.Format("your long format string {0}", someMissingStringVar);