How to set index to bool datatype

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Hi...
Im new to programming. Im trying sample programs in console application.
While defining a program with bool datatype ,they provide sample code as

C#

public static void Main()
{
   bool content = true;
   bool noContent = false;

   Console.WriteLine("It is {0} that C# Station provides C# programming language content", content);
   Console.WriteLine("The statement above is not {0}", noContent);
}

But im having doubt why cant give as

C#

console.writeline("The statement above is not {1}",nContent);

I tried this and got error as "Index (zero based) must be greater than or equal to zero and less than the size of the argument list."
But not clear in error...guide me

Posted 15-Jun-12 3:02am

Priyaaammu

Updated 15-Jun-12 3:03am

Tim Corey

v2

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2 solutions

Solution 2

The 0 in your format string tells the formatter which parameter to use when building the resulting string. Parameters are indexed from 0 upwards starting with the first one after the string. Since you only have one parameter in both statements it is always at index position 0, you do not have one at position 1

You could write something like:

C++

Console.WriteLine("The parameters are {1} and {0}", noContent, content);

to demonstrate how it selects them.

Posted 15-Jun-12 3:08am

Richard MacCutchan

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Tim Corey · Accepted Answer · 2012-06-15T03:04:00

The reason you are getting that error is because you put a {1} in the Console.WriteLine without having a {0}. You need to start from zero, since it is a zero-based index.

The numbers inside the curly braces represent the values you are going to pass into the string at runtime. For each unique number inside the string, you have to have a variable outside the string that will fill that space. These unique numbers have to start from zero and they have to be sequential. That does not mean that they have to be in order inside your string, just that you can't skip numbers. Here is an example:

C#

Console.WriteLine("This is the {1} variable and this is the {0}", "first", "second");

This line will print out "This is the second variable and this is the first". I specified two variables and I mixed up the order, but it is perfectly fine because I have a zero and I have a one. The zero corresponds to the first variable passed in after my string and the one corresponds to the second variable I passed in after my string.