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{0} Meaning

 
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{0} Meaning
gbertoli3
15 Oct, 2008 - 06:19 AM
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I have seen this a lot; like in:
csharp

Console.WriteLine("Line Number {0}" + linenumber);


What exactly is {0} used for?
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baavgai
RE: {0} Meaning
15 Oct, 2008 - 07:05 AM
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Your syntax is a hair off. It's probably clearer if you have more than one.

csharp

Console.WriteLine("row, col: {0},{1}", row, col);


This prints exactly the same thing:
csharp

Console.WriteLine("row, col: {1},{0}", col. row);


The {0} is a place holder for the first argument that follows, {1} is the next and so on. It's similar to %s or %d in C's printf, but it's not type specific unless you start using type modifiers.
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gbertoli3
RE: {0} Meaning
15 Oct, 2008 - 02:35 PM
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Oh Ok so it is basically for simplicity.

So you don't have to do:
csharp

MessageBox.Show("col: " + col + " row: " + row);
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wingot
RE: {0} Meaning
15 Oct, 2008 - 03:42 PM
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Yeah, exactly. It just makes the string easier to read since it is less broken up (in the same way that i++ is easier to read than i = i +1 in a for loop/in the middle of a block).
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