a.Amount += 10;

[Gustaf Liljegren]

I guess this is a newbie question. I got an Account class with an Amount
property, like this:

public float Amount
{
get { return amount; }
set { amount = value; }
}

I need to add to this amount sometimes, but when I write like this

a.Amount += 10;

I get the error "The left-hand side of an assignment must be a variable,
property or indexer". Since a.Amount is a property, I don't understand the
complaint. Is this supposed to work or not?

Thanks,

Gustaf

[Jon Skeet [C# MVP]]

Gustaf Liljegren <gu**************@bredband.net> wrote:

I guess this is a newbie question. I got an Account class with an Amount
property, like this:

public float Amount
{
get { return amount; }
set { amount = value; }
}

I need to add to this amount sometimes, but when I write like this

a.Amount += 10;

I get the error "The left-hand side of an assignment must be a variable,
property or indexer". Since a.Amount is a property, I don't understand the
complaint. Is this supposed to work or not?

Have you *actually* got the code above, or have you got something like:

((MyType)a).Amount += 10;

?

Your code should work, and here's a simple test program to show it
working:

using System;

class Test
{
float amount=0;
public float Amount
{
get { return amount; }
set { amount = value; }
}

static void Main()
{
Test a = new Test();
a.Amount += 10;
}
}

Could you product a similar short but complete program that
demonstrates the error?

--
Jon Skeet - <sk***@pobox.com>
http://www.pobox.com/~skeet
If replying to the group, please do not mail me too

[Gustaf Liljegren]

"Jon Skeet [C# MVP]" <sk***@pobox.com> wrote:

Have you *actually* got the code above, or have you got something like:

I found it. Account wasn't a class as I said, but a struct. I don't know
why, but I only needed to change "struct" to "class" to get it working. :-)
Thank you very much for the enlightening example anyway.

Gustaf