"Strange" C# syntax

I just saw this in a project I downloaded from Code Project:

base.DialogResult = this.Result != null;

I don't consider myself new to C# but this one is new to me. Can anyon开发者_Python百科e tell me what's going on with this statement?

Edit Great answers, thanks. I've just never used that before.

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If you add parens it's easier to read (and understand). The logical comparison operator != precedes the assignment operator =:

base.DialogResult = (this.Result != null);

The same statement, even more verbose:

if (this.Result != null)
    base.DialogResult = true;
else
    base.DialogResult = false;

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this.Result != null evaluates to a boolean, true or false.

The result of the evaluation is set in the DialogResult member of the base class.

Not strange at all, it's just an assignment.

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The != (not equal) operator has precedence over the = (assignment) operator.

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Thats simple, basically it assigns the result of the expression

this.Result != null

to

base.DialogResult

the expression uses the in-equality operator, so it returns either true or false, depending on wether this.Result is null or not

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That means:

bool g = (this.Result != null);
this.DialogResult = g;