Newbie operator question

[Anders Jansson]

Hi,
Trying to use and "AND" operator comparing strings in C#. The following code
doesnt work (mtch1_ etc is of type String):

if (mtch1_ = "" & mtch2_ = "" & mtch3_ = "" & mtch4_ = "")



What should I use instead?

Best Regards

Anders

 

[Joakim Karlsson]

Try and change that to:

if (mtch1_ == "" && mtch2_ == "" && mtch3_ == "" && mtch4_ == "")

/Joakim

 

[Anders Jansson]

Worked! Thanks!

Try and change that to:

if (mtch1_ == "" && mtch2_ == "" && mtch3_ == "" && mtch4_ == "")

/Joakim

 

[Ciaran]

Just to explain the fix.
single equals (=) is assignment (returns value on the right hand side)
double equals (==) is comparison (returns boolean signifying equality)

Ciaran

 

[James Curran]

Just to explain the other half of the fix:
single ampersand (&) is bit-wise anding (3 & 2 == 1)
double ampersand (&&) is logical anding (true && false == false)

--
Truth,
James Curran
[erstwhile VC++ MVP]
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