NOT LIKE (SQL) statement equivalent in C#

The .NotContains() should work. Check whether your string really contains what you meant. Or show some short example.

Contains  method return as a boolean. so you just need to verify if it's returned as false for "not contain"

String.Contains Method

https://docs.microsoft.com/en-us/dotnet/api/system.string.contains?view=net-5.0

@Ryan: I was also thinking this way first. However, it is related to the FastReport framework -- the Contains and NotContains are methods related to the framework.

@it_saige: That was exactly my earlier answer, and I have removed that. The reason is that it probably does not fit the situation. See https://www.fast-report.com/documentation/UserManFrNET-en/index.html?dialogfilterbyselectedvalues.htm

@Sabina: Can you clarify your needs with respect to the above answers?

I belive that Ryan and I are basing our assumption that the string class Contains method is being used from this line by the OP:

Apparently NotContains is not a valid method 

The OP made no mention of a or reference to a FastReport framework.

-saige-

@it_saige
@pepr

I have no idea why [datafiled].NotContains ("string")  does not work.
According to the https://www.fast-report.com/documentation/UserManFrNET-en/index.html?dialogfilterbyselectedvalues.htm  (link pepr is referring to )  it should

nonetheless:
I trried
![datafiled].Contains ("string")  
and this elegant and also working very nicely.

Now..
Instead of having to use a complicated statement with &&  /  || : How can I make the string caseinsensitive?
e.g. if the string is "Rabatt" it would work for "RABATT" and "rabatt"??

Thank you for all help
Sabina

https://www.experts-exchange.com/questions/29204562/NOT-LIKE-SQL-statement-equivalent-in-C.html#a43221572 
@it_saige
Works perfect again, thank you.


Thank you all for you help.
Really much appreciated!

Sabina