How to use System.String?

yukon · 2012-11-23

Hi Team,

I'm trying to use System.String in NAV2009-R2. I can't assign value to System.String variable. I refered the function "IsValidFileName" of NAV 2013 CU-419(File Management). But 2013 can assign the value. Why can't use in NAV2009-R2? Is it something wrong in my code?

Name	   DataType	Subtype	Length
String	   DotNet	'mscorlib, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089'.System.String

String := 'balabala';	
---------------------------
Microsoft Dynamics NAV Classic
---------------------------
Assignment is not allowed for this variable.

Best Regards,
Yukon

SigGunn · 2012-11-23

Try adding this code:

IF ISSERVICETIER THEN
  string := 'balabala'  // should work if running on the application tier, untested
ELSE
  MESSAGE('Classic client does not support dotnet, use RTC');

kine · 2012-11-25

Have you tried to use Constructor first to create the string object?

yukon · 2012-11-25

kine wrote:

Have you tried to use Constructor first to create the string object?

Yes I did. Can't compile object.

Regards,
Yukon

kine · 2012-11-25

Hmmm... yes, the problem with abiquity in different forms of the constructor...

There are changes in the dotnet interop in NAV 2013 and it looks like they solved some basic problems of the DotNet from 2009. Looks like you hit one...

yukon · 2012-11-26

Hi Kine,

I think some .net variable cannot use directly in NAV. I found at this blog http://navigateintosuccess.com/blog/generics-in-net-interop-for-nav-2013.

Best Regards,
Yukon

Capone · 2015-09-21

I had the same scenario that I needed System.String and the method replace.

But I managed to find a workaround by using stringbuilder instead

StringBuilder := StringBuilder.StringBuilder(String);
StringBuilder.Replace('MyOldValue', 'MyNewValue');
F.WriteAllText(FileName, Stringbuilder.ToString);

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How to use System.String?

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