Pour obtenir une clé
d'essai remplissez le formulaire ci-dessous
Demandez des tariffs
Nouvelle licence
Renouvellement de licence
--Sélectionnez la devise--
USD
EUR
RUB
* En cliquant sur ce bouton, vous acceptez notre politique de confidentialité

Free PVS-Studio license for Microsoft MVP specialists
To get the licence for your open-source project, please fill out this form
** En cliquant sur ce bouton, vous acceptez notre politique de confidentialité.

I am interested to try it on the platforms:
** En cliquant sur ce bouton, vous acceptez notre politique de confidentialité.

Message submitted.

Your message has been sent. We will email you at


If you haven't received our response, please do the following:
check your Spam/Junk folder and click the "Not Spam" button for our message.
This way, you won't miss messages from our team in the future.

>
>
>
V3138. String literal contains potentia…
Analyzer diagnostics
General Analysis (C++)
General Analysis (C#)
General Analysis (Java)
Diagnosis of micro-optimizations (C++)
Diagnosis of 64-bit errors (Viva64, C++)
Customer specific requests (C++)
MISRA errors
AUTOSAR errors
OWASP errors (C#)
Problems related to code analyzer
Additional information
Contents

V3138. String literal contains potential interpolated expression.

10 Jui 2019

The analyzer has detected a string that could contain an interpolated expression, but there is no interpolation character '$' before the literal.

Consider the following snippet:

string test = "someText";
....
Console.WriteLine("{test}");

Because of the absent '$' character before the string declaration, the console will simply output the name of the variable. This is the correct notation:

string test = "someText";
....
Console.WriteLine($"{test}");

Strings with expressions inside them are also treated as potential errors:

int a = 1;
int b = 1;
string test = "{a:c} test";
string test1 = "{a+b} test1 {{{ a + b }}}";

However, an exception is made for string literals passed as arguments to methods whose other arguments are variables contained in that same literal.

string test1 = ReplaceCustom("someText {test}", "{test}", test);

In cases like this, the expression in the literal is often a placeholder for the value of the variable passed along with it to the same method.

You can look at examples of errors detected by the V3138 diagnostic.

Unicorn with delicious cookie
Nous utilisons des cookies pour améliorer votre expérience de navigation. En savoir plus
Accepter