Find centralized, trusted content and collaborate around the technologies you use most. Connect and share knowledge within a single location that is structured and easy to search. I want to create a function to convert any null value e. I know there are methods such as if value!
Empty but is there a way to pass null to a method e. Value on which case, you can simply call. ToString and it will return "".
ToString object converts to string. If the object is null , Convert. ToString converts it to an empty string. ToString on an object with a null value throws a System. You can use Convert. ToString object value. You need to cast your value to an object first, otherwise the conversion will result in a null.
If you pass a System. Value to Convert. ToString it will be converted to an empty string too. It is possible to use the "?. InterpolatedExpression produces a result to be formatted. A string representation of the null result is String. This will never throw an exception and always return an empty string if null and doesn't require if then logic. ToString method. Stack Overflow for Teams — Collaborate and share knowledge with a private group. Create a free Team What is Teams? Collectives on Stack Overflow.
Learn more. A function to convert null to string Ask Question. Asked 9 years, 4 months ago. Active 5 months ago. Viewed k times. I tried the above but it says not a nullable type. Thanks in advance. Umar Abbas 4, 1 1 gold badge 16 16 silver badges 22 22 bronze badges. You say "e. And what are you using to read from a database? It is in the sys. Show 1 more comment. Sign up or log in Sign up using Google. Sign up using Facebook.
Sign up using Email and Password. Post as a guest Name. Email Required, but never shown. The Overflow Blog. Podcast Making Agile work for data science. Stack Gives Back Featured on Meta. New post summary designs on greatest hits now, everywhere else eventually. Related 4. Hot Network Questions. Question feed. RooiWillie RooiWillie 2, 1 1 gold badge 30 30 silver badges 36 36 bronze badges. ToString null returns a null value, not an empty string this can be verified by calling Convert.
Empty returns true see this answer. HeyJude - well spotted, thank you! I'll update accordingly. Concat "hello", snull. Format, String. Convert, String. Concat all handle null objects nicely. James James 71 1 1 silver badge 1 1 bronze badge. Can you show us this behind the scenes because I surely can't find it in mscorlib So you mean String utility methods just convert it to 'null' string if value returned is null?
RobertKoritnik Use ildasm. I'm sorry but, this is gold when you have nullable integers. As others have said, the exception is raised because a method is called on a null reference. That is the obvious part.
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