Contents
- 1 How do I return an empty view?
- 2 What is the return value of the operation empty list?
- 3 What is empty result in MVC?
- 4 What is ContentResult in MVC?
- 5 Should I use string empty?
- 6 When to return actionresult instead of specific type?
- 7 What happens when an action is returned in web API?
- 8 When is it better to return NULL or empty?
How do I return an empty view?
You can return EmptyResult to return an empty view. You can also just return null . ASP.NET will detect the return type null and will return an EmptyResult for you. See MSDN documentation for ActionResult for list of ActionResult types you can return.
What is the return value of the operation empty list?
Return Value: The return type of this function is boolean. It returns True is the size of the list container is zero otherwise it returns False.
What does string empty return?
std::string::empty Returns whether the string is empty (i.e. whether its length is 0). This function does not modify the value of the string in any way.
What is empty result in MVC?
What is EmptyResult? The EmptyResult is a class in MVC which does not return anything at client site, its just like Void method . EmptyResult is used when you want to execute logic return inside the controller action method but does not want any result back to the view then EmptyResult return type is very important .
What is ContentResult in MVC?
ContentResult represents a user-defined content type. It is inherited from ActionResult. ContentResult has the following three properties: Content that we want to render on browser. ContentEncoding that defines the encoding of the content.
What is the purpose of string empty?
The value of this field is the zero-length string, “”. In application code, this field is most commonly used in assignments to initialize a string variable to an empty string. To test whether the value of a string is either null or String. Empty, use the IsNullOrEmpty method.
Should I use string empty?
“” is always a new object, which may have to be removed by the garbage collector. Therefore you should always use string. empty instead of “”.
When to return actionresult instead of specific type?
Unexpected conditions can occur during action execution, in which case the specific type isn’t returned. For example, an action’s input parameter may fail model validation. In such a case, it’s common to return the appropriate ActionResult type instead of the specific type.
Can a formula return an empty string or null value?
An empty or Null value literally means “No value.” However, a formula can never return an empty string or Null value. A formula always returns one of three values: a number value; a text value, which may be a zero-length string, or an error value, such as #NUM! or #VALUE.
What happens when an action is returned in web API?
If the action returns an HttpResponseMessage, Web API converts the return value directly into an HTTP response message, using the properties of the HttpResponseMessage object to populate the response. This option gives you a lot of control over the response message.
When is it better to return NULL or empty?
null is the best thing to return if and only if the following following conditions apply: the null result is expected in normal operation. It could be expected that you may not be able to find a person in some reasonable circumstances, so findPerson () returning null is fine.