I'm looking for a proper way to handle empty parameters in a query string. Web Api does not accept query strings as "?id=1&category=", which seems reasonable, but I need to handle this case.
The quick and dirty solution is to use a custom value which will be interpreted on the server side (say "(empty)" for example) but I'm not satisfied with it...
Any suggestion ?
Thanks.
One way I have dealt with this in the past is to make a class to hold your paramaters and then use to ModelBinder attribute to bind your query parameters to the class properties.
So your class would look something like this:
public class QueryParams
{
public string Category {get; set;}
public int Id {get; set;}
}
And the method in your api controller would look like this:
public objectToReturn Get([ModelBinder] QueryParams)
{
//code here
}
This way if one of the parameters in the query string has no value it will simply be ignored.
string.empty to the Category property.
You can use this attribute to achieve what you want.
[DisplayFormat(ConvertEmptyStringToNull = false)]
If "category" is missing then it will be null. Otherwise, if "category=" or "category= " then will be an empty string or whitespace.
