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I have a C# method with a variable length argument list declared using the params keyword:
public void VariableLengthParameterFunction (object firstParam,
params object[] secondParam)
Is there any way of using named parameters when calling the method?
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By using the params keyword, you can specify a method parameter that takes a variable number of arguments. The parameter type must be a single-dimensional array. No additional parameters are permitted after the params keyword in a method declaration, and only one params keyword is permitted in a method declaration.
The parameter in C refers to any declaration of variables within the parenthesis during the function declaration. These are listed in the function's definition, separated by commas. Example of Parameter. int add (int a, int b) { int c = a + b; return c; }
A parameter is a special kind of variable in computer programming language that is used to pass information between functions or procedures. The actual information passed is called an argument.
The "params" keyword in C# allows a method to accept a variable number of arguments. C# params works as an array of objects. By using params keyword in a method argument definition, we can pass a number of arguments.
You can call it using named parameter like this:
VariableLengthParameterFunction(
secondParam: new object[] { 5, 7, 3, 2 },
firstParam: 4);
EDIT: I assumed you want to access the params object[] secondParam array using named parameters.
Currently only the code inside the method knows what secondParam may contain. From just the method signature there's no link between the object[] and names/types for each element within that array.
Furthermore, since you're using the params keyword, there is no way of supplying secondParam[1] without supplying a value for secondParam[0] (or null).
Perhaps you could create an overload which takes named parameters, and which creates the object[] and then calls this method. Or the other way around.
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