CODEWITHSUNDEEP
c#.net
Markiian Benovskyi
Markiian Benovskyi

Reputation: 2161

Is it possible to get name of variables passed as `params object[]`?

I wonder, if it is possible to get the names of variables passed to method via params object[] values?

The signature of method looks like this:

public static void ExecuteSafely(
    Action callback,
    string command,
    params object[] values)
{
    // code here
}

I was trying to get the values with nameof(values[index]), but it tells me:

Expression does not have a name.

The point of this is to dynamically add parameters to SQL command, and it would be easier and less parameters to pass if I could add them based on the names of params, but the number of those params should be variable.

Can you recommend any solution or another approach to this?

Upvotes: 4

Views: 1906

Answers (1)

Tim Schmelter
Tim Schmelter

Reputation: 460238

No, that's not possible. nameof is a compile time feature and you want the name of variables at runtime(an array could be created dynamically).

If names are important for you use a Dictionary<string, object> or with C#7 a named tuple:

public static void ExecuteSafely(Action callback, string command, 
    params (string name, object value)[] commandParameters)
{
    foreach ((string Name, object Value) commandParameter in commandParameters)
    {
        string name = commandParameter.Name;
        object value = commandParameter.Value;
        // ...
    }
}

Call it in this way:

ExecuteSafely(yourAction, "CreateUser", ("UserName", "Tim Schmelter"));

Upvotes: 10

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