Dynamic variable in C#?

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猫巷女王i
猫巷女王i 2020-11-30 12:00

Is it possible to use a dynamic variable (not sure about naming) in C#?

In PHP, I can do

$var_1 = \"2\";
$var_2 = \"this is variable 2\";

$test = ${         


        
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  • 2020-11-30 12:03

    No, basically. The compiler doesn't guarantee that method variables will exist (in their form as written), or with names...

    If they were fields (instance or static), then you could use reflection to get the values; but not method variables. For what you want, perhaps use a dictionary as a substitute?

    var vars = new Dictionary<string,object>();
    vars["var_1"] = "2";
    vars["var_2"] = "this is variable 2";
    
    Console.WriteLine(vars["var_" + vars["var_1"]]);
    
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  • 2020-11-30 12:16

    If your var is a class field, then you can use the static GetField method from class Type to obtain field information, such as its current value.

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  • 2020-11-30 12:17

    In C#, you use dictionaries to associate values with strings.

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  • 2020-11-30 12:20

    Not sure if this works with local variables (and most likely it doesn't since they're stored as indexes), but you could access class properties through reflection.

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  • 2020-11-30 12:26

    You are not looking for simple arrays?

    string[] myArray = new string[2];
    
    myArray[0] = "2";
    myArray[1] = "this is variable 2"
    

    Otherwhise dictionary is the way to go.

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