how to check Attribute properties is contain jsonValue Key without using if else

Question

I'm new in asp.net, I have a problem with structs

This is my struct:

public struct Attribute
{
    public const string Name = "name";
    public const string Desc= "short_description";
    
    public const string Width= "description";
    public const string Height= "package_length";
}

This is my code :

 var jsonValue = JsonConvert.SerializeObject(ValueFromAPI);

Dictionary<string, object> dictValues = JsonConvert.DeserializeObject<Dictionary<string, object>>(jsonValue );


foreach (var dictValue in dictValues )
{
    if(dictValue.Key == Attribute.Name)
    {
        //mycode
    }
    else if(dictValue.Key == Attribute.Desc)
    {
        //mycode
    }
    else if(dictValue.Key == Attribute.Width)
    {
            //mycode
    }
    else if(dictValue.Key == Attribute.Heigth)
    {
        //mycode
    }
}

how to check Attribute properties is contain jsonValue Key without using if else because I have a lot of attribute properties, for now, I check one by one using if else

Thanks!

I've removed the ASP.NET tag because this question doesn't seem unique to ASP.NET (there is nothing specifically related to ASP.NET in your question). — ProgrammingLlama, Jul 04 '22 at 15:21
@DiplomacyNotWar ok thanks, do you have solution for my case ? — adian, Jul 04 '22 at 15:22
No, because I don't really understand what you're doing. It would really help clarify the goal if you showed your existing if/else code. We could put your string values into a `List` and loop through, but if your code isn't just `if (dictValue.ContainsKey(Attribute.Name)) { Console.WriteLine("Found {0}", Attribute.Name); }` which could easily be rewritten as a loop, we'll need to understand more about the goal. — ProgrammingLlama, Jul 04 '22 at 15:22
You should provide more information. What json are you deserializing? What are you expecting? What are you getting and how is it different? It looks like your code *should* deserialize to a `dictionary` of `string`, `object`. Is that not what you want? What does your `struct` have to do with anything? You're not using it? I suspect you actually want to create a *`Class`* to deserialize to, but it's hard to help without more info. — Jonathan, Jul 04 '22 at 15:30
That's exactly what I expected you were doing, without the part that clarifies what `//mycode` should do, which is ultimately what I was asking for. — ProgrammingLlama, Jul 04 '22 at 15:31
i was edited my question, so i don't wont using if else becouse i have lot of properties in struct, is is posible ? — adian, Jul 04 '22 at 15:32
`if (new [] { "name", "short_description", "description", "package_length" }.Contains(dictValue.Key)) { //mycode }` <-- I imagine this won't suffice? — ProgrammingLlama, Jul 04 '22 at 15:34
You posted your code after my comment. Are you doing anything meaningful in the `//mycode` sections? ie more than just assigning the values to something? If you're assigning values, you should create a class and deserialize to *that*. If you're doing something more, there are options. Are you sure each `Dicionary` key is present? Just call the value by the `key`. Not sure, try a `switch on`. — Jonathan, Jul 04 '22 at 15:35
So `object value = dictValues.FirstOrDefault(dv => new [] { "name", "short_description", "description", "package_length" }.Contains(dv.Key)).Value` ? — ProgrammingLlama, Jul 04 '22 at 15:37
More an more I'm thinking you just want to deserialize your `json` into a class. `struct` isn't the way to do that. See: https://learn.microsoft.com/en-us/dotnet/standard/serialization/system-text-json-how-to?pivots=dotnet-6-0 — Jonathan, Jul 04 '22 at 15:37
When I ask for your goal, I don't want you to reiterate that you want a different approach to the if/else statement. My goal in putting fuel in my car isn't that I want to have a car with fuel in it. My goal with driving my car isn't that I want to go for a drive. My goal is that I want to go from A to B. The constraint of your question is that you want to get a specific value from the dictionary based on a key, for each of the possible keys you have. You can either use `if (dictValues.TryGetValue(key, out var value))` or the loop as you have it. There might be a better way overall to — ProgrammingLlama, Jul 04 '22 at 15:39
do what you are actually trying to do, but you aren't telling us what that is. — ProgrammingLlama, Jul 04 '22 at 15:39
i wont get the value where the key is not include in the properties, — adian, Jul 04 '22 at 15:39
https://stackoverflow.com/questions/15253875/deserialize-json-with-known-and-unknown-fields ? Also: [`JsonExtensionData`](https://www.newtonsoft.com/json/help/html/DeserializeExtensionData.htm) — ProgrammingLlama, Jul 04 '22 at 15:44
Are you concerned about misspelling of `Height` as `Heigth`? — Wyck, Jul 04 '22 at 16:01
@DiplomacyNotWar i think is not what i want, because i just want get the value from json wher the key is alway diferent and i don't know how much unknow key, — adian, Jul 04 '22 at 16:05
That would read all unknown keys into a dictionary, and all known keys into their corresponding properties. It sounds like exactly what you want. — ProgrammingLlama, Jul 04 '22 at 16:07
@DiplomacyNotWar so how can i get the key to?, because is need it — adian, Jul 04 '22 at 16:11

score 0 · Answer 1 · answered Jul 04 '22 at 16:24

0

The best way to write this logic would be:

var jsonValue = JsonConvert.SerializeObject(ValueFromAPI);
Dictionary<string, object> dictValues = JsonConvert.DeserializeObject<Dictionary<string, object>>(jsonValue );
foreach (var dictValue in dictValues.Keys )
{
  switch(dictValue){
     case Attribute.Name:
     //business logic
     break;
     case Attribute.Desc:
     //business logic
     break;
     case Attribute.Width:
     //business logic  
     break;
     case Attribute.Height:
     //business logic
     break;
  }
}

answered Jul 04 '22 at 16:24

Niraj Bihani

124
4

As it’s currently written, your answer is unclear. Please [edit] to add additional details that will help others understand how this addresses the question asked. You can find more information on how to write good answers [in the help center](/help/how-to-answer). – Community Jul 05 '22 at 01:13

how to check Attribute properties is contain jsonValue Key without using if else

1 Answers1