Your JSON object in this case is a list. JSON is almost always an object with attributes; a set of one or more key:value pairs, so you most likely see a dictionary:

{ "MyStringArray" : ["somestring1", "somestring2"] }

then you can ask for the value of "MyStringArray" and you would get back a list of two strings, "somestring1" and "somestring2".

Hi @Julio Bello ,

[{"X1":"x1","Y1":"y1","Z1":"z1"},{"X2":"x2","Y2":"y2","Z2":"z2"},{"X3":"x3","Y3":"y3","Z3":"z3"},...]

From the above JSON string, we can see that each property (key-value pair, such as "X1":"x1", "X2":"x2") has a different property name or key value, in this scenario the property is not fixed so we can directly use it as the class's property.

So, for the above JSON string, I suggest you could deserialize it uses a Dictionary, you can refer to the following sample code:

       //required using System.Text.Json;  

        var values = new List>()  
        {  
              new Dictionary()  
                {  
                    {"X1", "x1"},{"Y1", "Y1"},{"Z1", "Z1"}  
                },  
                  new Dictionary()  
                {  
                    {"X2", "x2"},{"Y2", "Y2"},{"Z2", "Z2"}  
                }  
        };   
        var jsonstring = JsonSerializer.Serialize(values);  
        //jsonstring: [{"X1":"x1","Y1":"Y1","Z1":"Z1"},{"X2":"x2","Y2":"Y2","Z2":"Z2"}]  
        var reult1 = JsonSerializer.Deserialize>>(jsonstring);  

        var test = new TestModel()  
        {  
            Item = new List>()  
            {  
                new Dictionary()  
                {  
                    {"X1", "x1"},{"Y1", "Y1"},{"Z1", "Z1"}  
                },  
                  new Dictionary()  
                {  
                    {"X2", "x2"},{"Y2", "Y2"},{"Z2", "Z2"}  
                }  
            }  
        };  

        var jsonstring2 = JsonSerializer.Serialize(test);  
        //josnstring2: {"Item":[{"X1":"x1","Y1":"Y1","Z1":"Z1"},{"X2":"x2","Y2":"Y2","Z2":"Z2"}]}  

        var result2 = JsonSerializer.Deserialize(jsonstring2);  

The TestModel

public class TestModel  
{  
    public List> Item { get; set; }  
}  

The output is like this:

And this sample code:

        var jsonstr = "[{\"X1\":\"x1\",\"Y1\":\"Y1\",\"Z1\":\"Z1\"},{\"X2\":\"x2\",\"Y2\":\"Y2\",\"Z2\":\"Z2\"}]";  

        var result3 = JsonSerializer.Deserialize>>(jsonstr);  

The result:

After that you can find the data from the Dictionary. More detailed information about Dictionary, see Dictionary Class

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Best regards,
Dillion