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c#jsondatatable

Convert JSON to DataTable


I have JSON in the following format:

[
    {"id":"10","name":"User","add":false,"edit":true,"authorize":true,"view":true},
    {"id":"11","name":"Group","add":true,"edit":false,"authorize":false,"view":true},
    {"id":"12","name":"Permission","add":true,"edit":true,"authorize":true,"view":true}
]

How can I convert that into a C# DataTable object as follows?

---------------------------------------------------------------------
ID    |  Name     |  Add    |   Edit  | View   | Authorize
---------------------------------------------------------------------
10    | User      | true    |  true   | true   |  true
11    | Group     | true    |  true   | true   |  true
12    | Permission| true    |  true   | true   |  true

Solution

  • Deserialize your jsonstring to some class

    List<User> UserList = JsonConvert.DeserializeObject<List<User>>(jsonString);
    

    Write following extension method to your project

    using System.ComponentModel;
    
    public static DataTable ToDataTable<T>(this IList<T> data)
    {
        PropertyDescriptorCollection props =
        TypeDescriptor.GetProperties(typeof(T));
        DataTable table = new DataTable();
        for(int i = 0 ; i < props.Count ; i++)
        {
            PropertyDescriptor prop = props[i];
            table.Columns.Add(prop.Name, prop.PropertyType);
        }
        object[] values = new object[props.Count];
        foreach (T item in data)
        {
            for (int i = 0; i < values.Length; i++)
            {
                values[i] = props[i].GetValue(item);
            }
            table.Rows.Add(values);
        }
        return table;        
    }
    

    Call extension method like

    UserList.ToDataTable<User>();