How to add a C# data class with array to store data for a WPF app

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I want to have a data c# class in my wpf project to store simple string and number data. Anyone have a good example or idea?

What I have tried:

    internal class Att
    {
        BillInfo Aug2022W = new BillInfo(91.93M, "August 2022");//the data in class object
        BillInfo Aug2022I = new BillInfo(66.00M, "August 2022");// form instantiating with 
        BillInfo Sept2022W = new BillInfo(91.82M, "September 2022");// constructor from
        BillInfo Sept2022I = new BillInfo(66.00M, "September 2022");// BillInfo class
        BillInfo Oct2022W = new BillInfo(91.82M, "October 2022");
        BillInfo Oct2022I = new BillInfo(66.00M, "October 2022");
        BillInfo Nov2022W = new BillInfo(91.82M, "November 2022");
        BillInfo Nov2022I = new BillInfo(66.00M, "November 2022");
        BillInfo Dec2022W = new BillInfo(00.01M, "December 2022");
        BillInfo Dec2022I = new BillInfo(66.00M, "December 2022");
        BillInfo Jan2023W = new BillInfo(00.01M, "January 2023");
        BillInfo Jan2023I = new BillInfo(00.01M, "January 2023");
        BillInfo Feb2023W = new BillInfo(84.28M, "February 2023");
        BillInfo Feb2023I = new BillInfo(00.01M, "February 2023");
        BillInfo March2023W = new BillInfo(84.23M, "March 2023");
        BillInfo March2023I = new BillInfo(60.32M, "March 2023");

        BillInfo[] ArrayBillInfo = new BillInfo[16]; // making array of class objects     
        
        public BillInfo RonsMethod()
        {
            ArrayBillInfo[0] = Aug2022W; // method to assign each bill object data to 
            ArrayBillInfo[1] = Aug2022I; // the object array
            ArrayBillInfo[2] = Sept2022W;
            ArrayBillInfo[3] = Sept2022I;
            ArrayBillInfo[4] = Oct2022W;
            ArrayBillInfo[5] = Oct2022I;
            ArrayBillInfo[6] = Nov2022W;
            ArrayBillInfo[7] = Nov2022I;
            ArrayBillInfo[8] = Dec2022W;
            ArrayBillInfo[9] = Dec2022I;
            ArrayBillInfo[10] = Jan2023W;
            ArrayBillInfo[11] = Jan2023I;
            ArrayBillInfo[12] = Feb2023W;
            ArrayBillInfo[13] = Feb2023I;
            ArrayBillInfo[14] = March2023W;
            ArrayBillInfo[15] = March2023I;

            return ArrayBillInfo[15]; // return just the most recent array location
        }

        public BillInfo[] RonsMethod2() // return whole object array
        {
            
            return ArrayBillInfo;
        }}}

internal class BillInfo
    {
        public decimal Amount { get; set; }  //   object for data object array
        public string Date { get; set; }

        public BillInfo(decimal amount, string date)
        {
            Amount = amount;
            Date = date;
        }}

Posted 21-Apr-23 14:26pm

ronCodeTracker

Updated 21-Apr-23 21:44pm

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George Swan · Accepted Answer · 2023-04-21T21:44:00

My suggestion would be to access your raw data from a collection that implements IEnumerable to avoid having to hand code everything. I would use DateTime to store the date rather than a magic string. The necessary conversion can be handled in the BillInfo constructor.

C#

public class BillInfo
   {
       public DateTime Date { get; set; }
       public decimal Amount { get; set; }
       private readonly CultureInfo cultureInfo = new("en-GB");
       public BillInfo(decimal amount, string dateStr)
       {
           Amount = amount;
           Date = DateTime.Parse($"1 {dateStr}", cultureInfo);
       }
   }

So the basic set up would be along these lines.

C#

private static void Main()
   {
       List<(decimal amount, string dateStr)> RawData = new()
       {
           (91.93M, "August 2022"),
           (66.00M, "August 2022"),
           (91.82M, "September 2022"),
           (66.00M, "September 2022"),
           (91.82M, "October 2022"),
           (66.00M, "October 2022")

       };
       List<BillInfo> billInfos = new();
       foreach ((decimal amount, string dateStr) in RawData)
       {
           billInfos.Add(new BillInfo(amount, dateStr));
       }
       //To convert to array if needed
       BillInfo[] billInfoArray = billInfos.ToArray();
       //To retun the last item use
       var lastItemAdded = billInfos.Last();

       Console.ReadLine();
   }

Graeme_Grant · Accepted Answer · 2023-04-21T14:42:00

Solution 1

If the data is common across the app, use a static class. I use the DataStore suffix to clarify what it is for. For Example:

C#

public static class AppDataStore
{
    public ApplicationTheme Theme { get; set; }

    public UserProfile User { get; set; }
{

Now to access the user, from anywhere in the app, all I have to do is:

C#

string userName = AppDataStore.User.Name;

Posted 21-Apr-23 14:42pm

Graeme_Grant

Comments

ronCodeTracker 21-Apr-23 22:03pm

Is ApplicationTheme and UserProfile classes not shown here?

Graeme_Grant 21-Apr-23 22:05pm

It is a mock ... an example, so no, they do not exist. All that I am demonstrating is how to share common themed data ... you may have another for common billing information that you want to share across the app in BillingDataStore...