Passing values to the class in a loop

Question

I need to pass the JSON to a vendor and the vendor gives the GUID back, In order to achieve this, I declared following class:

public class PayParam
{
        public LineItemParam[] LineItems { get; set; }
        public string Phone { get; set; }
        public string Email { get; set; }
        public string CustomerId { get; set; }
        public string CompanyName { get; set; }
}
 public class LineItemParam
    {
        public string Sku { get; set; }
        public string Description { get; set; }
        public decimal UnitPrice { get; set; }
        public int Quantity { get; set; }
    }

I am constructing a JSON by passing values to the class like this:

 var parameters = new PayParam();
	  MailingInfo IdData = scData.FindData();
	  
	  string[] desc = {"Test1", "Test2", "Test3};
      int[] value={12.00. 13.00, 18.00}
	  parameters = new PayParam
      {
	     Phone = IdData.PhoneNumber,
         Email = IdData.Email.ToUpper(),
	     CustomerId = "1234",
		 CompanyName = "TEST NAME",
	  },
	    LineItems = new LineItemParam[]
          {
                  new LineItemParam
                          {
                              Sku = GetSKU(),
                              Description = "Test Desc",
                              UnitPrice =  12.00,
                              Quantity = 1
                          }
		   }
		   

	   The problem is, I need to pass multiple lineItems for each description so I need to do something like this:

```powershell
parameters = new PayParam
      {
	     Phone = IdData.PhoneNumber,
         Email = IdData.Email.ToUpper(),
	     CustomerId = "1234",
		 CompanyName = "TEST NAME",
	  },
	    foreach(var de in desc)
		   {
	           LineItems = new LineItemParam[]
               {
                  new LineItemParam
                          {
                              Sku = GetSKU(),
                              Description = de,
                              UnitPrice =  value,
                              Quantity = 1
                          }
		       }
		   }

	   The above code is not working. It only works if I put separate line item like this:

	   
```


```powershell
parameters = new PayParam
      {
	     Phone = IdData.PhoneNumber,
         Email = IdData.Email.ToUpper(),
	     CustomerId = "1234",
		 CompanyName = "TEST NAME",
	  },
	    
	           LineItems = new LineItemParam[]
               {
                  new LineItemParam
                          {
                              Sku = GetSKU(),
                              Description = "Test1",
                              UnitPrice =  12.00,
                              Quantity = 1
                          },
				 new LineItemParam
                          {
                              Sku = GetSKU(),
                              Description = "Test2",
                              UnitPrice =  13.00,
                              Quantity = 1
                          }, 
						  
		       }
```

```sql
	 I want to pass these lineItems in a loop and not write them individually. If I write the lineItem individually, my code works, but if I pass them in a loop then it does not work.
```

Answer 1

Hi @Anjali Agarwal,

I noticed that your problem has been solved on other platforms.

I have another method here, I hope it will be useful to you. Use List<LineItemParam>.

var parameters = new PayParam();
List<LineItemParam> items = new List<LineItemParam>();
MailingInfo IdData = scData.FindData();
string[] desc = { "Test1", "Test2", "Test3" };
double[] value = { 12.00, 13.00, 18.00 };
for (int i = 0; i < desc.Length; i++)
{
    items.Add(new LineItemParam
    {
        Sku = GetSKU(),
        Description = desc[i],
        UnitPrice = 12.00,
        Quantity = 1
    });
}
parameters = new PayParam
{
    Phone = IdData.PhoneNumber,
    Email = IdData.Email.ToUpper(),
    CustomerId = "1234",
    CompanyName = "TEST NAME",
    LineItems = items,
};

 public class PayParam
 {
     public List<LineItemParam> LineItems { get; set; }
     public string Phone { get; set; }
     public string Email { get; set; }
     public string CustomerId { get; set; }
     public string CompanyName { get; set; }
 }
 public class LineItemParam
 {
     public string Sku { get; set; }
     public string Description { get; set; }
     public double UnitPrice { get; set; }
     public int Quantity { get; set; }
 }

Best regards,
Lan Huang

---

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Answer 2

you just use linq:

var parameters = new PayParam();
var IdData = scData.FindData();
var lineItems = new[] {("Test1",12.00m) , ("Test2",13.00m), ("Test3", 18.00m) };
var parameters = new PayParam
      {
	     Phone = IdData.PhoneNumber,
         Email = IdData.Email.ToUpper(),
	     CustomerId = "1234",
		 CompanyName = "TEST NAME",
	  },
	  LineItems = lineItems.Select(d => new LineItemParam
      {
         Sku = GetSKU(),
         Description = d.Item1,
         UnitPrice =  d.Item2, 
         Quantity = 1
      }).ToArray();

if you need to use two arrays its:

      LineItems = desc.Select((d,i) => new LineItemParam
      {
         Sku = GetSKU(),
         Description = d,
         UnitPrice = values[i], 
         Quantity = 1
      }).ToArray();