List item in database

Question

I have a list

List<SalesDetail> SalesList = new List<SalesDetail>(); SalesDetail detail = new SalesDetail(); 

where "SalesDetail" is the class. I have a (add) button, and my code when I click the add button is SalesList.Add (details); where details is an object of the SalesDetail class that contains public variables with {set; and get;}

but when I try to get every item in the list, I get only the last item. my code extracting every element

 foreach(SalesDetail sd in SalesList) { messageBox.show(SalesList); } 

in my SalesDetail class I have the following code

 Public string Brand{get; set;} Public string Product{get; set;} 

I want to get each item from a list and store it in a database. I would like to know where I made a mistake when retrieving data. please help Regards bunzitop

Answer 1

You need to use an sd object that references the current item in SalesList

Try:

 foreach(SalesDetail sd in SalesList) { messageBox.show(sd.Brand); messageBox.show(sd.Product); } 

From chat:

 List<SalesDetail> SalesList = new List<SalesDetail>(); public void button1_click() { SalesDetail detail = new SalesDetail(); detail.Brand = textBox1.Text detail.Product= textBox2.Text` SalesList.Add(detail); } 

Answer 2

SalesList - type. You should use sd (which is a variable value) in your loop.

Answer 3

First, the definition of your class is incorrect, because you omit the types of your Brand and Product properties, and the public visibility public must be lowercase.

To use ToString() , you need to override the method in your class:

 public class SalesDetail { public string Brand {get; set;} public string Product {get; set;} public override string ToString() { return string.Format("Brand: {0}, Product {1}", Brand, Product); } } 

Then you can use Linq to list the Aggregate and display its contents.

 var items = SalesList.Select(s => s.ToString()).Aggregate((s, s1) => s + Environment.NewLine + s1); MessageBox.Show(items);