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POXtraGrid binding over complex and nested objects model
 

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    <p>I'm wondering how to solve/simplify a task that sometimes pop-ups during developement with DevExpress XtraGrid suite. Sometimes i fall into this case: Given these 2 classes that represents the model classes that comes from the Business Logic layer:</p> <pre><code> public class Customer { public Int32 CustomerId { get; set; } public String Name { get; set; } public String Address { get; set; } public List&lt;Order&gt; Orders { get; set; } } public class Order { public Int32 OrderId { get; set; } public String ItemCode { get; set; } public Int32 Quantity { get; set; } public Decimal Price { get; set; } public DateTime Date { get; set; } } </code></pre> <p>I'd like to create a simple window that shows an XtraGrid that allows edit/add/remove a list of customers and its nested orders. In order to do that, i've created a simple form with a GridControl and a GridView controls with the AllowAddRow and AllowDeleteRow properties == true. Then, in Form1 class i've done the following:</p> <pre><code>//List of my customers private List&lt;Customer&gt; _customers; public Form1() { //Initialize UI components InitializeComponent(); //Call the provider in order to get customers CustomerProvider cp = new CustomerProvider(); _customers = cp.GetCustomers(); //Initialize bindingSource BindingSource bs = new BindingSource(); bs.DataSource = _customers; //Set GridControl's dataSource gridControl1.DataSource = bs; } </code></pre> <p>Now i've got beautiful GridControl that shows the content of my List.</p> <p><img src="https://i.stack.imgur.com/YAnCX.png" alt="enter image description here"></p> <p>But now here's the problem...how can i add or delete row? Infact:</p> <ul> <li><p>If i set the focus on a row and i press "Delete" key, it doesn't work.</p></li> <li><p>If i try to add a new row, when it looses focus, it suddently disappears.</p></li> </ul> <p>Obviously i'm missing something. Unfortunately i found the DevExpress documentation a quite confusional (in my opinion) about this kind of argument and the best practises, so i can't reach my goal. </p> <p>Someone can help me?</p> <p>PS. <a href="https://dl.dropboxusercontent.com/u/60231308/SimpleBindingTest.rar" rel="nofollow noreferrer">This</a> is the hyperlink for the .csproj of my sample. </p>
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