business-objects

Quick question, is it possible to bind a combobox to a list of objects, but have the selectedvalue property point to the object, not a property of the object. I only ask because we have some Business Objects which have references to other objects - such as a 'Year' object. That year object may need to be switched out for another year object. Only solution I can come up with is to have another class with a single property, in this case pointing to a year object. then bind the combobox to a List of these and set both the display and value members to the single property. But doing that for any

I am in a situation where I have to perform a transaction master detail record ( Drop prev details, insert new details, Update Master status ) Master Business Object has 20 fields Details Business Object has 4 fields only Now I have to update only 1 field in master table and 4 fields in details table for insert. If I initialize a new master object, 19 fields are being wasted for a simple update. What do I do to efficiently handle this situation ? Can I make a new object and inherit only one field from my master business object ? Please give me a little working example if you advise me a DTO or

I populate DataGrid in WPF through MVVM. I have business object with 4 properties to create the Row and Columns in the DataGrid. <DataGrid CanUserAddRows="True" ItemsSource="{Binding Path=PersonsInfo}" AutoGenerateColumns="False" CanUserDeleteRows="True" CanUserReorderColumns="True" CanUserSortColumns="True"> <DataGrid.Columns> <DataGridTextColumn Header="Name" Binding="{Binding Path=Name}"/> <DataGridTextColumn Header="Age" Binding="{Binding Path=Age}"/> <DataGridTextColumn Header="Date Of Birth" Binding="{Binding Path=DateOfBirth}"/> <DataGridTextColumn Header="Address" Binding="{Binding

I am willing to integrate the entity framework as my data layer. I followed articles and generated poco entities using this tutorial: http://blogs.msdn.com/b/adonet/archive/2010/01/25/walkthrough-poco-template-for-the-entity-framework.aspx I have my own business objects. Here is my business object Brach: public class Branch { public long BranchId { get; private set; } public string BranchName { get; set; } public string BranchCode { get; set; } public Branch() { } public void InsertBranch(Guid companyId) { using (var ctx = new Entities.Entities()) { var branch = new T_STF_BRANCH() //This is

I have a WPF dialog with a couple of textboxes on it. Textboxes are bound to my business object and have WPF validation rules attached. The problem is that user can perfectly click 'OK' button and close the dialog, without actually entering the data into textboxes. Validation rules never fire, since user didn't even attempt entering the information into textboxes. Is it possible to force validation checks and determine if some validation rules are broken? I would be able to do it when user tries to close the dialog and prohibit him from doing it if any validation rules are broken. Thank you.

I’ve been reading a few questions and answers regarding exceptions and their use. Seems to be a strong opinion that exceptions should be raised only for exception, unhandled cases. So that lead me to wondering how validation works with business objects. Lets say I have a business object with getters/setters for the properties on the object. Let’s say I need to validate that the value is between 10 and 20. This is a business rule so it belongs in my business object. So that seems to imply to me that the validation code goes in my setter. Now I have my UI databound to the properties of the data