hi,
i am new in programming
i want to fill raddropdownlist manually using entity framework (DataSource,displaymember,valuemember) whats the code for that
also i want to know when i made update using linq how i pass raddropdownlist value member to id table by where id=id whats the code i write i tried search in google but nothing found i need help please
1 Answer, 1 is accepted
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Hi Aly,
You can refer to the following MSDN article providing detailed information about Entity Framework and WinForms: https://docs.microsoft.com/en-us/ef/ef6/fundamentals/databinding/winforms. Assuming that you have already connected to the database you can bind RadDropDownList in a similar way:
We also have a step by step tutorial with RadGridView, so please have a look at it here: https://docs.telerik.com/devtools/winforms/gridview/populating-with-data/binding-to-entityframework-using-database-first-approach. Regarding the update of the entities, it will be necessary to call the SaveChanges method of your context object: https://msdn.microsoft.com/en-us/library/system.data.entity.dbcontext.savechanges(v=vs.113).aspx.
I hope this information is useful.
Regards,
Hristo
Progress Telerik
You can refer to the following MSDN article providing detailed information about Entity Framework and WinForms: https://docs.microsoft.com/en-us/ef/ef6/fundamentals/databinding/winforms. Assuming that you have already connected to the database you can bind RadDropDownList in a similar way:
public partial class RadForm1 : Telerik.WinControls.UI.RadForm{ private NORTHWNDEntities dbContext = new NORTHWNDEntities(); public RadForm1() { InitializeComponent(); this.dbContext.Customers.Load(); this.radDropDownList1.ValueMember = "CustomerID"; this.radDropDownList1.DisplayMember = "ContactName"; this.radDropDownList1.DataSource = this.dbContext.Customers.Local.ToBindingList(); }}We also have a step by step tutorial with RadGridView, so please have a look at it here: https://docs.telerik.com/devtools/winforms/gridview/populating-with-data/binding-to-entityframework-using-database-first-approach. Regarding the update of the entities, it will be necessary to call the SaveChanges method of your context object: https://msdn.microsoft.com/en-us/library/system.data.entity.dbcontext.savechanges(v=vs.113).aspx.
I hope this information is useful.
Regards,
Hristo
Progress Telerik
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