KurtSchroeder.com » Entity Framework

ASP.Net vs PHP/WordPress

Kurt — Thu, 10 Feb 2011 13:46:44 +0000

There are two problems with Dot.Net
1. I love it and i can be a lot of fun coding in.
2. WordPress and php can do just about all of the same thing in about 1/3 the time.

A word on Linq to Entity

Kurt — Fri, 19 Nov 2010 18:51:37 +0000

Entity Framework is great, Linq to EntityFramework totally sucks. When views get complicated, Selects like “Where a.xxx == 5″ turns the related entityes to repeate the first item and not select the real associated item.

Solution? Kill the view, kill the Entity related to the view, recreate the view as simple as possible, do not add navgation if you plan to do multiple selects.

I know some one will know why i’m wrong and someone else will say i’m cryptic. Eather way the damn thing does not work like all the other query languages SQL or other wise.

That means it sucks!! I’m sure forcing the first item to be selected on the following unrelated item is some great feature. Too bad the rest of us weren’t in on the secrete!

KES

For those other Entity Frame work Web types that are stuck doing a Windows Forms App.

Kurt — Sat, 06 Nov 2010 14:46:37 +0000

Using Entity Frame Work for a data layer in a Windows Forms DataGridView. How do you delete?

You need to add an event for KeyDown. Me, being a total web type and mostly MVC these days, I was about to write a handler and event. Well, no need.

private void dgvSubCats_KeyDown(object sender, KeyEventArgs e)

{

if (e.KeyCode == Keys.Delete)

{

for (int i = 0; i < dgvSubCats.SelectedRows.Count; i++) // i ‘m going to add IEnumeriable to DataGridViewRows collection some day.

{

Int32 Id = Int32.Parse(dgvSubCats.SelectedRows[i].Cells["productSubGroupIdDataGridViewTextBoxColumn"].Value.ToString());

var sc = (from m in context.ProductSubGroups where m.ProductSubGroupId== Id select m).FirstOrDefault();

context.ProductSubGroups.DeleteObject(sc);

}

context.SaveChanges();

ReloadSubCatGrid();

}

Because its intuitive and easy, I have a hard time with Windows Forms. It’s way too designer centric for web types.

KES

Code Only Option

Kurt — Tue, 01 Jun 2010 13:59:42 +0000

If you are like me, someone who cannot use somthing unless you understand it, This is for you! I do not understand why this has not been incorporated in to the release. First you will need to download CTP3 Then view the walkthrough. The example is fairly old, but it give the idea.