More on Objectdatasource

First I needed to refresh. First hit got me here, with the answer. A simple call to GridView1.DataBind(); will cause the grid to refresh.

Then I need to handle exceptions. This is done by setting e.ExceptionHandled=true in a OnUpdated, OnDeleted etc func with the signature:
protected void OnUpdated(object sender, ObjectDataSourceStatusEventArgs e).

Then I needed to set whats the key to be passed into the DeleteMethod. This is done by setting the DataKeyNames on the grid

Using a ObjectDataSource that takes constructors

is simply done by creating the object in the OnObjectCreating event, thanks to this link.

 <asp:ObjectDataSource ID='ObjectDataSource1' runat='server' 

          SelectMethod='GetData' 

          TypeName='BLL' OnObjectCreating='ObjectDataSource1_ObjectCreating'>

</asp:ObjectDataSource>

protected void ObjectDataSource1_ObjectCreating(object sender, ObjectDataSourceEventArgs e)
{
BLL bll = new BLL("arg1",100);
e.ObjectInstance = bll;
}

Getting a property value from reflection

Needed to get a value of a property I don't know runtime. This is what I ended up with:

// get the property via reflection

var v = person.GetType().GetProperty("NameOfProperty");

v.GetValue(person, null).ToString();

Merge xml files with XDocument

Quick answer to this link at stackoverflow:
var MyDoc = XDocument.Load("File1.xml");
MyDoc.Root.Add(XDocument.Load("File2.xml").Root.Elements());

RegEx - I don't need to learn it!

Thanks to this tool I can skip learning the regex syntax again. :-)

Object Copy Function

Well, I guess I knew, but still made a search on how I got the shallow copy when I needed a deep copy. I found this post explaining my options.

Binding ComboBox to enum

Wow.. That did take me a lot of googling to figure out! I finally I ended up with the sln from this post. Key findings is that you can't use the enum as an ItemsSource (not a IEnumerable), so we need to wrap it in a collection class. The link shows a nice generic EnumCollection.

PagedCollectionView's filter does not refilter on modified Items

So the PagedCollectionView can't be used out of the box for live filtering. At least this is what I know now. Maybe an answer shows up here

Syntax of custom comparer in OrderBy

Ok, so the Parameter Info says: Func

And I should write:

var comparer = new MyComparer();

Users.OrderBy(x => x.Name, comparer).ToList();

public class MyComparer : IComparer<Object>

Setting binding from code

Forgot this one again:

var b = new Binding("Data"); // Property on datacontext

TheGrid.SetBinding(DataGrid.ItemsSourceProperty, b);

Lambda syntax for eventhandlers

I needed to look up this again. Hopfully it's the last time...

var button = new Button();

button.Click += (s, e) =>

    {

        button.Content = "I'm Clicked";

    };

Thanks to this link

Convert a List to an ObservableCollection

I could do this by using a foreach loop, but I learned some shorter syntax:

var list = new List<User> {new User {Name = "Name"}};

var oc = new ObservableCollection<User>();

list.ForEach(oc.Add); // list.ForEach(x => oc.Add(x)); 

Thanks to this thread

Quit googleing, start using your brain!

I find myself googling for the same thing over and over. So instead of learn and remember, I do copy paste. To help me remember, I'll write everything a learn (or relearn) in this blog. Hopfully it should be something every day!

Results to be entered!