Just need to add the namespace `using System.Linq;`

and use the method `ToList()` in the ObservableCollection object

Depending on the type of object in the `ObservableCollection`... I&#39;ll assume it&#39;s an `int` for this example:

    IEnumerable&lt;int&gt; obsCollection = (IEnumerable&lt;int&gt;)GetCollection();
    var list = new List&lt;int&gt;(obsCollection);

Given that `ObservableCollection&lt;T&gt;` implements `IEnumerable&lt;T&gt;` you can give it to the constructor of `List&lt;T&gt;`:

    List&lt;T&gt; myList = new List&lt;T&gt;(myObservableCollection);

Where `T` is the type of the items in the collection.

`ObservableCollection` implements `IList&lt;T&gt;`, so you should be able to use `ToList()` on it.

[http://msdn.microsoft.com/en-us/library/bb342261.aspx][1]




  [1]: http://msdn.microsoft.com/en-us/library/bb342261.aspx

The Items property returns an IList.  [See http://msdn.microsoft.com/en-us/library/ms132435.aspx][1]


  [1]: http://msdn.microsoft.com/en-us/library/ms132435.aspx

I think the issue here is that ObservableCollection might be modified on the fly when you try to convert it to a List or use as such, so you might need to use a watchdog timer of sorts until ObservableCollection finishes

How do you change the string on the alert saying:

&gt; (Appname/whatever it is) would like to use your current location

Of course, I only want to change the appname part. Because when you use the PhoneGap framework, the string is *very* ugly, something like this:

&gt; /var/mobile/Applications/157EB70D-4AA7-826E-690F0CBE0F/appname.app/www/index.html

Someone having an idea?

Location permission alert on iPhone with PhoneGap

Can I move the instruction pointer **directly** to a line of my choice (within the current method) while debugging a Java program in Eclipse (Galileo)?

It&#39;s straightforward to drag the instruction pointer to the desired line within a method in Visual Studio, but I don&#39;t see a way to do that in Eclipse (and don&#39;t find anything about it in the docs or on google).

Moving the instruction pointer while debugging Java in Eclipse

How does one convert an `ObservableCollection` to a `List` of the held objects?

Converting ObservableCollection to List?

<p>How does one convert an <code>ObservableCollection</code> to a <code>List</code> of the held objects?</p>


I recently was introduced to a large codebase and noticed all string comparisons are done using `String.Equals()` instead of `==` 

What&#39;s the reason for this, do you think?

Why would you use String.Equals over ==?

I have a GridView on my screen and need it to allow paging.

Markup:

    &lt;asp:GridView ID=&quot;GridView1&quot; runat=&quot;server&quot; AllowPaging=&quot;True&quot; 
      AutoGenerateColumns=&quot;False&quot; DataSourceID=&quot;ObjectDataSource1&quot;&gt;
      &lt;Columns&gt;
        &lt;asp:BoundField DataField=&quot;appID&quot; HeaderText=&quot;appID&quot; SortExpression=&quot;appID&quot; /&gt;
      &lt;/Columns&gt;
    &lt;/asp:GridView&gt;

    &lt;asp:ObjectDataSource ID=&quot;ObjectDataSource1&quot; runat=&quot;server&quot; 
      SelectMethod=&quot;GetBookingId&quot; 
      TypeName=&quot;AppointmentRepository&quot;&gt;
      &lt;SelectParameters&gt;
        &lt;asp:Parameter Name=&quot;maximumRows&quot; Type=&quot;Int32&quot; /&gt;
        &lt;asp:Parameter Name=&quot;startRowIndex&quot; Type=&quot;Int32&quot; /&gt;
      &lt;/SelectParameters&gt;
    &lt;/asp:ObjectDataSource&gt;

Code-behind:

    ObjectDataSource1.SelectParameters[&quot;maximumRows&quot;].DefaultValue = &quot;10&quot;;
    ObjectDataSource1.SelectParameters[&quot;startRowIndex&quot;].DefaultValue = &quot;0&quot;;


LINQ query:

    public IQueryable&lt;tblAppointment&gt; GetBookingId(int maximumRows, int startRowIndex)
    {
        var result = (FROM a IN dc.tblAppointments
                      SELECT a).Skip(startRowIndex).Take(maximumRows);
    }

However I receive this error:
&gt;The data source does not support server-side data paging. 

What am I doing wrong?

The data source does not support server-side data paging

Is it possible to specify that members of a nested class can be accessed by the enclosing class, but not other classes ?

Here&#39;s an illustration of the problem (of course my actual code is a bit more complex...) :

    public class Journal
    {
        public class JournalEntry
        {
            public JournalEntry(object value)
            {
                this.Timestamp = DateTime.Now;
                this.Value = value;
            }
    
            public DateTime Timestamp { get; private set; }
            public object Value { get; private set; }
        }
    
        // ...
    }

I would like to prevent client code from creating instances of `JournalEntry`, but `Journal` must be able to create them. If I make the constructor public, anyone can create instances... but if I make it private, `Journal` won&#39;t be able to !

Note that the `JournalEntry` class must be public, because I want to be able to expose existing entries to client code.

Any suggestion would be appreciated !

---

UPDATE: Thanks everyone for your input, I eventually went for the public `IJournalEntry` interface, implemented by a private `JournalEntry` class (despite the last requirement in my question...)

How to restrict access to nested class member to enclosing class?

I was wondering if you guys know how to get the date of currents week&#39;s monday based on todays date? 

i.e 2009-11-03 passed in and 2009-11-02 gets returned back

/M

Get date of first Monday of the week?

Silly question, I want to format an integer so that it appears with the 1000&#39;s separator (,), but also without decimal places and without a leading 0.

My attempts so far have been:

    String.Format(&quot;{0} {1}&quot;, 5, 5000);            // 5 5000
    String.Format(&quot;{0:n} {1:n}&quot;, 5, 5000);        // 5.00 5,000.00
    String.Format(&quot;{0:0,0} {1:0,0}&quot;, 5, 5000);    // 05 5,000

The output I&#39;m after is:

    5 5,000

Is there something obvious that I&#39;m missing?

String.Format an integer to use a thousands separator without decimal places or leading 0 for small integers

 I have a following class :

    [DataContract]
    public class Pair&lt;TKey, TValue&gt; : INotifyPropertyChanged, IDisposable
    {
        public Pair(TKey key, TValue value)
        {
            Key = key;
            Value = value;
        }

        #region Properties
        [DataMember]
        public TKey Key
        {
            get
            { return m_key; }
            set
            {
                m_key = value;
                OnPropertyChanged(&quot;Key&quot;);
            }
        }
        [DataMember]
        public TValue Value
        {
            get { return m_value; }
            set
            {
                m_value = value;
                OnPropertyChanged(&quot;Value&quot;);
            }
        }
        #endregion

        #region Fields
        private TKey m_key;
        private TValue m_value;
        #endregion

        #region INotifyPropertyChanged Members

        public event PropertyChangedEventHandler PropertyChanged;

        protected void OnPropertyChanged(string name)
        {
            PropertyChangedEventHandler handler = PropertyChanged;
            if (handler != null)
            {
                handler(this, new PropertyChangedEventArgs(name));
            }
        }

        #endregion

        #region IDisposable Members

        public void Dispose()
        { }

        #endregion
    }

Which I&#39;ve put in an ObservableCollection :

    ObservableCollection&lt;Pair&lt;ushort, string&gt;&gt; my_collection = 
        new ObservableCollection&lt;Pair&lt;ushort, string&gt;&gt;();

    my_collection.Add(new Pair(7, &quot;aaa&quot;));
    my_collection.Add(new Pair(3, &quot;xey&quot;));
    my_collection.Add(new Pair(6, &quot;fty&quot;));

Q : How do I sort it by key ?

How do I sort an observable collection?

I&#39;ve got an `ObservableCollection&lt;A&gt; a_collection;` The collection contains &#39;n&#39; items. Each item A looks like this:

    public class A : INotifyPropertyChanged
    {
 
        public ObservableCollection&lt;B&gt; b_subcollection;
        Thread m_worker;
    }

Basically, it&#39;s all wired up to a WPF listview + a details view control which shows the `b_subcollection` of the selected item in a separate listview (2-way bindings, updates on propertychanged etc.). 

The problem showed up for me when I started to implement threading. The entire idea was to have the whole `a_collection` use it&#39;s worker thread to &quot;do work&quot; and then update their respective `b_subcollections` and have the gui show the results in real time.

When I tried it , I got an exception saying that only the Dispatcher thread can modify an ObservableCollection, and work came to a halt.

Can anyone explain the problem, and how to get around it?


How do I update an ObservableCollection via a worker thread?

What is the use of ObservableCollection  in .net?

What is the use of ObservableCollection in .net?

I want to know the difference between `ObservableCollection` and `BindingList` because I&#39;ve used both to notify for any add/delete change in Source, but I actually do not know when to prefer one over the other.

Why would I choose one of the following over the other?

    ObservableCollection&lt;Employee&gt; lstEmp = new ObservableCollection&lt;Employee&gt;();

or 

    BindingList&lt;Employee&gt; lstEmp = new BindingList&lt;Employee&gt;();

Difference between ObservableCollection and BindingList

I am looking for Linq way (like RemoveAll method for List&lt;T&gt;) which can remove selected items from my ObservableCollection.

I am too new to create an extension method for myself. Is there any way I remove items from ObservableCollection passing a Lambda expression?

Content Type	Original Author	Original Content on Stackoverflow
Question	Shawn Mclean	View Question on Stackoverflow
Solution 1 - C#	Jaider	View Answer on Stackoverflow
Solution 2 - C#	Matthew Scharley	View Answer on Stackoverflow
Solution 3 - C#	GraemeF	View Answer on Stackoverflow
Solution 4 - C#	Robert Harvey	View Answer on Stackoverflow
Solution 5 - C#	LJM	View Answer on Stackoverflow
Solution 6 - C#	user90843	View Answer on Stackoverflow

Converting ObservableCollection to List?

C# Problem Overview

C# Solutions

Solution 1 - C#

Solution 2 - C#

Solution 3 - C#

Solution 4 - C#

Solution 5 - C#

Solution 6 - C#

Moving the instruction pointer while debugging Java in Eclipse

Location permission alert on iPhone with PhoneGap

Attributions