Databases
StackOverflow2013
Postsdbo
PO
 

Note that there are some explanatory texts on larger screens.

plurals
  1. PO
    primarykey
    data
    text
    <p>The way I have done this in the past is to use our good friend Lambda. By using Expressions we can pass in the properties themselves to your implementation of OnPropertyChanges, and use the Expression tree to extract the property. This gives you compile time checking of the members you are raising the PropertyChanged event for.</p> <p>Of course use of Expression will depend entirely on what type of performance you need.</p> <p>See code snippet below:</p> <pre><code>using System; using System.Linq; using System.ComponentModel; using System.Linq.Expressions; namespace OnNotifyUsingLambda { public class MainClass : INotifyPropertyChanged { public static void Main (string[] args) { new MainClass().Run();} public void Run() { this.PropertyChanged += (sender, e) =&gt; Console.WriteLine(e.PropertyName); MyProperty = "Hello"; } private string myProperty; public string MyProperty { get { return myProperty; } set { myProperty = value; // call our OnPropertyChanged with our lamba expression, passing ourselves. // voila compile time checking that we haven't messed up! OnPropertyChanged(x =&gt; x.MyProperty); } } /// &lt;summary&gt; /// Fires the PropertyChanged for a property on our class. /// &lt;/summary&gt; /// &lt;param name="property"&gt; /// A &lt;see cref="Expression&lt;Func&lt;MainClass, System.Object&gt;&gt;"/&gt; that contains the /// property we want to raise the event for. /// &lt;/param&gt; private void OnPropertyChanged (Expression&lt;Func&lt;MainClass, object&gt;&gt; property) { // pull out the member expression (ie mainClass.MyProperty) var expr = (MemberExpression)property.Body; if (PropertyChanged != null) { // Extract everything after the period, which is our property name. var propName = expr.ToString ().Split (new[] { '.' })[1]; PropertyChanged (this, new PropertyChangedEventArgs(propName)); } } public event PropertyChangedEventHandler PropertyChanged; } } </code></pre>
    singulars
    1. This table or related slice is empty.
    1. POEnforcing the correct implementation of INotifyPropertyChanged with CodeContracts - "requires unproven"
      singulars
      1. PTQuestion
    1. PTAnswer
    1. USMark Allanson
    1. USMark Allanson
    plurals
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. VO
      singulars
      1. PO
      1. This table or related slice is empty.
      1. VTUpMod
    1. This table or related slice is empty.
 

Querying!

 
Guidance
A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

SQuiL has stopped working due to an internal error.

If you are curious you may find further information in the browser console, which is accessible through the devtools (F12).

Reload