Binding a Property to an Expression

• When we want to automatically change a value of a "Property" based on an expression we'll use the "BindEvents"
• By using the "BindEvents" we are "Binding" the value of the "Property" to the code that is set in the "Event"
• We'll go to the "Events" tab in the "Properties" window, and select the "BindForeColor" event - to dynamically determine the "ForeColor" of our control
• We can type the name of the method we want, next to the event we wish to bind to

• When we click enter, visual studio creates a method for us in the "Code Behind" of our view, where we can write the rules of that we'll determine the value of the property
• We'll use the Value property of the Event args we get, by writing `e.Value

private void IDontLikeMondays(object sender, ColorBindingEventArgs e)
{
     if (_controller.Orders.OrderDate.DayOfWeek == DayOfWeek.Monday)
         e.Value = Color.Red;
     else
         e.Value = Color.Green;
} 

• We can use the same method for multiple controls, by selecting these controls while holding the ctrl key, and selecting the method we wrote in the "Properties" window

• We can change the way the Active row is displayed on the Grid, by setting it's ActiveRowStyle property:

• Exercise Control Events

---

Help us improve, Edit this page on GitHub
or email us at info@fireflymigration.com