Monday, March 22, 2010

Silverlight Dynamically Creating Controls and Attaching Event Handlers

Pro Silverlight 4 in C#Dynamically creating controls in Silverlight is a breeze.
I am using Visual Studio 2010 Release Candidate.
I am starting a Silverlight Application Project.

I am selecting Asp .Net Web Project as new Web Project Typer.

As mentioned in the previous blog VS 2010 comes with excellent tool support for Silverlight.

I am adding a Stack Panel (stp1)to hold the dynamically created controls and a TextBlock to display the message based on the control selected.

Going to the load event of Main Page I am dynamically creating Buttons.

List<string> lstr = new List<string> { "Shalvin", "Praseed Pai" };

private void UserControl_Loaded(object sender, RoutedEventArgs e)
Button btn;
foreach (string str in lstr)
btn = new Button();
btn.Content = str;
btn.Tag = str;
btn.Click += new RoutedEventHandler(btn_Click);

Notice I have only one event Handler for the whole set of controls.
I am going to have different functionlity for different buttons by identifying the tag property of Button.

private void btn_Click(object sender, RoutedEventArgs e)
Button btn = sender as Button;
string txtTag = btn.Tag.ToString();
tblMessage.Text = txtTag;

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