DropDown List Custom Control

[Steven]

This one should be a fairly simple one for you guys. I want to create a
small dropDown list (custom control) and when the user selects anyone of the
value, the control should pass back the Selected Value. This is what I did
till now and I do not know how to pass back the selected value .. Please
help

public class DDControl : System.Web.UI.WebControls.WebControl,
IPostBackEventHandler
{
protected override void Render(HtmlTextWriter output)
{
string s1 = "<SELECT NAME=\"pizzasize\">" ;
string s2 = "<OPTION VALUE=\"s\">" ;
string s3 = "small";
string s4 = "<OPTION VALUE=\"m\">" ;
string s5 = " medium" ;
string s6 = "<OPTION VALUE=\"l\">" ;
string s7 = "large" ;
string s8 = "</SELECT>" ;
output.Write(s1+s2+s3+s4+s5+s6+s7+s8) ;
}
public event EventHandler DropDownChange;

public void RaisePostBackEvent(string eventArgument)
{
OnDropDownChange(EventArgs.Empty);
}

protected virtual void OnDropDownChange(EventArgs e)
{
if (DropDownChange != null)
{
DropDownChange(this, e);
}
}

}

Thanks
Steven

 

[Karl Seguin]

There's a much better way to do this...you are reinventing too much on the
plumbing...

why not just create a control which inherits from DropDownList and add the 3
list items?

public class DDControl : DropDownList{
protected override void CreateChildControls(){
Items.Add(new ListItem("small", "s"));
Items.Add(new ListItem("medium", "m"));
Items.Add(new ListItem("large", "m"));
base.CreateChildControls ();
}
}

Karl

 

[Steven]

Hello Karl,

Thanks for your reply!

The control I'm creating will contain many child controls like textboxes,
buttons and dropdownlists. I just split my code into small module, where I
just want to create Dropdownlist and raise the postback event. Could you
please explain me on how to do that?

Thanks
Steven