Composite Control design time behavior

[J.Marsch]

I have created a composite control that combines a Label and a Textbox,
where the label appears immediately above the textbox. This seems to work
fine at runtime, but at design time, when you drop the control onto a web
form, the control appears as a tiny, empty box on the webform. I would like
for it to render as it will look at run time (or at least close). How would
I do that?

Here's the code ( am using AddChildControls, not Render)

public class EditBoxLabelControl : System.Web.UI.WebControls.WebControl,
System.Web.UI.INamingContainer
{
protected System.Web.UI.WebControls.TextBox EditBox;
protected System.Web.UI.WebControls.Label FieldLabel;

protected override void CreateChildControls()
{
this.FieldLabel = new System.Web.UI.WebControls.Label();
this.FieldLabel.Text = "Label";
this.Controls.Add(this.FieldLabel);

System.Web.UI.WebControls.Literal literal = new
System.Web.UI.WebControls.Literal();
literal.Text = "<br>";
this.Controls.Add(literal);

this.EditBox = new System.Web.UI.WebControls.TextBox();
this.EditBox.Text = "test";
this.Controls.Add(this.EditBox);
}

}

 

[Andy Smith]

add this override to your control:
protected override void Render(HtmlTextWriter writer) {
this.EnsureChildControls();
base.Render(writer();
}

This makes sure that CreateChildControls has been called
before the control is rendered, which is good to do for
composite controls, regardless of designer support.

__
Andy Smith
Chief Code Monkey

 

[J.Marsch]

Thank you, Andy. I had just hit that myself!

-----Original Message-----
add this override to your control:
protected override void Render(HtmlTextWriter writer) {
this.EnsureChildControls();
base.Render(writer();
}

This makes sure that CreateChildControls has been called
before the control is rendered, which is good to do for
composite controls, regardless of designer support.

__
Andy Smith
Chief Code Monkey

Label
and a Textbox, least
close). How would
.