/// <summary>
/// Overrides <see cref="WebControl.AddAttributesToRender"/>
/// </summary>
protected override void AddAttributesToRender(HtmlTextWriter writer)
{
writer.AddAttribute(HtmlTextWriterAttribute.Type, "button");
writer.AddAttribute("value", this.Text);
writer.AddAttribute("language", "javascript");
String myOnclick = " return false; ";
// prepend the dialog open script to the onclick script
if (System.Web.HttpContext.Current != null && this.Page != null && this.Enabled && this.DialogToOpen != null && this.DialogToOpen.Length != 0)
{
DialogWindowBase dialog = this.NamingContainer.FindControl(this.DialogToOpen) as DialogWindowBase;
if (dialog == null)
{
dialog = this.Page.FindControl(this.DialogToOpen) as DialogWindowBase;
}
if (dialog == null)
{
throw new InvalidOperationException("Cannot find a DialogWindow with the name '" + this.DialogToOpen + "'");
}
myOnclick = dialog.GetDialogOpenScript() + "; " + myOnclick;
}
// prepend the user's onclick script to mine
if (this.Attributes["onclick"] != null)
{
myOnclick = this.Attributes["onclick"] + myOnclick;
this.Attributes.Remove("onclick");
}
// write the final onclick
writer.AddAttribute("onclick", myOnclick);
base.AddAttributesToRender(writer);
}