DateTimeControl Custom OnDateChange event not firing in SharePoint - asp.net

Question

The custom event for a DateTimeControl is not firing. Instead the CreateChildControls() is firing, every-time I change the date on Calendar.
namespace myn
{
class StopTimeFieldControl : BaseFieldControl
{
protected DateTimeControl dateTime;
public override object Value
{
get
{
EnsureChildControls();
if (dateTime == null)
{
return string.Empty;
}
return dateTime.SelectedDate;
}
set
{
EnsureChildControls();
dateTime.SelectedDate = Convert.ToDateTime(this.ItemFieldValue);
}
}
protected override string DefaultTemplateName
{
get
{
return "StopTimeFieldControl";
}
}
public override void Validate()
{
if (ControlMode == SPControlMode.Display || !IsValid)
{
//this.ViewState["StopTimeFieldControl"] = Value.ToString();
return;
}
base.Validate();
if (dateTime.IsDateEmpty)
{
this.ErrorMessage = " Du måste ange ett värde för det här obligatoriska fältet.";
IsValid = false;
return;
}
try
{
StartTimeFieldControl child = (StartTimeFieldControl)FindControlRecursive(this.Page, "startDateTime").Parent;
if (dateTime.SelectedDate < Convert.ToDateTime(child.Value))
{
this.ErrorMessage = " Du måste ange ett värde som är senare än startdatum.";
IsValid = false;
return;
}
}
catch (Exception e)
{
PortalLog.LogString("## Exception Occurred: Fail when trying to catch startDateTime ** {0} || {1}", e.Message, e.StackTrace);
}
this.Page.Session["startDateTime"] = Value;
}
protected override void CreateChildControls()
{
if (Field == null) return;
base.CreateChildControls();
if (ControlMode == Microsoft.SharePoint.WebControls.SPControlMode.Display)
return;
if (ControlMode == SPControlMode.New || ControlMode == SPControlMode.Edit)
{
dateTime = new DateTimeControl();
dateTime.CssClassTextBox = "ms-long";
dateTime.TimeZoneID = 1053;
dateTime.LocaleId = 1053;
dateTime.ID = "stopDateTime";
dateTime.AutoPostBack = true;
this.dateTime.DateChanged += new EventHandler(dateTime_DateChanged);
Controls.Add(dateTime);
}
//ChildControlsCreated = true;
}
void dateTime_DateChanged(object sender, EventArgs e)
{
string hi = "hej";
}
public static Control FindControlRecursive(Control Root, string Id)
{
if (Root.ID == Id)
return Root;
foreach (Control Ctl in Root.Controls)
{
Control FoundCtl = FindControlRecursive(Ctl, Id);
if (FoundCtl != null)
return FoundCtl;
}
return null;
}
}
}

Answer 1

Try to create your DateTimeControl control in PreInit or Init phase and not in CreateChildControls. Possible reason of such behaviour - your control is created too late, when page life cycle passed through postback event handling.

Answer 2

CreateChildControls() is firing,
every-time I change the date on
Calendar
But is the event handler being bound every time?
In most cases i dont create controls in if statements, things tend to not get wired up correctly.
Try just making the control invisible instead.
dateTime = new DateTimeControl();
if (ControlMode == SPControlMode.New || ControlMode == SPControlMode.Edit)
{
datetime.Visible = false;