How can I setup the Calendar.DateTimeFormat.CalendarWeekRule property from a TreeListDateTimeColumnEditor

[Ivan]

I want to setup  the Calendar.DateTimeFormat.CalendarWeekRule property in the Edit Format for my Tree List control

[Andrey]

Hi Ivan,

You could hook up the ItemDataBound event and in it you should check whether the item is TreeListEditFormItem. After that cast the e.Item as TreeListEditFormItem. Next use the FindControl method to find the desired control. After that you receive all the functionality of the Calendar.

protected void RadTreeList1_ItemDataBound(object sender, TreeListItemDataBoundEventArgs e)
            {
                if (e.Item is TreeListEditFormItem)
                {
                    TreeListEditFormItem editedItem = e.Item as TreeListEditFormItem;
                    RadCalendar rCalendar = (RadCalendar)editedItem.FindControl("RadCalendar1");
                    rCalendar.DateTimeFormat.CalendarWeekRule = System.Globalization.CalendarWeekRule.FirstFourDayWeek;
                }
            }

The illustrated approach, could be used to find any controls within TreeListEditFormItem.

Regards,
Andrey
the Telerik team

[Ivan]

I found this way but I have a read only exception please can you help me

if (e.Column.DataField == "StartDate")
{
    e.CustomEditorInitializer = new TreeListCreateCustomEditorDelegate(delegate
    {
        TreeListDateTimeColumnEditor stDate = new TreeListDateTimeColumnEditor(e.Column);
        stDate.DatePickerControl.Culture.DateTimeFormat.CalendarWeekRule = System.Globalization.CalendarWeekRule.FirstFourDayWeek;

        return stDate;
    });
}

[Andrey]

Hello Ivan,

Thank you for getting back to us.

Please check the following code and see whether it is suitable for your scenario.

protected void RadTreeList1_ItemDataBound(object sender, TreeListItemDataBoundEventArgs e)
        {
            if (e.Item is TreeListEditFormItem)
            {
                TreeListEditFormItem editedItem = e.Item as TreeListEditFormItem;
                RadDatePicker radDatePicker = (RadDatePicker)editedItem.FindControl("RadDatePicker1");
                var calendar = radDatePicker.Calendar;
                System.Globalization.CultureInfo c = new System.Globalization.CultureInfo(calendar.CultureInfo.ToString());
                c.DateTimeFormat.CalendarWeekRule = System.Globalization.CalendarWeekRule.FirstFullWeek;
                calendar.CultureInfo = c;
            }
        }

Although if you prefer the other approach, then you could use the following code:

if (e.Column.DataField == "StartDate")

            {

                e.CustomEditorInitializer = new TreeListCreateCustomEditorDelegate(delegate

                {

                    TreeListDateTimeColumnEditor stDate = new TreeListDateTimeColumnEditor(e.Column);

                    var calendar = stDate.DatePickerControl.Calendar;

                    System.Globalization.CultureInfo c = new System.Globalization.CultureInfo(calendar.CultureInfo.ToString());

                    c.DateTimeFormat.CalendarWeekRule = System.Globalization.CalendarWeekRule.FirstFullWeek;

                    calendar.CultureInfo = c;

                    return stDate;

                });

            }

Do not hesitate to contact us again, if you have more questions.

Greetings,
Andrey
the Telerik team

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