/// <summary>
/// Called by the ASP.NET page framework to notify server controls that use composition-based implementation to create any child controls they contain in preparation for posting back or rendering.
/// </summary>
protected override void CreateChildControls()
{
base.CreateChildControls();
Controls.Clear();
RockControlHelper.CreateChildControls( this, Controls );
_date = new TextBox();
_date.ID = "tbDate";
_date.AddCssClass( "form-control js-datetime-date" );
Controls.Add( _date );
_time = new TextBox();
_time.ID = "tbTime";
_time.AddCssClass( "form-control js-datetime-time");
Controls.Add( _time );
_cbCurrent = new CheckBox();
_cbCurrent.ID = "cbCurrent";
_cbCurrent.AddCssClass( "js-current-datetime-checkbox" );
_cbCurrent.Text = "Current Time";
this.Controls.Add( _cbCurrent );
_nbTimeOffset = new RockTextBox();
_nbTimeOffset.ID = "nbTimeOffset";
_nbTimeOffset.Help = "Enter the number of minutes after the current time to use as the date. Use a negative number to specify minutes before.";
_nbTimeOffset.AddCssClass( "input-width-md js-current-datetime-offset" );
_nbTimeOffset.Label = "+- Minutes";
this.Controls.Add( _nbTimeOffset );
RequiredFieldValidator.ControlToValidate = _date.ID;
}