private void LoadGridLookupValues()
{
GuestType guestType = new GuestType();
guestType.CompanyId = SessionHandler.CurrentCompanyId;
List<GuestType> guestTypes = new GuestType() { CompanyId = Master.CurrentCompany.CompanyId }.SelectAllList();
((GridViewDataComboBoxColumn)gvGroupMembers.Columns["GuestTypeId"]).PropertiesComboBox.DataSource = guestTypes;
((GridViewDataComboBoxColumn)gvGroupMembers.Columns["GuestTypeId"]).PropertiesComboBox.TextField = "GuestTypeName";
((GridViewDataComboBoxColumn)gvGroupMembers.Columns["GuestTypeId"]).PropertiesComboBox.ValueField = "GuestTypeId";
}