public void InitializeCombo()
{
ddlCostCentre.DataSource = hkManager.GetAllHouseKeeping(3);
ddlCostCentre.DataTextField = "HKName";
ddlCostCentre.DataValueField = "HKID";
ddlCostCentre.DataBind();
ddlCostCentre.Items.Insert(0, new ListItem(String.Empty, String.Empty));
ddlCostCentre.SelectedIndex = 0;
ddlBranchID.DataSource = hkManager.GetAllHouseKeeping(31);
ddlBranchID.DataTextField = "HKName";
ddlBranchID.DataValueField = "HKID";
ddlBranchID.DataBind();
ddlBranchID.Items.Insert(0, new ListItem(String.Empty, String.Empty));
ddlBranchID.SelectedIndex = 0;
ContactInfoManager cIM = new ContactInfoManager();
ddlEmployee.DataSource = cIM.GetAllEmployee();
ddlEmployee.DataTextField = "Name";
ddlEmployee.DataValueField = "ContactID";
ddlEmployee.DataBind();
ddlEmployee.Items.Insert(0, new ListItem(String.Empty, String.Empty));
ddlEmployee.SelectedIndex = 0;
}