protected override void DoProcessControlEvent(object sender, LibControlEventArgs e)
{
    base.DoProcessControlEvent(sender, e);
    if (this.IsEditMode)
    {
        LibEventType eventType = e.EventType;
        switch (eventType)
        {
            case LibEventType.BeforeAddNewRow:
                this.BeforeAddNewRow(e);
                return;
            default:
                return;
        }
    }
}

private void BeforeAddNewRow(LibControlEventArgs e)
{
    DataRow dataRowA = base.Tables[0].Rows[0];
    if (string.IsNullOrEmpty(LibSysUtils.ToString(dataRowA["FIProjectId"])))
    {
        LibExceptionManager.ThrowError(420019, new object[]
        {
            base.DataSource.GetFieldDisplayName(0, "FIProjectId")
        });
    }
    if (StringUtils.SafeCompareStrings(LibSysUtils.ToString(dataRowA["FIYear"]), "0", true) )
    {
        LibExceptionManager.ThrowError(420019, new object[]
        {
            base.DataSource.GetFieldDisplayName(0, "FIYear")
        });
    }
}