generate a Windows Forms application, in which I upload data from an excel file in csv format and insert them in SQL Server with BulkCopy, the problem arises when I try to copy a file with more than 59000 records, because in register 25119 all it goes well, but from there to the 59000 one of the fields that I define as FK sends it empty, I do not know what it could be, any of you that can help me ... I thank you ...