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Type mismatch error inserting rows in DBF File RRS feed

  • Question

  • I'm trying to process some SQLite Databases and insert some data into DBF Files, DBase III (old databases, cannot exchange them for the moment) and I keep getting type mismatch error when trying to insert date values. Date column in DBF file is DATE(8,0)

    I can successfully connect to the DBF using

    OleDbConnection con2 = new OleDbConnection(@"Provider=VFPOLEDB.1;Data Source=C:

    I am creating a list of receipts

    receipt.date = rdr.GetDateTime(1); // ok here

    And here It always crashes

    OleDbCommand cmd2 = new OleDbCommand(query, con2); // used in previous query

    cmd2.CommandType = CommandType.Text; cmd2.CommandText = "INSERT INTO decont (cod, data)" + " VALUES (?, ?)"; cmd2.Parameters.AddWithValue("@cod", Convert.ToInt32(receipts[j].c_id)); cmd2.Parameters.AddWithValue("@data", receipts[j].date); // **

    cmd2.ExecuteNonQuery();


    ** - here I tried lots of Formatting and Parsing, even manual inserting using {date} {^date} in different formats with "-", "/"

    I have little experience, this is just a small project to make things easier in office.

    Any help would be appreciated. Thank you.

    Thursday, July 30, 2020 11:00 PM

All replies

  • Hi Alexandru Bodea,
    First, you need to check whether the data type of the field "date" is date or datetime.
    According to your description, the value of "receipts[j].date" may not be of type date or datetime.
    So you can try to use DateTime.TryParseExact method.

    DateTime dateDate=DateTime.ParseExact(receipts[j].date, "dd'/'MM'/'yyyy", null);

    Best Regards,
    Daniel Zhang


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    Friday, July 31, 2020 7:25 AM