使用MS Jet OLEDB导入.csv的问题

Question

I'm importing a CSV file to SQL for an ASP .NET application. I am able to import the .csv, however one column contains null values if there is anything other than numbers in it.

This row imports fine:

1109,003,IN,0093219095,3/17/2013,3/21/2013,,Sobeys Warehouse,4819.13,61.37,4880.50,RV,1109-003

The fourth column is NULL in SQL:

1109,999,IN,REF 44308/S. DRA,3/18/2013,3/21/2013,,"EC Rebates W/E -02 14, 2013",-200.02,0.00,-200.02,SA,1109-999

All other columns that have text in them import fine, just the fourth one is an issue. I can't figure out what could possibly be different about the affected column over the others. If I replace the text with numbers it imports so its something to do with text data. SQL field is nvarchar(50) so its not a datatype issue.

My connection string ( dir contains the path to the folder):

string connString = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=\"" + dir + "\\\";Extended Properties='text;HDR=Yes;FMT=Delimited(,)';";

Import code:

    public DataTable GetCSV(string path)
    {
        if (!File.Exists(path))
        {
            return null;
        }

        DataTable dt = new DataTable();
        string fullPath = Path.GetFullPath(path);
        string file = Path.GetFileName(fullPath);
        string dir = Path.GetDirectoryName(fullPath);
        string connString = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=\"" + dir + "\\\";Extended Properties='text;HDR=Yes;FMT=Delimited(,)';";
        string query = "SELECT * FROM " + file;
        System.Data.OleDb.OleDbDataAdapter da = new System.Data.OleDb.OleDbDataAdapter(query, connString);

        try
        {
            da.Fill(dt);
        }
        catch (InvalidOperationException)
        {
        }

        da.Dispose();

        return dt;
    }

Answer 1

This solved my issue. Thanks to Pondlife for getting me pointed in the right direction. I figured it had something to do with data types, just not sure where it was getting walloped.

http://msdn.microsoft.com/en-us/library/windows/desktop/ms709353%28v=vs.85%29.aspx