跳过SqlBulkCopy的第一行File.ReadAllText

Question

I have been working on this code to create a CSV Import that can be done through a webapp now what I am running into is the first row of the CSV file has headers and when I do the import I was that first line to not be in the SqlBulkCopy. Here is the code.

public partial class CS : System.Web.UI.Page
{
    protected void Upload(object sender, EventArgs e)
    {
        //Upload and save the file
        string csvPath = Server.MapPath("~/Files/") + Path.GetFileName(FileUpload1.PostedFile.FileName);
        FileUpload1.SaveAs(csvPath);

        DataTable dt = new DataTable();
        dt.Columns.AddRange(new DataColumn[15] { new DataColumn("ORGANIZATION_ID", typeof(int)),
            new DataColumn("INVENTORY_ITEM_ID", typeof(int)),
            new DataColumn("ITEM_CODE", typeof(char)),
            new DataColumn("SUBINVENTORY_CODE", typeof(char)),
            new DataColumn("LOCATOR_ID", typeof(int)),
            new DataColumn("LOCATOR_CODE", typeof(char)),
            new DataColumn("QTY", typeof(int)),
            new DataColumn("FLOWRACK", typeof(char)),
            new DataColumn("LOCATOR_POSITION", typeof(char)),
            new DataColumn("LOCATOR_BIN_LEVEL", typeof(char)),
            new DataColumn("PICKING_ORDER", typeof(int)),
            new DataColumn("ITEM_BOX_QUANTITY", typeof(int)),
            new DataColumn("AVAILABLE_BOX_QTY", typeof(int)),
            new DataColumn("AVAILABLE_MOD_QTY", typeof(int)),
            new DataColumn("CreateTime", typeof(DateTime)) });
        string csvData = File.ReadAllText(csvPath);
        foreach (string row in csvData.Split('\n'))
        {
            if (!string.IsNullOrEmpty(row) )
            {
                dt.Rows.Add();
                int i = 0;
                    foreach (string cell in row.Split(','))
                {
                        dt.Rows[dt.Rows.Count - 1][i] = cell;
                        i++;

                }
            }   
        }

        string consString = ConfigurationManager.ConnectionStrings["constr"].ConnectionString;
        using (SqlConnection con = new SqlConnection(consString))
        {
            using (SqlBulkCopy sqlBulkCopy = new SqlBulkCopy(con))
            {
                //Set the database table name
                sqlBulkCopy.DestinationTableName = "dbo.Inventory";
                con.Open();
                sqlBulkCopy.WriteToServer(dt);
                con.Close();
            }
        }
    }
}

Now the error I get is

Exception Details: System.FormatException: Input string was not in a correct format.

Source Error:

Line 46: foreach (string cell in row.Split(',')) Line 47: { Line 48: dt.Rows[dt.Rows.Count - 1][i] = cell; Line 49: i++; Line 50:

I am also using sql server 2008 Can someone help me out?

Answer 1

Use File.ReadAllLines() instead for File.ReadAllText(csvPath) . Which helps you to skip the Split operation as well as the First line; See the code below:

List<string> csvDataList = File.ReadAllLines(csvPath).Skip(1).ToList();

Now the csvDataList is a list of rows except the first row, you can iterate through those rows and do the same functions:

Iteration Example:

 foreach (string Csv in csvDataList)
 {
     DataRow dRow = dt.NewRow();
     int i = 0;
     foreach (string cell in Csv.Split(','))
     {
           if (dRow[i].GetType() == typeof(int))
           {
               int cellValue = 0;
               if (Int32.TryParse(cell, out cellValue))
               {
                  dRow[i++] = cellValue;
               }
            }
            else if (dRow[i].GetType() == typeof(char) && cell.Length == 1)
            {
                dRow[i++] = cell[0];
            }
            else // Which means that the cell is of type int
                dRow[i++] = (int)Char.GetNumericValue(cell[0]);
     }
     dt.Rows.Add(dRow);
 }