Question

我的应用程序当前正在将csv文件中的数据读入我的GUI，然后显示，此时代码如下所示：

try
        {
            //Browse for file
            OpenFileDialog ofd = new OpenFileDialog();
            //Only show .csv files
            ofd.Filter = "Microsoft Office Excel Comma Separated Values File|*.csv";
            DialogResult result = ofd.ShowDialog();

            if (result == DialogResult.OK)
            {
                SqlConnection con = new SqlConnection(@"Data Source=(local);Initial Catalog=ionCalc;Integrated Security=True");
                string filepath = ofd.FileName;
                StreamReader sr = new StreamReader(filepath);
                string line = sr.ReadLine();
                string[] value = line.Split(',');
                DataTable dt = new DataTable();
                DataRow row;

                foreach (string dc in value)
                {
                    dt.Columns.Add(new DataColumn(dc));
                }

                while (!sr.EndOfStream)
                {
                    value = sr.ReadLine().Split(',');
                    if (value.Length == dt.Columns.Count)
                    {
                        row = dt.NewRow();
                        row.ItemArray = value;
                        dt.Rows.Add(row);
                    }
                }
                SqlBulkCopy bc = new SqlBulkCopy(con.ConnectionString, SqlBulkCopyOptions.TableLock);
                bc.DestinationTableName = "Inventory";
                bc.BatchSize = dt.Rows.Count;
                bc.ColumnMappings.Add("Name", "Name");
                bc.ColumnMappings.Add("IN", "IN");
                bc.ColumnMappings.Add("Fund", "Fund");
                bc.ColumnMappings.Add("Status", "Status");
                bc.ColumnMappings.Add("ShareCurrency", "ShareCurrency");
                bc.ColumnMappings.Add("PriceFrequency", "PriceFrequency");
                bc.ColumnMappings.Add("ClassCode", "ClassCode");
                bc.ColumnMappings.Add("Simulation", "Simulation");
                bc.ColumnMappings.Add("Hedged", "Hedged");
                bc.ColumnMappings.Add("FundCurrency", "FundCurrency");
                bc.ColumnMappings.Add("Type", "Type");
                con.Open();
                bc.WriteToServer(dt);
                bc.Close();
                connection.Close();

将所有数据正确地抛出到库存的数据网格中。但是，我想确保在数据被放入库存表时，名称和基金的名称和基金的名称已经传递到各自的表格......任何想法？

为起跑线道歉，出于某种原因不断被删除

Answer 1

var names = dt.AsEnumerable().Select(o=>o.Field<string>("Name").Distinct());
var funds = dt.AsEnumerable().Select(o=>o.Field<string>("Fund").Distinct());

一旦你拥有了这两个集合，就可以根据需要将它们转换为数据表（有关该网站的大量建议），然后使用更多的SqlBulkCopy来处理它们

批量复制到多个表

1 个答案: