[英]Bulk copy to multiple tables
我的應用程序當前正在將csv文件中的數據讀取到GUI中,然后顯示,此時代碼如下所示:
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();
正確地將所有數據扔到清單的數據網格中。 但是,我想確保在將數據放入庫存表時,名稱和基金將其不同的名稱傳遞給各自的表...有什么想法嗎?
對於起跑線表示歉意,由於某些原因不斷被淘汰
var names = dt.AsEnumerable().Select(o=>o.Field<string>("Name").Distinct());
var funds = dt.AsEnumerable().Select(o=>o.Field<string>("Fund").Distinct());
一旦擁有了這兩個集合,就可以將它們轉換為合適的數據表(有關該站點的許多建議),然后使用更多的SqlBulkCopy來處理它們
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