用于 ADO.NET 的库可以将数据从 .csv 文件快速批量插入到数据库中? [英] Libraries for ADO.NET to rapidly bulk insert data into a database from a .csv file?

问题描述

I'd like to know if you can recommend any advanced ADO.NET libraries for working with databases.

I've discovered that LINQ-to-Entities is great for pulling data out of databases, but not at all useful for inserting data into databases. Its missing functionality like fast bulk insert, culling of duplicates, and most of the advanced functionality you can achieve with pure SQL.

So: can you recommend some ADO.NET libraries that offer the sorts of advanced functionality that LINQ-to-Entities is missing?

解决方案

The ADO.net SqlBulkCopy class enables quick, mass upload of records into a table:

    DataTable dt = s_EmptyUploadTable.Copy();
    foreach (var itm in yourList) {
        DataRow row = dt.NewRow();
        row["Field1"] = itm.Field1;
        row["Field2"] = itm.Field2;
        dt.Rows.Add(row);
    }
    using (SqlConnection cn = new SqlConnection(yourConnectionString)) {
        cn.Open();
        using (SqlBulkCopy bulkCopy = new SqlBulkCopy(cn)) {
            bulkCopy.DestinationTableName = "dbo.YourActualSQLServerTableName";
            bulkCopy.WriteToServer(dt);
        }
        cn.Close();
    }

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