文件名称：演示如何使用 SqlBulkCopy 类加载数据
文件大小：5KB
文件格式：RTF
更新时间：2013-12-24 06:29:04
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下面的控制台应用程序演示如何使用 SqlBulkCopy 类加载数据。在此示例中，使用 SqlDataReader 将数据从 SQL Server 2005 AdventureWorks 数据库中的 Production.Product 表复制到同一数据库中的相似表。 重要说明： 在您按照批量复制示例设置 (ADO.NET) 中的描述创建工作表之后，此示例才会运行。提供此代码仅为了演示使用 SqlBulkCopy 的语法。如果源表和目标表都在同一个 SQL Server 实例中，则使用 Transact-SQL INSERT … SELECT 语句复制数据会更方便快捷。 using System.Data.SqlClient; class Program { static void Main() { string connectionString = GetConnectionString(); // Open a sourceConnection to the AdventureWorks database. using (SqlConnection sourceConnection = new SqlConnection(connectionString)) { sourceConnection.Open(); // Perform an initial count on the destination table. SqlCommand commandRowCount = new SqlCommand( "SELECT COUNT(*) FROM " + "dbo.BulkCopyDemoMatchingColumns;", sourceConnection); long countStart = System.Convert.ToInt32( commandRowCount.ExecuteScalar()); Console.WriteLine("Starting row count = {0}", countStart); // Get data from the source table as a SqlDataReader. SqlCommand commandSourceData = new SqlCommand( "SELECT ProductID, Name, " + "ProductNumber " + "FROM Production.Product;", sourceConnection); SqlDataReader reader = commandSourceData.ExecuteReader(); // Open the destination connection. In the real world you would // not use SqlBulkCopy to move data from one table to the other // in the same database. This is for demonstration purposes only. using (SqlConnection destinationConnection = new SqlConnection(connectionString)) { destinationConnection.Open(); // Set up the bulk copy object. // Note that the column positions in the source // data reader match the column positions in // the destination table so there is no need to // map columns. using (SqlBulkCopy bulkCopy = new SqlBulkCopy(destinationConnection)) { bulkCopy.DestinationTableName = "dbo.BulkCopyDemoMatchingColumns"; try { // Write from the source to the destination. bulkCopy.WriteToServer(reader); } catch (Exception ex) { Console.WriteLine(ex.Message); } finally { // Close the SqlDataReader. The SqlBulkCopy // object is automatically closed at the end // of the using block. reader.Close(); } } // Perform a final count on the destination // table to see how many rows were added. long countEnd = System.Convert.ToInt32( commandRowCount.ExecuteScalar()); Console.WriteLine("Ending row count = {0}", countEnd); Console.WriteLine("{0} rows were added.", countEnd - countStart); Console.WriteLine("Press Enter to finish."); Console.ReadLine(); } } } private static string GetConnectionString() // To avoid storing the sourceConnection string in your code, // you can retrieve it from a configuration file. { return "Data Source=(local); " + " Integrated Security=true;" + "Initial Catalog=AdventureWorks;"; } }