C#批量更新数据表

ADO.Net2.0中提供了SqlBulkCopy类
SqlBulkCopy 类
• DestinationTableName:目标数据库的表名
• BulkCopyTimeout:指定操作完成的Timeout时间
• NotifyAfter:指定通知通知事件前处理的数据行数
• WriteToServer方法:将数据源拷备到目标数据库
• SqlBulkCopy DesBulkOp = new
SqlBulkCopy(DesConString,
SqlBulkCopyOptions.UseInternalTransaction);
– 指定了目标数据库，使用
SqlBulkCopyOptions.UseInternalTransaction是指迁移动作指定
在一个Transaction当中，如果数据迁移中产生错误或异常将发生
回滚。
• 使用SqlBulkCopy 类只能向SQL Server 表写入数据。但
是，数据源不限于SQL Server；可以使用任何数据源，
只要数据可加载到DataTable 实例或可使用IDataReader
实例读取数据。

 

C# code

   
   
   
   

    
    
    
    
     
    
    
    
    using
    
    
    
     System; 
    
    
    
    using
    
    
    
     System.Collections.Generic; 
    
    
    
    using
    
    
    
     System.ComponentModel; 
    
    
    
    using
    
    
    
     System.Data; 
    
    
    
    using
    
    
    
     System.Drawing; 
    
    
    
    using
    
    
    
     System.Text; 
    
    
    
    using
    
    
    
     System.Windows.Forms; 
    
    
    
    using
    
    
    
     System.Data.SqlClient; 
    
    
    
    using
    
    
    
     System.Configuration; 
    
    
    
    namespace
    
    
    
     Demo17 { 
    
    
    
    public
    
    
    
     
    
    
    
    partial
    
    
    
     
    
    
    
    class
    
    
    
     Form1 : Form { DateTime startTime; 
    
    
    
    public
    
    
    
     Form1() { InitializeComponent(); } 
    
    
    
    private
    
    
    
     
    
    
    
    void
    
    
    
     btnTest_Click(
    
    
    
    object
    
    
    
     sender, EventArgs e) { startTime 
    
    
    
    =
    
    
    
     DateTime.Now; 
    
    
    
    string
    
    
    
     SrcConString; 
    
    
    
    string
    
    
    
     DesConString; SqlConnection SrcCon 
    
    
    
    =
    
    
    
     
    
    
    
    new
    
    
    
     SqlConnection(); SqlConnection DesCon 
    
    
    
    =
    
    
    
     
    
    
    
    new
    
    
    
     SqlConnection(); SqlCommand SrcCom 
    
    
    
    =
    
    
    
     
    
    
    
    new
    
    
    
     SqlCommand(); SqlDataAdapter SrcAdapter 
    
    
    
    =
    
    
    
     
    
    
    
    new
    
    
    
     SqlDataAdapter(); DataTable dt 
    
    
    
    =
    
    
    
     
    
    
    
    new
    
    
    
     DataTable(); SrcConString 
    
    
    
    =
    
    
    
     ConfigurationManager.ConnectionStrings[
    
    
    
    "
    
    
    
    SrcDBConnectionString
    
    
    
    "
    
    
    
    ].ConnectionString; DesConString 
    
    
    
    =
    
    
    
     ConfigurationManager.ConnectionStrings[
    
    
    
    "
    
    
    
    DesDBConnectionString
    
    
    
    "
    
    
    
    ].ConnectionString; SrcCon.ConnectionString 
    
    
    
    =
    
    
    
     SrcConString; SrcCom.Connection 
    
    
    
    =
    
    
    
     SrcCon; SrcCom.CommandText 
    
    
    
    =
    
    
    
     
    
    
    
    "
    
    
    
     SELECT * From Production.Product
    
    
    
    "
    
    
    
    ; SrcCom.CommandType 
    
    
    
    =
    
    
    
     CommandType.Text; SrcCom.Connection.Open(); SrcAdapter.SelectCommand 
    
    
    
    =
    
    
    
     SrcCom; SrcAdapter.Fill(dt); SqlBulkCopy DesBulkOp; DesBulkOp 
    
    
    
    =
    
    
    
     
    
    
    
    new
    
    
    
     SqlBulkCopy(DesConString, SqlBulkCopyOptions.UseInternalTransaction); DesBulkOp.BulkCopyTimeout 
    
    
    
    =
    
    
    
     
    
    
    
    500000000
    
    
    
    ; DesBulkOp.SqlRowsCopied 
    
    
    
    +=
    
    
    
     
    
    
    
    new
    
    
    
     SqlRowsCopiedEventHandler(OnRowsCopied); DesBulkOp.NotifyAfter 
    
    
    
    =
    
    
    
     dt.Rows.Count; 
    
    
    
    //
    
    
    
    DesBulkOp.ColumnMappings.Add("SrcCol", "DesCol");
    
    
    
     
    
    
    
     
    
    
    
    try
    
    
    
     { DesBulkOp.DestinationTableName 
    
    
    
    =
    
    
    
     
    
    
    
    "
    
    
    
    Product
    
    
    
    "
    
    
    
    ; DesBulkOp.WriteToServer(dt); } 
    
    
    
    catch
    
    
    
     (Exception ex) { MessageBox.Show(ex.Message); } 
    
    
    
    finally
    
    
    
     { SrcCon.Close(); DesCon.Close(); } } 
    
    
    
    private
    
    
    
     
    
    
    
    void
    
    
    
     OnRowsCopied(
    
    
    
    object
    
    
    
     sender, SqlRowsCopiedEventArgs args) { lblCounter.Text 
    
    
    
    +=
    
    
    
     args.RowsCopied.ToString() 
    
    
    
    +
    
    
    
     
    
    
    
    "
    
    
    
     rows are copied/r/n
    
    
    
    "
    
    
    
    ; TimeSpan copyTime 
    
    
    
    =
    
    
    
     DateTime.Now 
    
    
    
    -
    
    
    
     startTime; lblCounter.Text 
    
    
    
    +=
    
    
    
     
    
    
    
    "
    
    
    
    Copy Time:
    
    
    
    "
    
    
    
     
    
    
    
    +
    
    
    
     copyTime.Seconds.ToString() 
    
    
    
    +
    
    
    
     
    
    
    
    "
    
    
    
    .
    
    
    
    "
    
    
    
     
    
    
    
    +
    
    
    
     copyTime.Milliseconds.ToString() 
    
    
    
    +
    
    
    
     
    
    
    
    "
    
    
    
     seconds
    
    
    
    "
    
    
    
    ; } } }