C#一次性向資料庫插入上萬條資料的方法
阿新 • • 發佈:2019-02-04
一次性插入上萬條資料的寫法
1.
- /// <summary>
- /// DataTable批量新增(有事務)
- /// </summary> /
- // <param name="Table">資料來源</param>
- /// <param name="Mapping">定義資料來源和目標源列的關係集合</param>
- /// <param name="DestinationTableName">目標表</param>
-
publicstaticbool MySqlBulkCopy(DataTable Table, SqlBulkCopyColumnMapping[] Mapping,
- bool Bool = true;
- using (SqlConnection con = new SqlConnection(ConnectionString)) {
- con.Open();
- using (SqlTransaction Tran = con.BeginTransaction()) {
- using (SqlBulkCopy Copy = new SqlBulkCopy(con,SqlBulkCopyOptions.KeepIdentity,Tran)) {
-
Copy.DestinationTableName = DestinationTableName;//指定目標表
- if (Mapping != null) { //如果有資料
- foreach (SqlBulkCopyColumnMapping Map in Mapping) {
- Copy.ColumnMappings.Add(Map); } }
- try { Copy.WriteToServer(Table);//批量新增
- Tran.Commit();//提交事務 }
- catch { Tran.Rollback();
- //回滾事務 Bool = false; } } } }
- return Bool; }
2.MSSQL使用SqlBulkCopy,傳資料來源,表名,列影射,我匯入150萬幾秒完成
- /// <summary>
- /// 使用SqlBulkCopy批量插入,只限SQLServer
- /// 缺點,沒有返回行數
- /// </summary>
- /// <param name="table">填充的DataTable,支援其它資料來源,請看過載</param>
- /// <param name="tableName">資料庫對應表名</param>
- /// <param name="columns">插入表對應的列名集合</param>
- publicvoid SqlBulkCopyInsert(DataTable table, string tableName, string[] columns)
- {
- SqlBulkCopy sbc = new SqlBulkCopy("接連字串");
- sbc.DestinationTableName = tableName;
- foreach (string col in columns)
- {
- sbc.ColumnMappings.Add(col, col);
- }
- sbc.WriteToServer(table);
- }
3.其它資料庫,將資料查到一個datatable,往table填充資料,再在adpt.Update(table)
- /// <summary>
- /// 多行插入,Connection/Command/DataAdapter看你連線的資料庫型別
- /// 進行相應的替換即可
- /// </summary>
- /// <param name="ds">填充資料後的資料集</param>
- /// <returns>受影響行數</returns>
- publicint MultyInsert(DataSet ds)
- {
- int result = 0;
- IDbConnection con = new OracleConnection("連線字串");
- con.Open();
- IDbCommand cmd = new OracleCommand();
- cmd.CommandText = "Insert into Member(UserName,Password) values(@name,@password)";
- IDbDataParameter namePar = cmd.CreateParameter();
- namePar.ParameterName = "@name";
- namePar.SourceColumn = "UserName";
- namePar.SourceVersion = DataRowVersion.Original;
- namePar.DbType = DbType.String;
- cmd.Parameters.Add(namePar);
- IDbDataParameter passPar = cmd.CreateParameter();
- passPar.ParameterName = "@pass";
- passPar.DbType = DbType.String;
- passPar.SourceColumn = "Password";
- passPar.SourceVersion = DataRowVersion.Original;
- cmd.Parameters.Add(passPar);
- IDbDataAdapter adpt = new OracleDataAdapter();
- adpt.InsertCommand = cmd;
- try
- {
- result = adpt.Update(ds);
- }
- catch (Exception)
- {
- throw;
- }
- finally
- {
- con.Close();
- }
- return result;
- }