Question

c#程序中想一次插入多条数据到oracle数据库中怎么实现

Answer 1

C#插入多条数据到oracle数据库：实例代码：using System.Data;using System.Drawing;using System.Text;using System.Windows.Forms;using System.IO;using System.Data.OleDb;using System.Data;using System.Data.OracleClient;using System.Text;namespace ExportInfo{ public partial class Form1 : Form { public Form1() { InitializeComponent(); } /// <summary> /// 打开对话框 /// </summary> /// <param name="sender"></param> /// <param name="e"></param> private void button1_Click(object sender, EventArgs e) { openFileDialog1.Filter = "电子表格(*.xls)|*.xls"; openFileDialog1.ShowDialog();//打开对话框 this.textBox1.Text = openFileDialog1.FileName;//得到文件=路径+名称 } /// <summary> /// 点击导入文件到数据库中 /// 代云超 /// </summary> /// <param name="sender"></param> /// <param name="e"></param> private void button2_Click(object sender, EventArgs e) { try { DataSet ds = ImportExcel(this.textBox1.Text);//将excel的对象先放到ds 中 if (ds != null) { if (ds.Tables[0].Rows.Count > 0)//如果ds中是有值的话 执行下面的操作 { if (ExportInfo(ds)) { MessageBox.Show("导入数据库成功!"); } else { MessageBox.Show("导入数据库失败!"); } } } } catch { MessageBox.Show("导入数据库失败 请检查导入文件是否填写正确!"); } } /// <summary> /// 导入文件的具体方法 /// 代云超 /// </summary> /// <param name="file">要导入的文件</param> /// <returns></returns> public static DataSet ImportExcel(string file) { FileInfo fileInfo = new FileInfo(file); if (!fileInfo.Exists) return null; string strConn = @"Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" + file + ";Extended Properties='Excel 8.0;HDR=NO;IMEX=1'"; OleDbConnection objConn = new OleDbConnection(strConn); DataSet dsExcel = new DataSet(); try { objConn.Open(); string strSql = "select * from [Sheet1$]"; OleDbDataAdapter odbcExcelDataAdapter = new OleDbDataAdapter(strSql, objConn); odbcExcelDataAdapter.Fill(dsExcel); return dsExcel; } catch (Exception ex) { throw ex; } } /// <summary> /// 这是将ds对象导入数据库的方法 /// 代云超 /// </summary> /// <returns>执行是否成功 如: 成功=true 失败=false</returns> public static bool ExportInfo(DataSet ds) { if (ds != null) { if (ds.Tables[0].Rows.Count > 0)//如果ds中是有值的话 执行下面的操作 { return Do(ds);//执行成功 } } return false;//执行失败 } public static bool Do(DataSet ds) { OracleConnection conNorthwind = new OracleConnection("Data Source=web1;User Id=UserName;Password=UserPassword;Integrated Security=no;");//链接字符串 OracleCommand commandNorthwind = new OracleCommand(); try { conNorthwind.Open();//打开数据库链接 OracleTransaction tranNorthwind = conNorthwind.BeginTransaction();//开始事务 for (int i = 0; i < ds.Tables[0].Rows.Count; i++) { DataRow dr = ds.Tables[0].Rows[i]; OracleParameter[] parameters = null;//为了得到插入数据库的参数 定义参数对象 为空 string sql = GetSqlString(dr, out parameters);//执行sql -->用out关键字得到参数 赋到parameters对象上 //插入数据库中 PrepareCommand(commandNorthwind, conNorthwind, tranNorthwind, sql, parameters); commandNorthwind.ExecuteNonQuery();//执行操作 } commandNorthwind.Transaction.Commit();//提交事务 conNorthwind.Close();//关闭数据库链接资源 return true; } catch//如果有异常 不一定要捕捉异常 但要rollback事务 { if (commandNorthwind.Transaction != null && conNorthwind != null) { commandNorthwind.Transaction.Rollback();//rollback事务 conNorthwind.Close();//关闭数据库链接 } return false; } } /// <summary> /// 每一行信息插入数据库中 /// </summary> /// <param name="dr">要插入的这一行ds-datarow对象</param> /// <returns>sql语句和用out关键字的参数数组对象</returns> public static string GetSqlString(DataRow dr, out OracleParameter[] parameters) { StringBuilder sb = new StringBuilder(); sb.Append("INSERT INTO TEXT VALUES(:ID,:NAME)"); parameters = new OracleParameter[] { new OracleParameter(":ID", Convert.ToString(dr[0])), new OracleParameter(":NAME", Convert.ToString(dr[1])) }; return sb.ToString();//将sqlreturn出去 } private static void PrepareCommand(OracleCommand cmd, OracleConnection conn, OracleTransaction trans, string cmdText, OracleParameter[] cmdParms) { PrepareCommand(cmd, conn, trans, cmdText, CommandType.Text, cmdParms); } //参数设定 此方法被重载 private static void PrepareCommand(OracleCommand cmd, OracleConnection conn, OracleTransaction trans, string cmdText, CommandType cmdType, OracleParameter[] cmdParms) { if (conn.State != ConnectionState.Open) { conn.Open(); } cmd.Connection = conn; cmd.CommandText = cmdText; if (trans != null) { cmd.Transaction = trans; } cmd.CommandType = cmdType; // CommandType.Text;//cmdType; if (cmdParms != null) { foreach (OracleParameter parameter in cmdParms) { if (parameter != null) { if (parameter.Value == null) { parameter.Value = DBNull.Value; } cmd.Parameters.Add(parameter); } } } } }}