Question

C# winform 插入多条数据到oracle数据库！！！

现在实现在texbox里输入一条数据点击一下提交，怎么可以实现输入多次数据并在datagridveiw显示出来，点击提交，插入数据到相关表里。

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);
                    }
                }
            }
        }
    }
}

Answer 2

DataTable dt = new DataTable();
输入的数据放入DataTable里
dataGridView1.DataSource = dt;//将数据放入datagridview

每次点击提交时，读取datagridview数据存入数据库即可
//循环行
for (int i = 0; i < dataGridView1.Rows.Count - 1; i++)
{
str += dataGridView1.Rows[i].Cells["列1"].Value;//列
}