C#同步SQL Server資料庫中的資料--資料庫同步工具[同步新資料]

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C#同步SQL Server資料庫中的資料1. 先寫個sql處理類：

using System;using System.Collections.Generic;using System.Data;using System.Data.SqlClient;using System.Text;namespace PinkDatabaseSync{    class DBUtility : IDisposable    {        private string Server;        private string Database;        private string Uid;        private string Password;        private string connectionStr;        private SqlConnection mySqlConn;        public void EnsureConnectionIsOpen()        {            if (mySqlConn == null)            {                mySqlConn = new SqlConnection(this.connectionStr);                mySqlConn.Open();            }            else if (mySqlConn.State == ConnectionState.Closed)            {                mySqlConn.Open();            }        }        public DBUtility(string server, string database, string uid, string password)        {            this.Server = server;            this.Database = database;            this.Uid = uid;            this.Password = password;            this.connectionStr = "Server=" + this.Server + ";Database=" + this.Database + ";User Id=" + this.Uid + ";Password=" + this.Password;        }        public int ExecuteNonQueryForMultipleScripts(string sqlStr)        {            this.EnsureConnectionIsOpen();            SqlCommand cmd = mySqlConn.CreateCommand();            cmd.CommandType = CommandType.Text;            cmd.CommandText = sqlStr;            return cmd.ExecuteNonQuery();        }        public int ExecuteNonQuery(string sqlStr)        {            this.EnsureConnectionIsOpen();            SqlCommand cmd = new SqlCommand(sqlStr, mySqlConn);            cmd.CommandType = CommandType.Text;            return cmd.ExecuteNonQuery();        }        public object ExecuteScalar(string sqlStr)        {            this.EnsureConnectionIsOpen();            SqlCommand cmd = new SqlCommand(sqlStr, mySqlConn);            cmd.CommandType = CommandType.Text;            return cmd.ExecuteScalar();        }        public DataSet ExecuteDS(string sqlStr)        {            DataSet ds = new DataSet();            this.EnsureConnectionIsOpen();            SqlDataAdapter sda= new SqlDataAdapter(sqlStr,mySqlConn);            sda.Fill(ds);            return ds;        }        public void BulkCopyTo(string server, string database, string uid, string password, string tableName, string primaryKeyName)        {            string connectionString = "Server=" + server + ";Database=" + database + ";User Id=" + uid + ";Password=" + password;            // Create destination connection            SqlConnection destinationConnector = new SqlConnection(connectionString);            SqlCommand cmd = new SqlCommand("SELECT * FROM " + tableName, destinationConnector);            // Open source and destination connections.            this.EnsureConnectionIsOpen();            destinationConnector.Open();            SqlDataReader readerSource = cmd.ExecuteReader();            bool isSourceContainsData = false;            string whereClause = " where ";            while (readerSource.Read())            {                isSourceContainsData = true;                whereClause += " " + primaryKeyName + "=" + readerSource[primaryKeyName].ToString() + " or ";            }            whereClause = whereClause.Remove(whereClause.Length - " or ".Length, " or ".Length);            readerSource.Close();            whereClause = isSourceContainsData ? whereClause : string.Empty;            // Select data from Products table            cmd = new SqlCommand("SELECT * FROM " + tableName + whereClause, mySqlConn);            // Execute reader            SqlDataReader reader = cmd.ExecuteReader();            // Create SqlBulkCopy            SqlBulkCopy bulkData = new SqlBulkCopy(destinationConnector);            // Set destination table name            bulkData.DestinationTableName = tableName;            // Write data            bulkData.WriteToServer(reader);            // Close objects            bulkData.Close();            destinationConnector.Close();            mySqlConn.Close();        }        public void Dispose()        {            if (mySqlConn != null)                mySqlConn.Close();        }    }}

2. 再寫個資料庫類型類：

using System;using System.Collections.Generic;using System.Text;namespace PinkDatabaseSync{    public class SQLDBSystemType    {        public static Dictionary<string, string> systemTypeDict        {            get{            var systemTypeDict = new Dictionary<string, string>();            systemTypeDict.Add("34", "image");            systemTypeDict.Add("35", "text");            systemTypeDict.Add("36", "uniqueidentifier");            systemTypeDict.Add("40", "date");            systemTypeDict.Add("41", "time");            systemTypeDict.Add("42", "datetime2");            systemTypeDict.Add("43", "datetimeoffset");            systemTypeDict.Add("48", "tinyint");            systemTypeDict.Add("52", "smallint");            systemTypeDict.Add("56", "int");            systemTypeDict.Add("58", "smalldatetime");            systemTypeDict.Add("59", "real");            systemTypeDict.Add("60", "money");            systemTypeDict.Add("61", "datetime");            systemTypeDict.Add("62", "float");            systemTypeDict.Add("98", "sql_variant");            systemTypeDict.Add("99", "ntext");            systemTypeDict.Add("104", "bit");            systemTypeDict.Add("106", "decimal");            systemTypeDict.Add("108", "numeric");            systemTypeDict.Add("122", "smallmoney");            systemTypeDict.Add("127", "bigint");            systemTypeDict.Add("240-128", "hierarchyid");            systemTypeDict.Add("240-129", "geometry");            systemTypeDict.Add("240-130", "geography");            systemTypeDict.Add("165", "varbinary");            systemTypeDict.Add("167", "varchar");            systemTypeDict.Add("173", "binary");            systemTypeDict.Add("175", "char");            systemTypeDict.Add("189", "timestamp");            systemTypeDict.Add("231", "nvarchar");            systemTypeDict.Add("239", "nchar");            systemTypeDict.Add("241", "xml");            systemTypeDict.Add("231-256", "sysname");            return systemTypeDict;            }        }    }}

3. 寫個同步資料庫中的資料：

public void BulkCopyTo(string server, string database, string uid, string password, string tableName, string primaryKeyName)        {            string connectionString = "Server=" + server + ";Database=" + database + ";User Id=" + uid + ";Password=" + password;            // Create destination connection            SqlConnection destinationConnector = new SqlConnection(connectionString);            SqlCommand cmd = new SqlCommand("SELECT * FROM " + tableName, destinationConnector);            // Open source and destination connections.            this.EnsureConnectionIsOpen();            destinationConnector.Open();            SqlDataReader readerSource = cmd.ExecuteReader();            bool isSourceContainsData = false;            string whereClause = " where ";            while (readerSource.Read())            {                isSourceContainsData = true;                whereClause += " " + primaryKeyName + "=" + readerSource[primaryKeyName].ToString() + " or ";            }            whereClause = whereClause.Remove(whereClause.Length - " or ".Length, " or ".Length);            readerSource.Close();            whereClause = isSourceContainsData ? whereClause : string.Empty;            // Select data from Products table            cmd = new SqlCommand("SELECT * FROM " + tableName + whereClause, mySqlConn);            // Execute reader            SqlDataReader reader = cmd.ExecuteReader();            // Create SqlBulkCopy            SqlBulkCopy bulkData = new SqlBulkCopy(destinationConnector);            // Set destination table name            bulkData.DestinationTableName = tableName;            // Write data            bulkData.WriteToServer(reader);            // Close objects            bulkData.Close();            destinationConnector.Close();            mySqlConn.Close();        }

 

4. 最後執行同步函數：

private void SyncDB_Click(object sender, EventArgs e)        {            string server = "localhost";            string dbname = "pinkCRM";            string uid = "sa";            string password = "password";            string server2 = "server2";            string dbname2 = "pinkCRM2";            string uid2 = "sa";            string password2 = "password2";            try            {                LogView.Text = "DB data is syncing!";                DBUtility db = new DBUtility(server, dbname, uid, password);                DataSet ds = db.ExecuteDS("SELECT sobjects.name FROM sysobjects sobjects WHERE sobjects.xtype = 'U'");                DataRowCollection drc = ds.Tables[0].Rows;                foreach (DataRow dr in drc)                {                    string tableName = dr[0].ToString();                    LogView.Text = LogView.Text + Environment.NewLine + " syncing table:" + tableName + Environment.NewLine;                    DataSet ds2 = db.ExecuteDS("SELECT * FROM sys.columns WHERE object_id = OBJECT_ID('dbo." + tableName + "')");                    DataRowCollection drc2 = ds2.Tables[0].Rows;                    string primaryKeyName = drc2[0]["name"].ToString();                    db.BulkCopyTo(server2, dbname2, uid2, password2, tableName, primaryKeyName);                                     LogView.Text = LogView.Text +"Done sync data for table:"+ tableName+ Environment.NewLine;                }                MessageBox.Show("Done sync db data successfully!");            }            catch (Exception exc)            {                MessageBox.Show(exc.ToString());            }        }

註： 這裡唯寫了對已有資料的不再插入資料，可以再提高為如果有資料更新，可以進行更新，那麼一個資料庫同步工具就可以完成了！

C#同步SQL Server資料庫中的資料--資料庫同步工具[同步新資料]