关于csharp的实例教程

using System;  using System.Collections.Generic;  using System.ComponentModel;  using System.Data;  using System.Drawing;  using System.Linq;  using System.Text;  using System.Windows.Forms;  using Microsoft.SqlServer.Management.Common;//需添加microsoft.sqlserver.connectioninfo.dll的引用  using Microsoft.SqlServer.Management;//  using Microsoft.SqlServer.Management.Smo;//在microsoft.sqlserver.smo.dll中  using Microsoft.SqlServer.Management.Smo.RegisteredServers;//Microsoft.SqlServer.SmoExtended  using Microsoft.SqlServer.Management.Smo.Broker;  using Microsoft.SqlServer.Management.Smo.Agent;  using Microsoft.SqlServer.Management.Smo.SqlEnum;  using Microsoft.SqlServer.Management.Smo.Mail;  using Microsoft.SqlServer.Management.Smo.Internal;  using System.IO;  using System.Data.SqlClient;  using System.Text;  using System.Text.RegularExpressions;    ////引用位置： C:\Program Files\Microsoft SQL Server\100\SDK\Assemblies\             /// <summary>          /// 涂聚文 2017-06-02          /// </summary>          /// <param name="sender"></param>          /// <param name="e"></param>          private void button2_Click(object sender, EventArgs e)          {              //Connect to the local, default instance of SQL Server.                 Microsoft.SqlServer.Management.Common.ServerConnection conn = new ServerConnection(@"GEOVI-BD87B6B9C\GEOVINDU", "geovindu", "888888");              Server srv = new Server(conn);              //Reference the AdventureWorks2012 database.                 Database db = srv.Databases["du"];                //Define a UserDefinedFunction object variable by supplying the parent database and the name arguments in the constructor.                 UserDefinedFunction udf = new UserDefinedFunction(db, "IsOWeek");                //Set the TextMode property to false and then set the other properties.                 udf.TextMode = false;              udf.DataType = DataType.Int;              udf.ExecutionContext = ExecutionContext.Caller;              udf.FunctionType = UserDefinedFunctionType.Scalar;              udf.ImplementationType = ImplementationType.TransactSql;                //Add a parameter.                   UserDefinedFunctionParameter par = new UserDefinedFunctionParameter(udf, "@DATE", DataType.DateTime);              udf.Parameters.Add(par);                //Set the TextBody property to define the user-defined function.                 udf.TextBody = "BEGIN DECLARE @ISOweek int SET @ISOweek= DATEPART(wk,@DATE)+1 -DATEPART(wk,CAST(DATEPART(yy,@DATE) as CHAR(4))+'0104') IF (@ISOweek=0) SET @ISOweek=dbo.ISOweek(CAST(DATEPART(yy,@DATE)-1 AS CHAR(4))+'12'+ CAST(24+DATEPART(DAY,@DATE) AS CHAR(2)))+1 IF ((DATEPART(mm,@DATE)=12) AND ((DATEPART(dd,@DATE)-DATEPART(dw,@DATE))>= 28)) SET @ISOweek=1 RETURN(@ISOweek) END;";                //Create the user-defined function on the instance of SQL Server.                 udf.Create();                //Remove the user-defined function.                // udf.Drop();            }          /// <summary>          /// 涂聚文 2017-06-02          /// </summary>          /// <param name="sender"></param>          /// <param name="e"></param>          private void button3_Click(object sender, EventArgs e)          {              try              {                    //涂聚文 2017-06-02                  Microsoft.SqlServer.Management.Common.ServerConnection serverconn = new ServerConnection(@"GEOVI-BD87B6B9C\GEOVINDU", "geovindu", "888888");                  string sqlConnectionString = @"Data Source=GEOVI-BD87B6B9C\GEOVINDU;Initial Catalog=Du;User ID=Geovin Du;Password=888888";                  //1.有报错问题                  //FileInfo file = new FileInfo("fu.sql");                  //string script = file.OpenText().ReadToEnd();                  //script = script.Replace("\t", " ").Replace("\n", " ");                  //SqlConnection conn = new SqlConnection(sqlConnectionString);                  //Server server = new Server(serverconn);//new ServerConnection(conn)                  //Database db = server.Databases["du"];                  //server.ConnectionContext.ExecuteNonQuery(script);//出问题                        SqlConnection conn = new SqlConnection(sqlConnectionString);                      conn.Open();                  string script = File.ReadAllText("fu.sql");                        // split script on GO command                      IEnumerable<string> commandStrings = Regex.Split(script, @"^\s*GO\s*$", RegexOptions.Multiline | RegexOptions.IgnoreCase);                      foreach (string commandString in commandStrings)                      {                          if (commandString.Trim() != "")                          {                              new SqlCommand(commandString, conn).ExecuteNonQuery();                          }                      }                      MessageBox.Show("Database updated successfully.");                                                  }              catch(Exception ex)              {                  MessageBox.Show(ex.Message.ToString());              }          }            /// <summary>          /// Run an .sql script trough sqlcmd.          /// </summary>          /// <param name="fileName">the .sql script</param>          /// <param name="machineName">The name of the server.</param>          /// <param name="databaseName">The name of the database to connect to.</param>          /// <param name="trustedConnection">Use a trusted connection.</param>          /// <param name="args">The arguments passed to the sql script.</param>          public void RunSqlScript(string fileName, string machineName, string databaseName, bool trustedConnection, string[] args)          {              // simple checks              if (!Path.GetExtension(fileName).Equals(".sql", StringComparison.InvariantCulture))                  throw new Exception("The file doesn't end with .sql.");                // check for used arguments              foreach (var shortArg in new[] { "S", "d", "E", "i" })              {                  var tmpArg = args.SingleOrDefault(a => a.StartsWith(string.Format("-{0}", shortArg), StringComparison.InvariantCulture));                  if (tmpArg != null)                      throw new ArgumentException(string.Format("Cannot pass -{0} argument to sqlcmd for a second time.", shortArg));              }                // check the params for trusted connection.              var userArg = args.SingleOrDefault(a => a.StartsWith("-U", StringComparison.InvariantCulture));              var passwordArg = args.SingleOrDefault(a => a.StartsWith("-P", StringComparison.InvariantCulture));              if (trustedConnection)              {                  if (userArg != null)                      throw new ArgumentException("Cannot pass -H argument when trustedConnection is used.");                  if (passwordArg != null)                      throw new ArgumentException("Cannot pass -P argument when trustedConnection is used.");              }              else              {                  if (userArg == null)                      throw new ArgumentException("Exspecting username(-H) argument when trustedConnection is not used.");                  if (passwordArg == null)                      throw new ArgumentException("Exspecting password(-P) argument when trustedConnection is not used.");              }                  // set the working directory. (can be needed with ouputfile)              // TODO: Test if the above statement is correct              var tmpDirectory = Directory.GetCurrentDirectory();              var directory = Path.IsPathRooted(fileName) ? Path.GetDirectoryName(fileName) : Path.Combine(fileName);//this.ProjectRoot              var file = Path.GetFileName(fileName);              Directory.SetCurrentDirectory(directory);                // create cmd line              var cmd = string.Format(string.Format("SQLCMD -S {0} -d {1} -i \"{2}\"", machineName, databaseName, file));              foreach (var argument in args.Where(a => a.StartsWith("-", StringComparison.InvariantCultureIgnoreCase)))                  cmd += " " + argument;              if (trustedConnection)                  cmd += " -E";                // create the process              var process = new System.Diagnostics.Process();              process.StartInfo.FileName = "cmd";              process.StartInfo.CreateNoWindow = true;              process.StartInfo.UseShellExecute = false;              process.StartInfo.RedirectStandardOutput = true;              process.StartInfo.RedirectStandardInput = true;                // start the application              process.Start();              process.StandardInput.WriteLine("@ECHO OFF");              process.StandardInput.WriteLine(string.Format("cd {0}", directory));              process.StandardInput.WriteLine(cmd);              process.StandardInput.WriteLine("EXIT");              process.StandardInput.Flush();              process.WaitForExit();                // write the output to my debug folder and restore the current directory             // Debug.Write(process.StandardOutput.ReadToEnd());              Directory.SetCurrentDirectory(tmpDirectory);          }    //              public void Restore(OdbcConnection sqlcon, string DatabaseFullPath, string backUpPath)  //           {  //               using (sqlcon)  //               {  //                   string UseMaster = "USE master";  //                   OdbcCommand UseMasterCommand = new OdbcCommand(UseMaster, sqlcon);  //                   UseMasterCommand.ExecuteNonQuery();  //                   // The below query will rollback any transaction which is running on that database and brings SQL Server database in a single user mode.  //                   string Alter1 = @"ALTER DATABASE  //                   [" + DatabaseFullPath + "] SET Single_User WITH Rollback Immediate";  //                   OdbcCommand Alter1Cmd = new OdbcCommand(Alter1, sqlcon);  //                   Alter1Cmd.ExecuteNonQuery();  //                   // The below query will restore database file from disk where backup was taken ....  //                   string Restore = @"RESTORE DATABASE  //                   [" + DatabaseFullPath + "] FROM DISK = N'" +  //                   backUpPath + @"' WITH  FILE = 1,  NOUNLOAD,  STATS = 10";  //                   OdbcCommand RestoreCmd = new OdbcCommand(Restore, sqlcon);  //                   RestoreCmd.ExecuteNonQuery();  //                   // the below query change the database back to multiuser  //                   string Alter2 = @"ALTER DATABASE  //                   [" + DatabaseFullPath + "] SET Multi_User";  //                   OdbcCommand Alter2Cmd = new OdbcCommand(Alter2, sqlcon);  //                   Alter2Cmd.ExecuteNonQuery();  //                   Cursor.Current = Cursors.Default;  //               }  //            }

<startup  useLegacyV2RuntimeActivationPolicy="true">    <supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.0"/>    <supportedRuntime version="v2.0.50727"/>  </startup>

<startup useLegacyV2RuntimeActivationPolicy="true">      <supportedRuntime version="v4.0"/>    </startup>