The Method of C Creating Database and Importing sql Script

This article illustrates how C # creates a database and imports sql scripts. Share it for your reference, as follows:

C # Create a database:

/// <summary>
///  Create a database 
/// </summary>
/// <param name="connStr"> Connection string </param>
/// <param name="_strDBName"> Database name </param>
/// <returns></returns>
private static bool CreateDatabase(string connStr, string _strDBName)
{
  bool bSuccess = false;
  try
  {
    using (SqlConnection conMaster = new SqlConnection(connStr))
    {
      conMaster.Open();
      // Check if the Database has existed first
      string strExist = @"select * from dbo.sysdatabases where name='" + _strDBName + @"'";
      SqlCommand cmdExist = new SqlCommand(strExist, conMaster);
      SqlDataReader readerExist = cmdExist.ExecuteReader();
      bool bExist = readerExist.HasRows;
      readerExist.Close();
      if (bExist)
      {
        string strDel = @"drop database " + _strDBName;
        SqlCommand cmdDel = new SqlCommand(strDel, conMaster);
        cmdDel.ExecuteNonQuery();
      }
      // Create the database now;     
      string strDatabase = "Create Database [" + _strDBName + "]";
      SqlCommand cmdCreate = new SqlCommand(strDatabase, conMaster);
      cmdCreate.ExecuteNonQuery();
      conMaster.Close();
    }
    bSuccess = true;
  }
  catch (Exception e)
  {
    throw e;
  }
  return bSuccess;
}

C # Import sql script:

/// <summary>
///  Import sql Script 
/// </summary>
/// <param name="sqlConnString"> Connection database string </param>
/// <param name="varFileName"> Script path </param>
/// <returns></returns>
private static bool ExecuteSqlFile(string sqlConnString, string varFileName)
{
  if (!File.Exists(varFileName))
  {
    return false;
  }
  StreamReader rs = new StreamReader(varFileName, System.Text.Encoding.Default);
  ArrayList alSql = new ArrayList();
  string commandText = "";
  string varLine = "";
  while (rs.Peek() > -1)
  {
    varLine = rs.ReadLine();
    if (varLine == "")
    {
      continue;
    }
    if (varLine != "GO")
    {
      commandText += varLine;
      commandText += "\r\n";
    }
    else
    {
      commandText += "";
    }
  }
  alSql.Add(commandText);
  rs.Close();
  try
  {
    ExecuteCommand(sqlConnString, alSql);
    return true;
  }
  catch (Exception ex)
  {
    throw ex;
  }
}
private static void ExecuteCommand(string sqlConnString, ArrayList varSqlList)
{
 using (SqlConnection conn = new SqlConnection(sqlConnString))
 {
  conn.Open();
  //Don't use Transaction, because some commands cannot execute in one Transaction.
  //SqlTransaction varTrans = conn.BeginTransaction();
  SqlCommand command = new SqlCommand();
  command.Connection = conn;
  //command.Transaction = varTrans;
  try
  {
   foreach (string varcommandText in varSqlList)
   {
    command.CommandText = varcommandText;
    command.ExecuteNonQuery();
   }
   //varTrans.Commit();
  }
  catch (Exception ex)
  {
   //varTrans.Rollback();
   throw ex;
  }
  finally
  {
   conn.Close();
  }
 }
}

I hope this article is helpful to everyone's C # programming.