下午，所以我在這個(gè)問題上待了好幾個(gè)小時(shí)，無法真正克服最后一個(gè)困難。以下是我正在編寫的該程序的代碼：using System;  using System.Collections.Generic;  using System.Linq;  using System.Text;  using System.Diagnostics;  using System.Data;  using System.Data.SqlClient;  using System.Configuration;  namespace Test  {    class Program    {      static void Main()      {        EventLog alog = new EventLog();        alog.Log = "Application";        alog.MachineName = ".";        foreach (EventLogEntry entry in alog.Entries)        {         SqlConnection connection1 = new SqlConnection(@"Data Source=.\sqlexpress;Initial Catalog=syslog2;Integrated Security=True");         SqlDataAdapter cmd = new SqlDataAdapter();         cmd.InsertCommand = new SqlCommand("INSERT INTO Application VALUES (@EventLog, @TimeGenerated, @EventType, @SourceName, @ComputerName, @InstanceId, @Message) ");         cmd.InsertCommand.Parameters.Add("@EventLog",SqlDbType.VarChar).Value = alog.Log;         cmd.InsertCommand.Parameters.Add("@TimeGenerated", SqlDbType.DateTime).Value = entry.TimeGenerated;         cmd.InsertCommand.Parameters.Add("@EventType", SqlDbType.VarChar).Value = entry.EntryType;         cmd.InsertCommand.Parameters.Add("@SourceName", SqlDbType.VarChar).Value = entry.Source;         cmd.InsertCommand.Parameters.Add("@ComputerName", SqlDbType.VarChar).Value = entry.MachineName;         cmd.InsertCommand.Parameters.Add("@InstanceId", SqlDbType.VarChar).Value = entry.InstanceId;         cmd.InsertCommand.Parameters.Add("@Message", SqlDbType.VarChar).Value = entry.Message;         connection1.Open();         cmd.InsertCommand.ExecuteNonQuery();         connection1.Close();        }       }    }  } 該代碼可以正常編譯，沒有錯(cuò)誤或警告，但是當(dāng)我運(yùn)行它時(shí)，只要它到達(dá)cmd.InsertCommand.ExecuteNonQuery（）;就可以了。我收到以下錯(cuò)誤：ExecuteNonQuery：連接屬性尚未初始化。關(guān)于我錯(cuò)過的任何想法？