protected void Button1_Click(object sender, EventArgs e)

    {

        string n_title, n_content, n_author, n_date,channel,lanmu,quotedfrom,quotedlink,subject,mysess;

        n_title = tx_title.Text.Trim();

        n_content = FCKeditor1.Value.ToString();

        n_author = tx_author.Text.Trim();

        n_date = tx_date.Text.Trim();

        channel = tx_channel.Text;

        lanmu = tx_lanmu.Text;

		quotedfrom=tx_quotedfrom.Text;

		quotedlink=tx_quotedlink.Text;

		subject=tx_subject.Text.Trim();

		mysess=Session["fid"].ToString();

		

		OleDbConnection conn=DBConnection.getConn();

		DataSet ds = new DataSet();  

		OleDbDataAdapter adapter = new OleDbDataAdapter();

		OleDbCommand insertCmd = new OleDbCommand();

        if (FileUpload1.FileName == "" || FileUpload1.FileName == null || FileUpload1.FileName == "null")

        {

		  insertCmd.CommandText= "insert into articles(title,author,quotedfrom,quotedlink,subject,[update],content,channel,lanmu,fid) values(?,?,?,?,?,?,?,?,?,?)";//我有选择地插入列值，没列出的列数据允许为空

		  insertCmd.CommandType=CommandType.Text;

		  insertCmd.Connection = conn;

		  insertCmd.Parameters.Add("?", OleDbType.VarWChar, 100, "title");

		  insertCmd.Parameters.Add("?", OleDbType.VarWChar, 10, "author");

		  insertCmd.Parameters.Add("?", OleDbType.VarWChar, 20, "quotedfrom");

		  insertCmd.Parameters.Add("?", OleDbType.VarWChar, 255, "quotedlink");

		  insertCmd.Parameters.Add("?", OleDbType.VarWChar, 10, "subject");

		  insertCmd.Parameters.Add("?", OleDbType.DBTimeStamp, 20,"update");

		  insertCmd.Parameters.Add("?", OleDbType.VarWChar, 8000, "content");

		  insertCmd.Parameters.Add("?", OleDbType.VarChar, 10, "channel");

		  insertCmd.Parameters.Add("?", OleDbType.VarChar, 20, "lanmu");

		  insertCmd.Parameters.Add("?", OleDbType.Char, 20, "fid");

		  adapter.InsertCommand=insertCmd;

		  

		  conn.Open();

		  using (OleDbTransaction tran = conn.BeginTransaction(IsolationLevel.ReadCommitted))  

		 {  

         adapter.InsertCommand.Transaction = tran;  

  

         try  

         {  

             

			 //insert  

             DataRow updateRow = ds.Tables["articles"].NewRow();  

             updateRow["title"] = n_title;  

             updateRow["author"] = n_author;

			 

			 updateRow["author"] = n_author;

             updateRow["quotedfrom"] = quotedfrom;  

             updateRow["quotedlink"] = quotedlink;

             updateRow["subject"] = subject;  

             updateRow["update"] = n_date;

             updateRow["content"] = n_content;

             updateRow["channel"] = channel;

             updateRow["lanmu"] = lanmu;  

			 updateRow["fid"]=Session["fid"];

             ds.Tables["articles"].Rows.Add(updateRow);  

             adapter.Update(ds, "articles");  

  

             tran.Commit();  

         }  

         catch (Exception ex)  

         {  

             try  

             {  

                 tran.Rollback();  

             }  

             catch (Exception exc)  

             {  

                 JS.JScript.Alert(ex.Message);

             }  

			//以下是我尝试找出问题的过程，填写表单的话它们均不为空

                        if (ds == null) {JS.JScript.Alert("ds对象为空！");}	

			if (string.IsNullOrEmpty(n_title)) {JS.JScript.Alert("n_title对象为空！");}

			if (string.IsNullOrEmpty(channel)) {JS.JScript.Alert("channel对象为空！");}	

			if (string.IsNullOrEmpty(lanmu)) {JS.JScript.Alert("lanmu对象为空！");}	

			if (string.IsNullOrEmpty(n_author)) {JS.JScript.Alert("n_author对象为空！");}

			

			if (string.IsNullOrEmpty(quotedfrom)) {JS.JScript.Alert("quotedfrom对象为空！");}

			if (string.IsNullOrEmpty(quotedlink)) {JS.JScript.Alert("quotelink对象为空！");}	

			if (string.IsNullOrEmpty(subject)) {JS.JScript.Alert("subject对象为空！");}	

			if (string.IsNullOrEmpty(n_date)) {JS.JScript.Alert("n_date对象为空！");}

			if (string.IsNullOrEmpty(n_content)) {JS.JScript.Alert("n_content对象为空！");}

			if (conn == null) {JS.JScript.Alert("conn对象为空！");}	

			if (insertCmd == null) {JS.JScript.Alert("ds对象为空！");}	

			if (string.IsNullOrEmpty(mysess)) {JS.JScript.Alert("Session对象为空！");}

				

//             JS.JScript.Alert(ex.Message);

				

         }  

     }  

     conn.Close();  

	 

	 }

else{//省略}