真难啊，SqlDataAdapter 不更新数据库，也不提示错误！！
数据库不更新，也没有错误提示，怎么回事啊？向各位大虾求教了
代码说明如下：

private   SqlCommand   GetModNewsCom()
{
SqlCommand   modNewCom   =   new   SqlCommand( "update   News   set   Title   =   @Title,Content   =   @Content,NewsPic   =   @NewsPic,[Date]   =  

@Date,Status   =   @Status,Degree   =   @Degree   where   NewsID   =   @NewsID ",new  

SqlConnection( "server=127.0.0.1;uid=sa;pwd=123456;database=Data "));
modNewCom.CommandType   =   CommandType.Text;
SqlParameterCollection   sqlParam   =   modNewCom.Parameters;
//添加参数
sqlParam.Add(new   SqlParameter( "@NewsID ",SqlDbType.Int));
sqlParam.Add(new   SqlParameter( "@Title ",SqlDbType.NVarChar,100));
sqlParam.Add(new   SqlParameter( "@Content ",SqlDbType.NText));
sqlParam.Add(new   SqlParameter( "@NewsPic ",SqlDbType.NVarChar,100));
sqlParam.Add(new   SqlParameter( "@Date ",SqlDbType.SmallDateTime));
sqlParam.Add(new   SqlParameter( "@Status ",SqlDbType.TinyInt));
sqlParam.Add(new   SqlParameter( "@Degree ",SqlDbType.Int));
//设置参数映射
sqlParam[ "@NewsID "].SourceColumn   =   "NewsID ";
sqlParam[ "@Title "].SourceColumn   =   "Title ";
sqlParam[ "@Content "].SourceColumn   =   "Content ";
sqlParam[ "@NewsPic "].SourceColumn   =   "NewsPic ";
sqlParam[ "@Date "].SourceColumn   =   "[Date] ";
sqlParam[ "@Status "].SourceColumn   =   "Status ";
sqlParam[ "@Degree "].SourceColumn   =   "Degree ";

return   modNewCom;
}
public   bool   ModNews(DataSet   news)
{
      SqlDataAdapter   da=new   SqlDataAdapter();
      da.TableMappings.Add( "table ", "News ");
      if(da==null)
      {
        throw   new   System.ObjectDisposedException(   GetType().FullName   );
      }
      da.UpdateCommand=GetModNewsCom();
      if（da.Update(news, "News ")==0)
      {   return   false;}//运行结果是没有更新记录
      else
      {return   true;}
//DataRow   row   =   news.Tables[ "News "].Rows[0];
//string   title0=   row[ "Title "].ToString();
//string   content0   =   row[ "Content "].ToString();
//Int32   id0   =     Convert.ToInt32(row[ "NewsID "]);
//这几行注释是用来测试的，运行时，都有要更新的新内容
}

------解决方案--------------------
程序运行没错误? 帮你顶下
------解决方案--------------------
用Profiler跟踪sql看看

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http://www.cnblogs.com/feiyun0112/archive/2006/09/20/509783.html
------解决方案--------------------
你不是看看没有更新记录
DataSet的HasChanges
da.Update()只调用相应的SQL语句
需要ExecuteNonQuery();
------解决方案--------------------
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