标示 系统错误，高手来啊，急急急 55555555555
private   void   button1_Click(object   sender,   System.EventArgs   e)
{

string   tradecode   =   tradeCode.Text;
string   tradename   =   tradeName   .Text;
string   type   =   tradeType.Text;
string   AddSql= " ";
if(tradecode!= " ")AddSql+= "and   tradecode   like   '% "+tradecode+ "% ";
if(tradename!= " ")AddSql+= "and   tradename   like   '% "+tradename+ "% ";
if(type!= " ")AddSql+= "and   type   like   '% "+type   + "% ";


SqlConnection   conn=   new   SqlConnection( "Data   Source=(local);DataBase=db_Ewss;Integrated   Security=SSPI ");
conn.Open();

SqlDataAdapter   sda   =   new   SqlDataAdapter( "select   tradecode   as   [商品编号],tradename   as   [商品名称],type   as   [商品类型],unit   as   [单位],qty   as[   商品数量],price   as   [最后一次进价],saleprice   as   [最后一次销价],averageprice   as   [加权平均价],checkqty   as   [盘点数量]   from   tb_stock   where   type   like   '% "+type+ "% '   "+AddSql+ "   Order   by   tradecode   ",conn);
//FPara.connStr就是组件中的数据库连接字符串  
DataSet   ds   =   new   DataSet();
sda.Fill(ds, "tb_stock ");
StockCheck.DataSource   =   ds.Tables[ "tb_stock "].DefaultView;
Rds   =   ds;
StockCheck.SetDataBinding(ds, "tb_stock ");
   
   
                       

}


点击按钮想实现查询，但是显示“


未处理的“System.Data.SqlClient.SqlException”类型的异常出现在   system.data.dll   中。

其他信息:   系统错误。
”


绿色反光标示     sda.Fill(ds, "tb_stock ");语句
问题处在那里啊？怎么解决啊   ，谢谢拉

------解决方案--------------------
if(tradecode!= " ")AddSql+= "and tradecode like '% "+tradecode+ "% ' ";
if(tradename!= " ")AddSql+= "and tradename like '% "+tradename+ "% ' ";
if(type!= " ")AddSql+= "and type like '% "+type + "% ' ";

///不要忘记打结束 '
------解决方案--------------------
if(tradecode!= " ")AddSql+= "and tradecode like '% "+tradecode+ "% ";
//你看你代码里 % 后是不是少了个 ' ?

你完全没有看我上面发出的代码嘛。。。。
------解决方案--------------------
string tradecode = tradeCode.Text.Trim();
string tradename = tradeName .Text.Trim();

以免别人敲空格