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  OleDbParameter[] paras = new OleDbParameter[]
  {
  new OleDbParameter("@type",type),
  new OleDbParameter("@keyword",keyword)
  };

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string sql = "select * from [order] where "+type+" like '%'+@keyword+'%'";
  OleDbParameter[] paras = new OleDbParameter[]
  {
  new OleDbParameter("@keyword",keyword)
  };
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