c# winform 修改，update语句,CRUD

heisetoufa

/// <summary>   /// 更新车中商品   /// </summary>   /// <param name="charid"></param>   /// <param name="bookid"></param>   /// <param name="num"></param>   /// <returns></returns>   public static int updatecar(string charid,string bookid,int num)   {    int i=0;    try    {     con = Driver.dricon();     com = new SqlCommand("bookup",con);     com.Parameters.Add("@CardID",charid);     com.Parameters.Add("@bookid",bookid);     com.Parameters.Add("@Quantity",num);     com.CommandType = CommandType.StoredProcedure;     i=com.ExecuteNonQuery();    }    catch(Exception ce)    {     ce.ToString();    }    finally    {     com.Dispose();     con.Close();    }    return i;   } 
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