Question

大家晚上好

我在表中有一个包含字符串类型值的故障列。该列中的每个单元格可能包含多个逗号分隔的错误（例如：CPU不是wkg，HDD损坏等）。我的要求是读取每个单元格的值，将每个错误存储在ArrayList中，然后打印一个表格，使其显示两列（faultname，noOftimeItccured）。为了实现这一点，我正在对数组列表进行排序，然后找出每个错误的出现次数。我面临的问题 1.我没有得到预期的结果（逻辑中可能存在一些问题） 2.无法在webform中以表格的格式显示结果。 3.结果应显示在网格视图之后，而显示在菜单栏上方。

请指导我获得所需的结果，输出或其他方法来实现上述问题。

提前致谢。

        if (ddlSparesInfo.SelectedValue == "Fast Moving Spares")
        {
            lblMessage.Text = "";
            try
            {
                SqlCommand cmd = new SqlCommand("getFastMovingSpares", DBConn.Conn);
                DBConn.OpenConn();
                using (SqlDataReader dr = cmd.ExecuteReader())
                {
                    ArrayList faults = new ArrayList();
                    while (dr.Read())
                    {
                        string cellValue = dr.GetString(7);
                        string[] splitFaults = cellValue.Split(',');
                        for (int i = 0; i < splitFaults.Length; i++)
                        {
                            faults.Add(splitFaults[i]);
                        }
                    }

                    faults.Sort();
                    int count = 1;
                    for (int i = 1; i < faults.Count; i++)
                    {
                        if (faults[i - 1] == faults[i])
                        {
                            count++;
                        }
                        else
                        {
                            Response.Write("<table>");
                            Response.Write("<tr>");
                            Response.Write("<td>");
                            Response.Write("<p>" + faults[i] + "<p>");
                            Response.Write("</td>");
                            Response.Write("<td>");
                            Response.Write("<p>" + count + "<p>");
                            Response.Write("</td>");
                            Response.Write("</tr>");
                            Response.Write("</table>");
                            count = 0;
                        }

                    }
                }
            }
            catch (Exception)
            {

                throw;
            }
            finally
            {
                DBConn.CloseConn();

            }

        }
    }

Screenshot of Output

Screenshot of output after making changes

Answer 1

您可以使用Dictionary<key,value>来存储故障和计数。

 if (ddlSparesInfo.SelectedValue == "Fast Moving Spares")
            {
                lblMessage.Text = "";
                try
                {
                    SqlCommand cmd = new SqlCommand("getFastMovingSpares", DBConn.Conn);
                    DBConn.OpenConn();
                    using (SqlDataReader dr = cmd.ExecuteReader())
                    {

                        Dictionary<string, int> faults = new Dictionary<string, int>();
                        while (dr.Read())
                        {
                            string cellValue = dr.GetString(7);
                            string[] splitFaults = cellValue.Split(',');
                            for (int i = 0; i < splitFaults.Length; i++)
                            {
                                string currentFault = splitFaults[i];
                                if (faults.Keys.Any(x => x == currentFault))
                                {
                                    faults[currentFault] += 1;
                                }
                                else
                                {
                                    faults.Add(currentFault, 1);
                                }
                            }
                        }


                        Response.Write("<table>");
                        foreach (var fault in faults)
                        {

                            Response.Write("<tr>");
                            Response.Write("<td>");
                            Response.Write("<p>" + fault.Key + "<p>");
                            Response.Write("</td>");
                            Response.Write("<td>");
                            Response.Write("<p>" + fault.Value + "<p>");
                            Response.Write("</td>");
                            Response.Write("</tr>");
                        }

                        Response.Write("</table>");
                    }
                }
                catch (Exception)
                {

                    throw;
                }
                finally
                {
                    DBConn.CloseConn();

                }

}

如何在webform中显示ArrayList

1 个答案: