C# Html格式内容转Csv内容包括table(重点在rowspan和colspan合并),p,div元素

Html格式内容转Csv内容，包括table(重点在rowspan和colspan合并),p,div元素，table不能包含嵌套功能。

/// <summary>
/// Html格式内容转Csv内容包括table(重点在rowspan和colspan合并),p,div元素
/// </summary>
/// <param name="hrml"></param>
/// <returns></returns>
private string HtmlToCsv(string hrml)
{
    HtmlAgilityPack.HtmlDocument doc = new HtmlAgilityPack.HtmlDocument();
    doc.LoadHtml(hrml);
    StringBuilder sbLines = new StringBuilder();
    HtmlAgilityPack.HtmlNodeCollection tList = doc.DocumentNode.SelectNodes("//table");
    if (tList != null)
    {
        foreach (HtmlAgilityPack.HtmlNode table in tList)
        {
            sbLines.AppendLine("#flag_table#,");
            HtmlAgilityPack.HtmlNodeCollection rows = table.SelectNodes("//tr");
            if (rows != null)
            {
                int colCount = 0;
                StringBuilder sbTable = new StringBuilder();
                foreach (HtmlAgilityPack.HtmlNode td in rows[0].ChildNodes.Where(m => m.OriginalName.ToLower() == "td"))
                {
                    HtmlAgilityPack.HtmlAttribute attr = td.Attributes["colspan"];
                    int colspan = (attr != null) ? int.Parse(attr.Value) : 1;
                    colCount = colCount + colspan;
                }
                int rowCount = rows.Count;

                string[][] arr = new string[rowCount][];
                for (int r = 0; r < rowCount; r++)
                {
                    arr[r] = new string[colCount];
                }

                //填充区域
                for (int r = 0; r < rowCount; r++)
                {
                    HtmlAgilityPack.HtmlNode tr = rows[r];
                    List<HtmlAgilityPack.HtmlNode> cols = tr.ChildNodes.Where(m => m.OriginalName.ToLower() == "td").ToList();

                    int colspan = 0;
                    int rowspan = 0;
                    for (int c = 0; c < cols.Count; c++)
                    {
                        HtmlAgilityPack.HtmlAttribute cAttr = cols[c].Attributes["colspan"];
                        colspan = (cAttr != null) ? int.Parse(cAttr.Value) : 1;
                        HtmlAgilityPack.HtmlAttribute rAttr = cols[c].Attributes["rowspan"];
                        rowspan = (rAttr != null) ? int.Parse(rAttr.Value) : 1;
                        string text = cols[c].InnerText.Replace("&nbsp;", "").Replace(",", "，").Replace("
", "").Replace("
", "").Trim();

                        if (colspan == 1 && rowspan == 1)
                        {
                            continue;
                        }

                        bool isFirst = true;
                        int rFill = r + rowspan;
                        for (int ri = r; ri < rFill; ri++)
                        {
                            int cFill = c + colspan;
                            for (int ci = c; ci < cFill; ci++)
                            {
                                if (isFirst)
                                {
                                    text = (text == string.Empty) ? " " : text;
                                    arr[ri][ci] = text;
                                    isFirst = false;
                                }
                                else
                                {
                                    arr[ri][ci] = string.Empty;
                                }
                            }
                        }
                    }
                }

                //填充单元
                for (int r = 0; r < rowCount; r++)
                {
                    HtmlAgilityPack.HtmlNode tr = rows[r];
                    List<HtmlAgilityPack.HtmlNode> cols = tr.ChildNodes.Where(m => m.OriginalName.ToLower() == "td").ToList();
                    Queue<string> queue = new Queue<string>();
                    for (int c = 0; c < cols.Count; c++)
                    {
                        string text = cols[c].InnerText.Replace("&nbsp;", "").Replace(",", "，").Replace("
", "").Replace("
", "").Trim();
                        queue.Enqueue(text);
                    }
                    for (int c = 0; c < colCount; c++)
                    {
                        if (arr[r][c] == null)
                        {
                            string text = queue.Count > 0 ? queue.Dequeue() : string.Empty;
                            arr[r][c] = text;
                        }
                        else
                        {
                            if (arr[r][c] != string.Empty)
                            {
                                if (queue.Count > 0)
                                {
                                    queue.Dequeue();
                                }
                            }
                        }
                    }
                }

                //组装成cvs格式内容
                foreach (string[] cols in arr)
                {
                    foreach (string col in cols)
                    {
                        sbLines.Append(col + ",");
                    }
                    sbLines.AppendLine(",");
                }
                table.RemoveAll();
            }
        }
    }

    HtmlAgilityPack.HtmlNodeCollection pList = doc.DocumentNode.SelectNodes("//p");
    if (pList != null)
    {
        sbLines.AppendLine("#flag_text#,");
        foreach (HtmlAgilityPack.HtmlNode p in pList)
        {
            string text = p.InnerText.Replace("&nbsp;", "").Replace(",", "，").Replace("
", "").Replace("
", "").Trim();
            text = GetTextByHtml(text);
            if (!string.IsNullOrWhiteSpace(text))
            {
                sbLines.Append(text + ",");
                sbLines.AppendLine(",");
            }
            else
            {
                sbLines.AppendLine(",");
            }
            p.RemoveAll();
        }
    }

    HtmlAgilityPack.HtmlNodeCollection dList = doc.DocumentNode.SelectNodes("//div");
    if (pList != null)
    {
        sbLines.AppendLine("#flag_text#,");
        foreach (HtmlAgilityPack.HtmlNode div in pList)
        {
            string text = div.InnerText.Replace("&nbsp;", "").Replace(",", "，").Replace("
", "").Replace("
", "").Trim();
            text = GetTextByHtml(text);
            if (!string.IsNullOrWhiteSpace(text))
            {
                sbLines.Append(text + ",");
                sbLines.AppendLine(",");
            }
            else
            {
                sbLines.AppendLine(",");
            }
            //div.RemoveAll();
        }
    }
    return sbLines.ToString();
}

html: 

csv:

url:http://www.cnblogs.com/dreamman/p/5343924.html