C#中将JSON字符串转换为DataTable的实现方法

#region 将json转换为DataTable
/// <summary>
/// 将json转换为DataTable
/// </summary>
/// <param name="strJson">得到的json</param>
/// <returns></returns>
private DataTable JsonToDataTable(string strJson)
{
    //转换json格式，简化分割逻辑
    strJson = strJson.Replace(",\"", "*\"").Replace("\":", "\"#").ToString();
    
    //取出表名 (根节点名称)
    var rg = new Regex(@"(?<={)[^:]+(?=:\[)", RegexOptions.IgnoreCase);
    string strName = rg.Match(strJson).Value;
    DataTable tb = null;
    
    //去除表名，保留纯数据部分
    strJson = strJson.Substring(strJson.IndexOf("[") + 1);
    strJson = strJson.Substring(0, strJson.IndexOf("]"));
    
    //获取所有数据行对象
    rg = new Regex(@"(?<={)[^}]+(?=})");
    MatchCollection mc = rg.Matches(strJson);
    
    for (int i = 0; i < mc.Count; i++)
    {
        string strRow = mc[i].Value;
        string[] strRows = strRow.Split('*');
        
        //创建表结构 (仅在第一行执行)
        if (tb == null)
        {
            tb = new DataTable();
            tb.TableName = strName;
            foreach (string str in strRows)
            {
                var dc = new DataColumn();
                string[] strCell = str.Split('#');
                
                //清理列名中的引号
                if (strCell[0].Substring(0, 1) == "\"")
                {
                    int a = strCell[0].Length;
                    dc.ColumnName = strCell[0].Substring(1, a - 2);
                }
                else
                {
                    dc.ColumnName = strCell[0];
                }
                tb.Columns.Add(dc);
            }
            tb.AcceptChanges();
        }
        
        //增加内容 (填充数据行)
        DataRow dr = tb.NewRow();
        for (int r = 0; r < strRows.Length; r++)
        {
            //解析单元格值，清理多余符号
            dr[r] = strRows[r].Split('#')[1].Trim().Replace("，", ",")
                                  .Replace("：", ":").Replace("\"", "");
        }
        tb.Rows.Add(dr);
        tb.AcceptChanges();
    }
    return tb;
}
#endregion