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  • JSon转化为DaTable

      /// <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
    strJson = strJson.Replace(",\"", "*\"").Replace("\":", "\"#").ToString();
    //取出表名
    var rg = new Regex(@"(?<={)[^:]+(?=:\[)", RegexOptions.IgnoreCase);
    string strName = rg.Match(strJson).Value;
    DataTable tb = null;
    //去除表名
    strJson = strJson.Substring(strJson.IndexOf("[") + 1);
    strJson = strJson.Substring(0, strJson.IndexOf("]"));

    //获取数据
    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
    if (tb == null)
    {
    tb = new DataTable();
    tb.TableName = strName;
    foreach (string str in strRows)
    {
    var dc = new DataColumn();
    string[] strCell = str.Split('#');

    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
    DataRow dr = tb.NewRow();
    for (int r = 0; r < strRows.Length; r++)
    {
    dr[r] = strRows[r].Split('#')[1].Trim().Replace(",", ",").Replace(":", ":").Replace("\"", "");
    }
    tb.Rows.Add(dr);
    tb.AcceptChanges();
    }

    return tb;
    }
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  • 原文地址:https://www.cnblogs.com/520lw/p/3957349.html
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