C# implements the method of converting json to DataTable-C#.Net Tutorial-php.cn

C# implements the method of converting json to DataTable

高洛峰

Release： 2017-01-18 09:41:53

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The example of this article describes the C# method of converting json to DataTable. Share it with everyone for your reference. The specific implementation method is as follows:

#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
    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(&#39;*&#39;);
 //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(&#39;#&#39;);
  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(&#39;#&#39;)[1].Trim().Replace("，", ",").Replace("：", ":").Replace("\"", "");
 }
 tb.Rows.Add(dr);
 tb.AcceptChanges();
    }
    return tb;
} 
#endregion

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