public static string ToJson(DataTable dt)
{
JavaScriptSerializer javaScriptSerializer = new JavaScriptSerializer {MaxJsonLength = Int32.MaxValue};
ArrayList arrayList = new ArrayList();
foreach (DataRow dataRow in dt.Rows)
{
Dictionary<string, object> dictionary = new Dictionary<string, object>();
foreach (DataColumn dataColumn in dt.Columns)
{
dictionary.Add(dataColumn.ColumnName, dataRow[dataColumn.ColumnName].ToString());
}
arrayList.Add(dictionary);
}
return javaScriptSerializer.Serialize(arrayList);
}
public static DataTable JsonToDataTable(string strJson)
{
strJson = strJson.Replace(",\"", "*\"").Replace("\":", "\"#").ToString();
var rg = new Regex(@"(?<={)[^:]+(?=:\[)", RegexOptions.IgnoreCase);
string strName = rg.Match(strJson).Value;
DataTable tb = null;
strJson = strJson.Substring(strJson.IndexOf("[", StringComparison.Ordinal) + 1);
strJson = strJson.Substring(0, strJson.IndexOf("]", StringComparison.Ordinal));
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('*');
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();
}
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;
}