标准的json用“分隔，不用'
public static string DataSetToJson(DataTable dt)
{
string json = string.Empty;
try
{
if (dt==null||dt.Rows.Count == 0)
{
return "";
}
json = "{";
json += "'table" + 1 + "':[";
for (int i = 0; i < dt.Rows.Count; i++)
{
json += "{";
for (int j = 0; j < dt.Columns.Count; j++)
{
json += "'" + dt.Columns[j].ColumnName + "':'" + dt.Rows[i][j].ToString() + "'";
if (j != dt.Columns.Count - 1)
{
json += ",";
}
}
json += "}";
if (i != dt.Rows.Count - 1)
{
json += ",";
}
}
json += "]";
json += "}";
}
catch (Exception ex)
{
throw new Exception(ex.Message);
}
return json;
}