public static JArray ToJson(this IDataReader dataReader)
{
JArray jArray = new JArray();
try
{
while (dataReader.Read())
{
JObject jObject = new JObject();
for (int i = 0; i < dataReader.FieldCount; i++)
{
try
{
string strKey = dataReader.GetName(i);
if (dataReader[i] != DBNull.Value)
{
object obj = Convert.ChangeType(dataReader[i], dataReader.GetFieldType(i));
jObject.Add(strKey, JToken.FromObject(obj));
}
}
catch (Exception)
{
}
}
jArray.Add(jObject);
}
}
catch (Exception ex)
{
TaosException.ThrowExceptionForRC(-10001, "ToJson Error", ex);
}
return(jArray);
}
/// <summary>
/// Throws an exception with a specific Taos error code value.
/// </summary>
/// <param name="rc">The Taos error code corresponding to the desired exception.</param>
/// <param name="db">A handle to database connection.</param>
/// <remarks>
/// No exception is thrown for non-error result codes.
/// </remarks>
public static void ThrowExceptionForRC(string _commandText, TaosErrorResult taosError)
{
var te = new TaosException(taosError);
te.Data.Add("commandText", _commandText);
throw te;
}
public static void ThrowExceptionForRC(int code, string message, Exception ex)
{
var te = new TaosException(new TaosErrorResult()
{
Code = code, Error = message
}, ex);
throw te;
}
public static void ThrowExceptionForRC(IntPtr _taos)
{
var te = new TaosException(new TaosErrorResult()
{
Code = TDengine.ErrorNo(_taos), Error = TDengine.Error(_taos)
});
throw te;
}
public static List <T> ToObject <T>(this IDataReader dataReader)
{
List <T> jArray = new List <T>();
try
{
var t = typeof(T);
var pots = t.GetProperties();
while (dataReader.Read())
{
T jObject = Activator.CreateInstance <T>();
for (int i = 0; i < dataReader.FieldCount; i++)
{
try
{
string strKey = dataReader.GetName(i);
if (dataReader[i] != DBNull.Value)
{
var pr = from p in pots where p.Name == strKey && p.CanWrite select p;
if (pr.Any())
{
var pi = pr.FirstOrDefault();
pi.SetValue(jObject, Convert.ChangeType(dataReader[i], pi.PropertyType));
}
}
}
catch (Exception)
{
}
}
jArray.Add(jObject);
}
}
catch (Exception ex)
{
TaosException.ThrowExceptionForRC(-10002, $"ToObject<{nameof(T)}> Error", ex);
}
return(jArray);
}
