static void Main(string[] args)
{
// Arguments for update
int lookFor = 1;
string value = "AC/DC";
// Arguments for insert
lookFor = Int16.MaxValue;
value = "joedotnet";
using (SqlCeConnection conn = new SqlCeConnection(@"Data Source=C:\Users\xeej\Downloads\ChinookPart2\Chinook.sdf"))
{
conn.Open();
using (SqlCeCommand cmd = new SqlCeCommand("Artist"))
{
SqlCeUpdatableRecord myRec = null;
cmd.Connection = conn;
cmd.CommandType = System.Data.CommandType.TableDirect;
cmd.IndexName = "PK_Artist";
SqlCeResultSet myResultSet = cmd.ExecuteResultSet(ResultSetOptions.Updatable | ResultSetOptions.Scrollable);
bool found = myResultSet.Seek(DbSeekOptions.FirstEqual, new object[] { lookFor });
if (found)
{
myResultSet.Read();
}
else
{
myRec = myResultSet.CreateRecord();
}
foreach (KeyValuePair <int, object> item in CommonMethodToFillRowData(value))
{
if (found)
{
myResultSet.SetValue(item.Key, item.Value);
}
else
{
myRec.SetValue(item.Key, item.Value);
}
}
if (found)
{
myResultSet.Update();
}
else
{
myResultSet.Insert(myRec);
}
}
}
}
private void FlushSamples(SqlCeResultSet resultSet)
{
//now to update the samples table
foreach (KeyValuePair <int, SortedList <int, int> > sampleKvp in m_samples)
{
if (sampleKvp.Value.Count == 0)
{
continue;
}
int threadOrdinal = resultSet.GetOrdinal("ThreadId");
int functionOrdinal = resultSet.GetOrdinal("FunctionId");
int hitsOrdinal = resultSet.GetOrdinal("HitCount");
foreach (KeyValuePair <int, int> threadKvp in sampleKvp.Value)
{
if (!resultSet.Seek(DbSeekOptions.FirstEqual, threadKvp.Key, sampleKvp.Key))
{
//doesn't exist in the table, we need to add it
var row = resultSet.CreateRecord();
row[threadOrdinal] = threadKvp.Key;
row[functionOrdinal] = sampleKvp.Key;
row[hitsOrdinal] = threadKvp.Value;
resultSet.Insert(row, DbInsertOptions.PositionOnInsertedRow);
}
else
{
resultSet.Read();
resultSet.SetValue(hitsOrdinal, (int)resultSet[hitsOrdinal] + threadKvp.Value);
resultSet.Update();
}
}
sampleKvp.Value.Clear();
}
}
private void FlushSamples(SqlCeResultSet resultSet)
{
//now to update the samples table
foreach(KeyValuePair<int, SortedList<int, int>> sampleKvp in m_samples)
{
if(sampleKvp.Value.Count == 0)
continue;
int threadOrdinal = resultSet.GetOrdinal("ThreadId");
int functionOrdinal = resultSet.GetOrdinal("FunctionId");
int hitsOrdinal = resultSet.GetOrdinal("HitCount");
foreach(KeyValuePair<int, int> threadKvp in sampleKvp.Value)
{
if(!resultSet.Seek(DbSeekOptions.FirstEqual, threadKvp.Key, sampleKvp.Key))
{
//doesn't exist in the table, we need to add it
var row = resultSet.CreateRecord();
row[threadOrdinal] = threadKvp.Key;
row[functionOrdinal] = sampleKvp.Key;
row[hitsOrdinal] = threadKvp.Value;
resultSet.Insert(row, DbInsertOptions.PositionOnInsertedRow);
}
else
{
resultSet.Read();
resultSet.SetValue(hitsOrdinal, (int) resultSet[hitsOrdinal] + threadKvp.Value);
resultSet.Update();
}
}
sampleKvp.Value.Clear();
}
}
public void SqlCeReadAfterUpdateTest()
{
SqlCeEngine LEngine = new SqlCeEngine(@"Data Source=TestDatabase.sdf");
if (!File.Exists("TestDatabase.sdf"))
{
LEngine.CreateDatabase();
}
using (SqlCeConnection LConnection = new SqlCeConnection("Data Source=TestDatabase.sdf"))
{
LConnection.Open();
using (SqlCeCommand LCommand = LConnection.CreateCommand())
{
LCommand.CommandText = "select count(*) from INFORMATION_SCHEMA.TABLES where TABLE_NAME = 'Test'";
if ((int)LCommand.ExecuteScalar() != 0)
{
LCommand.CommandText = "drop table Test";
LCommand.ExecuteNonQuery();
}
LCommand.CommandText = "create table Test ( ID int not null, Name nvarchar(20), constraint PK_Test primary key ( ID ) )";
LCommand.ExecuteNonQuery();
LCommand.CommandText = "insert into Test ( ID, Name ) values ( 1, 'Joe' )";
LCommand.ExecuteNonQuery();
}
using (SqlCeTransaction LTransaction = LConnection.BeginTransaction(System.Data.IsolationLevel.ReadCommitted))
{
try
{
using (SqlCeCommand LCommand = LConnection.CreateCommand())
{
LCommand.CommandType = System.Data.CommandType.TableDirect;
LCommand.CommandText = "Test";
LCommand.IndexName = "PK_Test";
LCommand.SetRange(DbRangeOptions.Default, null, null);
using (SqlCeResultSet LResultSet = LCommand.ExecuteResultSet(ResultSetOptions.Scrollable | ResultSetOptions.Sensitive | ResultSetOptions.Updatable))
{
if (!LResultSet.Read())
{
throw new Exception("Expected row");
}
if ((string)LResultSet[1] != "Joe")
{
throw new Exception("Expected Joe row");
}
LResultSet.SetValue(1, "Joes");
LResultSet.Update();
LResultSet.ReadFirst();
//if (!LResultSet.Read())
// throw new Exception("Expected row");
if ((string)LResultSet[1] != "Joes")
{
throw new Exception("Expected Joes row");
}
LResultSet.SetValue(1, "Joe");
LResultSet.Update();
}
}
LTransaction.Commit(CommitMode.Immediate);
}
catch
{
LTransaction.Rollback();
throw;
}
}
using (SqlCeTransaction LTransaction = LConnection.BeginTransaction(System.Data.IsolationLevel.ReadCommitted))
{
}
}
}
protected override void InternalSetValue(int index, object tempValue)
{
_resultSet.SetValue(index, NativeToStoreValue(tempValue));
}
// Permite realizar la integración de datos de a partir de un dataset serializado
// El dataset debe contener tablas con nombres y campos iguales a los creados en la base de
// datos
public bool IntegrarDatos(string sSerializedData, bool bUpdateCurrentRows, IEstadoCarga Estado)
{
StringReader sr = new StringReader(sSerializedData);
string sLine = null;
string[] sFields = null;
string[] sFieldsTypes = null;
string[] sValues = null;
SqlCeResultSet rs = null;
SqlCeUpdatableRecord record = null;
int I = 0;
int J = 0;
int nIndex = 0;
int nTableCount = 0;
int nRowCount = 0;
int nTotalRowCount = 0;
int nTables = 0;
int nRows = 0;
int nTotalRows = 0;
int nProgresoTabla = 0;
int nProgresoTotal = 0;
DataTable dtNucleo = null;
DataRow row = null;
object FieldValue = null;
try
{
// Se lee la liena con el número de tablas serializadas y el numero total de filas a procesar
sLine = sr.ReadLine();
nTableCount = System.Convert.ToInt32(sLine.Substring(12));
sLine = sr.ReadLine();
nTotalRowCount = System.Convert.ToInt32(sLine.Substring(15));
nProgresoTotal = 0;
nTables = 0;
nTotalRows = 0;
this.OpenConnection();
while (!Estado.Cancelado)
{
// Se obtiene el nombre y cantidad de registros de cada tabla serializada
string sTableName = null;
sLine = sr.ReadLine();
if (sLine == null)
{
break;
}
sTableName = sLine.Substring(7);
sLine = sr.ReadLine();
nRowCount = System.Convert.ToInt32(sLine.Substring(10));
if (nRowCount > 0)
{
nProgresoTabla = 0;
nRows = 0;
Estado.IniciarTabla(sTableName);
// Se revisa si es una tabla del nucleo y se actualiza
// Revisar esto
dtNucleo = null;
if (bUpdateCurrentRows)
{
// Se filtra la información del indice de llave primario, para la busqueda de
// de las filas actuales
m_dvPK.RowFilter = "TABLE_NAME = '" + sTableName + "'";
}
else
{
// Si es una tabla del nucleo si eliminan las filas actuales
if (dtNucleo != null)
{
dtNucleo.Rows.Clear();
}
}
// Se obtiene el objeto ResultSet por medio del cual se hará la actualización
// especificando el indice de llave primaria de la tabla
SqlCeCommand cmd = new SqlCeCommand();
cmd.Connection = (SqlCeConnection)this.Connection;
cmd.CommandType = CommandType.TableDirect;
cmd.CommandText = sTableName;
if (bUpdateCurrentRows)
{
cmd.IndexName = System.Convert.ToString(m_dvPK[0]["CONSTRAINT_NAME"]);
rs = cmd.ExecuteResultSet(ResultSetOptions.Updatable | ResultSetOptions.Sensitive | ResultSetOptions.Scrollable);
}
else
{
rs = cmd.ExecuteResultSet(ResultSetOptions.Updatable);
}
// se obtienen los nombres de los campos
sLine = sr.ReadLine();
sFields = sLine.Split('|');
// se obtienen los tipos de datos de las columnas
sLine = sr.ReadLine();
sFieldsTypes = sLine.Split('|');
// Se procesa cada fila que venga serializada en la cadena
sLine = sr.ReadLine();
bool bInsertRecord = false;
while ((sLine != null) & (!Estado.Cancelado))
{
if (sLine.Trim() == string.Empty)
{
break;
}
// Se obtienen los valores que vienen en el registro
sValues = sLine.Split('|');
// Se obtienen los valores de llave primaria del registro
// Se crea la matriz de objetos para guardar los valores de la llave primaria de cada registro
bInsertRecord = true;
if (bUpdateCurrentRows)
{
// Se obtiene la llave primaria del registro
object[] RecordKey = new object[m_dvPK.Count];
for (I = 0; I < m_dvPK.Count; I++)
{
for (J = 0; J < sFields.GetUpperBound(0); J++)
{
if (System.Convert.ToString(m_dvPK[I]["COLUMN_NAME"]).ToUpper() == sFields[J])
{
RecordKey[I] = GetColumnValue(sFieldsTypes[J], sValues[J]);
}
}
}
// se busca el registro actual y luego se actualizan los datos
// si no se encuentra se inserta un nuevo registro
if (rs.Seek(DbSeekOptions.FirstEqual, RecordKey))
{
bInsertRecord = false;
// Se obtiene la fila a modificar
rs.Read();
if (dtNucleo != null)
{
row = dtNucleo.Rows.Find(RecordKey);
}
// Se actualizan los valores de cada columna en el registro en la base de datos y si
// se esta procesando una tabla del nucleo tambien se actualiza en memoria
if (dtNucleo != null && row != null)
{
for (I = 0; I < sFields.GetUpperBound(0); I++)
{
try
{
nIndex = rs.GetOrdinal(sFields[I]);
FieldValue = GetColumnValue(rs.GetFieldType(nIndex).ToString(), sValues[I]);
rs.SetValue(nIndex, FieldValue);
nIndex = row.Table.Columns.IndexOf(sFields[I]);
if (nIndex >= 0)
{
row[nIndex] = FieldValue;
}
}
catch (Exception ex)
{
throw new InvalidOperationException("Field: " + sFields[I] + "\r\n" + "Type: " + rs.GetFieldType(nIndex).ToString() + "\r\n" + "Value: " + sValues[I] + "\r\n" + ex.Message);
}
}
}
else
{
for (I = 0; I < sFields.GetUpperBound(0); I++)
{
try
{
nIndex = rs.GetOrdinal(sFields[I]);
FieldValue = GetColumnValue(rs.GetFieldType(nIndex).ToString(), sValues[I]);
rs.SetValue(nIndex, FieldValue);
}
catch (Exception ex)
{
throw new InvalidOperationException("Field: " + sFields[I] + "\r\n" + "Type: " + rs.GetFieldType(nIndex).ToString() + "\r\n" + "Value: " + sValues[I] + "\r\n" + ex.Message);
}
}
}
rs.Update();
}
}
if (bInsertRecord)
{
// Se crea el nuevo registro
record = rs.CreateRecord();
if (dtNucleo != null)
{
row = dtNucleo.NewRow();
}
else
{
row = null;
}
// Se actualizan los valores de cada columna en el registro
if (dtNucleo != null && row != null)
{
for (I = 0; I < sFields.GetUpperBound(0); I++)
{
try
{
nIndex = rs.GetOrdinal(sFields[I]);
FieldValue = GetColumnValue(rs.GetFieldType(nIndex).ToString(), sValues[I]);
record.SetValue(nIndex, FieldValue);
nIndex = row.Table.Columns.IndexOf(sFields[I]);
if (nIndex >= 0)
{
row[nIndex] = FieldValue;
}
}
catch (Exception ex)
{
throw new InvalidOperationException("Field: " + sFields[I] + "\r\n" + "Type: " + rs.GetFieldType(nIndex).ToString() + "\r\n" + "Value: " + sValues[I] + "\r\n" + ex.Message);
}
}
}
else
{
for (I = 0; I < sFields.GetUpperBound(0); I++)
{
try
{
nIndex = rs.GetOrdinal(sFields[I]);
FieldValue = GetColumnValue(rs.GetFieldType(nIndex).ToString(), sValues[I]);
record.SetValue(nIndex, FieldValue);
}
catch (Exception ex)
{
throw new InvalidOperationException("Field: " + sFields[I] + "\r\n" + "Type: " + rs.GetFieldType(nIndex).ToString() + "\r\n" + "Value: " + sValues[I] + "\r\n" + ex.Message);
}
}
}
// Se almacena el nuevo registro
try
{
rs.Insert(record, DbInsertOptions.KeepCurrentPosition);
if (dtNucleo != null && row != null)
{
dtNucleo.Rows.Add(row);
row.AcceptChanges();
}
}
catch (Exception ex)
{
object[] values = new object[rs.FieldCount + 1];
record.GetValues(values);
throw ex;
}
}
// Se registra el avance de la tabla
nRows += 1;
nTotalRows += 1;
if ((nRows % 100) == 0 || nRows == nRowCount)
{
Estado.ProgresoTabla = System.Convert.ToInt32((nRows * 100 / nRowCount));
Estado.ProgresoTotal = System.Convert.ToInt32(nTotalRows * 100 / nTotalRowCount);
}
// Se se lee el siguiente registro
sLine = sr.ReadLine();
}
rs.Close();
}
}
}
catch (Exception ex)
{
throw ex;
}
finally
{
if (rs != null)
{
if (!rs.IsClosed)
{
rs.Close();
rs = null;
}
}
this.CloseConnection();
sr.Close();
}
return(true);
}