public bool DeleteThisCandidate(ManageCandidate aManageCandidate)
{
aSqlConnection.Open();
string query = "DELETE FROM t_candidate WHERE candidate_name = '" + aManageCandidate.DeleteCandidate + "'";
SqlCommand aCommand = new SqlCommand(query, aSqlConnection);
int affectedRow = aCommand.ExecuteNonQuery();
if (affectedRow > 0)
{
return(true);
}
return(false);
}
public bool SaveNewCandidate(ManageCandidate aManageCandidate)
{
aSqlConnection.Open();
string query = " INSERT INTO t_candidate (candidate_name , candidate_password, candidate_symbol, number_of_vote) VALUES ('" +
aManageCandidate.CandidateName + "' , '" + aManageCandidate.CandidatePassword + "' ,'" + aManageCandidate.CandidateSymbol + "', '0') ";
SqlCommand aCommand = new SqlCommand(query, aSqlConnection);
int affectedRow = aCommand.ExecuteNonQuery();
aSqlConnection.Close();
if (affectedRow > 0)
{
return(true);
}
return(false);
}
public bool IsThisDataExist(ManageCandidate aManageCandidate)
{
aSqlConnection.Open();
string selectQuery = "SELECT * FROM t_candidate where candidate_name = '" + aManageCandidate.CandidateName + "'";
SqlCommand aSqlCommand = new SqlCommand(selectQuery, aSqlConnection);
SqlDataReader aReader = aSqlCommand.ExecuteReader();
while (aReader.Read())
{
aSqlConnection.Close();
return(true);
}
aSqlConnection.Close();
return(false);
}
public List <DAL.DAO.ManageCandidate> FillComboBox()
{
aSqlConnection.Open();
string query = "SELECT * FROM t_candidate";
SqlCommand command = new SqlCommand(query, aSqlConnection);
SqlDataReader aReader = command.ExecuteReader();
List <ManageCandidate> candidatesList = new List <ManageCandidate>();
while (aReader.Read())
{
ManageCandidate aCandidate = new ManageCandidate();
aCandidate.CandidateSymbol = aReader["candidate_symbol"].ToString();
candidatesList.Add(aCandidate);
}
aSqlConnection.Close();
return(candidatesList);
}
public List <ManageCandidate> LoadGridView()
{
aSqlConnection.Open();
string query = "SELECT * FROM t_candidate";
SqlCommand command = new SqlCommand(query, aSqlConnection);
SqlDataReader aReader = command.ExecuteReader();
List <ManageCandidate> candidatesList = new List <ManageCandidate>();
while (aReader.Read())
{
ManageCandidate aCandidate = new ManageCandidate();
aCandidate.CandidateName = aReader["candidate_name"].ToString();
aCandidate.CandidateSymbol = aReader["candidate_symbol"].ToString();
aCandidate.CandidatePassword = aReader["candidate_password"].ToString();
aCandidate.NumberOfVote = (int)aReader["number_of_vote"];
candidatesList.Add(aCandidate);
}
aSqlConnection.Close();
return(candidatesList);
}