public bool update(ContactClass c)
{
bool isSuccess = false;
int numRows = 0;
conn = new NpgsqlConnection(myconnstrng);
try
{
sql = "Update ContactsInfo SET FirstName=@FirstName, LastName=@LastName, ContactNo=@ContactNo, Address=@Address, Gender=@Gender WHERE ContactID=@ContactID";
cmd = new NpgsqlCommand(sql, conn);
cmd.Parameters.AddWithValue("@FirstName", c.FirstName);
cmd.Parameters.AddWithValue("@LastName", c.LastName);
cmd.Parameters.AddWithValue("@ContactNo", c.ContactNo);
cmd.Parameters.AddWithValue("@Address", c.Address);
cmd.Parameters.AddWithValue("@Gender", c.Gender);
cmd.Parameters.AddWithValue("@ContactID", c.ContactID);
conn.Open();
numRows = cmd.ExecuteNonQuery();
if (numRows > 0)
{
isSuccess = true;
}
else
{
isSuccess = false;
}
}
catch (Exception ex)
{
MessageBox.Show(ex.ToString());
}
finally
{
conn.Close();
}
return(isSuccess);
}
public bool Insert(ContactClass c)
{
bool isSuccess = false;
int numRows = 0;
conn = new NpgsqlConnection(myconnstrng);
try
{
sql = "INSERT INTO ContactsInfo (FirstName, LastName, ContactNo, Address, Gender) VALUES (@FirstName, @LastName, @ContactNo, @Address, @Gender)";
//SqlCommand cmd = new SqlCommand(sql, conn);
cmd = new NpgsqlCommand(sql, conn);
cmd.Parameters.AddWithValue("@FirstName", c.FirstName);
cmd.Parameters.AddWithValue("@LastName", c.LastName);
cmd.Parameters.AddWithValue("@ContactNo", c.ContactNo);
cmd.Parameters.AddWithValue("@Address", c.Address);
cmd.Parameters.AddWithValue("@Gender", c.Gender);
conn.Open();
numRows = cmd.ExecuteNonQuery();
//int rows = cmd.ExecuteNonQuery();
if (numRows > 0)
{
isSuccess = true;
}
else
{
isSuccess = false;
}
}
catch (Exception ex)
{
MessageBox.Show(ex.ToString());
}
finally
{
conn.Close();
}
return(isSuccess);
}
//inserting data into db
public bool Insert(ContactClass model)
{
bool isSuccess = false;
//step 1 connect DB
SqlConnection con = new SqlConnection(myconnectionstring);
try
{ //Create SQL Query to insert DATA
string sql = "INSERT INTO tblContact (FirstName, LastName, Mobile, Email, Gender, Address) " +
"VALUES (@FirstName, @LastName, @Mobile, @Email, @Gender, @Address)";
//Creat Sql Command using cmd and sql
SqlCommand cmd = new SqlCommand(sql, con);
//Create parameter to add Data
cmd.Parameters.AddWithValue("@FirstName", model.FirstName);
cmd.Parameters.AddWithValue("@LastName", model.LastName);
cmd.Parameters.AddWithValue("@Mobile", model.Mobile);
cmd.Parameters.AddWithValue("@Email", model.Email);
cmd.Parameters.AddWithValue("@Gender", model.Gender);
cmd.Parameters.AddWithValue("@Address", model.Address);
// open Connection
con.Open();
int rows = cmd.ExecuteNonQuery();
if (rows > 0)
{
isSuccess = true;
}
else
{
isSuccess = false;
}
}
catch (Exception ex)
{
}
finally
{
con.Close();
}
return(isSuccess);
}
// method to update DATA
public bool Update(ContactClass model)
{
bool isSccess = false;
SqlConnection con = new SqlConnection(myconnectionstring);
try
{
// SQL Qery to update data in DB
string sql = "UPDATE tblContact SET FirstName=@FirstName, LastName=@LastName, Mobile=@Mobile, " +
"Email=@Email, Gender=@Gender, Address=@Address WHERE ContactId=@ContactId";
//Crate Sql Command
SqlCommand cmd = new SqlCommand(sql, con);
//create parameter to update value
cmd.Parameters.AddWithValue("@FirstName", model.FirstName);
cmd.Parameters.AddWithValue("@LastName", model.LastName);
cmd.Parameters.AddWithValue("@Mobile", model.Mobile);
cmd.Parameters.AddWithValue("@Email", model.Email);
cmd.Parameters.AddWithValue("@Gender", model.Gender);
cmd.Parameters.AddWithValue("@Address", model.Address);
cmd.Parameters.AddWithValue("@ContactId", model.ContactId);
//open db conncetion
con.Open();
int rows = cmd.ExecuteNonQuery();
if (rows > 0)
{
isSccess = true;
}
else
{
isSccess = false;
}
}
catch (Exception ex)
{
}
finally
{
con.Close();
}
return(isSccess);
}
//method to delete data frm DB
public bool Delete(ContactClass model)
{
//create a default retun value and set its value to false
bool isSuccess = false;
//Create SQL connection
SqlConnection con = new SqlConnection(myconnectionstring);
try
{
//Sql to Delte DATA from DB
string sql = "DELETE FROM tblContact WHERE ContactId = @ContactId";
//createSql command
SqlCommand cmd = new SqlCommand(sql, con);
cmd.Parameters.AddWithValue("@ContactId", model.ContactId);
con.Open();
int rows = cmd.ExecuteNonQuery();
if (rows > 0)
{
isSuccess = true;
}
else
{
isSuccess = false;
}
}
catch (Exception ex)
{
}
finally
{
con.Close();
}
return(isSuccess);
}
