public bool Delete(contactclass c)
{
bool isSuccess = false;
SqlConnection connec = new SqlConnection(myconnstrng);
try
{
string sql = "DELETE FROM tbl_visitors WHERE ContactId=@ContactId";
SqlCommand cmd = new SqlCommand(sql, connec);
cmd.Parameters.AddWithValue("@ContactId", c.ContactId);
connec.Open();
int check = cmd.ExecuteNonQuery();
if (check > 0)
{
isSuccess = true;
}
else
{
isSuccess = false;
}
}
catch (Exception ex)
{
}
finally
{
connec.Close();
}
return(isSuccess);
}
public bool Update(contactclass u)
{
bool isFine = false;
//Creating database connextion
SqlConnection connec = new SqlConnection(myconnstrng);
try
{
//sql query
string sql = "UPDATE tbl_visitors SET FirstName=@FirstName, LastName=@LastName, ContactNo=@ContactNo, Email=@Email, Gender=@Gender ,Address=@Address WHERE ContactId=@ContactId ";
//creating cmd using sql and connec
SqlCommand cmd = new SqlCommand(sql, connec);
//creating parameters
cmd.Parameters.AddWithValue("@FirstName", u.FirstName);
cmd.Parameters.AddWithValue("@LastName", u.LastName);
cmd.Parameters.AddWithValue("@ContactNo", u.ContactNo);
cmd.Parameters.AddWithValue("@Email", u.Email);
cmd.Parameters.AddWithValue("@Gender", u.Gender);
cmd.Parameters.AddWithValue("@Address", u.Address);
cmd.Parameters.AddWithValue("@ContactId", u.ContactId);
//opening Connection
connec.Open();
int rows = cmd.ExecuteNonQuery();
if (rows > 0)
{
isFine = true;
}
else
{
isFine = false;
}
}
catch (Exception ex)
{
}
finally
{
connec.Close();
}
return(isFine);
}
//Inserting data into database
public bool Insert(contactclass c)
{
bool isSuccess = false;
//1.Connect Databse
SqlConnection conn = new SqlConnection(myconnstrng);
try
{
//2.Creating sql query to insert data
string sql = "INSERT INTO tbl_visitors (FirstName,LastName,ContactNo,Email,Gender,Address) VALUES(@FirstName,@LastName,@ContactNo,@Email,@Gender,@Address)";
//sql cmd using sql and conn
SqlCommand cmd = new SqlCommand(sql, conn);
//Create parameters to add data
cmd.Parameters.AddWithValue("@FirstName", c.FirstName);
cmd.Parameters.AddWithValue("@LastName", c.LastName);
cmd.Parameters.AddWithValue("@ContactNo", c.ContactNo);
cmd.Parameters.AddWithValue("@Email", c.Email);
cmd.Parameters.AddWithValue("@Gender", c.Gender);
cmd.Parameters.AddWithValue("@Address", c.Address);
//Connection open
conn.Open();
int rows = cmd.ExecuteNonQuery();
if (rows > 0)
{
isSuccess = true;
}
else
{
isSuccess = false;
}
}
catch (Exception ex)
{
}
finally
{
conn.Close();
}
return(isSuccess);
}
