public int Delete(int contactId)
{
using (SqlConnection conn = DBContact.GetConnection())
{
SqlCommand cmd = new SqlCommand("DELETE FROM Contact WHERE ID = @ContactId", conn);
cmd.Parameters.Add(new SqlParameter("@ContactId", contactId));
conn.Open();
return(cmd.ExecuteNonQuery());
}
}
public DataTable GetAllTable()
{
using (SqlConnection conn = DBContact.GetConnection())
{
SqlCommand cmd = new SqlCommand("SELECT ID, [FullName], [Group], [Address], Phone FROM Contact", conn);
conn.Open();
SqlDataAdapter da = new SqlDataAdapter(cmd);
DataTable dt = new DataTable();
da.Fill(dt);
return(dt);
}
}
public DataTable GetTable(int id)
{
using (SqlConnection conn = DBContact.GetConnection())
{
SqlCommand cmd = new SqlCommand("SELECT ID, [FullName], [Group], [Address], Phone FROM Contact WHERE ID = @Id", conn);
cmd.Parameters.Add(new SqlParameter("@Id", id));
conn.Open();
SqlDataAdapter da = new SqlDataAdapter();
DataTable dt = new DataTable();
da.Fill(dt);
return(dt);
}
}
public int Insert(Contact objContact)
{
using (SqlConnection conn = DBContact.GetConnection())
{
SqlCommand cmd = new SqlCommand("INSERT Contact([FullName], [Group], [Address], Phone) VALUES (@Name,@Group,@Address,@Phone)", conn);
SqlParameter[] param =
{
new SqlParameter("@Name", objContact.FullName),
new SqlParameter("@Group", objContact.Group),
new SqlParameter("@Address", objContact.Address),
new SqlParameter("@Phone", objContact.Phone)
};
cmd.Parameters.AddRange(param);
conn.Open();
return(cmd.ExecuteNonQuery());
}
}
public int Update(Contact objContact)
{
using (SqlConnection conn = DBContact.GetConnection())
{
SqlCommand cmd = new SqlCommand("UPDATE Contact SET [FullName] = @Name, [Group] = @Group, [Address] = @Address, Phone = @Phone WHERE ID = @Id", conn);
SqlParameter[] param =
{
new SqlParameter("Id", objContact.Id),
new SqlParameter("@Name", objContact.FullName),
new SqlParameter("@Group", objContact.Group),
new SqlParameter("@Address", objContact.Address),
new SqlParameter("@Phone", objContact.Phone)
};
cmd.Parameters.AddRange(param);
conn.Open();
return(cmd.ExecuteNonQuery());
}
}
