Hệ thống quản lý phòng tập trong C#

NewMember.cs
GymManagementSystem /
project /

1 using System;
2 using System.Collections.Generic;
3 using System.ComponentModel;
4 using System.Data;
5 using System.Drawing;
6 using System.Linq;
7 using System.Text;
8 using System.Windows.Forms;
9 using System.Data.SqlClient;
10
11 namespace GymManagementSystem
12 {
13     public partial class NewMember : Form
14     {
15         public NewMember()
16         {
17             InitializeComponent();
18         }
19
20         private void label6_Click(object sender, EventArgs e)
21         {
22
23         }
24
25         private void button1_Click(object sender, EventArgs e)
26         {
27             SqlConnection con = new SqlConnection(@"Data Source=.\SQLEXPRESS;AttachDbFilename=F:\Sem.4\C# Projects\GymManagementSystem in C#\GymManagementSystem\Gym.mdf;Integrated Security=True;User Instance=True");
28             con.Open();
29             string gender = string.Empty;
30             if (radioButton1.Checked)
31             {
32                 gender = "Male";
33             }
34             else if (radioButton2.Checked)
35             {
36                 gender = "Female";
37             }
38             try
39             {
40                 string str = " INSERT INTO members(f_name,l_name,gender,dob,mobile,email,jod,time,address,mem_time) VALUES('" + textBox1.Text + "','" + textBox2.Text + "','" + gender + "','" + textBox3.Text + "','" + textBox4.Text + "','" + textBox5.Text + "','" + textBox6.Text + "','" + comboBox1.Text + "','" + textBox7.Text + "','" + comboBox2.Text + "'); ";
41
42                 SqlCommand cmd = new SqlCommand(str, con);
43                 cmd.ExecuteNonQuery();
44
45                 string str1 = "select max(m_id) from members ;";
46
47                 SqlCommand cmd1 = new SqlCommand(str1, con);
48                 SqlDataReader dr = cmd1.ExecuteReader();
49                 if (dr.Read())
50                 {
51                     MessageBox.Show("" + textBox1.Text + "'s Details is Inserted Successfully.. " + textBox1.Text + "'s Id is " + dr.GetInt32(0) + ".", "Important Message");
52                     this.Hide();
53
54                 }
55                 this.Close();
56             }
57             catch (SqlException excep)
58             {
59                 MessageBox.Show(excep.Message);
60             }
61             con.Close();
62         }
63     }
64 }