图书管理系统c#图书管理系统c#

using System; using System.Collections.Generic; using System.ComponentModel; using System.Data; using System.Drawing; using System.Text; using System.Windows.Forms; using System.Data.SqlClient; namespace WindowsApplication1 { public partial class 新用户注册 : Form { public 新用户注册() { InitializeComponent(); } private void textBox1_TextChanged(object sender, EventArgs e) { textBox1.Text = textBox1.Text; } private void textBox2_TextChanged(object sender, EventArgs e) { textBox2.Text = textBox2.Text; } SqlDataAdapter m_adapter; DataTable m_table1; private void button1_Click(object sender, EventArgs e) { if (textBox2.Text == "") { MessageBox.Show("密码不能为空！"); return; } if (textBox2.Text==textBox3.Text) { MessageBox.Show("新用户注册添加成功!"); string sql = "insert into table2(ID,密码) values ('" + textBox1.Text + "','" + textBox2.Text + "')"; SqlConnection conn = new SqlConnection("data source=127.0.0.1;persist security info=false;initial catalog=liuzy;integrated security=sspi"); conn.Open(); m_adapter = new SqlDataAdapter(sql, conn); m_table1 = new DataTable(); m_adapter.Fill(m_table1); conn.Close(); } else { MessageBox.Show("前后输入密码不一致!"); } } private void button2_Click(object sender, EventArgs e) { this.Close(); } private void textBox1_KeyDown(object sender, KeyEventArgs e) { if (e.KeyCode == Keys.Enter) this.textBox2.Focus(); } private void textBox3_TextChanged(object sender, EventArgs e) { } private void textBox2_KeyDown(object sender, KeyEventArgs e) { if (e.KeyCode == Keys.Enter) this.textBox3.Focus(); } private void textBox3_KeyDown(object sender, KeyEventArgs e) { if (e.KeyCode == Keys.Enter) this.button1_Click(null,null); } } }