VS2012——實現一個登入的小介面
阿新 • • 發佈:2018-12-26
這個是第一個介面的程式碼:
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
using System.Data.SqlClient;
namespace 登入x
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}
private void userInfoBindingNavigatorSaveItem_Click(object sender, EventArgs e)
{
this.Validate();
this.userInfoBindingSource.EndEdit();
this.tableAdapterManager.UpdateAll(this.studentRecordDataSet);
}
private void Form1_Load(object sender, EventArgs e)
{
// TODO: 這行程式碼將資料載入到表“studentRecordDataSet1.UserInfo”中。您可以根據需要移動或刪除它。
this.userInfoTableAdapter1.Fill(this.studentRecordDataSet1.UserInfo);
// TODO: 這行程式碼將資料載入到表“studentRecordDataSet.UserInfo”中。您可以根據需要移動或刪除它。
this .userInfoTableAdapter.Fill(this.studentRecordDataSet.UserInfo);
}
private void passwordLabel_Click(object sender, EventArgs e)
{
}
private void button1_Click(object sender, EventArgs e)
{
string connString = @"Data Source=.;Initial Catalog=studentrecord;Integrated Security=True";
SqlConnection conn = new SqlConnection(connString);
string sql = "select count(*) from UserInfo where username='" + userNameComboBox.Text + "'and password='" + passwordTextBox.Text + "'";
conn.Open();
SqlCommand comm = new SqlCommand(sql, conn);
int num = (int)comm.ExecuteScalar();
if (num > 0)
{
Form2 frm2 = new Form2();
frm2.Show();
}
else
{
MessageBox.Show("對不起,使用者名稱和密碼並不匹配!", "登陸失敗");
}
conn.Close();
}
private void userNameComboBox_SelectedIndexChanged(object sender, EventArgs e)
{
}
private void passwordTextBox_TextChanged(object sender, EventArgs e)
{
}
}
}
這個是第二個介面的程式碼:
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
namespace 登入x
{
public partial class Form2 : Form
{
public Form2()
{
InitializeComponent();
}
private void label1_Click(object sender, EventArgs e)
{
}
}
}
執行結果如圖:
很簡陋的一個登入介面,後期還有升級版的哦!