本文实例为大家分享了VS2012实现登录界面的具体代码,供大家参考,具体内容如下
这个是第一个界面的代码:
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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 登录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: 这行代码将数据加载到表“studentRecordDataSet1.UserInfo”中。您可以根据需要移动或删除它。
this .userInfoTableAdapter1.Fill( this .studentRecordDataSet1.UserInfo);
// TODO: 这行代码将数据加载到表“studentRecordDataSet.UserInfo”中。您可以根据需要移动或删除它。
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( "对不起,用户名和密码并不匹配!" , "登陆失败" );
}
conn.Close();
}
private void userNameComboBox_SelectedIndexChanged( object sender, EventArgs e)
{
}
private void passwordTextBox_TextChanged( object sender, EventArgs e)
{
}
}
}
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这个是第二个界面的代码:
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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 登录x
{
public partial class Form2 : Form
{
public Form2()
{
InitializeComponent();
}
private void label1_Click( object sender, EventArgs e)
{
}
}
}
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运行结果如图:
以上就是本文的全部内容,希望对大家的学习有所帮助,也希望大家多多支持服务器之家。
原文链接:https://blog.csdn.net/Wu_zx520/article/details/80566522