实例介绍
【实例简介】c# access研究生管理信息系统全代码
如果使用时提示【未在本地计算机上注册“Microsoft.ACE.OLEDB.12.0”提供程序。】
解决方法：
1.下载2007 Office system 驱动程序，注意是2007，亲测2010english版本出错，原因未进一步确认，组件下载地址
http://download.microsoft.com/download/7/0/3/703ffbcb-dc0c-4e19-b0da-1463960fdcdb/AccessDatabaseEngine.exe
2.安装AccessDatabaseEngine.exe
3. 右键项目>>生成>目标平台 选择x86
4.运行即可
【实例截图】
【核心代码】
using System;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;
using System.Data;
using System.Data.OleDb;
//Download by http://down.liehuo.net
namespace MasterMIS
{
/// <summary>
/// Form1 的摘要说明。
/// </summary>
public class Login : System.Windows.Forms.Form
{
private System.Windows.Forms.TextBox password;
private System.Windows.Forms.TextBox name;
private System.Windows.Forms.Label label3;
private System.Windows.Forms.Label label2;
private System.Windows.Forms.Label label1;
/// <summary>
/// 必需的设计器变量。
/// </summary>
private System.ComponentModel.Container components = null;
private OleDbConnection oleConnection1 = null;
private System.Windows.Forms.Button btClose;
private System.Windows.Forms.Button btAdd;
private OleDbCommand oleCommand1 = null;
public Login()
{
//
// Windows 窗体设计器支持所必需的
//
InitializeComponent();
oleConnection1 = new OleDbConnection(MasterMIS.database.dbConnection.connection);
oleCommand1 = new OleDbCommand();
oleCommand1.Connection = oleConnection1;
//
// TODO: 在 InitializeComponent 调用后添加任何构造函数代码
//
}
/// <summary>
/// 清理所有正在使用的资源。
/// </summary>
protected override void Dispose( bool disposing )
{
if( disposing )
{
if (components != null)
{
components.Dispose();
}
}
base.Dispose( disposing );
}
#region Windows 窗体设计器生成的代码
/// <summary>
/// 设计器支持所需的方法 - 不要使用代码编辑器修改
/// 此方法的内容。
/// </summary>
private void InitializeComponent()
{
this.btClose = new System.Windows.Forms.Button();
this.btAdd = new System.Windows.Forms.Button();
this.password = new System.Windows.Forms.TextBox();
this.name = new System.Windows.Forms.TextBox();
this.label3 = new System.Windows.Forms.Label();
this.label2 = new System.Windows.Forms.Label();
this.label1 = new System.Windows.Forms.Label();
this.SuspendLayout();
//
// btClose
//
this.btClose.FlatStyle = System.Windows.Forms.FlatStyle.Popup;
this.btClose.ForeColor = System.Drawing.Color.DarkSlateGray;
this.btClose.Location = new System.Drawing.Point(168, 160);
this.btClose.Name = "btClose";
this.btClose.Size = new System.Drawing.Size(75, 23);
this.btClose.TabIndex = 13;
this.btClose.Text = "取消";
this.btClose.Click = new System.EventHandler(this.btClose_Click);
//
// btAdd
//
this.btAdd.FlatStyle = System.Windows.Forms.FlatStyle.Popup;
this.btAdd.ForeColor = System.Drawing.Color.DarkSlateGray;
this.btAdd.Location = new System.Drawing.Point(48, 160);
this.btAdd.Name = "btAdd";
this.btAdd.Size = new System.Drawing.Size(75, 23);
this.btAdd.TabIndex = 12;
this.btAdd.Text = "确定";
this.btAdd.Click = new System.EventHandler(this.btAdd_Click);
//
// password
//
this.password.BorderStyle = System.Windows.Forms.BorderStyle.FixedSingle;
this.password.Location = new System.Drawing.Point(128, 120);
this.password.Name = "password";
this.password.PasswordChar = '*';
this.password.Size = new System.Drawing.Size(100, 21);
this.password.TabIndex = 11;
this.password.Text = "admin";
//
// name
//
this.name.BorderStyle = System.Windows.Forms.BorderStyle.FixedSingle;
this.name.Location = new System.Drawing.Point(128, 80);
this.name.Name = "name";
this.name.Size = new System.Drawing.Size(100, 21);
this.name.TabIndex = 10;
this.name.Text = "admin";
//
// label3
//
this.label3.Font = new System.Drawing.Font("宋体", 10.5F, System.Drawing.FontStyle.Bold, System.Drawing.GraphicsUnit.Point, ((byte)(134)));
this.label3.ForeColor = System.Drawing.Color.DarkSlateGray;
this.label3.Location = new System.Drawing.Point(64, 120);
this.label3.Name = "label3";
this.label3.Size = new System.Drawing.Size(56, 23);
this.label3.TabIndex = 9;
this.label3.Text = "密 码";
//
// label2
//
this.label2.Font = new System.Drawing.Font("宋体", 10.5F, System.Drawing.FontStyle.Bold, System.Drawing.GraphicsUnit.Point, ((byte)(134)));
this.label2.ForeColor = System.Drawing.Color.DarkSlateGray;
this.label2.Location = new System.Drawing.Point(64, 80);
this.label2.Name = "label2";
this.label2.Size = new System.Drawing.Size(56, 23);
this.label2.TabIndex = 8;
this.label2.Text = "用户名";
//
// label1
//
this.label1.Font = new System.Drawing.Font("Microsoft Sans Serif", 18F, System.Drawing.FontStyle.Bold, System.Drawing.GraphicsUnit.Point, ((byte)(134)));
this.label1.ForeColor = System.Drawing.Color.DarkSlateGray;
this.label1.Location = new System.Drawing.Point(32, 24);
this.label1.Name = "label1";
this.label1.Size = new System.Drawing.Size(232, 40);
this.label1.TabIndex = 7;
this.label1.Text = "研究生管理信息系统";
//
// Login
//
this.AutoScaleBaseSize = new System.Drawing.Size(6, 14);
this.BackColor = System.Drawing.Color.Lavender;
this.ClientSize = new System.Drawing.Size(339, 257);
this.Controls.Add(this.btClose);
this.Controls.Add(this.btAdd);
this.Controls.Add(this.password);
this.Controls.Add(this.name);
this.Controls.Add(this.label3);
this.Controls.Add(this.label2);
this.Controls.Add(this.label1);
this.MaximizeBox = false;
this.MinimizeBox = false;
this.Name = "Login";
this.StartPosition = System.Windows.Forms.FormStartPosition.CenterScreen;
this.Text = "登录";
this.Load = new System.EventHandler(this.Login_Load);
this.ResumeLayout(false);
this.PerformLayout();
}
#endregion
/// <summary>
/// 应用程序的主入口点。
/// </summary>
[STAThread]
static void Main()
{
Application.Run(new Login());
}
private void btAdd_Click(object sender, System.EventArgs e)
{
if(name.Text.Trim()==""||password.Text.Trim()=="")
MessageBox.Show("请输入用户名和密码","提示");
else
{
oleConnection1.Open();
OleDbCommand cmd=new OleDbCommand("",oleConnection1);
string sql="select RoleName from userinfo where UName='" name.Text.Trim() "' and PWD='" password.Text.Trim() "'";
cmd.CommandText=sql;
string rolename;
if (null!=cmd.ExecuteScalar())
{
rolename=cmd.ExecuteScalar().ToString();
//隐藏登录窗口
this.Visible=false;
//创建并打开主界面
Main main=new Main();
main.Tag=this.FindForm();
sql="select * from roles where RoleName='" rolename "'";
OleDbDataReader dr;
cmd.CommandText=sql;
dr=cmd.ExecuteReader();
dr.Read();
main.menuItem1.Visible=(bool)(dr.GetValue(1));
main.menuItem4.Visible=(bool)(dr.GetValue(1));
main.menuItem5.Visible=(bool)(dr.GetValue(2));
main.menuItem6.Visible=(bool)(dr.GetValue(2));
main.menuItem7.Visible=(bool)(dr.GetValue(3));
main.statusBarPanel2.Text=name.Text.Trim();
main.ShowDialog();
}
else
MessageBox.Show("用户名或密码错误","警告");
oleConnection1.Close();
}
}
private void btClose_Click(object sender, System.EventArgs e)
{
this.Close();
}
private void Login_Load(object sender, EventArgs e)
{
}
}
}
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