//传入主界面参数的构造函数
public Library(IntroForm intro)
{
type = 1;//定义主界面层级为1
this.introForm = intro;
this.username = intro.username;
InitializeComponent();
}
//登录
private void buttonX1_Click(object sender, EventArgs e)
{
if (textBoxX1.Text == "" || textBoxX2.Text == "")
MessageBox.Show("用户名或密码不能为空!", "提示");
else
{
string strdb = "Provider=Microsoft.ACE.OLEDB.12.0;Data source=" + Application.StartupPath + "\\SampleData1.accdb";
OleDbConnection con = new OleDbConnection(strdb);
con.Open();
string strsql = "select * from users where username='******'and password='******'";
OleDbCommand cmd = new OleDbCommand(strsql, con);
OleDbDataReader rd = cmd.ExecuteReader();//？？？
if (!rd.HasRows)
{
MessageBox.Show("用户名或密码错误,请重新输入!", "提示");
return;
}
else
{
this.Hide();
//判断返回参数类型
if (type == 1)//传入函数来自主界面
{
this.introForm = new IntroForm(textBoxX1.Text);
this.introForm.ShowDialog();
}
else if (type == 2)//传入函数来自Library界面
{
this.userLibrary = new Library(textBoxX1.Text);
this.userLibrary.ShowDialog();
}
else if (type == 3)//传入函数来自ObjectDeatils界面
{
this.objectDetails.main.username = textBoxX1.Text;//传入用户名称
//this.objectDetails.ShowDialog();
}
else if (type == 4)//传入函数来自StudyBuilding界面
{
this.studyBuilding.main.username = textBoxX1.Text;
}
}
}
}
//返回键
private void lblReturn_Click(object sender, EventArgs e)
{
if (this.username == null)//用户未登陆
{
this.Hide();
IntroForm intro = new IntroForm();
intro.ShowDialog();
}
else
{
this.Hide();
IntroForm intro = new IntroForm(this.username);
intro.ShowDialog();
}
}
private void lbl_return_Click(object sender, EventArgs e)
{
//判断用户是否已登录
if (type == 0 && this.username != null)//用户在Library界面点开Login并登录
{
this.Hide();
introForm = new IntroForm(this.username);
introForm.ShowDialog();
}
else if (type == 1)//Library来自主界面
{
this.Hide();
introForm = new IntroForm(this.username);
introForm.ShowDialog();
}
else if (type == 2)//Library来自SearchInfo界面
{
this.Hide();
searchInfo = new SearchInfo(this.username, "图书馆");
searchInfo.ShowDialog();
}
}
public UserRegister(IntroForm form1)
{
InitializeComponent();
main = form1;
}