www.pudn.com > MainPrj_CarShop.rar > frmLogin.cs
using System;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;
using System.Runtime.InteropServices;
using System.Data;
using System.Data.SqlClient;
namespace MainPrj_CarShop
{
///
/// frmLogin 的摘要说明。
///
public class frmLogin : System.Windows.Forms.Form
{
private System.Windows.Forms.Label lbluer;
private System.Windows.Forms.ToolTip toolTip1;
private System.Windows.Forms.Label label1;
private System.Windows.Forms.Button btnConfirm;
private System.Windows.Forms.Button btnCancel;
private System.Windows.Forms.PictureBox pictureBox1;
private System.ComponentModel.IContainer components;
private System.Data.SqlClient.SqlConnection conLogin;
private System.Windows.Forms.ComboBox cboName;
private System.Windows.Forms.TextBox txtPwd;
private System.Windows.Forms.ContextMenu contextMenu1;
private System.Data.SqlClient.SqlCommand cmdLogin;
public frmLogin()
{
//
// Windows 窗体设计器支持所必需的
//
InitializeComponent();
//
// TODO: 在 InitializeComponent 调用后添加任何构造函数代码
//
}
///
/// 清理所有正在使用的资源。
///
protected override void Dispose( bool disposing )
{
try
{
if( disposing )
{
if(components != null)
{
components.Dispose();
}
}
base.Dispose( disposing );
}
catch(Exception ex)
{
MessageBox.Show("系统发生一个异常的错误！请与管理员联系。\n"+ex.Message,"系统错误",MessageBoxButtons.OK,MessageBoxIcon.Error);
}
}
#region Windows 窗体设计器生成的代码
///
/// 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。
///
private void InitializeComponent()
{
this.components = new System.ComponentModel.Container();
this.lbluer = new System.Windows.Forms.Label();
this.cboName = new System.Windows.Forms.ComboBox();
this.toolTip1 = new System.Windows.Forms.ToolTip(this.components);
this.label1 = new System.Windows.Forms.Label();
this.txtPwd = new System.Windows.Forms.TextBox();
this.btnConfirm = new System.Windows.Forms.Button();
this.btnCancel = new System.Windows.Forms.Button();
this.pictureBox1 = new System.Windows.Forms.PictureBox();
this.contextMenu1 = new System.Windows.Forms.ContextMenu();
this.SuspendLayout();
//
// lbluer
//
this.lbluer.AutoSize = true;
this.lbluer.Location = new System.Drawing.Point(88, 91);
this.lbluer.Name = "lbluer";
this.lbluer.Size = new System.Drawing.Size(54, 17);
this.lbluer.TabIndex = 0;
this.lbluer.Text = "用户名称";
//
// cboName
//
this.cboName.DropDownStyle = System.Windows.Forms.ComboBoxStyle.DropDownList;
this.cboName.Location = new System.Drawing.Point(144, 88);
this.cboName.Name = "cboName";
this.cboName.Size = new System.Drawing.Size(128, 20);
this.cboName.TabIndex = 1;
//
// label1
//
this.label1.AutoSize = true;
this.label1.Location = new System.Drawing.Point(88, 124);
this.label1.Name = "label1";
this.label1.Size = new System.Drawing.Size(54, 17);
this.label1.TabIndex = 0;
this.label1.Text = "用户密码";
//
// txtPwd
//
this.txtPwd.Location = new System.Drawing.Point(144, 120);
this.txtPwd.Name = "txtPwd";
this.txtPwd.PasswordChar = '*';
this.txtPwd.Size = new System.Drawing.Size(128, 21);
this.txtPwd.TabIndex = 3;
this.txtPwd.Text = "123456";
//
// btnConfirm
//
this.btnConfirm.DialogResult = System.Windows.Forms.DialogResult.OK;
this.btnConfirm.Location = new System.Drawing.Point(92, 152);
this.btnConfirm.Name = "btnConfirm";
this.btnConfirm.Size = new System.Drawing.Size(64, 24);
this.btnConfirm.TabIndex = 4;
this.btnConfirm.Text = "确定(&C)";
this.btnConfirm.Click += new System.EventHandler(this.btnConfirm_Click);
//
// btnCancel
//
this.btnCancel.DialogResult = System.Windows.Forms.DialogResult.Cancel;
this.btnCancel.Location = new System.Drawing.Point(204, 152);
this.btnCancel.Name = "btnCancel";
this.btnCancel.Size = new System.Drawing.Size(64, 24);
this.btnCancel.TabIndex = 4;
this.btnCancel.Text = "取消(&E)";
this.btnCancel.Click += new System.EventHandler(this.btnCancel_Click);
//
// pictureBox1
//
this.pictureBox1.BackColor = System.Drawing.Color.LightGoldenrodYellow;
this.pictureBox1.Dock = System.Windows.Forms.DockStyle.Top;
this.pictureBox1.Location = new System.Drawing.Point(0, 0);
this.pictureBox1.Name = "pictureBox1";
this.pictureBox1.Size = new System.Drawing.Size(368, 80);
this.pictureBox1.TabIndex = 5;
this.pictureBox1.TabStop = false;
//
// frmLogin
//
this.AcceptButton = this.btnConfirm;
this.AutoScaleBaseSize = new System.Drawing.Size(6, 14);
this.CancelButton = this.btnCancel;
this.ClientSize = new System.Drawing.Size(368, 206);
this.Controls.Add(this.pictureBox1);
this.Controls.Add(this.btnConfirm);
this.Controls.Add(this.txtPwd);
this.Controls.Add(this.cboName);
this.Controls.Add(this.lbluer);
this.Controls.Add(this.label1);
this.Controls.Add(this.btnCancel);
this.MaximizeBox = false;
this.MinimizeBox = false;
this.Name = "frmLogin";
this.StartPosition = System.Windows.Forms.FormStartPosition.CenterScreen;
this.Text = "登 陆";
this.Closing += new System.ComponentModel.CancelEventHandler(this.frmLogin_Closing);
this.Load += new System.EventHandler(this.frmLogin_Load);
this.ResumeLayout(false);
}
#endregion
private void frmLogin_Closing(object sender, System.ComponentModel.CancelEventArgs e)
{
}
private ArrayList li=new ArrayList();
private void frmLogin_Load(object sender, System.EventArgs e)
{
try
{
this.conLogin=new System.Data.SqlClient.SqlConnection("server=.;uid=sa;pwd=;database=dbCarsys");
this.conLogin.Open();
this.cmdLogin=new System.Data.SqlClient.SqlCommand("select uName,uCode from tblUser",this.conLogin);
SqlDataReader dr=this.cmdLogin.ExecuteReader();
while(dr.Read())
{
li.Add( new User(dr.GetString(1),dr.GetString(0)));
}
dr.Close();
this.cboName.DataSource=li;
this.cboName.DisplayMember="Name";
this.cboName.ValueMember="Code";
}
catch(SqlException ex)
{
MessageBox.Show("系统发生一个异常的错误！请与管理员联系。\n"+ex.Message,"系统错误",MessageBoxButtons.OK,MessageBoxIcon.Error);;
}
catch(Exception ex)
{
MessageBox.Show("数据库操作发生一个异常的错误！请与管理员联系。\n"+ex.Message,"系统错误",MessageBoxButtons.OK,MessageBoxIcon.Error);
}
finally
{
this.conLogin.Close();
}
}
private void btnConfirm_Click(object sender, System.EventArgs e)
{
if(this.cboName.SelectedItem==null)
{
return;
}
else
{
try
{
this.conLogin=new System.Data.SqlClient.SqlConnection("server=.;uid=sa;pwd=;database=dbCarsys");
this.conLogin.Open();
string str="select uJob from tblUser where uCode='"+(string)this.cboName.SelectedValue+"' and uPwd='"+this.txtPwd.Text+"'";
this.cmdLogin=new System.Data.SqlClient.SqlCommand(str,this.conLogin);
string job=(string)this.cmdLogin.ExecuteScalar();
if(job==null)
{
MessageBox.Show("登陆失败！","错误",MessageBoxButtons.OK,MessageBoxIcon.Warning);
this.DialogResult=DialogResult.Cancel;
return;
}
// MdiFrm_Main main=new MdiFrm_Main(this);
MdiFrm_Main.islog=true;
MdiFrm_Main.UserID=(string)this.cboName.SelectedValue;
MdiFrm_Main.UserName=this.cboName.Text;
MdiFrm_Main.UserJob=job;
// main.Show();
this.Close();
this.DialogResult=DialogResult.OK;
}
catch(SqlException ex)
{
MessageBox.Show("数据库操作发生一个异常的错误！请与管理员联系。\n"+ex.Message,"系统错误",MessageBoxButtons.OK,MessageBoxIcon.Error);
}
catch(Exception ex)
{
MessageBox.Show("系统发生一个异常的错误！请与管理员联系。\n"+ex.Message,"系统错误",MessageBoxButtons.OK,MessageBoxIcon.Error);
}
finally
{
this.conLogin.Close();
isExit=false;
}
}
}
bool isExit=false;
private void btnCancel_Click(object sender, System.EventArgs e)
{
MdiFrm_Main.islog=false;
this.Close();
this.DialogResult=DialogResult.Cancel;
// isExit=true;
// this.Close();
//Application.Exit();
}
private class User
{
string code;
string name;
public User(string code,string name)
{
this.code=code;
this.name=name;
}
public string Code
{
get
{
return this.code;
}
}
public string Name
{
get
{
return this.name;
}
}
}
}
}