frmlogin.cs

北大青鸟内部资料

using System;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;
using System.Data;

namespace Example_1
{
	/// <summary>
	/// Summary description for Form1.
	/// </summary>
	public class frmLogin : System.Windows.Forms.Form
	{
		private System.Windows.Forms.Label lblPassword;
		private System.Windows.Forms.Label lblDebitCardNumber;
		private System.Windows.Forms.TextBox txtDebitCardNumber;
		private System.Windows.Forms.TextBox txtPassword;
		private System.Windows.Forms.Button btnLogin;
		/// <summary>
		/// Required designer variable.
		/// </summary>
		private System.ComponentModel.Container components = null;

		public frmLogin()
		{
			//
			// Required for Windows Form Designer support
			//
			InitializeComponent();

			//
			// TODO: Add any constructor code after InitializeComponent call
			//
		}

		/// <summary>
		/// Clean up any resources being used.
		/// </summary>
		protected override void Dispose( bool disposing )
		{
			if( disposing )
			{
				if (components != null) 
				{
					components.Dispose();
				}
			}
			base.Dispose( disposing );
		}

		#region Windows Form Designer generated code
		/// <summary>
		/// Required method for Designer support - do not modify
		/// the contents of this method with the code editor.
		/// </summary>
		private void InitializeComponent()
		{
			this.lblPassword = new System.Windows.Forms.Label();
			this.lblDebitCardNumber = new System.Windows.Forms.Label();
			this.txtDebitCardNumber = new System.Windows.Forms.TextBox();
			this.txtPassword = new System.Windows.Forms.TextBox();
			this.btnLogin = new System.Windows.Forms.Button();
			this.SuspendLayout();
			// 
			// lblPassword
			// 
			this.lblPassword.Location = new System.Drawing.Point(32, 47);
			this.lblPassword.Name = "lblPassword";
			this.lblPassword.Size = new System.Drawing.Size(72, 23);
			this.lblPassword.TabIndex = 0;
			this.lblPassword.Text = "密码：";
			// 
			// lblDebitCardNumber
			// 
			this.lblDebitCardNumber.Location = new System.Drawing.Point(32, 15);
			this.lblDebitCardNumber.Name = "lblDebitCardNumber";
			this.lblDebitCardNumber.Size = new System.Drawing.Size(112, 23);
			this.lblDebitCardNumber.TabIndex = 0;
			this.lblDebitCardNumber.Text = "借记卡号：";
			// 
			// txtDebitCardNumber
			// 
			this.txtDebitCardNumber.Location = new System.Drawing.Point(152, 16);
			this.txtDebitCardNumber.MaxLength = 10;
			this.txtDebitCardNumber.Name = "txtDebitCardNumber";
			this.txtDebitCardNumber.Size = new System.Drawing.Size(109, 21);
			this.txtDebitCardNumber.TabIndex = 1;
			this.txtDebitCardNumber.Text = "";
			this.txtDebitCardNumber.KeyPress += new System.Windows.Forms.KeyPressEventHandler(this.txtDebitCardNumber_KeyPress);
			this.txtDebitCardNumber.Leave += new System.EventHandler(this.txtDebitCardNumber_Leave);
			// 
			// txtPassword
			// 
			this.txtPassword.Location = new System.Drawing.Point(152, 48);
			this.txtPassword.MaxLength = 6;
			this.txtPassword.Name = "txtPassword";
			this.txtPassword.PasswordChar = '*';
			this.txtPassword.Size = new System.Drawing.Size(109, 21);
			this.txtPassword.TabIndex = 2;
			this.txtPassword.Text = "";
			this.txtPassword.KeyPress += new System.Windows.Forms.KeyPressEventHandler(this.txtPassword_KeyPress);
			this.txtPassword.Leave += new System.EventHandler(this.txtPassword_Leave);
			// 
			// btnLogin
			// 
			this.btnLogin.Enabled = false;
			this.btnLogin.Location = new System.Drawing.Point(184, 80);
			this.btnLogin.Name = "btnLogin";
			this.btnLogin.TabIndex = 3;
			this.btnLogin.Text = "登录(&L)";
			this.btnLogin.Click += new System.EventHandler(this.btnLogin_Click);
			// 
			// frmLogin
			// 
			this.AutoScaleBaseSize = new System.Drawing.Size(5, 14);
			this.ClientSize = new System.Drawing.Size(288, 117);
			this.Controls.Add(this.txtPassword);
			this.Controls.Add(this.txtDebitCardNumber);
			this.Controls.Add(this.lblPassword);
			this.Controls.Add(this.lblDebitCardNumber);
			this.Controls.Add(this.btnLogin);
			this.Font = new System.Drawing.Font("Tahoma", 8.25F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((System.Byte)(0)));
			this.Name = "frmLogin";
			this.Text = " ATM 登录屏幕";
			this.ResumeLayout(false);

		}
		#endregion

		/// <summary>
		/// The main entry point for the application.
		/// </summary>
		[STAThread]
		static void Main() 
		{
			Application.Run(new frmLogin());
		}

		private void btnLogin_Click(object sender, System.EventArgs e)
		{
			frmAccountDetails objAccountDetails = new frmAccountDetails();
			this.Hide();
            objAccountDetails.Show();

		}
		private void txtDebitCardNumber_KeyPress(object sender, System.Windows.Forms.KeyPressEventArgs e)
		{
			//仅接受 0-9 和退格键 
			e.Handled = e.KeyChar < '0' || e.KeyChar > '9'; 
			if(e.KeyChar == (char)8)
				e.Handled=false;

		}

		private void txtDebitCardNumber_Leave(object sender, System.EventArgs e)
		{
			int count = this.txtDebitCardNumber.Text.Length;
			if(count < 10)
			{
				MessageBox.Show("请输入 10 位数字的借记卡号","借记卡");
				this.txtDebitCardNumber.Focus();
			}

		}

		private void txtPassword_KeyPress(object sender, System.Windows.Forms.KeyPressEventArgs e)
		{
			//仅接受 0-9 和退格键 
			e.Handled = e.KeyChar < '0' || e.KeyChar > '9'; 
			if(e.KeyChar == (char)8)
				e.Handled=false;
		}

		private void txtPassword_Leave(object sender, System.EventArgs e)
		{
			int count = this.txtPassword.Text.Length;
			if(count < 6)
			{
				MessageBox.Show("密码的长度应该为 6 个字符","密码");
				this.txtPassword.Focus();
			}
			else
			{
				this.btnLogin.Enabled=true;
				this.btnLogin.Focus();
			}
		}
	}
}