xk/frmLogin.cs

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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.Windows.Forms;
using System.Drawing.Drawing2D;

namespace xk
{
    public partial class frmLogin : Form
    {

        public frmLogin()
        {
            InitializeComponent();
        }

        private void frmLogin_Load(object sender, EventArgs e)
        {
            
            this.txtid.Region = new Region(GetRoundRectPath(new RectangleF(0, 0, this.txtid.Width, this.txtid.Height), 10f));
            this.txtpwd.Region = new Region(GetRoundRectPath(new RectangleF(0, 0, this.txtpwd.Width, this.txtpwd.Height), 10f));
            this.label3.Region = new Region(GetRoundRectPath(new RectangleF(0, 0, this.label3.Width, this.label3.Height), 10f));
            txtid.Focus();
        }

        private void btnlogin_Click(object sender, EventArgs e)
        {
            skinLabel1.Text = "";
            if (skinTextBox1.Text == skinCode1.CodeStr)
            {
                if (checkBox1.Checked)
                {
                    CPublic.CheckUsers(txtid.Text, txtpwd.Text);

                }
                else
                    CPublic.CheckStudent(txtid.Text, txtpwd.Text);

                if (CPublic.LoginInfo == null)
                {
                    MessageBox.Show("账号或密码错误", "登陆错误", MessageBoxButtons.OK, MessageBoxIcon.Information);

                }
                else Close();
            }
            else skinLabel1.Text = "验证码不正确！";
        }

        public GraphicsPath GetRoundRectPath(RectangleF rect, float radius)
        {
            return GetRoundRectPath(rect.X, rect.Y, rect.Width, rect.Height, radius);
        }

        public GraphicsPath GetRoundRectPath(float X, float Y, float width, float height, float radius)
        {
            GraphicsPath path = new GraphicsPath();