registerform.cs

通讯录 采用xmlC#做的 很不错的啊

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
using System.IO;

namespace 通讯录
{
    public partial class RegisterForm : Form
    {
        private DataSet myDataSet;
        public RegisterForm(DataSet ds)
        {
            InitializeComponent();
            myDataSet = ds;
        }

        private void btnRegister_Click(object sender, EventArgs e)
        {
            string username = txtUsername.Text.Trim();
            string password = txtPassword.Text.Trim();
            string confirmPwd = txtConfirmPwd.Text.Trim();
            string pwdClew = txtPwdClew.Text.Trim();
            if (username == "")
            {
                lblValidate.Text = "用户名不能为空";
                lblValidate.Visible = true;
                return;
            }
            if (password == "")
            {
                lblValidate.Text = "密码不能为空";
                lblValidate.Visible = true;
                return;
            }
            if (pwdClew == "")
            {
                lblValidate.Text = "密码提示不能为空";
                lblValidate.Visible = true;
                return;
            }
            if (password != confirmPwd)
            {
                lblValidate.Text = "前后密码输入不一致";
                lblValidate.Visible = true;
                txtPassword.Text = "";
                txtPwdClew.Text = "";
                return;
            }
            foreach (DataRow row in myDataSet.Tables[0].Rows)
            {
                if (row["用户名"].ToString()==username)
                {
                    lblValidate.Text = "此用户名已被使用";
                    lblValidate.Visible = true;
                    txtUsername.Text = "";
                    txtPassword.Text = "";
                    txtPwdClew.Text = "";
                    return;
                }
            }
            int rowCount = myDataSet.Tables[0].Rows.Count + 1;
            DateTime now=DateTime.Now;
            string str = now.Year.ToString() + now.Month.ToString() + now.Day.ToString() + now.Hour.ToString() + now.Minute.ToString() + now.Second.ToString();
            string xFileName = "Data\\" + str + ".xml";
            string demo = "Data\\Demo.xml";
            File.Copy(demo,xFileName);
            DataRow newRow = myDataSet.Tables[0].NewRow();
            newRow["用户编号"] = rowCount.ToString();
            newRow["用户名"] = username;
            newRow["用户密码"] = password;
            newRow["密码提示"] = pwdClew;
            newRow["资料路径"] = xFileName;
            myDataSet.Tables[0].Rows.Add(newRow);
            myDataSet.WriteXml("Data\\User.xml");
            MessageBox.Show("注册成功！", "温馨提示", MessageBoxButtons.OK, MessageBoxIcon.Information);
            this.Close();
        }

        private void Cancel_Click(object sender, EventArgs e)
        {
            this.Close();
        }

        private void txtUsername_KeyDown(object sender, KeyEventArgs e)
        {
            lblValidate.Visible = false;
        }

        private void txtPassword_KeyDown(object sender, KeyEventArgs e)
        {
            lblValidate.Visible = false;
        }

        private void txtConfirmPwd_KeyDown(object sender, KeyEventArgs e)
        {
            lblValidate.Visible = false;
        }

        private void txtPwdClew_TextChanged(object sender, EventArgs e)
        {
            lblValidate.Visible = false;
        }

    }
}