namespace _6.简单记事本程序
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}

private void Form1_Load(object sender, EventArgs e) { //一开始将不需要显示的控件进行隐藏 txtWord.WordWrap = false; btnWrap.Visible = false; btnSave.Visible = false; txtWord.Visible = false; } private void btnLoging_Click(object sender, EventArgs e) { //单击登录按钮时判断用户密码是否正确 //获取输入的用户及密码 string name = txtName.Text.Trim(); string pwd = txtPwd.Text; //判断用户密码是否正确 if(name=="admin" && pwd == "admin") { MessageBox.Show("登录成功"); //之前隐藏控件要显示出来 btnWrap.Visible = true; btnSave.Visible = true; txtWord.Visible = true; //现显示的控件要进行隐藏 labName.Visible = false; labPwd.Visible = false; txtName.Visible = false; txtPwd.Visible = false; btnLoging.Visible = false; btnReset.Visible = false; } else { //登录失败时弹出一个提示框 MessageBox.Show("用户或密码错误，请重新输入"); //清除用户框和密码框输入的字符 txtName.Clear(); txtPwd.Clear(); //让用户框获得焦点，光标停留在用户输入框 txtName.Focus(); } } private void btnWrap_Click(object sender, EventArgs e) { //程序刚开始初始化时已将textWord设为不自动换行 //判断btnWrap的文本来决定是否自动换行 if (btnWrap.Text == "自动换行") { txtWord.WordWrap = true; btnWrap.Text = "取消自动换行"; } else { txtWord.WordWrap = false; btnWrap.Text = "自动换行"; } } private void btnSave_Click(object sender, EventArgs e) { //保存，将文件保存到指定路径 using (FileStream fsWrite = new FileStream(@"C:\Users\Administrator.USER-20180925HC\Desktop\1.txt", FileMode.OpenOrCreate, FileAccess.Write)) { //先拿到用户输入的内容 string str = txtWord.Text.Trim(); //转成字符串数组 byte[] buffer = System.Text.Encoding.Default.GetBytes(str); //调用写的对象 fsWrite.Write(buffer,0, buffer.Length); } MessageBox.Show("保存成功"); }}

}