Chào mọi người, mình có cú pháp ghi một List< sinhvien> ds vào trong file nhị phân vậy sai chỗ nào ạ. Khi chạy nó báo lỗi. Mong mọi người giúp đỡ ạ.
Ghi file nhị phân trong C#
{
partial class Form1
{
/// <summary>
/// Required designer variable.
/// </summary>
private System.ComponentModel.IContainer components = null;
/// <summary>
/// Clean up any resources being used.
/// </summary>
/// <param name="disposing">true if managed resources should be disposed; otherwise, false.</param>
protected override void Dispose(bool disposing)
{
if (disposing && (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.bt_them = new System.Windows.Forms.Button();
this.bt_xoa = new System.Windows.Forms.Button();
this.bt_capnhat = new System.Windows.Forms.Button();
this.lv_sinhvien = new System.Windows.Forms.ListView();
this.tb_mssv = new System.Windows.Forms.TextBox();
this.tb_hoten = new System.Windows.Forms.TextBox();
this.tb_diachi = new System.Windows.Forms.TextBox();
this.dt_ngaysinh = new System.Windows.Forms.DateTimePicker();
this.bg_gioitinh = new System.Windows.Forms.GroupBox();
this.rb_nu = new System.Windows.Forms.RadioButton();
this.rb_Nam = new System.Windows.Forms.RadioButton();
this.lb_hoten = new System.Windows.Forms.Label();
this.lb_maso = new System.Windows.Forms.Label();
this.lb_diachi = new System.Windows.Forms.Label();
this.lb_ngaysinh = new System.Windows.Forms.Label();
this.ch_mssv = ((System.Windows.Forms.ColumnHeader)(new System.Windows.Forms.ColumnHeader()));
this.ch_hoten = ((System.Windows.Forms.ColumnHeader)(new System.Windows.Forms.ColumnHeader()));
this.ch_gioitinh = ((System.Windows.Forms.ColumnHeader)(new System.Windows.Forms.ColumnHeader()));
this.ch_ngaysinh = ((System.Windows.Forms.ColumnHeader)(new System.Windows.Forms.ColumnHeader()));
this.ch_diachi = ((System.Windows.Forms.ColumnHeader)(new System.Windows.Forms.ColumnHeader()));
this.bt_ghi = new System.Windows.Forms.Button();
this.bg_gioitinh.SuspendLayout();
this.SuspendLayout();
//
// bt_them
//
this.bt_them.Location = new System.Drawing.Point(368, 42);
this.bt_them.Name = "bt_them";
this.bt_them.Size = new System.Drawing.Size(75, 23);
this.bt_them.TabIndex = 6;
this.bt_them.Text = "Thêm";
this.bt_them.UseVisualStyleBackColor = true;
this.bt_them.Click += new System.EventHandler(this.bt_them_Click);
//
// bt_xoa
//
this.bt_xoa.Location = new System.Drawing.Point(368, 83);
this.bt_xoa.Name = "bt_xoa";
this.bt_xoa.Size = new System.Drawing.Size(75, 23);
this.bt_xoa.TabIndex = 7;
this.bt_xoa.Text = "Xoá";
this.bt_xoa.UseVisualStyleBackColor = true;
this.bt_xoa.Click += new System.EventHandler(this.bt_xoa_Click);
//
// bt_capnhat
//
this.bt_capnhat.Location = new System.Drawing.Point(368, 121);
this.bt_capnhat.Name = "bt_capnhat";
this.bt_capnhat.Size = new System.Drawing.Size(75, 23);
this.bt_capnhat.TabIndex = 8;
this.bt_capnhat.Text = "Cập nhật";
this.bt_capnhat.UseVisualStyleBackColor = true;
this.bt_capnhat.Click += new System.EventHandler(this.bt_capnhat_Click);
//
// lv_sinhvien
//
this.lv_sinhvien.Columns.AddRange(new System.Windows.Forms.ColumnHeader[] {
this.ch_mssv,
this.ch_hoten,
this.ch_gioitinh,
this.ch_ngaysinh,
this.ch_diachi});
this.lv_sinhvien.GridLines = true;
this.lv_sinhvien.Location = new System.Drawing.Point(68, 227);
this.lv_sinhvien.Name = "lv_sinhvien";
this.lv_sinhvien.Size = new System.Drawing.Size(375, 97);
this.lv_sinhvien.TabIndex = 1;
this.lv_sinhvien.UseCompatibleStateImageBehavior = false;
this.lv_sinhvien.View = System.Windows.Forms.View.Details;
this.lv_sinhvien.SelectedIndexChanged += new System.EventHandler(this.lv_sinhvien_SelectedIndexChanged);
//
// tb_mssv
//
this.tb_mssv.Location = new System.Drawing.Point(199, 42);
this.tb_mssv.Name = "tb_mssv";
this.tb_mssv.Size = new System.Drawing.Size(100, 20);
this.tb_mssv.TabIndex = 0;
//
// tb_hoten
//
this.tb_hoten.Location = new System.Drawing.Point(199, 83);
this.tb_hoten.Name = "tb_hoten";
this.tb_hoten.Size = new System.Drawing.Size(100, 20);
this.tb_hoten.TabIndex = 1;
//
// tb_diachi
//
this.tb_diachi.Location = new System.Drawing.Point(199, 164);
this.tb_diachi.Name = "tb_diachi";
this.tb_diachi.Size = new System.Drawing.Size(100, 20);
this.tb_diachi.TabIndex = 4;
//
// dt_ngaysinh
//
this.dt_ngaysinh.Location = new System.Drawing.Point(199, 201);
this.dt_ngaysinh.Name = "dt_ngaysinh";
this.dt_ngaysinh.Size = new System.Drawing.Size(200, 20);
this.dt_ngaysinh.TabIndex = 5;
//
// bg_gioitinh
//
this.bg_gioitinh.Controls.Add(this.rb_nu);
this.bg_gioitinh.Controls.Add(this.rb_Nam);
this.bg_gioitinh.Location = new System.Drawing.Point(199, 112);
this.bg_gioitinh.Name = "bg_gioitinh";
this.bg_gioitinh.Size = new System.Drawing.Size(145, 49);
this.bg_gioitinh.TabIndex = 4;
this.bg_gioitinh.TabStop = false;
this.bg_gioitinh.Text = "Giới tính";
//
// rb_nu
//
this.rb_nu.AutoSize = true;
this.rb_nu.Location = new System.Drawing.Point(97, 19);
this.rb_nu.Name = "rb_nu";
this.rb_nu.Size = new System.Drawing.Size(39, 17);
this.rb_nu.TabIndex = 3;
this.rb_nu.TabStop = true;
this.rb_nu.Text = "Nữ";
this.rb_nu.UseVisualStyleBackColor = true;
//
// rb_Nam
//
this.rb_Nam.AutoSize = true;
this.rb_Nam.Location = new System.Drawing.Point(6, 19);
this.rb_Nam.Name = "rb_Nam";
this.rb_Nam.Size = new System.Drawing.Size(47, 17);
this.rb_Nam.TabIndex = 2;
this.rb_Nam.TabStop = true;
this.rb_Nam.Text = "Nam";
this.rb_Nam.UseVisualStyleBackColor = true;
//
// lb_hoten
//
this.lb_hoten.AutoSize = true;
this.lb_hoten.Location = new System.Drawing.Point(118, 93);
this.lb_hoten.Name = "lb_hoten";
this.lb_hoten.Size = new System.Drawing.Size(39, 13);
this.lb_hoten.TabIndex = 5;
this.lb_hoten.Text = "Họ tên";
//
// lb_maso
//
this.lb_maso.AutoSize = true;
this.lb_maso.Location = new System.Drawing.Point(118, 52);
this.lb_maso.Name = "lb_maso";
this.lb_maso.Size = new System.Drawing.Size(37, 13);
this.lb_maso.TabIndex = 5;
this.lb_maso.Text = "MSSV";
//
// lb_diachi
//
this.lb_diachi.AutoSize = true;
this.lb_diachi.Location = new System.Drawing.Point(118, 167);
this.lb_diachi.Name = "lb_diachi";
this.lb_diachi.Size = new System.Drawing.Size(40, 13);
this.lb_diachi.TabIndex = 5;
this.lb_diachi.Text = "Địa chỉ";
//
// lb_ngaysinh
//
this.lb_ngaysinh.AutoSize = true;
this.lb_ngaysinh.Location = new System.Drawing.Point(118, 207);
this.lb_ngaysinh.Name = "lb_ngaysinh";
this.lb_ngaysinh.Size = new System.Drawing.Size(54, 13);
this.lb_ngaysinh.TabIndex = 5;
this.lb_ngaysinh.Text = "Ngày sinh";
//
// ch_mssv
//
this.ch_mssv.Text = "MSSV";
this.ch_mssv.Width = 61;
//
// ch_hoten
//
this.ch_hoten.Text = "Họ tên";
this.ch_hoten.TextAlign = System.Windows.Forms.HorizontalAlignment.Center;
this.ch_hoten.Width = 80;
//
// ch_gioitinh
//
this.ch_gioitinh.Text = "Giới tính";
this.ch_gioitinh.TextAlign = System.Windows.Forms.HorizontalAlignment.Center;
this.ch_gioitinh.Width = 62;
//
// ch_ngaysinh
//
this.ch_ngaysinh.Text = "Ngày sinh";
this.ch_ngaysinh.TextAlign = System.Windows.Forms.HorizontalAlignment.Center;
this.ch_ngaysinh.Width = 75;
//
// ch_diachi
//
this.ch_diachi.Text = "Địa chỉ";
this.ch_diachi.TextAlign = System.Windows.Forms.HorizontalAlignment.Center;
//
// bt_ghi
//
this.bt_ghi.Location = new System.Drawing.Point(368, 167);
this.bt_ghi.Name = "bt_ghi";
this.bt_ghi.Size = new System.Drawing.Size(75, 23);
this.bt_ghi.TabIndex = 9;
this.bt_ghi.Text = "Ghi";
this.bt_ghi.UseVisualStyleBackColor = true;
this.bt_ghi.Click += new System.EventHandler(this.bt_ghi_Click);
//
// Form1
//
this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 13F);
this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
this.ClientSize = new System.Drawing.Size(503, 326);
this.Controls.Add(this.bt_ghi);
this.Controls.Add(this.lb_ngaysinh);
this.Controls.Add(this.lb_diachi);
this.Controls.Add(this.lb_maso);
this.Controls.Add(this.lb_hoten);
this.Controls.Add(this.bg_gioitinh);
this.Controls.Add(this.dt_ngaysinh);
this.Controls.Add(this.tb_diachi);
this.Controls.Add(this.tb_hoten);
this.Controls.Add(this.tb_mssv);
this.Controls.Add(this.lv_sinhvien);
this.Controls.Add(this.bt_capnhat);
this.Controls.Add(this.bt_xoa);
this.Controls.Add(this.bt_them);
this.Name = "Form1";
this.Text = "Form1";
this.bg_gioitinh.ResumeLayout(false);
this.bg_gioitinh.PerformLayout();
this.ResumeLayout(false);
this.PerformLayout();
}
#endregion
private System.Windows.Forms.Button bt_them;
private System.Windows.Forms.Button bt_xoa;
private System.Windows.Forms.Button bt_capnhat;
private System.Windows.Forms.ListView lv_sinhvien;
private System.Windows.Forms.TextBox tb_mssv;
private System.Windows.Forms.TextBox tb_hoten;
private System.Windows.Forms.TextBox tb_diachi;
private System.Windows.Forms.DateTimePicker dt_ngaysinh;
private System.Windows.Forms.GroupBox bg_gioitinh;
private System.Windows.Forms.RadioButton rb_nu;
private System.Windows.Forms.RadioButton rb_Nam;
private System.Windows.Forms.Label lb_hoten;
private System.Windows.Forms.Label lb_maso;
private System.Windows.Forms.Label lb_diachi;
private System.Windows.Forms.Label lb_ngaysinh;
private System.Windows.Forms.ColumnHeader ch_mssv;
private System.Windows.Forms.ColumnHeader ch_hoten;
private System.Windows.Forms.ColumnHeader ch_gioitinh;
private System.Windows.Forms.ColumnHeader ch_ngaysinh;
private System.Windows.Forms.ColumnHeader ch_diachi;
private System.Windows.Forms.Button bt_ghi;
}
}
```using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
using System.IO;
using System.Threading;
using System.Runtime.Serialization.Formatters.Binary;
namespace CT_SinhVien
{
public partial class Form1 : Form
{
private List<SinhVien> ds;
public Form1()
{
InitializeComponent();
ds = new List<SinhVien>();
}
//Them 1 ong sv vào items trong listview
private ListViewItem ThemThongTinSV(SinhVien sv)
{
ListViewItem lvi = new ListViewItem(sv.Maso);
lvi.SubItems.Add(sv.Hoten);
lvi.SubItems.Add(sv.Diachi);
lvi.SubItems.Add(sv.Ngaysinh.ToShortDateString());
lvi.SubItems.Add(sv.Gioitinh ? "Nam" : "Nữ");
return lvi;
}
private void HienThi()
{
lv_sinhvien.Items.Clear();
foreach(SinhVien sv in ds)
{
ListViewItem lvi = ThemThongTinSV(sv);
lv_sinhvien.Items.Add(lvi);
}
}
private void Clear()
{
tb_mssv.Clear();
tb_hoten.Clear();
tb_diachi.Clear();
tb_mssv.Focus();
}
private void bt_them_Click(object sender, EventArgs e)
{
SinhVien sv = new SinhVien(tb_mssv.Text, tb_hoten.Text, tb_diachi.Text, dt_ngaysinh.Value, rb_Nam.Checked);
ds.Add(sv);
HienThi();
Clear();
}
private void bt_xoa_Click(object sender, EventArgs e)
{
foreach(ListViewItem lvi in lv_sinhvien.SelectedItems)
{
foreach(SinhVien sv in ds)
{
if(sv.Maso.Equals(lvi.SubItems[0].Text))
{
ds.Remove(sv);
break;
}
}
}
HienThi();
}
private void HienThiTTLen(SinhVien sv)
{
tb_mssv.Text = sv.Maso;
tb_hoten.Text = sv.Hoten;
tb_diachi.Text = sv.Diachi;
dt_ngaysinh.Value = sv.Ngaysinh;
rb_Nam.Checked = sv.Gioitinh;
}
private void bt_capnhat_Click(object sender, EventArgs e)
{
foreach(SinhVien sv in ds)
{
if(sv.Maso.Equals(tb_mssv.Text))
{
sv.Hoten = tb_hoten.Text;
sv.Diachi = tb_diachi.Text;
sv.Ngaysinh = dt_ngaysinh.Value;
sv.Gioitinh = rb_Nam.Checked;
}
}
HienThi();
}
private void lv_sinhvien_SelectedIndexChanged(object sender, EventArgs e)
{
foreach (ListViewItem lvi in lv_sinhvien.SelectedItems)
{
foreach (SinhVien sv in ds)
{
if (sv.Maso.Equals(lvi.SubItems[0].Text))
{
HienThiTTLen(sv);
break;
}
}
}
}
private void bt_ghi_Click(object sender, EventArgs e)
{
FileStream f = new FileStream("hocsinh.dat", FileMode.Create);
BinaryFormatter bf = new BinaryFormatter();
bf.Serialize(f, ds);
f.Close();
}
}
}
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
namespace CT_SinhVien
{
class SinhVien
{
private string v_maso;
private string v_hoten;
private string v_diachi;
private bool v_gioitinh;
private DateTime v_ngaysinh;
public string Maso
{
get { return v_maso; }
set { v_maso = value; }
}
public string Hoten
{
get { return v_hoten; }
set { v_hoten = value; }
}
public string Diachi
{
get { return v_diachi; }
set { v_diachi = value; }
}
public bool Gioitinh
{
get { return v_gioitinh; }
set { v_gioitinh = value; }
}
public DateTime Ngaysinh
{
get { return v_ngaysinh; }
set { v_ngaysinh = value; }
}
public SinhVien()
{
Maso = "";
Hoten = "";
Diachi = "";
Gioitinh = true;
Ngaysinh = DateTime.Now;
}
public SinhVien(string maso, string hoten, string diachi, DateTime ngaysinh, bool gioitinh)
{
Maso = maso;
Hoten =hoten;
Diachi = diachi;
Gioitinh = gioitinh;
Ngaysinh = ngaysinh;
}
}
}using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
namespace CT_SinhVien
{
class SinhVien
{
private string v_maso;
private string v_hoten;
private string v_diachi;
private bool v_gioitinh;
private DateTime v_ngaysinh;
public string Maso
{
get { return v_maso; }
set { v_maso = value; }
}
public string Hoten
{
get { return v_hoten; }
set { v_hoten = value; }
}
public string Diachi
{
get { return v_diachi; }
set { v_diachi = value; }
}
public bool Gioitinh
{
get { return v_gioitinh; }
set { v_gioitinh = value; }
}
public DateTime Ngaysinh
{
get { return v_ngaysinh; }
set { v_ngaysinh = value; }
}
public SinhVien()
{
Maso = "";
Hoten = "";
Diachi = "";
Gioitinh = true;
Ngaysinh = DateTime.Now;
}
public SinhVien(string maso, string hoten, string diachi, DateTime ngaysinh, bool gioitinh)
{
Maso = maso;
Hoten =hoten;
Diachi = diachi;
Gioitinh = gioitinh;
Ngaysinh = ngaysinh;
}
}
}using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
using System.IO;
using System.Threading;
using System.Runtime.Serialization.Formatters.Binary;
namespace CT_SinhVien
{
public partial class Form1 : Form
{
private List<SinhVien> ds;
public Form1()
{
InitializeComponent();
ds = new List<SinhVien>();
}
//Them 1 ong sv vào items trong listview
private ListViewItem ThemThongTinSV(SinhVien sv)
{
ListViewItem lvi = new ListViewItem(sv.Maso);
lvi.SubItems.Add(sv.Hoten);
lvi.SubItems.Add(sv.Diachi);
lvi.SubItems.Add(sv.Ngaysinh.ToShortDateString());
lvi.SubItems.Add(sv.Gioitinh ? "Nam" : "Nữ");
return lvi;
}
private void HienThi()
{
lv_sinhvien.Items.Clear();
foreach(SinhVien sv in ds)
{
ListViewItem lvi = ThemThongTinSV(sv);
lv_sinhvien.Items.Add(lvi);
}
}
private void Clear()
{
tb_mssv.Clear();
tb_hoten.Clear();
tb_diachi.Clear();
tb_mssv.Focus();
}
private void bt_them_Click(object sender, EventArgs e)
{
SinhVien sv = new SinhVien(tb_mssv.Text, tb_hoten.Text, tb_diachi.Text, dt_ngaysinh.Value, rb_Nam.Checked);
ds.Add(sv);
HienThi();
Clear();
}
private void bt_xoa_Click(object sender, EventArgs e)
{
foreach(ListViewItem lvi in lv_sinhvien.SelectedItems)
{
foreach(SinhVien sv in ds)
{
if(sv.Maso.Equals(lvi.SubItems[0].Text))
{
ds.Remove(sv);
break;
}
}
}
HienThi();
}
private void HienThiTTLen(SinhVien sv)
{
tb_mssv.Text = sv.Maso;
tb_hoten.Text = sv.Hoten;
tb_diachi.Text = sv.Diachi;
dt_ngaysinh.Value = sv.Ngaysinh;
rb_Nam.Checked = sv.Gioitinh;
}
private void bt_capnhat_Click(object sender, EventArgs e)
{
foreach(SinhVien sv in ds)
{
if(sv.Maso.Equals(tb_mssv.Text))
{
sv.Hoten = tb_hoten.Text;
sv.Diachi = tb_diachi.Text;
sv.Ngaysinh = dt_ngaysinh.Value;
sv.Gioitinh = rb_Nam.Checked;
}
}
HienThi();
}
private void lv_sinhvien_SelectedIndexChanged(object sender, EventArgs e)
{
foreach (ListViewItem lvi in lv_sinhvien.SelectedItems)
{
foreach (SinhVien sv in ds)
{
if (sv.Maso.Equals(lvi.SubItems[0].Text))
{
HienThiTTLen(sv);
break;
}
}
}
}
private void bt_ghi_Click(object sender, EventArgs e)
{
FileStream f = new FileStream("hocsinh.dat", FileMode.Create);
BinaryFormatter bf = new BinaryFormatter();
bf.Serialize(f, ds);
f.Close();
}
}
}Các class/struct tham gia vào việc Serialization đều phải có attribute Serializable trên đầu.
[Serializable]
class SinhVien{
//...
}
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