Hiển thị thông báo Toast Message trong lập trình Winform

Bài viết hôm nay sẽ hướng dẫn các bạn, cách tạo custom control để hiển thị thông báo Toast Message trong lập trình C#, Winform.

Dưới đây là giao diện demo ứng dụng Toast Message Winform:

Đầu tiên, các bạn thiết kế cho mình một form Frm_Alert.cs

Source code Frm_Alert.cs

using CustomAlertBoxDemo.Properties;
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;

namespace CustomAlertBoxDemo
{
    public partial class Form_Alert : Form
    {
        public Form_Alert()
        {
            InitializeComponent();
        }

        public enum enmAction
        {
            wait,
            start,
            close
        }

        public enum enmType
        {
            Success,
            Warning,
            Error,
            Info
        }
        private Form_Alert.enmAction action;

        private int x, y;

        private void button1_Click(object sender, EventArgs e)
        {
            
        }

        private void timer1_Tick(object sender, EventArgs e)
        {
            switch(this.action)
            {
                case enmAction.wait:
                    timer1.Interval = 5000;
                    action = enmAction.close;
                    break;
                case Form_Alert.enmAction.start:
                    this.timer1.Interval = 1;
                    this.Opacity += 0.1;
                    if (this.x < this.Location.X)
                    {
                        this.Left--;
                    }
                    else
                    {
                        if (this.Opacity == 1.0)
                        {
                            action = Form_Alert.enmAction.wait;
                        }
                    }
                    break;
                case enmAction.close:
                    timer1.Interval = 1;
                    this.Opacity -= 0.1;

                    this.Left -= 3;
                    if (base.Opacity == 0.0)
                    {
                        base.Close();
                    }
                    break;
            }
        }

        private void pictureBox2_Click(object sender, EventArgs e)
        {
            timer1.Interval = 1;
            action = enmAction.close;
        }

        public void showAlert(string msg, enmType type)
        {
            this.Opacity = 0.0;
            this.StartPosition = FormStartPosition.Manual;
            string fname;

            for (int i = 1; i < 10; i++)
            {
                fname = "alert" + i.ToString();
                Form_Alert frm = (Form_Alert)Application.OpenForms[fname];

                if (frm == null)
                {
                    this.Name = fname;
                    this.x = Screen.PrimaryScreen.WorkingArea.Width - this.Width + 15;
                    this.y = Screen.PrimaryScreen.WorkingArea.Height - this.Height * i - 5 * i;
                    this.Location = new Point(this.x, this.y);
                    break;

                }

            }
            this.x = Screen.PrimaryScreen.WorkingArea.Width - base.Width - 5;

            switch(type)
            {
                case enmType.Success:
                    this.pictureBox1.Image = Resources.success;
                    this.BackColor = Color.SeaGreen;
                    break;
                case enmType.Error:
                    this.pictureBox1.Image = Resources.error;
                    this.BackColor = Color.DarkRed;
                    break;
                case enmType.Info:
                    this.pictureBox1.Image = Resources.info;
                    this.BackColor = Color.RoyalBlue;
                    break;
                case enmType.Warning:
                    this.pictureBox1.Image = Resources.warning;
                    this.BackColor = Color.DarkOrange;
                    break;
            }


            this.lblMsg.Text = msg;

            this.Show();
            this.action = enmAction.start;
            this.timer1.Interval = 1;
            this.timer1.Start();
        }
    }
}

Và cách chúng ta sử dụng ở FrmMain.cs bên dưới đây:

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;

namespace CustomAlertBoxDemo
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        public void Alert(string msg, Form_Alert.enmType type)
        {
            Form_Alert frm = new Form_Alert();
            frm.showAlert(msg,type);
        }
        private void button1_Click(object sender, EventArgs e)
        {
            this.Alert("Success Alert",Form_Alert.enmType.Success);
        }

        private void button2_Click(object sender, EventArgs e)
        {
            this.Alert("Warning Alert", Form_Alert.enmType.Warning);
        }

        private void button3_Click(object sender, EventArgs e)
        {
            this.Alert("Error Alert", Form_Alert.enmType.Error);
        }

        private void button4_Click(object sender, EventArgs e)
        {
            this.Alert("Info Alert", Form_Alert.enmType.Info);
        }
    }
}