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[C#] Loading Form

프로그래밍/C# 2017. 5. 19. 01:13
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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.Threading;
using System.Threading.Tasks;
using System.Windows.Forms;

namespace WindowsFormsApp2
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        private void button1_Click(object sender, EventArgs e)
        {
            int sum = 0;

            new LoadingForm(() => {
                                    for (int i = 0; i < 1000; i++)
                                    {
                                        sum += i;
                                    }

                                    Thread.Sleep(3000);

                                    Action act = () => this.label1.Text = sum.ToString();

                                    if (this.InvokeRequired)
                                        this.BeginInvoke(act);
                                    else
                                        act();
                                  }).ShowDialog();
        }
    }
}

 

 



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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.Threading;
using System.Threading.Tasks;
using System.Windows.Forms;

namespace WindowsFormsApp2
{
    public partial class LoadingForm : Form
    {
        private readonly MethodInvoker method;

        public LoadingForm(MethodInvoker action)
        {
            InitializeComponent();
            this.Load += LoadingForm_Load;

            this.method = action;

            this.TopMost = true;
            this.StartPosition = FormStartPosition.CenterScreen;
        }

        private void LoadingForm_Load(object sender, EventArgs e)
        {
            new Thread(() =>
            {
                method.Invoke();
                InvokeAction(this, Dispose);
            }).Start();
        }

        private void InvokeAction(LoadingForm control, MethodInvoker action)
        {
            if (control.InvokeRequired)
                control.BeginInvoke(action);
            else
                action();
        }
    }
}

 

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