C#

Lương Tuấn Anh wrote:

you can said more details or help me code in this project.

public static class SuspendUpdate
{
    private const int WM_SETREDRAW = 0x000B;

    public static void Suspend(Control control)
    {
        Message msgSuspendUpdate = Message.Create(control.Handle, WM_SETREDRAW, IntPtr.Zero,
            IntPtr.Zero);

        NativeWindow window = NativeWindow.FromHandle(control.Handle);
        window.DefWndProc(ref msgSuspendUpdate);
    }

    public static void Resume(Control control)
    {
        // Create a C "true" boolean as an IntPtr
        IntPtr wparam = new IntPtr(1);
        Message msgResumeUpdate = Message.Create(control.Handle, WM_SETREDRAW, wparam,
            IntPtr.Zero);

        NativeWindow window = NativeWindow.FromHandle(control.Handle);
        window.DefWndProc(ref msgResumeUpdate);

        control.Invalidate();
    }
}

Bastard Programmer from Hell
If you can't read my code, try converting it here[^]

Lương Tuấn Anh wrote:

i will ask you if i dont know

using System;
using System.Windows.Forms;
using System.Threading;
namespace WindowsFormsApplication1
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            SuspendUpdate.Suspend(this);
            InitializeComponent();
            SuspendUpdate.Resume(this);
        }
        public void button1_Click(object sender, EventArgs e)
        {
            SuspendUpdate.Suspend(this.pictureBox1);
            this.pictureBox1.Image = // load image here
            SuspendUpdate.Resume(this.pictureBox1);
        }
    }
    public static class SuspendUpdate
    {
        const int WM_SETREDRAW = 0x000B;
        public static void Suspend(Control control)
        {
            Message msgSuspendUpdate = Message.Create(
                control.Handle, WM_SETREDRAW, IntPtr.Zero, IntPtr.Zero);
            NativeWindow window = NativeWindow.FromHandle(control.Handle);
            window.DefWndProc(ref msgSuspendUpdate);
        }
        public static void Resume(Control control)
        {
            IntPtr wparam = new IntPtr(1); // Create a C "true" boolean as an IntPtr
            Message msgResumeUpdate = Message.Create(
                control.Handle, WM_SETREDRAW, wparam, IntPtr.Zero);
            NativeWindow window = NativeWindow.FromHandle(control.Handle);
            window.DefWndProc(ref msgResumeUpdate);
            control.Invalidate(); // Causes a repaint
        }
    }
}

Lương Tuấn Anh wrote:

Do you have Yahoo or mail ?

Bastard Programmer from Hell
If you can't read my code, try converting it here[^]

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 testForm
{
    
    public partial class Form1 : Form
    {
        public Form1()
        {
            SuspendUpdate.Suspend(this);
            InitializeComponent();
            loadUC1();
            SuspendUpdate.Resume(this);

        }


        public void loadUC1()
        {
            panel1.Controls.Clear();
            UserControl1 test = new UserControl1();
            SuspendUpdate.Suspend(this.panel1);
            panel1.Controls.Add(test);
            SuspendUpdate.Resume(this.panel1);
        }

        public void loadUC2()
        {
            panel1.Controls.Clear();
            UserControl2 test2 = new UserControl2();
            SuspendUpdate.Suspend(test2);
            panel1.Controls.Add(test2);
            SuspendUpdate.Resume(test2);
        }

        private void button1_Click(object sender, EventArgs e)
        {
            loadUC1();

        }

        private void button2_Click(object sender, EventArgs e)
        {
            loadUC2();
        }
    }
    public static class SuspendUpdate
    {
        private const int WM_SETREDRAW = 0x000B;

        public static void Suspend(Control control)
        {
            Message msgSuspendUpdate = Message.Create(control.Handle, WM_SETREDRAW, IntPtr.Zero,
                IntPtr.Zero);

            NativeWindow window = NativeWindow.FromHandle(control.Handle);
            window.DefWndProc(ref msgSuspendUpdate);
        }

        public static void Resume(Control control)
        {
            // Create a C "true" boolean as an IntPtr
            IntPtr wparam = new IntPtr(1);
            Message msgResumeUpdate = Message.Create(control.Handle, WM_SETREDRAW, wparam,
                IntPtr.Zero);

            NativeWindow window = NativeWindow.FromHandle(control.Handle);
            window.DefWndProc(ref msgResumeUpdate);

            control.Invalidate();
        }
    }
}

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Drawing;
using System.Data;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;

namespace testForm
{
    public partial class UserControl1 : UserControl
    {
        public UserControl1()
        {
            SuspendUpdate.Suspend(this);
            InitializeComponent();
            this.DoubleBuffered = true;
            SuspendUpdate.Resume(this);
        }
    }
}