如何在Windows窗体中禁用更新表单？

Question

在复杂的更新期间,我可能更喜欢一次显示所有更改.我知道有一种方法可以让我这样做,但它是什么？

Answer 1

我认为这个.SpendpendLayout()和ResumeLayout()应该这样做

Answer 2

我没有找到SuspendLayout()并ResumeLayout()做你想要的. LockWindowsUpdate() moobaa提到的诀窍.但是,一次 LockWindowUpdate只适用于一个窗口.

你也可以试试这个:

using System;
using System.Windows.Forms;
using Microsoft.Win32;
using System.Runtime.InteropServices;

public partial class Form1 : Form
{
    [DllImport("user32.dll")]
    public static extern int SendMessage(IntPtr hWnd, Int32 wMsg, bool wParam, Int32 lParam);
    private const int WM_SETREDRAW = 11; 

    public Form1()
    {
      InitializeComponent();
    }

    private void button1_Click(object sender, EventArgs e)
    {
      SendMessage(this.Handle, WM_SETREDRAW, false, 0);

      // Do your thingies here
      SendMessage(this.Handle, WM_SETREDRAW, true, 0);

      this.Refresh();
    }
}

Answer 3

您可以使用旧的Win32 LockWindowUpdate函数:

[DllImport("user32.dll")]
private static extern long LockWindowUpdate(long Handle);

try {
    // Lock Window...
    LockWindowUpdate(frm.Handle);
    // Perform your painting / updates...
} 
finally {
    // Release the lock...
    LockWindowUpdate(0);
}