[Winform Study Notes (9)] Winform form program delay function

Preface

When developing a Winform form program, sometimes it is necessary for the program to delay or sleep for a few seconds. If the Thread.Sleep() method is used directly, it will cause the program to suspended animation and the UI interface to stop responding. This article mainly introduces a method to prevent the program from suspended animation
. Other messages can also be responded to during the delay process.

text

1. Specific code

/// <summary>
/// 延迟函数(毫秒级)
/// </summary>
/// <param name="time">需要延迟的时间</param>
public static void Delay(double time)
{
    
    
    double strart = Environment.TickCount;
    while (Math.Abs(Environment.TickCount - strart) < time)
    {
    
    
        Application.DoEvents();
    }
}

2. Usage examples

1. Use the Delay() method

           public void Add(int a,int b)
           {
         
         
               Delay(5000);
               label1.Text = (a + b).ToString();
           }
   

   
   As you can see from the above animation, after executing the main form method, you can also perform other operations.

2. Use the Thread.Sleep() method

           public void Add(int a,int b)
           {
         
         
               Thread.Sleep(5000);
               label1.Text = (a + b).ToString();
           }
   

   
   You can see from the animation that when the main form method is executed, the UI interface stops responding, and the subform pops up after the delay time expires.