C# provides an analog button method, which can be used to automate tasks and interact with the application by programming. One of the application scenarios is to automatically refresh the webpage in the Internet Explorer (IE).
To implement this function, you can use the
function in the library. The following are two methods:SendKeys
Method 1: Use Sendkeys user32.dll
PostMessage
Import Naming space, and use the method to simulate the F5 button:
Method 2: Use PostMessage SendKeys
SendWait
This method has better control of the keys and will not interrupt other inputs:
using System.Windows.Forms; // 注意需要添加此命名空间 ... SendKeys.SendWait("{F5}");
<方法> How to use
Put these code blocks in the cycle to repeat the webpage with a specified interval. For example:
const uint WM_KEYDOWN = 0x0100; const int VK_F5 = 0x74; [DllImport("user32.dll")] static extern bool PostMessage(IntPtr hWnd, uint Msg, int wParam, int lParam); ... PostMessage(proc.MainWindowHandle, WM_KEYDOWN, VK_F5, 0);
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