How Can I Programmatically Refresh Internet Explorer Using C#?

C#code automatically refresh the IE browser

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:

<code class="language-csharp">using System.Windows.Forms; // 注意需要添加此命名空间

...

SendKeys.SendWait("{F5}");</code>

How to use

Put these code blocks in the cycle to repeat the webpage with a specified interval. For example:

<code class="language-csharp">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);</code>

This solution allows your C#program to automatically refresh the webpage in IE without user intervention. By setting the time interval accordingly, you can automatically refresh the process and update your webpage regularly. Please note that continuously running this code may consume system resources, and it is recommended to adjust the refresh frequency according to actual needs. In addition, this method depends on the handle of the IE browser window. If the IE browser is closed or collapsed, the program may have abnormalities. A more stable solution may need to use the COM interface to directly operate the IE browser object.

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