The Coding Way
以下是 VB.NET 中使用 System.Threading 命名空间启动 10 个线程并调用函数的示例代码:Imports System.Threading Public Class Form1 Private Sub Button1_Click(sender As Object, e As EventArgs) Handles Button1.Click ' 创建一个包含 10 个线程的 Thread 数组 Dim threads(9) As Thread For i As Integer = 0 To 9 threads(i) = New Thread(AddressOf DoWork) threads(i).Start(i) Next End Sub Private Sub DoWork(ByVal data As Object) Dim id As Integer = CType(data, Integer)
其实还有其它的方法来延迟过程,并不卡死窗体。' 导入 Threading 命名空间 Imports System.Threading Public Class Form1 ' 创建延迟函数 Public Async Function Delay(ByVal milliseconds As Integer) As Task Await Task.Delay(milliseconds) End Function ' 使用示例 Private Async Sub Button1_Click(sender As Object, e As EventArgs) Handles Button1.Click For i = 0 To 10 ListBox1.Items.Add(i) Await Delay(3000) ' 延迟 3 秒 Next End Sub End Class
Imports System.Runtime.InteropServices Imports System.Text Module Module1 '定义HOOKPROC委托 Private Delegate Function HookProc(ByVal nCode As Integer, ByVal wParam As IntPtr, ByVal lParam As IntPtr) As Integer '定义Win32 API函数 <DllImport("User32.dll", SetLastError:=True)> Private Function SetWindowsHookEx(ByVal idHook As Integer, ByVal lpfn As HookProc, ByVal hInstance As IntPtr, ByVal threadId As UInteger) As IntPtr End Function <DllImport("User3
下面是 VB.NET 中使用 HttpClient 类进行 GET 请求的示例代码:Imports System.Net.Http Public Class Form1 Private Async Sub Button1_Click(sender As Object, e As EventArgs) Handles Button1.Click ' 创建一个 HttpClient 对象实例 Using client As New HttpClient() ' 向指定 URL 发送 GET 请求,并等待响应 Dim response As HttpResponseMessage = Await client.GetAsync("https://example.com") ' 检查是否成功,如果成功则读取响应内容 If response.IsSuccessStatusCode Then Dim c
在 VB.NET 的 HttpClient 类中,您可以通过设置 HTTP 请求的 Content-Type 标头来指定请求正文的编码方式。下面是一个例子:Imports System.Net.Http Imports System.Text Public Class Form1 Private Async Sub Button1_Click(sender As Object, e As EventArgs) Handles Button1.Click Using client As New HttpClient() ' 创建一个 StringContent 对象,并将其编码方式设置为 UTF-8 Dim content As New StringContent("Hello, world!", Encoding.UTF8, "text/plain") Dim response As HttpResponseMessage = Await cl
正好在五一劳动节搭建,以后发布一些自己收藏的软件还有分享一些源码。
LaoDan
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