winform获取当前名称实例汇总

要实现WinForm获取当前名称实例的功能，我们可以使用以下步骤：

1.使用System.Diagnostics.Process类获取当前正在运行的所有进程。

using System.Diagnostics;

Process[] processes = Process.GetProcesses();

2.使用LINQ查询找到我们需要的进程实例。

Process process = 
  processes.FirstOrDefault(p => p.ProcessName.Equals("YourProcessName"));

3.使用process.MainWindowHandle获取该进程的主窗口句柄。

IntPtr hWnd = process.MainWindowHandle;

4.使用Win32 API获取该句柄对应窗口的标题名称。

string windowTitle = string.Empty;
int maxLength = 256;
StringBuilder sb = new StringBuilder(maxLength);

if (GetWindowText(hWnd, sb, maxLength) > 0) 
{
    windowTitle = sb.ToString();
}

完整代码如下，其中包含了两个示例：

using System;
using System.Diagnostics;
using System.Runtime.InteropServices;
using System.Text;
using System.Windows.Forms;

public class WinFormUtils
{
    [DllImport("user32.dll")]
    static extern int GetWindowText(IntPtr hWnd, StringBuilder text, int count);

    public static string GetActiveWindowName()
    {
        Process[] processes = Process.GetProcesses();
        Process process = processes.FirstOrDefault(p => p.ProcessName.Equals("YourProcessName"));
        if (process != null)
        {
            IntPtr hWnd = process.MainWindowHandle;
            if (hWnd != IntPtr.Zero)
            {
                string windowTitle = string.Empty;
                int maxLength = 256;
                StringBuilder sb = new StringBuilder(maxLength);
                if (GetWindowText(hWnd, sb, maxLength) > 0) 
                {
                    windowTitle = sb.ToString();
                }
                return windowTitle;
            }
        }
        return string.Empty;
    }
}

// 示例1：获取当前活动窗口的名称
private void btnGetActiveWindowName_Click(object sender, EventArgs e)
{
    string name = WinFormUtils.GetActiveWindowName();
    MessageBox.Show(
        $"Active window name: {name}", 
        "Result", 
        MessageBoxButtons.OK, 
        MessageBoxIcon.Information);
}

// 示例2：获取指定进程的窗口名称
private void btnGetProcessWindowName_Click(object sender, EventArgs e)
{
    Process[] processes = Process.GetProcesses();
    string processName = "notepad";
    Process process = processes.FirstOrDefault(p => p.ProcessName.Equals(processName));
    if (process != null)
    {
        IntPtr hWnd = process.MainWindowHandle;
        if (hWnd != IntPtr.Zero)
        {
            string windowTitle = string.Empty;
            int maxLength = 256;
            StringBuilder sb = new StringBuilder(maxLength);
            if (GetWindowText(hWnd, sb, maxLength) > 0) 
            {
                windowTitle = sb.ToString();
            }
            MessageBox.Show(
                $"Window name of {processName}: {windowTitle}", 
                "Result", 
                MessageBoxButtons.OK, 
                MessageBoxIcon.Information);
        }
        else 
        {
            MessageBox.Show(
                $"Process {processName} does not have a main window", 
                "Error", 
                MessageBoxButtons.OK, 
                MessageBoxIcon.Error);
        }
    }
}

以上就是WinForm获取当前名称实例汇总的完整攻略和两个示例说明。