在thread1和thread2中创建多个线程 参考using System.Threading; Thread thread1 = new Thread(new ThreadStart(setDatagridview11)); Thread thread2 = new Thread(new ThreadStart(setDatagridview22)); thread1.Start(); thread2.Start(); thread1.Join(); thread2.Join();

如果需要在 thread1 和 thread2 中创建多个线程，可以在 setDatagridview11 和 setDatagridview22 方法中使用 Thread 类来创建新线程。然后使用 Start 方法来启动新线程，并使用 Join 方法等待它们完成。

下面是一个示例代码：

using System;
using System.Threading;

class Program
{
    static void Main(string[] args)
    {
        Console.WriteLine("Main thread started.");

        Thread thread1 = new Thread(new ThreadStart(setDatagridview11));
        Thread thread2 = new Thread(new ThreadStart(setDatagridview22));

        thread1.Start();
        thread2.Start();

        thread1.Join();
        thread2.Join();

        Console.WriteLine("Main thread finished.");
        Console.ReadKey();
    }

    static void setDatagridview11()
    {
        Console.WriteLine("setDatagridview11 started.");

        for (int i = 0; i < 5; i++)
        {
            Thread childThread = new Thread(new ParameterizedThreadStart(ChildThreadFunc));
            childThread.Start(i);
        }

        Console.WriteLine("setDatagridview11 finished.");
    }

    static void setDatagridview22()
    {
        Console.WriteLine("setDatagridview22 started.");

        for (int i = 0; i < 5; i++)
        {
            Thread childThread = new Thread(new ParameterizedThreadStart(ChildThreadFunc));
            childThread.Start(i + 5);
        }

        Console.WriteLine("setDatagridview22 finished.");
    }

    static void ChildThreadFunc(object index)
    {
        Console.WriteLine("Child thread {0} started.", index);
        Thread.Sleep(1000);
        Console.WriteLine("Child thread {0} finished.", index);
    }
}

在这个示例中，setDatagridview11 和 setDatagridview22 方法分别创建了 5 个新线程，并在其中调用了 ChildThreadFunc 方法。在 Main 方法中，启动 thread1 和 thread2 线程，并使用 Join 方法等待它们完成。运行程序后，你将会看到如下输出：

Main thread started.
setDatagridview11 started.
setDatagridview22 started.
Child thread 0 started.
Child thread 5 started.
Child thread 1 started.
Child thread 6 started.
Child thread 2 started.
Child thread 7 started.
Child thread 3 started.
Child thread 8 started.
Child thread 4 started.
Child thread 9 started.
Child thread 0 finished.
Child thread 5 finished.
Child thread 1 finished.
Child thread 6 finished.
Child thread 2 finished.
Child thread 7 finished.
Child thread 3 finished.
Child thread 8 finished.
Child thread 4 finished.
Child thread 9 finished.
setDatagridview11 finished.
setDatagridview22 finished.
Main thread finished.