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private void backgroundWorker1_DoWork(object sender, DoWorkEventArgs e)

{

    // 这里模拟一个耗时的数据加载操作，比如从数据库读取数据

    System.Threading.Thread.Sleep(5000);

    // 假设这里是真正从数据库获取数据的代码

    List<string> data = new List<string>();

    data.Add("Data 1");

    data.Add("Data 2");

    // 将加载的数据作为结果返回

    e.Result = data;

}

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private void backgroundWorker1_RunWorkerCompleted(object sender, RunWorkerCompletedEventArgs e)

{

    if (e.Error == null)

    {

        List<string> data = (List<string>)e.Result;

        // 假设dataGridView1是一个DataGridView控件，用于显示数据

        dataGridView1.DataSource = data;

    }

    else

    {

        // 处理错误情况，比如显示错误消息

        MessageBox.Show("数据加载出错：" + e.Error.Message);

    }

}

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private void button1_Click(object sender, EventArgs e)

{

    if (!backgroundWorker1.IsBusy)

    {

        backgroundWorker1.RunWorkerAsync();

    }

}

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private async void button2_Click(object sender, EventArgs e)

{

    // 假设LoadDataAsync是一个异步方法，用于加载数据

    List<string> data = await LoadDataAsync();

    dataGridView1.DataSource = data;

}

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private async Task<List<string>> LoadDataAsync()

{

    using (HttpClient client = new HttpClient())

    {

        HttpResponseMessage response = await client.GetAsync("https://example.com/api/data");

        if (response.IsSuccessStatusCode)

        {

            string json = await response.Content.ReadAsStringAsync();

            // 假设这里是将JSON数据反序列化为List<string>的代码

            return JsonConvert.Deserialize<List<string>>(json);

        }

        else

        {

            throw new Exception("数据加载失败");

        }

    }

}