停止其他项目的后台工作人员

我在一个解决方案中有两个项目。一个是form (exe)，一个是class (dll)。

我有一个背景工作者(在形式项目)像这样:

private void CalculateBackgroundWorker_DoWork(object sender, DoWorkEventArgs e)
{          
        try
        {
            BackgroundWorker worker = sender as BackgroundWorker;
            if (worker.CancellationPending == true)
            {
                e.Cancel = true;
            }
            else
            {
                Grav_Fluid.Rule.Processing_Controller.SpectralAnalysisFormController spectralAnalysisFormController = new Grav_Fluid.Rule.Processing_Controller.SpectralAnalysisFormController();
                outputDataTable = spectralAnalysisFormController.Proccess(inputDataTable, double.Parse(DistanceIntervalTextBox.Text), worker);
            }
        }
        catch (Exception ex)
        {
            MessageBox.Show(ex.Message);
        }
    }

这是发生在类项目(dll):

public DataTable Proccess(DataTable inputDataTable, double ITV, System.ComponentModel.BackgroundWorker backgroundWorker)
    {
        try
        {
            int RowCount = inputDataTable.Rows.Count;
            int orde = 7;
            int dataCount = inputDataTable.Rows.Count;
            double[] coef = new double[orde + 3];
            double[] distance = new double[dataCount];
            ...
            ...
            for(int i=0; i<newDataCount; i++)
            {
                ...
                backgroundWorker.ReportProgress(Convert.ToInt32(i * 80 / newDataCount));
            }
            return dT;
        }
        catch (Exception ex)
        {
            throw ex;
        }
    }

我的问题是，怎样才能取消我的后台工作?我只是想移动这段代码:

if (worker.CancellationPending == true)
{
   e.Cancel = true;
}

到类项目中，因此我可以立即停止该进程。但我做不到。有人能帮我吗?

================================

更新:从其他函数中取消自身:

    private void buttonCancel_Click(object sender, EventArgs e)
    {
        if (CalculateBackgroundWorker.WorkerSupportsCancellation == true)
        {
            CalculateBackgroundWorker.CancelAsync();
            LoaderForm.Close();
        }
    }
    private void CalculateButton_Click(object sender, EventArgs e)
    {
        try
        {
            ClearOutputDataTable();
            if (CalculateBackgroundWorker.IsBusy != true)
            {
                LoaderForm = new General.LoaderForm();
                LoaderForm.Canceled += new EventHandler<EventArgs>(buttonCancel_Click);
                LoaderForm.Show();
                LoaderForm.TopMost = true;
                CalculateBackgroundWorker.RunWorkerAsync();
            }
        }
        catch (Exception ex)
        {
              Messagebox.Show(ex.Message);
        }
    }

我更新了我的问题。我有一个显示进度条的加载表单。它将在计算过程中出现。此表单具有取消按钮，该按钮将执行以取消进程。

是loaderform后面的代码:

public partial class LoaderForm : Form
{
    public LoaderForm()
    {
        InitializeComponent();
    }
    public string Message
    {
        set { PercentageLabel.Text = value; }
    }
    public int ProgressValue
    {
        set { LoadProgressBar.Value = value; }
    }
    public event EventHandler<EventArgs> Canceled;
    private void CancelButton_Click(object sender, EventArgs e)
    {
        EventHandler<EventArgs> ea = Canceled;
        if (ea != null)
            ea(this, e);
    }
}

更新2:

即使我调用cancellAsync，进程也会继续，直到完成。BackgroundWorker_DoWork中的代码只在这种情况下工作(示例):

    private void backgroundWorker1_DoWork(object sender, DoWorkEventArgs e)
    {
        BackgroundWorker worker = sender as BackgroundWorker;
        for (int i = 1; i <= 10; i++)
        {
            if (worker.CancellationPending == true)
            {
                e.Cancel = true;
                break;
            }
            else
            {
                // Perform a time consuming operation and report progress.
                worker.ReportProgress(i * 10);
                System.Threading.Thread.Sleep(500);
            }
        }
    }

for(int i=0; i<newDataCount; i++)
{
  if(backgroundWorker.CancellationPending)
  {
    return;
  }