小编use*_*208的帖子

我有一些示例源代码,下面有2个锁定语句.在我的测试运行期间,我点击'r1RefreshButton'将showReport1方法放入一个永久循环中.然后我点击'r2RefereshButton'来检查锁是否按预期进行.

我发现showReport2上的锁并没有真正锁定.我错过了什么？

public partial class TestReportsForm : Form
{
    private static readonly Object thisLock = new Object();

    public TestReportsForm() { InitializeComponent(); }

    private void showReport1()
    {
        lock (thisLock)
        {
            r1RefreshButton.Enabled = false;
            try
            {
                // while loop is used to simulate long process
                while (true)
                {
                    Application.DoEvents();
                }
            }
            catch (Exception ex)
            {
                String errorMessage = "Error encountered\n\n" +
                       "Error details: \n" +
                       ex.Message;
                MessageBox.Show(this, errorMessage, "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
            }
            finally
            {
                r1RefreshButton.Enabled = true;
            }
        }
    }

    private void …