.net - ReleaseHandleFailed 异常

Question

我刚刚在一个相当简单的小程序上得到了以下该死的 MDA 异常:

A SafeHandle or CriticalHandle of type 'Microsoft.Win32.SafeHandles.SafeCapiHashHandle' failed to properly release the handle with value 0x004E48C0. This usually indicates that the handle was released incorrectly via another means (such as extracting the handle using DangerousGetHandle and closing it directly or building another SafeHandle around it.)

我从来没有见过这样的事情。我的程序代码是:

public partial class SmsEditorForm : Form
{
    public SmsEditorForm()
    {
        InitializeComponent();
    }

    private void SmsEditorForm_Load(object sender, EventArgs e)
    {          
        using (var ents = new TemplateEntities())
        {
            templateCombo.DataSource = ents.NotificationTemplates.OrderBy(nt => nt.TemplateName).ToList();
            jobCardCombo.DataSource = ents.JobCards.Where(jc => !jc.JobDeleted && !jc.Archived).ToList();
        }
    }

    private void smsText_TextChanged(object sender, EventArgs e)
    {
        charCountLabel.Text = smsText.Text.Trim().Length.ToString();
    }

    private void templateCombo_SelectedIndexChanged(object sender, EventArgs e)
    {
        using (var ents = new TemplateEntities())
        {
            smsText.Text = ents.NotificationTemplates.Single(nt => nt.TemplateId == (int) templateCombo.SelectedValue).ExternalRecipientSms;
        }
    }
}

Answer 1

看起来像是您的 SMS 库中的问题。特别是，代码的任何部分使用 SafeCapiHashHandle (这是一个加密句柄，因此，例如，通过 SSL 使用 Web 服务会导致这种情况)。