private void RemoveAllControls()
{
Controls.Remove(readerControl);
if (readerControl != null)
{
readerControl.Stop();
}
readerControl = null;
Controls.Remove(logControl);
logControl = null;
Controls.Remove(stockInControl);
// 尝试注销config control的read tags监听事件
try
{
stockInControl.ReadTagsClicked -= stockInControl_ReadTagsClicked;
}
// 但是如果没有注册过，注销可能失败，不影响程序正常使用，故不处理异常
catch (Exception ex) { }
stockInControl = null;
Controls.Remove(configControl);
configControl = null;
}
private void AddLogControl()
{
if (logControl == null)
{
logControl = new LogControl();
logControl.Dock = DockStyle.Fill;
logControl.Name = "logger";
Controls.Add(logControl);
}
}