Windows窗体标签可见性属性问题 [英] windows form label visibility property problem

问题描述

我正在尝试创建一个win表单。其中有一个默认不可见的标签。基于条件，我将其可见性设置为true。但是有一个问题。





如果我在没有调试的情况下运行程序就无法看到标签。

但是当我调试到我更改可见性属性然后点击F5的地方时，我能够看到。奇怪的rt ???请帮帮我



这是代码

Hi,

I am trying to create a win form.In it there is a label which by default is not visible. Based on a condition i am setting its visibility to true. But one issue is there.


If i run the program without debugging am not able to see the label.
But when i debug to the place where i change the visibility property and then hit F5 , i am able to see. Weird rt??? please help me

THis is the code

if (_dtWorkitems != null && _dtWorkitems.Rows.Count > 0)
              {
                  pgBar.Minimum = 1;
                  pgBar.Maximum = _dtWorkitems.Rows.Count;
                  pgBar.Step = 1;
                  pgBar.Visible = true;
                  txtMsg.Visible = true;
              }

条件如果数据表不为null，那么我正在改变可见性。然后我循环数据表。最后我改变了标签的属性&进度条回到假。我尝试评论，退出循环后显示标签。为什么

The condition was that if a data table is not null then i am changing the visibility. Then i am looping the datatable . At the end i am changing the property of the label & progressbar back to false. I tried commenting that and the label was shown after exiting the loop. Why

推荐答案

尝试调用invalidate或update或者其他东西。这应该强制重绘。

如果你从一开始就看到标签。那么呢？

try calling invalidate or update or something. that should force a redraw.
If you leave the label visible from the start. is it there then?

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