C# 工具提示未出现在“显示”中
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C# Tooltip not appearing on "Show"
提问by lostiniceland
To fullfill a requirement I have to show a tooltip manually for 30 seconds. According to msdn I just have to use the "Show" method.
为了满足要求，我必须手动显示工具提示 30 秒。根据msdn，我只需要使用“显示”方法。
toolTip.Show(QuestionHelpText, btnHelp, 30000);
But I only get the standard tooltip behavior, meaning that the message appears half a second after my click (only because the mouse pointer is still over the button). I tried some variations like
但我只得到标准的工具提示行为，这意味着在我点击后半秒出现消息（仅因为鼠标指针仍在按钮上）。我尝试了一些变化，比如
toolTip.Show(QuestionHelpText, btnHelp);
but still, nothing happens.
但仍然没有任何反应。
Does anybody have an idea why that is?
有人知道这是为什么吗？
Thanks
谢谢
采纳答案by Bogdan_Ch
I know a simple workaround
我知道一个简单的解决方法
Put a lable (let's name it labelHelp) with empty text near your button
在按钮附近放置一个带有空文本的标签（让我们将其命名为labelHelp）
The following code should work
下面的代码应该工作
private void btnHelp_Click(object sender, EventArgs e)
{
toolTip.Show(QuestionHelpText, labelHelp, 3000);
}
回答by Rob
Where is "toolTip" declared?
“工具提示”在哪里声明？
MSDN doesn't indicate (on the ToolTip.Show Method documentation) that the Show method is a blocking call, so if you're declaring toolTip in a method and then pretty much straight afterwards exiting the method then toolTip will have fallen out of scope, causing it to not render or disappear.
MSDN 没有指出（在ToolTip.Show Method 文档中）Show 方法是一个阻塞调用，所以如果你在一个方法中声明 toolTip，然后几乎直接退出该方法，那么 toolTip 将超出范围，导致它不呈现或消失。
回答by Zain Ali
I think you need to set initialDelay property of tool tip
我认为您需要设置工具提示的 initialDelay 属性
