如何在 C# Winforms 中向标签添加提示或工具提示？
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How can I add a hint or tooltip to a label in C# Winforms?
提问by B. Clay Shannon
It seems that the Labelhas no Hintor ToolTipor Hovertextproperty. So what is the preferred method to show a hint, tooltip, or hover text when the Labelis approached by the mouse?
看来，Label没有Hint或ToolTip或Hovertext财产。那么当Label鼠标接近时，显示提示、工具提示或悬停文本的首选方法是什么？
采纳答案by Yuck
回答by scibuff
System.Windows.Forms.ToolTip ToolTip1 = new System.Windows.Forms.ToolTip();
ToolTip1.SetToolTip( Label1, "Label for Label1");
回答by SeeSharp
yourToolTip = new ToolTip();
//The below are optional, of course,
yourToolTip.ToolTipIcon = ToolTipIcon.Info;
yourToolTip.IsBalloon = true;
yourToolTip.ShowAlways = true;
yourToolTip.SetToolTip(lblYourLabel,"Oooh, you put your mouse over me.");
回答by ac0de
just another way to do it.
只是另一种方式来做到这一点。
Label lbl = new Label();
new ToolTip().SetToolTip(lbl, "tooltip text here");
回答by cChacon
Just to share my idea...
只是分享我的想法...
I created a custom class to inherit the Label class. I added a private variable assigned as a Tooltip class and a public property, TooltipText. Then, gave it a MouseEnter delegate method. This is an easy way to work with multiple Label controls and not have to worry about assigning your Tooltip control for each Label control.
我创建了一个自定义类来继承 Label 类。我添加了一个分配为 Tooltip 类的私有变量和一个公共属性 TooltipText。然后，给它一个 MouseEnter 委托方法。这是使用多个 Label 控件的简单方法，而不必担心为每个 Label 控件分配 Tooltip 控件。
public partial class ucLabel : Label
{
private ToolTip _tt = new ToolTip();
public string TooltipText { get; set; }
public ucLabel() : base() {
_tt.AutoPopDelay = 1500;
_tt.InitialDelay = 400;
// _tt.IsBalloon = true;
_tt.UseAnimation = true;
_tt.UseFading = true;
_tt.Active = true;
this.MouseEnter += new EventHandler(this.ucLabel_MouseEnter);
}
private void ucLabel_MouseEnter(object sender, EventArgs ea)
{
if (!string.IsNullOrEmpty(this.TooltipText))
{
_tt.SetToolTip(this, this.TooltipText);
_tt.Show(this.TooltipText, this.Parent);
}
}
}
In the form or user control's InitializeComponent method (the Designer code), reassign your Label control to the custom class:
在窗体或用户控件的 InitializeComponent 方法（设计器代码）中，将您的 Label 控件重新分配给自定义类：
this.lblMyLabel = new ucLabel();
Also, change the private variable reference in the Designer code:
此外，更改设计器代码中的私有变量引用：
private ucLabel lblMyLabel;
