我必须找到一个快速的解决方案，所以我只是使用了一个具有这些属性的文本框:

var myLabel = new TextBox
                    {
                        Text = "xxx xxx xxx",
                        WordWrap = true,
                        AutoSize = false,
                        Enabled = false,
                        Size = new Size(60, 30),
                        BorderStyle = BorderStyle.None,
                        Multiline =  true,
                        BackColor =  container.BackColor
                    };

简单的回答是:关闭自动大小设置。

这里的大问题是标签不会自动改变它的高度(只改变宽度)。要做到这一点，你需要子类化标签，并包括垂直调整大小逻辑。

基本上你需要在OnPaint中做的是:

测量文本高度(Graphics.MeasureString)。 如果标签高度不等于文本的高度，则设置高度并返回。 绘制文本。

您还需要在构造函数中设置ResizeRedraw样式标志。

如果需要保持按钮尺寸不变:

myButton.Text = "word\r\nwrapped"

这个问题的简单答案是改变Label的DOCK属性。默认为“NONE”。

If your panel is limiting the width of your label, you can set your label’s Anchor property to Left, Right and set AutoSize to true. This is conceptually similar to listening for the Panel’s SizeChanged event and updating the label’s MaximumSize to a new Size(((Control)sender).Size.Width, 0) as suggested by a previous answer. Every side listed in the Anchor property is, well, anchored to the containing Control’s respective inner side. So listing two opposite sides in Anchor effectively sets the control’s dimension. Anchoring to Left and Right sets the Control’s Width property and Anchoring to Top and Bottom would set its Height property.

这个解决方案，作为c#:

label.Anchor = AnchorStyles.Left | AnchorStyles.Right;
label.AutoSize = true;

设置AutoEllipsis属性为“TRUE”，AutoSize属性为“FALSE”。