简单的例子,假设我正在创建一个像这样的标签:
Label label = new Label();
label.Text = "Hello" + "20.50";
label.Width = 250;
label.Height = 100;
panel1.Controls.Add(label);
我怎么能说“20.50”应出现在标签的最右边?
为了清楚起见,我在单词中做了一个小例子:
我怎么能实现这个目标?任何帮助表示赞赏!
答案 0 :(得分:2)
以下是您需要的自定义标签:
public class CustomLabel : Label
{
public CustomLabel()
{
TopLeftText = BottomRightText = "";
AutoSize = false;
}
public string TopLeftText {get;set;}
public string BottomRightText {get;set;}
protected override void OnPaint(PaintEventArgs e)
{
using (StringFormat sf = new StringFormat() { LineAlignment = StringAlignment.Near})
{
using(SolidBrush brush = new SolidBrush(ForeColor)){
e.Graphics.DrawString(TopLeftText, Font, brush, ClientRectangle, sf);
sf.LineAlignment = StringAlignment.Far;
sf.Alignment = StringAlignment.Far;
e.Graphics.DrawString(BottomRightText, Font, brush, ClientRectangle, sf);
}
}
}
}
//use it:
//first, set its size to what you want.
customLabel1.TopLeftText = house.Name;
customLabel2.BottomRightText = house.Number;
答案 1 :(得分:2)
使用Label控件没有内置支持。您需要从Label继承以创建自定义控件,然后自己编写绘图代码。
当然,您还需要一些方法来区分这两个字符串。应用于两个字符串时,+
符号是连接符号。这两个字符串由编译器连接在一起,所以你得到的就是:Hello20.50
。您将需要使用两个单独的属性,每个属性都有自己的字符串,或者在两个字符串之间插入某种分隔符,以后可以将它们分开。由于你已经在创建一个自定义控件类,我会使用单独的属性 - 更清晰的代码,更难以出错。
public class CornerLabel : Label
{
public string Text2 { get; set; }
public CornerLabel()
{
// This label doesn't support autosizing because the default autosize logic
// only knows about the primary caption, not the secondary one.
//
// You will either have to set its size manually, or override the
// GetPreferredSize function and write your own logic. That would not be
// hard to do: use TextRenderer.MeasureText to determine the space
// required for both of your strings.
this.AutoSize = false;
}
protected override void OnPaint(PaintEventArgs e)
{
// Call the base class to paint the regular caption in the top-left.
base.OnPaint(e);
// Paint the secondary caption in the bottom-right.
TextRenderer.DrawText(e.Graphics,
this.Text2,
this.Font,
this.ClientRectangle,
this.ForeColor,
TextFormatFlags.Bottom | TextFormatFlags.Right);
}
}
将此类添加到新文件,构建项目,然后将此控件放到表单上。确保同时设置Text
和Text2
属性,然后调整设计器中的控件大小并观察会发生什么!