VB.NET 多色标签

Question

我想在单标签 Controller 中为文本设置多种颜色

例如
label1.Text = " $ 480.00 "
我要的是性格$ $ 之后的红色和其他数字或字符蓝色。

我不能为数字和 $ 设置单独的标签.

Answer 1

标签本身无法做到这一点，因此您可以使用只读 RichTextBox 控件，也可以制作自己的标签控件。

最简单的形式:

Public Class ColorLabel
  Inherits Control

  Private _Money As Decimal = 0

  Property Money() As Decimal
    Get
      Return _Money
    End Get
    Set(ByVal value As Decimal)
      _Money = value
      Me.Invalidate()
    End Set
  End Property

  Protected Overrides Sub OnPaint(ByVal e As PaintEventArgs)
    MyBase.OnPaint(e)

    Dim moneyText As String = String.Format("{0:N2}", _Money)
    Dim dollarWidth As Integer = TextRenderer.MeasureText(e.Graphics, "$", Me.Font).Width
    Dim moneyWidth As Integer = TextRenderer.MeasureText(e.Graphics, moneyText, Me.Font).Width

    TextRenderer.DrawText(e.Graphics, "$", Me.Font, New Point(Me.ClientSize.Width - (dollarWidth + moneyWidth + 2), 2), Color.Red)
    TextRenderer.DrawText(e.Graphics, moneyText, Me.Font, New Point(Me.ClientSize.Width - (moneyWidth + 2), 2), Color.Blue)
  End Sub

End Class

结果: