如何删除标签控件中的填充？

Question

How can totally remove padding in Label control?

I tried to set Margin and Padding properties to zero, but still I have few pixels of margin inside Label.

I want zero or very small (less than half of "space" character width) left and right padding in Windows Forms.

I need this for label placed very close to other, but when I place labels very close - background of label placed on top covers other label text. I use right align on one label, left on other label and it looks like this:

I have this problem regardless of AutoSize property. There is always too much padding on right side of control.

In WPF it works as I want, but I have to use Windows Forms.

I can't use TextBox control (where it works as I want), because it does not support transparent background.

Answer 1

You can totally remove padding if you draw the text yourself. Here is a simple custom label control (RightAlignment property changes text alignment)

public partial class NoPaddingLabel : Label
{
    private TextFormatFlags flags = TextFormatFlags.SingleLine | TextFormatFlags.VerticalCenter | TextFormatFlags.Left | TextFormatFlags.NoPadding;

    public bool RightAlignment
    {
        get
        {
            return (flags & TextFormatFlags.Right) == TextFormatFlags.Right;
        }
        set
        {
            if (value)
            {
                flags = flags |= TextFormatFlags.Right;
            }
            else
            {
                flags = flags &= ~TextFormatFlags.Right;
            }
            Invalidate();
        }
    }


    public NoPaddingLabel()
    {
        InitializeComponent();
    }

    protected override void OnPaint(PaintEventArgs e)
    {
        TextRenderer.DrawText(e.Graphics, this.Text, this.Font, ClientRectangle, this.ForeColor, Color.Transparent, flags);
    }

}

Answer 2

尝试将UseCompatibleTextRendering属性设置为true 。

Answer 3

I used a Canvas layout to solve this:

<Canvas>
   <Label Canvas.Left="35" Canvas.Top="0" Content="Latitude:" HorizontalAlignment="Right" Foreground="red"/>
   <Label Canvas.Left="90" Canvas.Top="0" Content="nn.nnnnnn" Foreground="red" />
   <Label Canvas.Left="25" Canvas.Top="12"  Content="Longitude:" HorizontalAlignment="Right" Foreground="red"/>
   <Label Canvas.Left="90" Canvas.Top="12"  Content="nn.nnnnnn" Foreground="red" />
   <Label Canvas.Left="40" Canvas.Top="26"  Content="Date" HorizontalAlignment="Center" Foreground="Blue"/>
   <Label Canvas.Left="100" Canvas.Top="26"  Content="Time" HorizontalAlignment="Center" Foreground="Blue"/>
</Canvas>