如何在C＃中使用numericupdown动态更改标签大小

Question

我想知道如何使用C＃在数字上下列表中使用当前值更改标签大小

Answer 1

Label sample;
public Form1()
{
   InitializeComponent();
   sample = new Label();
   sample.Location = new Point(numericUpDown1.Left, numericUpDown1.Bottom);
   sample.Size = numericUpDown1.Size;
   sample.BackColor = Color.Blue;
   Controls.Add(sample);
   numericUpDown1.Value = sample.Width;
}

private void numericUpDown1_ValueChanged(object sender, EventArgs e)
{
   sample.Width = (int)numericUpDown1.Value;
}

如果您指的是字体大小，那么这是另一个示例：

Label sample;
Font sampleFont;
public Form1()
{
   InitializeComponent();
   sample = new Label();
   sample.Text = "Sample Text";
   sample.AutoSize = true;
   sample.Location = new Point(numericUpDown1.Left, numericUpDown1.Bottom);
   sample.Size = numericUpDown1.Size;
   sampleFont = (Font)Font.Clone();
   sample.Font = sampleFont;
   Controls.Add(sample);
   numericUpDown1.Value = (decimal)sampleFont.Size;
}

private void numericUpDown1_ValueChanged(object sender, EventArgs e)
{
   Font newFont = new Font(sampleFont.FontFamily, (float)numericUpDown1.Value);
   sample.Font = newFont;
   sampleFont.Dispose();
   sampleFont = newFont;
}

Answer 2

默认情况下，标签的AutoSize属性设置为true 。 如果将其显式更改为false ，则可以控制大小。