如何在渐变背景面板上设置标签backColor

Question

面板控件的背景颜色设置为颜色渐变。

我想设置相同的面板背景色和标签包颜色

我的代码与下面相同

private void panel1_Paint(object sender, PaintEventArgs e)
        {
            Graphics g = panel1.CreateGraphics();
            LinearGradientBrush lgb = new LinearGradientBrush(new Rectangle(0, 0, this.panel1.Width, this.panel1.Height), Color.Black, Color.Black, LinearGradientMode.Horizontal);
            ColorBlend cb = new ColorBlend();
            cb.Colors = new Color[] { Color.Black, Color.White };
            cb.Positions = new Single[] { 0.0F, 1.0F };
            lgb.InterpolationColors = cb;

            g.FillRectangle(lgb, new Rectangle(0, 0, this.panel1.Width, this.panel1.Height));
            label1.Parent = panel1;
            label1.BackColor = Color.Transparent;
            lgb.Dispose();
            g.Dispose();

        }

哪一部分错了？

Answer 1

下面一行有问题：

Graphics g = panel1.CreateGraphics();

改为：

Graphics g = e.Graphics;

您还可以将以下代码放入构造函数中（以避免在面板为 Invalidated 时重新分配）：

label1.Parent = panel1;
label1.BackColor = Color.Transparent;

如何在渐变背景面板上设置标签backColor

How to set label backColor on gradient background panel

c#

label

panel