Question

我在c形式上动态添加了复选框.... 并且在加载表单时它们被禁用...
默认情况下，每个复选框都有红色...我已经以编程方式将其指定为黑色...
但是当表格加载时它是红色的......我不知道为什么会发生这种情况......

private void Form2_Load(object sender, EventArgs e)
{
    for (int i = 0; i < list.Count; i++)
    {
         CheckBox c = new CheckBox();
         c.Text = i.ToString();
         c.Width = 120;
         flowLayoutPanel1.Controls.Add(c);
         c.ForeColor = Color.Black;
    }
    flowLayoutPanel1.Enabled = false;
}

只有在启用flowLayoutPanel后才会出现黑色....
即使加载表单，我也希望复选框有黑色...

Answer 1

这是一种方法。将您的代码更改为：

for (int i = 0; i < list.Count; i++)
{
    CheckBox c = new CheckBox();
    c.Text = "";
    c.Tag = i.ToString();
    c.Width = 120;
    flowLayoutPanel1.Controls.Add(c);
    c.Paint += new PaintEventHandler(c_Paint);

}
    flowLayoutPanel1.Enabled = false;

在c_Paint方法中，您可以绘制控件的文本（保存在Tag属性中）

void c_Paint(object sender, PaintEventArgs e)
{
    Control c = sender as Control;
    if (c != null)
    {
        string text = c.Tag.ToString();
        e.Graphics.SmoothingMode = 
            System.Drawing.Drawing2D.SmoothingMode.AntiAlias;
        RectangleF rect = new RectangleF(
            new PointF(19, 5), 
            e.Graphics.DrawString(text, this.Font, Brushes.Black, new PointF(19, 5));
    }
}

Answer 2

你应该创建一个函数来执行它并在表单构造函数中的InitializeComponent();之后调用它。您也应该首先启用面板。

public partial class YourForm: Form
    {
        public YourForm()
        {
            InitializeComponent();
           // put your function here
        }

复选框颜色未设置..如所需

2 个答案: