Question

我希望从基本面板继承的面板无论在何处使用都具有固定的BackColor。我的基本面板如下所示：

public class MyPanel
{
    public override Color BackColor
    {
        get
        {
            return base.BackColor;
        }
        set
        {
            base.BackColor = Color.Red;
        }
    }
}

BackColor未在示例表单的Designer.cs文件中设置：

this.sampleControl.Font = new System.Drawing.Font("Tahoma", 8.25F,
    System.Drawing.FontStyle.Regular, 
    System.Drawing.GraphicsUnit.Point, ((byte)(0)));
this.sampleControl.Location = new System.Drawing.Point(0, 0);
this.sampleControl.Margin = new System.Windows.Forms.Padding(5);
this.sampleControl.Name = "sampleControl";
this.sampleControl.Padding = new System.Windows.Forms.Padding(2, 0, 2, 2);
this.sampleControl.Size = new System.Drawing.Size(230, 100);
this.sampleControl.TabIndex = 1;

实际上在任何地方都没有颜色设置，所以我想它以某种方式从放置它的面板中获取属性。我该如何防止这种情况？

Answer 1

怎么样：

public class MyPanel : Panel
{
    private Color backColor = Color.Red;

    public MyPanel()
    {
        // Set the color once
        this.BackColor = backColor;
    }

    public override Color BackColor
    {
        get
        {
            return base.BackColor;
        }
        set
        {
            base.BackColor = backColor;
        }
    }
}

Answer 2

只需在MyPanel构造函数中设置它。

BackColor=Color.Red;

除非您想阻止他人更改，否则您不需要override。

如何防止控件的BackColor发生变化？

2 个答案: