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你好，这可能是一个愚蠢的问题，但我无法在这里找出问题..这是我用一个块填写表格的代码：

        private void drawBackground()
    {
        Graphics g = genPan.CreateGraphics();
        Image Block = Image.FromFile(@"C:\Users\Administrator\Desktop\movment V1\movment V1\images\BrownBlock.png");
        float recWidth = Block.Width; 
        // rectangle width didnt change the name from previous code, it's picture width.

        float recHeight = Block.Height;
        // rectangle Heightdidnt change the name from previous code, it's picture Height.

        float WinWidth = genPan.Width; // genPan is a panel that docked to the form

        float WinHeight = genPan.Height;

        float curWidth = 0; //indicates where the next block will be placed int the X axis
        float curHeight = 0;//indicates where the next block will be placed int the Y axis

        while ((curHeight + recHeight) <= WinHeight)
        {
            if (curWidth >= WinWidth / 3 || curWidth <= WinWidth / 1.5 ||
                curHeight >= WinHeight / 3 || curHeight <= WinHeight / 1.5)
            {
                g.DrawImage(Block, curWidth, curHeight, recWidth , recHeight );
            }
            curWidth += recWidth;
            if ((WinWidth - curWidth) < recWidth)
            {
                curWidth = 0;
                curHeight += 50;
            }
        }
    }

如果我通过一个按钮启动这个函数，它会工作得很好。但是如果我在 InitializeComponent(); 之后启动函数 构造函数或 FORM 显示事件中的方法，当按钮仍在表单上时，它将执行 func 但是块背景将不可见，但灰色将是。但如果我删除按钮，背景将可见。=\

我不明白为什么会发生这种情况，如何解决它以及我做错了什么..谁能解释一下..？

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