转换Windows窗体到Windows Metro窗体

Question

我写了一个桌面应用程序在正常的Windows窗体中，它工作正常。后来我试图将它转换成Metro形式，因为它的现代风格。在控制名称的细微变化中，我使用了旧的标准形式的大部分代码。但是窗体大小调整功能块在启动应用程序时会抛出“System.NullReferenceException”。但在评论大小调整事件后，它可以正常工作。

private void Form1_Load(object sender, EventArgs e) 
{ 
    defaultSize = this.Size; 
    panel4Size = new Rectangle[] { new Rectangle(panel4.Location.X, panel4.Location.Y, panel4.Width, panel4.Height), new Rectangle(qusNo.Location.X, qusNo.Location.Y, qusNo.Width, qusNo.Height), new Rectangle(element1.Location.X, element1.Location.Y, element1.Width, element1.Height), new Rectangle(element2.Location.X, element2.Location.Y, element2.Width, element2.Height), new Rectangle(operation.Location.X, operation.Location.Y, operation.Width, operation.Height), new Rectangle(line.Location.X, line.Location.Y, line.Width, line.Height), new Rectangle(nextQus.Location.X, nextQus.Location.Y, nextQus.Width, nextQus.Height), new Rectangle(flp1.Location.X, flp1.Location.Y, flp1.Width, flp1.Height), new Rectangle(flp2.Location.X, flp2.Location.Y, flp2.Width, flp2.Height), new Rectangle(opt1.Location.X, opt1.Location.Y, opt1.Width, opt1.Height), new Rectangle(opt2.Location.X, opt2.Location.Y, opt2.Width, opt2.Height), new Rectangle(opt3.Location.X, opt3.Location.Y, opt3.Width, opt3.Height), new Rectangle(opt4.Location.X, opt4.Location.Y, opt4.Width, opt4.Height), new Rectangle(opt5.Location.X, opt5.Location.Y, opt5.Width, opt5.Height), new Rectangle(opt6.Location.X, opt6.Location.Y, opt6.Width, opt6.Height), new Rectangle(dopt1.Location.X, dopt1.Location.Y, dopt1.Width, dopt1.Height), new Rectangle(dopt2.Location.X, dopt2.Location.Y, dopt2.Width, dopt2.Height), new Rectangle(dopt3.Location.X, dopt3.Location.Y, dopt3.Width, dopt3.Height), new Rectangle(dopt4.Location.X, dopt4.Location.Y, dopt4.Width, dopt4.Height), new Rectangle(dopt5.Location.X, dopt5.Location.Y, dopt5.Width, dopt5.Height), new Rectangle(dopt6.Location.X, dopt6.Location.Y, dopt6.Width, dopt6.Height), new Rectangle(LaBackBt.Location.X, LaBackBt.Location.Y, LaBackBt.Width, LaBackBt.Height), new Rectangle(LaFinishBt.Location.X, LaFinishBt.Location.Y, LaFinishBt.Width, LaFinishBt.Height), new Rectangle(results.Location.X, results.Location.Y, results.Width, results.Height) }; 
    panel2Size = new Rectangle[] { new Rectangle(panel2.Location.X, panel2.Location.Y, panel2.Width, panel2.Height), new Rectangle(Easy.Location.X, Easy.Location.Y, Easy.Width, Easy.Height), new Rectangle(Hard.Location.X, Hard.Location.Y, Hard.Width, Hard.Height), new Rectangle(MdBackBt.Location.X, MdBackBt.Location.Y, MdBackBt.Width, MdBackBt.Height), new Rectangle(eelem1.Location.X, eelem1.Location.Y, eelem1.Width, eelem1.Height), new Rectangle(eelem2.Location.X, eelem2.Location.Y, eelem2.Width, eelem2.Height), new Rectangle(eelem3.Location.X, eelem3.Location.Y, eelem3.Width, eelem3.Height), new Rectangle(eelem4.Location.X, eelem4.Location.Y, eelem4.Width, eelem4.Height), new Rectangle(eelem5.Location.X, eelem5.Location.Y, eelem5.Width, eelem5.Height), new Rectangle(flp3.Location.X, flp3.Location.Y, flp3.Width, flp3.Height), new Rectangle(flp4.Location.X, flp4.Location.Y, flp4.Width, flp4.Height), new Rectangle(flp5.Location.X, flp5.Location.Y, flp5.Width, flp5.Height), new Rectangle(flp6.Location.X, flp6.Location.Y, flp6.Width, flp6.Height) }; 
    panel1Size = new Rectangle[] { new Rectangle(panel1.Location.X, panel1.Location.Y, panel1.Width, panel1.Height), new Rectangle(label1.Location.X, label1.Location.Y, label1.Width, label1.Height), new Rectangle(listView3.Location.X, listView3.Location.Y, listView3.Width, listView3.Height), new Rectangle(HmAdd.Location.X, HmAdd.Location.Y, HmAdd.Width, HmAdd.Height), new Rectangle(HmSub.Location.X, HmSub.Location.Y, HmSub.Width, HmSub.Height), new Rectangle(HmMul.Location.X, HmMul.Location.Y, HmMul.Width, HmMul.Height), new Rectangle(HmDiv.Location.X, HmDiv.Location.Y, HmDiv.Width, HmDiv.Height) }; 
} 

private void reziseChildControl() 
{ 
    Control[] controlP4 = new Control[] { panel4, qusNo, element1, element2, operation, line, nextQus, flp1, flp2, opt1, opt2, opt3, opt4, opt5, opt6, dopt1, dopt2, dopt3, dopt4, dopt5, dopt6, LaBackBt, LaFinishBt, results }; 
    Control[] controlP2 = new Control[] { panel2, Easy, Hard, MdBackBt, eelem1, eelem2, eelem3, eelem4, eelem5, flp3, flp4, flp5, flp6 }; 
    Control[] controlP1 = new Control[] { panel1, label1, listView3, HmAdd, HmSub, HmMul, HmDiv}; 
    for (int j = 0; j < controlP4.Length; j++) 
    { 
     resizeControls(panel4Size[j], controlP4[j]); 
    } 
    for (int j = 0; j < controlP2.Length; j++) 
    { 
     resizeControls(panel2Size[j], controlP2[j]); 
    } 
    for (int j = 0; j < controlP1.Length; j++) 
    { 
     resizeControls(panel1Size[j], controlP1[j]); 
    } 

    } 
    private void Form1_Resize(object sender, EventArgs e) 
    { 
     reziseChildControl(); 
    } 

    private void resizeControls(Rectangle originalContrl, Control control) 
    { 
     float xRatio = (float)(this.Width)/(float)(defaultSize.Width); 
     float yRatio = (float)(this.Height)/(float)(defaultSize.Height); 
     int newX = (int)(originalContrl.X * xRatio); 
     int newY = (int)(originalContrl.Y * yRatio); 
     int newWidth = (int)(originalContrl.Width * xRatio); 
     int newHeight = (int)(originalContrl.Height * yRatio); 
     control.Location = new Point(newX, newY); 
     control.Size = new Size(newWidth, newHeight); 
    } 
} 

更新：本NullReferenceException异常投掷因为Form1_Resize事件Form1_Load事件发生之前。在更改窗口布局（通过拖动或最大化窗口大小）之前，不应调用Form1_Resize事件。但是在Form1完全引导之前，应用程序启动时会自动调整Resize事件。在检查Form1属性时，我无法找到相关的属性，这可能是启动时调用resize事件的原因。尝试为form1布局属性选择不同的值，除了WindowState属性以外没有什么变化。即使WindowState属性的Resize事件在启动时调用的值也不同。

Answer 1

它很容易看到什么值会空与调试器是不设置白衣的是要空的任何初始值当您创建panelsize的问题，要 看到这些完整的指南和示例构建Metro风格应用程序

https://msdn.microsoft.com/en-us/library/windows/apps/br211380

希望有帮助！

Answer 2

添加了一个简单的条件语句来调整代码大小。那之后它运行良好。但是无法确切知道在启动时调用form_resize事件的原因。可能是它在地铁框架中的增加，但不能确定。

谢谢