1、新建项目:WindowsFormsApplication4。
![VS 2010 C# winform:[9]设置起始窗体](https://exp-picture.cdn.bcebos.com/64a62a0f647814232de3398aaac2bbd6e0d0b2f2.jpg)
![VS 2010 C# winform:[9]设置起始窗体](https://exp-picture.cdn.bcebos.com/ba97ffd06de89a611c7f0e2745e8b004551badf2.jpg)
2、新建两个窗体:分别为FORM1(登录窗体),FORM2(显示窗体)。
![VS 2010 C# winform:[9]设置起始窗体](https://exp-picture.cdn.bcebos.com/cfa9ae04541bd10f527c422eba0e1799e82aa7f2.jpg)
![VS 2010 C# winform:[9]设置起始窗体](https://exp-picture.cdn.bcebos.com/16d8f72abab84240cda48ca07ac595ee40c19ef2.jpg)
![VS 2010 C# winform:[9]设置起始窗体](https://exp-picture.cdn.bcebos.com/f0848bee41c1b7270109493c1a2ca5cadde898f2.jpg)
3、创建Program.cs文件,如果已经存在,双击打开。
![VS 2010 C# winform:[9]设置起始窗体](https://exp-picture.cdn.bcebos.com/a48bc2e8904800fcc3add7bad42043715edb93f2.jpg)
4、更改项目启咿蛙匆盗动窗体。代码如下:static class Program { /// <summary> /// 应用程序的主入口点。 /// </summary&爿讥旌护gt; [STAThread] static void Main() { Application.EnableVisualStyles(); Application.SetCompatibleTextRenderingDefault(false); Application.Run(new Form1()); } }
![VS 2010 C# winform:[9]设置起始窗体](https://exp-picture.cdn.bcebos.com/3761a73acd8920c59b55c781568a59de440788f2.jpg)
5、如果切换到FORM2启动,则修改代码如下:static class Program{/// <summary>稆糨孝汶;/// 应用程序的主入口点。/// </summary>[STAThread]static void Main(){Application.EnableVisualStyles();Application.SetCompatibleTextRenderingDefault(false);Application.Run(new Form2());}}
![VS 2010 C# winform:[9]设置起始窗体](https://exp-picture.cdn.bcebos.com/d400248ca608a50f5ca61f3810cec7f88b77fff2.jpg)
6、运行效果如下:
![VS 2010 C# winform:[9]设置起始窗体](https://exp-picture.cdn.bcebos.com/e6ae36066b0192dde61af9471a87031c98c0f0f2.jpg)
![VS 2010 C# winform:[9]设置起始窗体](https://exp-picture.cdn.bcebos.com/256eb672941fbee4d480bfeac1237971ff1de7f2.jpg)