1、类库项目引用System.Windows.Forms并添加引用后，才可创建窗体。

2、控制台应用程序调用中间库（DLL）中的方法创建窗体；中间类库使用反射下的Assembly加载包含窗体的类库及创建实例。

注意：1）创建实例时，参数为窗体类的全名（命名空间+类名）。

　　   2）返回值是Object类型，需转化为Form类型。

         3）exe(控制台程序)、中间类库（dll）、窗体所在类库（dll）在同一目录下。

         4）Load（空间名，窗体类全名），LoadFrom（*.dll,窗体类全名）

 

具体代码如下：

窗体类库：

using System;using System.Collections.Generic;using System.ComponentModel;using System.Data;using System.Drawing;using System.Linq;using System.Text;using System.Threading.Tasks;using System.Windows.Forms;namespace TestForm{    public partial class Test : Form    {        public Test()        {            InitializeComponent();        }    }}

 

中间类库：

 

using System;using System.Collections.Generic;using System.Linq;using System.Reflection;using System.Text;using System.Threading.Tasks;using System.Windows.Forms;namespace Anxin.Factory{    public class FormFactory    {        /// 
        /// 创建窗体        /// 
        ///         /// 
             public static Form CreateForm(string val_classFullName)        {            string nameSpace = val_classFullName.Substring(0,val_classFullName.LastIndexOf('.'));            return (Form)Assembly.Load(nameSpace).CreateInstance(val_classFullName);        }        /// 
        /// 创建窗体        /// 
        /// 命名空间        /// 窗体类名        /// 
             public static Form CreateForm(string val_nameSpace, string val_className)        {            //string className = val_className;  //仅使用类名创建示例失败。            string classFullName = string.Format("{0}.{1}",val_nameSpace,val_className);                //MessageBox.Show(Assembly.GetExecutingAssembly().Location);            return (Form)Assembly.Load(val_nameSpace).CreateInstance(classFullName);        }        public static Form CreateForm(string val_formAssemblyFile, string val_formFullName, Object[] val_formArgs)        {            return CreateForm(val_formAssemblyFile, val_formFullName, val_formArgs, null);        }        public static Form CreateForm(string val_formAssemblyFile,string val_formFullName,Object[] val_formArgs,string val_formText)        {            Form form;            string assemblyPath = System.IO.Path.GetDirectoryName(System.Reflection.Assembly.GetExecutingAssembly().Location);            string assemblyFullName = assemblyPath + val_formAssemblyFile;            if (!assemblyPath.EndsWith("\\"))            {                assemblyFullName = assemblyPath + "\\" + val_formAssemblyFile;            }            //MessageBox.Show(assemblyFullName);            Assembly formAssembly = Assembly.LoadFrom(assemblyFullName);            form = formAssembly.CreateInstance(val_formFullName) as Form;            if(null == form)            {                string strError = string.Format("创建窗体失败!\n程序集{0}\n窗体类名称{1}",                        val_formAssemblyFile,                        val_formFullName);                if (!string.IsNullOrEmpty(val_formText))                {                    strError += "窗体标题" + val_formText;                }                throw new Exception(strError);            }            if (!string.IsNullOrEmpty(val_formText))            {                form.Text = val_formText;            }            return form;        }    }}

 

控制台程序：

 

using System;using System.Collections.Generic;using System.Linq;using System.Text;using System.Threading.Tasks;using Anxin.Factory;using System.Windows.Forms;namespace TestFactory{    class Program    {        static void Main(string[] args)        {            string nameSpace = "TestForm";            string className = "Test";   //窗体类名            //string className = "Example";  //窗体文件名 （报错）            Form testForm = FormFactory.CreateForm(nameSpace,className);            string classFullName = nameSpace + "." + className;            testForm = FormFactory.CreateForm(classFullName);            string dllName = "TestForm.dll";            //string classFullName = "TestForm.Test";            testForm = FormFactory.CreateForm(dllName,classFullName,null);            string formText = "OK 加油！";            testForm = FormFactory.CreateForm(dllName, classFullName, null,formText);            if (null != testForm)            {                testForm.ShowDialog();            }            else            {                Console.WriteLine("通过调用Dll,创建窗体失败！\n");                //使用窗体文件名创建时失败！            }        }    }}