通过字符串反射调用窗体

 

今天查阅了网上一堆通过字符串反射调用窗体的源码，也写了一个。自认为还不错。

 

      /// <summary>
        /// 反射打开窗口，如果没有主窗体，则会以模式显示。
        /// </summary>
        /// <param name="formName">窗口名称</param>
        /// <param name="MDIForm">主窗体</param>
        private static void CreateForm(string formName, MDIMain MDIForm, string formText, params object[] CreateArgs)
        {
            MDIForm.Cursor = Cursors.WaitCursor;
            try
            {
                Type mfromType=null;
                try
                {
                    mfromType = Type.GetType(formName,true,false);
                }
                catch (Exception ex)
                {
                    throw new Exception(string.Format("创建窗口类时出错！\n类全名：{0}", formName), ex);
                }
                Form NewForm = null;
                foreach (Form formItem in Application.OpenForms)
                {
                    if (formItem.GetType() == mfromType)
                    {
                        if (formItem.Text == formText)
                        {
                            NewForm = formItem;
                            break;
                        }
                    }
                }
                if (NewForm != null)
                {
                    if (NewForm.WindowState == FormWindowState.Maximized)
                        NewForm.WindowState = FormWindowState.Normal;
                    NewForm.Activate();
                }
                else
                {
                    try
                    {
                        NewForm = (Form)Activator.CreateInstance(mfromType, CreateArgs);
                    }
                    catch (Exception ex)
                    {
                        throw new Exception(string.Format("窗口加载时出错。\n类全名：{0}\n错误描述：{1}", formName, ex.Message), ex);
                    }
                    try
                    {
                        NewForm.Text = formText;
                        if (MDIForm == null)
                        {
                            MDIForm.Cursor = Cursors.Default;
                            NewForm.ShowDialog();
                        }
                        else
                        {
                            NewForm.MdiParent = MDIForm;
                            NewForm.Dock = DockStyle.Fill;
                            NewForm.Show();
                            MDIForm.Cursor = Cursors.Default;
                        }
                    }
                    catch (Exception ex)
                    {
                        throw new Exception(string.Format("窗口打开时出错\n类全名：{0}\n窗口名：{1}\n错误描述：{2}", formName, NewForm.Name, ex.Message), ex);
                    }
                }
            }
            catch (Exception ex)
            {
                MyRecorder.Say(ex);
            }
            finally
            {
                MDIForm.Cursor = Cursors.Default;
            }
        }