• <legend id='dAFlb'><style id='dAFlb'><dir id='dAFlb'><q id='dAFlb'></q></dir></style></legend>

    <small id='dAFlb'></small><noframes id='dAFlb'>

    <i id='dAFlb'><tr id='dAFlb'><dt id='dAFlb'><q id='dAFlb'><span id='dAFlb'><b id='dAFlb'><form id='dAFlb'><ins id='dAFlb'></ins><ul id='dAFlb'></ul><sub id='dAFlb'></sub></form><legend id='dAFlb'></legend><bdo id='dAFlb'><pre id='dAFlb'><center id='dAFlb'></center></pre></bdo></b><th id='dAFlb'></th></span></q></dt></tr></i><div id='dAFlb'><tfoot id='dAFlb'></tfoot><dl id='dAFlb'><fieldset id='dAFlb'></fieldset></dl></div>

      • <bdo id='dAFlb'></bdo><ul id='dAFlb'></ul>

      <tfoot id='dAFlb'></tfoot>

        如何制作单个实例表单(不是应用程序)?

        How can I make a single instance form (not application)?(如何制作单个实例表单(不是应用程序)?)
        <legend id='xTxmh'><style id='xTxmh'><dir id='xTxmh'><q id='xTxmh'></q></dir></style></legend>

        <small id='xTxmh'></small><noframes id='xTxmh'>

          <tbody id='xTxmh'></tbody>
          • <bdo id='xTxmh'></bdo><ul id='xTxmh'></ul>
              <tfoot id='xTxmh'></tfoot>

                <i id='xTxmh'><tr id='xTxmh'><dt id='xTxmh'><q id='xTxmh'><span id='xTxmh'><b id='xTxmh'><form id='xTxmh'><ins id='xTxmh'></ins><ul id='xTxmh'></ul><sub id='xTxmh'></sub></form><legend id='xTxmh'></legend><bdo id='xTxmh'><pre id='xTxmh'><center id='xTxmh'></center></pre></bdo></b><th id='xTxmh'></th></span></q></dt></tr></i><div id='xTxmh'><tfoot id='xTxmh'></tfoot><dl id='xTxmh'><fieldset id='xTxmh'></fieldset></dl></div>

                1. 本文介绍了如何制作单个实例表单(不是应用程序)?的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着跟版网的小编来一起学习吧!

                  问题描述

                  在我的 C# 应用程序中,我有一个可以从菜单命令打开的选项对话框.

                  In my C# application I have an option dialog that can be opened from a menu command.

                  我想确保选项对话框只有一个实例(用户不能在给定时间打开多个选项窗口)而不使其成为模态.

                  I want to ensure that the option dialog have only one instance (user cannot open more than one option window at a given time) without making it modal.

                  此外,如果用户已经打开了这个窗口,并且他在菜单项中单击以再次打开它,则应用程序只会使已经可见的表单成为最顶部的窗口.

                  Also if the user already have this window opened, and he clicks in the menu item to open it again, the app just makes the already visible form became the top most window.

                  谁能指点我如何完成这些任务?

                  Can anyone point me directions on how accomplish these tasks?

                  非常感谢.

                  推荐答案

                  你需要这个表单作为属性

                  You will need this form as property

                  Form1 myForm = null;
                  private void Form1_FormClosed(object sender, FormClosedEventArgs e)
                  {
                      myForm = null;
                  }
                  
                  private void ShowForm()
                  {
                      if (myForm != null)
                      {
                          myForm.BringToFront();
                      }
                      else
                      {
                          myForm = new Form1;
                          myForm.Show();
                      }
                  }
                  

                  这篇关于如何制作单个实例表单(不是应用程序)?的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持跟版网!

                  本站部分内容来源互联网,如果有图片或者内容侵犯了您的权益,请联系我们,我们会在确认后第一时间进行删除!

                  相关文档推荐

                  Populate ListBox with a IEnumrable on another thread (winforms)(在另一个线程(winforms)上使用 IEnumrable 填充 ListBox)
                  listbox selected item give me quot; System.Data.DataRowViewquot; , C# winforms(列表框选择的项目给我quot;System.Data.DataRowView, C# Winforms)
                  Cannot remove items from ListBox(无法从列表框中删除项目)
                  Preventing ListBox scrolling to top when updated(更新时防止列表框滚动到顶部)
                  Drag and drop from list to canvas on windows phone with MVVM(使用 MVVM 在 Windows 手机上从列表拖放到画布)
                  Deselection on a WPF listbox with extended selection mode(具有扩展选择模式的 WPF 列表框上的取消选择)
                  1. <i id='hbqkP'><tr id='hbqkP'><dt id='hbqkP'><q id='hbqkP'><span id='hbqkP'><b id='hbqkP'><form id='hbqkP'><ins id='hbqkP'></ins><ul id='hbqkP'></ul><sub id='hbqkP'></sub></form><legend id='hbqkP'></legend><bdo id='hbqkP'><pre id='hbqkP'><center id='hbqkP'></center></pre></bdo></b><th id='hbqkP'></th></span></q></dt></tr></i><div id='hbqkP'><tfoot id='hbqkP'></tfoot><dl id='hbqkP'><fieldset id='hbqkP'></fieldset></dl></div>
                      <bdo id='hbqkP'></bdo><ul id='hbqkP'></ul>

                        <tbody id='hbqkP'></tbody>
                      • <small id='hbqkP'></small><noframes id='hbqkP'>

                        • <tfoot id='hbqkP'></tfoot>

                            <legend id='hbqkP'><style id='hbqkP'><dir id='hbqkP'><q id='hbqkP'></q></dir></style></legend>