C# 窗体 切换、重复显示等遗留问题解决（第五天）

一、解决同一窗体多次点击重复显示BUG

（1）点击弹出学校窗体

        #region 弹出学校窗体               
        /// <summary>
        /// 弹出学校窗体
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void SchoolToolStripMenuItem_Click(object sender, EventArgs e)
        {
            //点击后显示SchoolTan这个弹窗
            SchoolTan schooltanchuang=new SchoolTan();
                   
            //this.IsMdiContainer = true;
            //WFromMain mainForm = new WFromMain();
            //schooltanchuang.MdiParent = this;
            /*
             *  方法：明确父子关系：
                    son form = new Form();
                    form.MdiParent = this(father);
                    form.show();
                    前提是先要设置father窗体
                    isMdiContainer = true; 
             * **/
            if (this.MdiChildren==null||this.MdiChildren.Length==0)
            {
                schooltanchuang.Show();
                //让子窗体不超出父窗体界限,给子窗体指定父窗体
                schooltanchuang.MdiParent = this;
                return;
            }
            bool flag = false;
            foreach (var item in this.MdiChildren)
            {
                if (item.Text == schooltanchuang.Text)
                {
                    schooltanchuang = item as SchoolTan;
                    schooltanchuang.Activate();
                    flag = true;
                    break;
                }
            }
            if (!flag)
            {
                schooltanchuang.Show();
                //给子窗体指定父窗体
                schooltanchuang.MdiParent = this;
            }
        }
        #endregion

（2）弹出商会组织窗体

 #region 弹出商会组织窗体               
        /// <summary>
        /// 弹出商会组织窗体
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void ShanghuiToolStripMenuItem_Click(object sender, EventArgs e)
        {
            //点击弹出重庆商会窗体
            ShangHui shang = new ShangHui();
            //shang.Show();
            //shang.MdiParent = this;
            if (this.MdiChildren == null || this.MdiChildren.Length == 0)
            {
                shang.Show();
                //让子窗体不超出父窗体界限,给子窗体指定父窗体
                shang.MdiParent = this;
                return;
            }
            bool flag = false;
            foreach (var item in this.MdiChildren)
            {
                if (item.Text == shang.Text)
                {
                    shang = item as ShangHui;
                    shang.Activate();
                    flag = true;
                    break;
                }
            }
            if (!flag)
            {
                shang.Show();
                //给子窗体指定父窗体
                shang.MdiParent = this;
            }
        }
        #endregion

（3）点击弹出公益组织窗体

 #region 点击弹出公益组织窗体               
        /// <summary>
        /// 点击弹出公益组织窗体
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void 公益组织ToolStripMenuItem_Click(object sender, EventArgs e)
        {
            //点击弹出公益组织窗体
            GongYi gongyi = new GongYi();
            //gongyi.Show();
            //gongyi.MdiParent = this;
            if (this.MdiChildren == null || this.MdiChildren.Length == 0)
            {
                gongyi.Show();
                //让子窗体不超出父窗体界限,给子窗体指定父窗体
                gongyi.MdiParent = this;
                return;
            }
            bool flag = false;
            foreach (var item in this.MdiChildren)
            {
                if (item.Text == gongyi.Text)
                {
                    gongyi = item as GongYi;
                    gongyi.Activate();
                    flag = true;
                    break;
                }
            }
            if (!flag)
            {
                gongyi.Show();
                //给子窗体指定父窗体
                gongyi.MdiParent = this;
            }
        }
        #endregion      

二、关闭所有的运行环境操作

      /// <summary>
        /// 关闭运行环境
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void 关闭全部窗体ToolStripMenuItem_Click(object sender, EventArgs e)
        {
            //关闭运行环境
            Environment.Exit(0);
        }    

三、右键菜单关闭所有弹窗（右键菜单有多个选项时的情况）

private void CloseAllToolStripMenuItem_Click(object sender, EventArgs e)
        {
 
             int len = this.MdiChildren.Length;
             for (int i = 0; i <len ; i++)
             {
                 Form frm = this.MdiChildren[0];
                 frm.Close();
             }
         }

 四、获取radiobatton的text值的方法

 private void btnNanNv_Click(object sender, EventArgs e)
        {
            string checkedRBName = "";

            //取得选中单选按钮的名称  
            if (radioButtonMan.Checked)
            {
                checkedRBName = radioButtonMan.Name;
                string textNan = radioButtonMan.Text;
                MessageBox.Show("这是选中了"+textNan);
            }
            else if (radioButtonGirl.Checked)
            {
                checkedRBName = radioButtonGirl.Name;
                string textNv = radioButtonGirl.Text;
                MessageBox.Show("这是选中了"+ textNv);
                //获得和radioButton按钮对应标签的内容，用的是 radioButton2.Text属性;  

            }
            
            MessageBox.Show(checkedRBName + " was checked."); 
        }