以赢取形式跨越多个组框的一个按钮

Question

我在winform中有多个组框，将根据树视图选择显示，我想在所有组中只使用一个按钮，我必须根据树视图选择调用唯一方法，如何这样做？

Answer 1

根据您选择的treeView节点执行某些操作，您可以在TreeView控件的AfterSelect事件上执行此操作（假设您有1个TreeView，4个GroupBox和一个名为 button1 的按钮）：

private void treeView1_AfterSelect(object sender, TreeViewEventArgs e)
        {
            //Get current selected node
            TreeNode treenode = treeView1.SelectedNode;

            //Position the button so it will be visible, change according needs
            button1.Location = new Point(20, 20);

            //I'm making the selection using "Text" property
            switch (treenode.Text)
            {
                case "1":
                    changeVisible(groupBox1); //Hide all GroupBoxes excep groupBox1
                    groupBox1.Controls.Add(button1);//Add the button1 to GroupBox1 Controls property

                    //You can execute a specific ethod for this case here.
                    //DoSomethingForTreeNode1();

                    break;
                case "2":
                    changeVisible(groupBox2);
                    groupBox2.Controls.Add(button1);
                    break;
                case "3":
                    changeVisible(groupBox3);
                    groupBox3.Controls.Add(button1);
                    break;
                case "4":
                    changeVisible(groupBox4);
                    groupBox4.Controls.Add(button1);
                    break;
            }
        }


        //The only purpouse of this method is to hide all but the desired GroupBox control
        private void changeVisible(GroupBox groupBox)
        {
            //Loop across all Controls in the current Form
            foreach (Control c in this.Controls)
            {
                if(c.GetType() == typeof(GroupBox))
                {
                    if(c.Equals(groupBox))
                    {
                        c.Visible = true;

                    }
                    else
                    {
                        c.Visible = false;
                    }

                }

            }
        }

希望有所帮助，