How to hide TabPage from TabControl

No, this doesn't exist. You have to remove the tab and re-add it when you want it. Or use a different (3rd-party) tab control.

使用TabControl中的TabPages属性的方法

public TabControl.TabPageCollection TabPages { get; }

第一个直接移除实例

第二个根据下标移除

第三个根据TabPage的名字来移除

第三个方法中的 key指的是："The Name property corresponds to the key for a TabPage in the TabControl.TabPageCollection.

public partial class Form1 : Form
    {
        private TabControl tabControl;

        public Form1()
        {
            InitializeComponent();
            LoadTabControl();
            RemoveTabPges("tab");
        }

        private void LoadTabControl()
        {
            tabControl = new TabControl { Dock = DockStyle.Fill };
            Controls.Add(tabControl);
            LoadTabPages();
        }

        private void LoadTabPages()
        {
            if (tabControl == null)
            {
                throw new ArgumentNullException("tabControl", "tabControl can not be null");
            }
            TabPage tabPage;
            tabPage = new TabPage { Text = "tabPage1",Name = "tab"};
            tabControl.TabPages.Add(tabPage);
            tabPage = new TabPage() { Text = "tabPage2" ,Name = "tab"};
            tabControl.TabPages.Add(tabPage);

            TabControl.TabPageCollection tabPageCollection = tabControl.TabPages;
            foreach (var item in tabPageCollection)
            {
                Console.WriteLine();
            }
            if (tabPageCollection.ContainsKey("tab"))
            {
                Console.WriteLine("Exist");
            }
        }

        private void RemoveTabPges(string key)
        {
            try
            {
                if (tabControl != null)
                {
                    tabControl.TabPages.RemoveByKey(key);
                    tabControl.TabPages.RemoveByKey(key);
                    tabControl.TabPages.RemoveByKey(key);
                }
            }
            catch (Exception ex)
            {
                MessageBox.Show(ex.Message);
            }
        }
    }

需要注意的，根据key移除tabPage的时候，如果有重名的tabPage的话。

删除规则，类似于队列，先添加到TabControl的，先被删除

如果找不到匹配的话，也不会报异常