winform关于窗口改变大小事件的问题

写了个软件是动态分布按钮的，如果窗口宽度够的话，我就排一排，不够的话就排2排，以此类推，然后我的计划是窗口大小改变的时候，把之前的按钮清掉, 重新布局，但是这时候布局就乱了，还有重复的按钮
如图所示:
正常的:

大小改变后就成了这样:

删除的代码是这样的:

         public void SortTab()
        {
            List<TabEntity> list = tab_ctrl.GetTabList();
            foreach (Control c in this.TabPanel.Controls)
            {
                var str = c.Name.Substring(0, 3);
                if(str == "tab")
                {
                    c.Dispose();
                }
            }

           CreateTabBtn();
        }

重新布局的代码是这样的:

         private void CreateTabBtn()
        {
            Controls.TabControl tab_ctrl = new Controls.TabControl();
            List<TabEntity> list = tab_ctrl.GetTabList();
            var x = 5;
            var y = 5;
            foreach (TabEntity tab in list)
            {
                Button btn = new Button();
                this.TabPanel.Controls.Add(btn);
                btn.Name = "tab" + tab.Name;
                btn.Text = tab.Name;
                btn.Width = 120;
                btn.Height = 30;
                btn.Location = new Point(x, y);
                x = x + 125;
                if (x + 125 > this.TabPanel.Width)
                {
                    x = 5;
                    y = y + 35;
                }

                btn.FlatStyle = FlatStyle.Popup;
                btn.BackColor = Color.SkyBlue;
                btn.Font = new System.Drawing.Font("微软雅黑", 12, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((byte)(134)));
                btn.ForeColor = System.Drawing.Color.White;
            }

            this.AddTab.Location = new Point(x, y);
        }

                        private void MainForm_Resize(object sender, EventArgs e)
        {
            SortTab();
        }

数据是没有重复的,

需要设置相对位置才行

c.Dispose(); 之前要先在父控件上移除。

public void SortTab()
{
List list = tab_ctrl.GetTabList();
foreach (Control c in this.TabPanel.Controls)
{
var str = c.Name.Substring(0, 3);
if(str == "tab")
{
this.TabPanel.Controls.Remove(c);

                c.Dispose();
            }
        }

       CreateTabBtn();
    }