我整理了一些代码,在Winforms应用程序中添加了一个新选项卡。新标签页已插入,但我的页面现在空白。我尝试使用refresh命令,但似乎无法走得更远。
private void tabControl1_MouseDown(object sender, MouseEventArgs e)
{
var lastIndex = this.tabControl1.TabCount - 1;
Point mouseDownLocation = new Point(e.X, e.Y);
if(this.tabControl1.GetTabRect(lastIndex).Contains(mouseDownLocation))
{
this.tabControl1.TabPages.Insert(lastIndex, tabPage2);
this.tabControl1.SelectedIndex = lastIndex;
tabControl1.Refresh();
}
}
PIC1:table before new tab PIC2:table vanishes after new tab is added