WinformsTabControl：如何隐藏选项卡中的边框？

可以通过在TabControl的DrawItem事件中自定义选项卡的绘制方式来隐藏边框。

以下是一个示例代码：

private void tabControl1_DrawItem(object sender, DrawItemEventArgs e) { Graphics g = e.Graphics; Brush _textBrush;

// Get the item from the collection
TabPage _tabPage = tabControl1.TabPages[e.Index];

// Get the real bounds for the tab rectangle
Rectangle _tabBounds = tabControl1.GetTabRect(e.Index);

if (e.State == DrawItemState.Selected)
{
    // Draw a different background color for selected tab
    _textBrush = new SolidBrush(Color.Black);
    g.FillRectangle(Brushes.White, e.Bounds);
}
else
{
    _textBrush = new System.Drawing.SolidBrush(e.ForeColor);
    e.DrawBackground();
}

// Use our own font
Font _tabFont = new Font("Microsoft Sans Serif", 10, FontStyle.Bold, GraphicsUnit.Pixel);

// Draw string. Center the text.
StringFormat _stringFlags = new StringFormat();
_stringFlags.Alignment = StringAlignment.Center;
_stringFlags.LineAlignment = StringAlignment.Center;
g.DrawString(_tabPage.Text, _tabFont, _textBrush, _tabBounds, new StringFormat(_stringFlags));

// Draw the focus rectangle around the selected tab page.
if (e.State == DrawItemState.Selected)
{
    Rectangle _focusRect = e.Bounds;
    _focusRect.Inflate(-2, -2);
    ControlPaint.DrawFocusRectangle(g, _focusRect);
}

}

在Form_Load事件中将tabControl1的DrawMode属性设置为OwnerDrawFixed，然后将DrawItem事件与上面的代码绑定即可：

private void Form1_Load(object sender, EventArgs e) { tabControl1.DrawMode = TabDrawMode.OwnerDrawFixed; tabControl1.DrawItem += new DrawItemEventHandler(tabControl1_DrawItem); }