C# winform中 tabcontrol 给选项卡被选中或没被选中设置背景图，如何避免

C# winform中 tabcontrol 给选项卡被选中或没被选中设置背景图，如何处理？
C# winform中 tabcontrol 给选项卡被选中或没被选中设置背景图，如何处理？

[解决办法]
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[解决办法]
private void tabControl_SelectedTabChanged(object sender, EventArgs e)
{
if (tabControl.SelectedTabIndex == 0)
{
try
{
tabControl.Tabs[0].Image = Image.FromFile(Application.StartupPath + @"\Image\mainImage\12.png");
tabControl.Tabs[1].Image = Image.FromFile(Application.StartupPath + @"\Image\mainImage\2.png");
tabControl.Tabs[2].Image = Image.FromFile(Application.StartupPath + @"\Image\mainImage\3.png");
tabControl.Tabs[3].Image = Image.FromFile(Application.StartupPath + @"\Image\mainImage\4.png");
}catch(Exception){}
}
}