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C# 如何将WPF扩展器图标从正/负更改为箭头_C#_Wpf_Expander - Fatal编程技术网

C# 如何将WPF扩展器图标从正/负更改为箭头

C# 如何将WPF扩展器图标从正/负更改为箭头,c#,wpf,expander,C#,Wpf,Expander,我是WPF的新手。当我使用扩展器时,它显示为正/负扩展器标志。但我想用箭头代替它 我该怎么做

我是WPF的新手。当我使用扩展器时,它显示为正/负扩展器标志。但我想用箭头代替它

我该怎么做