c#自己开发的控件的属性如何能实现点击选择文件

在你的Path属性上面加入
[DefaultValue("")]
        [Editor("System.Diagnostics.Design.FSWPathEditor, System.Design, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a", "System.Drawing.Design.UITypeEditor, System.Drawing, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a")]
        public string Path
        {
            get;
            set;
        }