wpf中的Tabitems问题

Question

我有这个简单的标签控件

            <TabControl Margin="0,32,0,0" Background="Aqua">

                <TabItem Header="Dashaboard"
                         FontSize="12"
                         Background="SaddleBrown"
                         Margin="-2,-2,-124,-21">
                    <local:Dashboard Margin="0,0,-8,0"
                                    />

                </TabItem>
                <TabItem Header="Transfer Wizard"
                         Background="LightGray"
                         FontSize="15"
                         ToolTip="Transfering equipments between departments"
                         Margin="123,-2,-224,-21">
                    <local:TransferWizard Margin="0,-4,0,4"
                                          />

                </TabItem>
                <TabItem Header="Addition Wizard"
                         Background="#c8f7c5"
                         ToolTip="Tab for equipment , customer and employees addition"
                         Margin="223,-2,-359,-21">
                    <local:EquipmentAddNavigator Margin="0,-23,0,0" />
                </TabItem>
                <TabItem Header="Addition Wizard"
                         Background="#c8f7c5"
                         ToolTip="Tab for equipment , customer and employees addition"
                         Margin="359,0,-526,-20">
                    <local:EquipmentAddNavigator Margin="0,-23,0,0"
                                                 Loaded="EquipmentAddNavigator_Loaded" />
                </TabItem>


            </TabControl>

而且我在仪表板上有一个称为（refresh（））的方法

这是我的问题

1每当用户单击“仪表板”选项卡项目时，我如何执行刷新方法？

2如何定义全局变量并使所有选项卡项目都可以使用它？

Answer 1

在代码中：