add miss parameter

Author: AuroraDysis

MainDemo.Wpf/IconPack.xaml

@@ -61,11 +61,12 @@
                         </Grid.ColumnDefinitions>
                         <Button Style="{DynamicResource MaterialDesignToolButton}" 
                                 Command="{Binding SearchCommand}" x:Name="SearchButton"
+                                CommandParameter="{Binding ElementName=SearchBox, Path=Text}"
                                 Height="24" Width="24">
                             <materialDesign:PackIcon Kind="Magnify" Opacity=".56" />
                         </Button>
                         <TextBox Grid.Column="1" Margin="5 0 0 0" KeyDown="Search_OnKeyDown"
-                             materialDesign:TextFieldAssist.Hint="Search"
+                             materialDesign:TextFieldAssist.Hint="Search" x:Name="SearchBox"
                              materialDesign:TextFieldAssist.DecorationVisibility="Hidden" BorderThickness="0"
                              MinWidth="200" VerticalAlignment="Center" />
                     </Grid>