Problem with animation

See more:

C#

XAML

WPF

When I click the diagnosisButton, there is a button(GenBtn) in the border
GenBtn.omniButtonLabel.Content = "General Information"
When I leave(mouseleave) the border and apply animation(minimize the border slowly slowly),content of GenBtn is lost alphabets bise.
for example:General Informatio,General Informati, General Informat,General Informa,General Inform,General Infor,General Info,General Inf,General In,General I,General and so on..
But I would like to show the content like tihs

General
Information
and then lost.

<Border Name="LeftPanel" DockPanel.Dock="Left" MinWidth="24" VerticalAlignment="Stretch"
                    Background="{DynamicResource MyBlueBackgroundGradientBrush}"
                    BorderBrush="{DynamicResource MyBlueBackgroundGradientBrush}" BorderThickness="1,1,1,1" CornerRadius="4"
                    MouseEnter="LeftPanelMouseEnter" MouseLeave="LeftPanelMouseLeave">
                                <Grid Name="LeftPanelGrid" Width="Auto" Height="Auto">
                                    <Grid.RowDefinitions>
                                        <RowDefinition Height=".060*"/>
                                        <RowDefinition Height=".060*"/>
                                        <RowDefinition Height=".600*"/>
                                        <RowDefinition Height=".165*"/>
                                        <RowDefinition Height=".08*"/>
                                    </Grid.RowDefinitions>
                                    <!--  LEFT PANEL HEADER ( APPLICATION & SELECTED BUTTON )  -->

<Border Name="borderSelectedButton" VerticalAlignment="Stretch" Grid.Row="1"
                            Background="{DynamicResource MyBorderBlueGradientBrush}"
                            BorderBrush="{DynamicResource MyBlueBorderSolidBrush}"
                            BorderThickness="0.5,0.5,0.5,0.5" Margin="1,3,1,0">
                                        <DockPanel x:Name="selectedButton" Width="Auto" Height="20" >
                                            <TextBlock Name="selectedButtonText" VerticalAlignment="Center" Margin="0,0,0,0"
                                       FontSize="11" Foreground="DarkBlue"
                                       Text="" TextWrapping="NoWrap" FontFamily="Tahoma"/>
                        </DockPanel>
                                    </Border>
                                   <!-- MAIN BUTTONS  -->
                                    <Grid x:Name="gridMainButtons" VerticalAlignment="Stretch" Grid.Row="3" Margin="0,1,0,1"
                                Background="{DynamicResource MyBlueBackgroundGradientBrush}">
                                        <Grid.RowDefinitions>
                                            <RowDefinition/>
                                            <RowDefinition/>
                                            <RowDefinition/>
                                        </Grid.RowDefinitions>
                                        <Button Name="diagnosisButton" Grid.Row="0" Style="{DynamicResource MyBottomLeftButtonStyle}"
                                Height="auto" Background="White" Margin="0,0,0,0"
                                BorderBrush="{DynamicResource MyBlueSolidBrush2}" BorderThickness="0,0.2,0,0.2"
                                HorizontalContentAlignment="Left" Padding="3,1,1,1" Click="Diagnosis_Click">
 <StackPanel Width="Auto" Height="auto" Orientation="Horizontal">
                                                <TextBlock HorizontalAlignment="Left" Margin="27,7,0,0" VerticalAlignment="Center"
                                           Foreground="DarkBlue" FontFamily="Tahoma"
                                           TextWrapping="Wrap" FontSize="12">
                                                    <Underline>D</Underline>iagnosis
                                                </TextBlock>
                            </StackPanel>
                                        </Button>
                                        <Button Name="firmwareButton" Grid.Row="1" Style="{DynamicResource MyBottomLeftButtonStyle}"
                                Height="auto" Background="White" Margin="0,0,0,0"
                                BorderBrush="{DynamicResource MyBlueSolidBrush2}" BorderThickness="0,0.2,0,0.2"
                                HorizontalContentAlignment="Left" Padding="3,1,1,1" Width="Auto"
                                Click="firmwareButtonClick">
                                            <StackPanel Width="Auto" Height="auto" Orientation="Horizontal">
                                                <TextBlock HorizontalAlignment="Left" Margin="27,7,0,0" VerticalAlignment="Center"
                                           Foreground="DarkBlue" FontFamily="Tahoma"
                                           TextWrapping="Wrap" FontSize="12">
                                                    <Underline>F</Underline>irmware
                                                </TextBlock>
                            </StackPanel>
 </Button>
                                        <Button Name="readerSettingButton" Grid.Row="2" Style="{DynamicResource MyBottomLeftButtonStyle}"
                                Height="auto" Background="White" Margin="0,0,0,0"
                                BorderBrush="{DynamicResource MyBlueSolidBrush2}" BorderThickness="0,0.2,0,0.2"
                                HorizontalContentAlignment="Left" Padding="3,1,1,1" Width="Auto"
                                Click="readerSettingButtonClick">
                                            <StackPanel Width="Auto" Height="auto" Orientation="Horizontal">
                                                <TextBlock HorizontalAlignment="Left" Margin="27,7,0,0" VerticalAlignment="Center"
                                           Foreground="DarkBlue" FontFamily="Tahoma"
                                           TextWrapping="Wrap" FontSize="12">
                                                    Reader <Underline>S</Underline>ettings
                                                </TextBlock>
                            </StackPanel>
                                        </Button>
</Border>



 private void Diagnosis_Click(object sender, RoutedEventArgs e)
        {
            diagnosis();
        }
 public void diagnosis()
        {

            selectedButtonText.Text = " Diagnosis";

            relatedControlStackPanel.Children.Clear();
            readerButton GenBtn = new readerButton();
            GenBtn.omniButtonLabel.Content = "General Information";
}

 private void LeftPanelMouseLeave(object sender, MouseEventArgs e)
        {

                LeftPanel.Width = LeftPanel.MinWidth;


                this.RegisterName(LeftPanel.Name, LeftPanel);
                DoubleAnimation dbani = new DoubleAnimation();
                dbani.From = LeftPanelMaxWidth;
                dbani.To = 24;
                dbani.Duration = new Duration(TimeSpan.FromSeconds(.7));
                Storyboard.SetTargetName(dbani, LeftPanel.Name);
                Storyboard.SetTargetProperty(dbani, new PropertyPath(Border.WidthProperty));
                Storyboard myWidthAnimatedButtonStoryboard = new Storyboard();
                myWidthAnimatedButtonStoryboard.Children.Add(dbani);
                myWidthAnimatedButtonStoryboard.Begin(LeftPanel);
                mySidebarControl.Visibility = Visibility.Visible;
                selectedButton.Margin = new Thickness(24, 0, 0, 0);
                diagnosisButton.Margin = new Thickness(24, 0, 0, 0);
                firmwareButton.Margin = new Thickness(24, 0, 0, 0);
                readerSettingButton.Margin = new Thickness(24, 0, 0, 0);
                logoPanel.Margin = new Thickness(24, 0, 0, 0);
                /////////////



        }
 private void Diagnosis_Click(object sender, RoutedEventArgs e)
        {
            diagnosis();
        }
 public void diagnosis()
        {

            selectedButtonText.Text = " Diagnosis";

            relatedControlStackPanel.Children.Clear();
            readerButton GenBtn = new readerButton();
            GenBtn.omniButtonLabel.Content = "General Information";
}

 private void LeftPanelMouseLeave(object sender, MouseEventArgs e)
        {

                LeftPanel.Width = LeftPanel.MinWidth;


                this.RegisterName(LeftPanel.Name, LeftPanel);
                DoubleAnimation dbani = new DoubleAnimation();
                dbani.From = LeftPanelMaxWidth;
                dbani.To = 24;
                dbani.Duration = new Duration(TimeSpan.FromSeconds(.7));
                Storyboard.SetTargetName(dbani, LeftPanel.Name);
                Storyboard.SetTargetProperty(dbani, new PropertyPath(Border.WidthProperty));
                Storyboard myWidthAnimatedButtonStoryboard = new Storyboard();
                myWidthAnimatedButtonStoryboard.Children.Add(dbani);
                myWidthAnimatedButtonStoryboard.Begin(LeftPanel);
                mySidebarControl.Visibility = Visibility.Visible;
                selectedButton.Margin = new Thickness(24, 0, 0, 0);
                diagnosisButton.Margin = new Thickness(24, 0, 0, 0);
                firmwareButton.Margin = new Thickness(24, 0, 0, 0);
                readerSettingButton.Margin = new Thickness(24, 0, 0, 0);
                logoPanel.Margin = new Thickness(24, 0, 0, 0);
                /////////////



        }