Fix DropDownButton content update on menu item selection

[Copilot]

The Email DropDownButton controls display "Email" as static content. Selecting menu items (Send, Reply, Reply All) does not update the button to reflect the selection.

Changes

Simple DropDownButton:

• Added x:Name to enable code-behind access
• Wired Click handlers to MenuFlyoutItems
• Implemented handler to update Content property with selected text

Icon DropDownButton:

• Modified content structure to display both icon and text label using StackPanel
• Added Tag attributes storing glyph codes for each menu item
• Implemented handler to update both icon glyph and text on selection
• Added type validation for Tag property using pattern matching

Example implementation:

private void EmailMenuItem_Click(object sender, RoutedEventArgs e)
{
    var menuItem = sender as MenuFlyoutItem;
    if (menuItem != null)
    {
        EmailDropDownButton.Content = menuItem.Text;
    }
}

Updated sample code files to reflect the new interactive patterns.

Warning

Firewall rules blocked me from connecting to one or more addresses (expand for details)

I tried to connect to the following addresses, but was blocked by firewall rules:

• 0t3vsblobprodcus362.vsblob.vsassets.io
  • Triggering command: /usr/bin/dotnet dotnet restore --no-dependencies /home/REDACTED/work/WinUI-Gallery/.codeql-scratch/dbs/csharp/working/EB23B7D1B15B85081672081E55C17E18/missingpackages_workingdir --packages /home/REDACTED/work/WinUI-Gallery/.codeql-scratch/dbs/csharp/working/missingpackages /p:DisableImplicitNuGetFallbackFolder=true --verbosity normal --configfile /home/REDACTED/work/WinUI-Gallery/.codeql-scratch/dbs/csharp/working/nugetconfig/nuget.config --force (dns block)
• 1p7vsblobprodcus324.vsblob.vsassets.io
  • Triggering command: /usr/bin/dotnet dotnet restore --no-dependencies /home/REDACTED/work/WinUI-Gallery/.codeql-scratch/dbs/csharp/working/E25CD4A82AF7DCCAC78C9E3EDD9CC1BB/missingpackages_workingdir --packages /home/REDACTED/work/WinUI-Gallery/.codeql-scratch/dbs/csharp/working/missingpackages /p:DisableImplicitNuGetFallbackFolder=true --verbosity normal --configfile /home/REDACTED/work/WinUI-Gallery/.codeql-scratch/dbs/csharp/working/nugetconfig/nuget.config --force (dns block)
• 4zjvsblobprodcus390.vsblob.vsassets.io
  • Triggering command: /usr/bin/dotnet dotnet restore --no-dependencies /home/REDACTED/work/WinUI-Gallery/.codeql-scratch/dbs/csharp/working/DD674349C5B065D73E0313A5900CA422/missingpackages_workingdir --packages /home/REDACTED/work/WinUI-Gallery/.codeql-scratch/dbs/csharp/working/missingpackages /p:DisableImplicitNuGetFallbackFolder=true --verbosity normal --configfile /home/REDACTED/work/WinUI-Gallery/.codeql-scratch/dbs/csharp/working/nugetconfig/nuget.config --force (dns block)
• 51yvsblobprodcus36.vsblob.vsassets.io
  • Triggering command: /usr/bin/dotnet dotnet restore --no-dependencies /home/REDACTED/work/WinUI-Gallery/.codeql-scratch/dbs/csharp/working/A5067618043C36E803E5020505C5E40F/missingpackages_workingdir --packages /home/REDACTED/work/WinUI-Gallery/.codeql-scratch/dbs/csharp/working/missingpackages /p:DisableImplicitNuGetFallbackFolder=true --verbosity normal --configfile /home/REDACTED/work/WinUI-Gallery/.codeql-scratch/dbs/csharp/working/nugetconfig/nuget.config --force (dns block)
• 6s7vsblobprodcus313.vsblob.vsassets.io
  • Triggering command: /usr/bin/dotnet dotnet restore --no-dependencies /home/REDACTED/work/WinUI-Gallery/.codeql-scratch/dbs/csharp/working/7F0AD5B89EC078FE77CFD6BDA2F52E08/missingpackages_workingdir --packages /home/REDACTED/work/WinUI-Gallery/.codeql-scratch/dbs/csharp/working/missingpackages /p:DisableImplicitNuGetFallbackFolder=true --verbosity normal --configfile /home/REDACTED/work/WinUI-Gallery/.codeql-scratch/dbs/csharp/working/nugetconfig/nuget.config --force (dns block)
• 96bvsblobprodcus338.vsblob.vsassets.io
  • Triggering command: /usr/bin/dotnet dotnet restore --no-dependencies /home/REDACTED/work/WinUI-Gallery/WinUI-Gallery/tests/WinUIGallery.UITests/WinUIGallery.UITests.csproj --packages /home/REDACTED/work/WinUI-Gallery/.codeql-scratch/dbs/csharp/working/packages /p:DisableImplicitNuGetFallbackFolder=true --verbosity normal /p:TargetFrameworkRootPath=/home/REDACTED/work/WinUI-Gallery/.codeql-scratch/dbs/csharp/working/emptyFakeDotnetRoot /p:NetCoreTargetingPackRoot=/home/REDACTED/work/WinUI-Gallery/.codeql-scratch/dbs/csharp/working/emptyFakeDotnetRoot (dns block)
• crl.godaddy.com
  • Triggering command: /usr/bin/dotnet dotnet restore --no-dependencies /home/REDACTED/work/WinUI-Gallery/.codeql-scratch/dbs/csharp/working/9385D6F79C8C3B1189EF0A92FFB71E10/missingpackages_workingdir --packages /home/REDACTED/work/WinUI-Gallery/.codeql-scratch/dbs/csharp/working/missingpackages /p:DisableImplicitNuGetFallbackFolder=true --verbosity normal --configfile /home/REDACTED/work/WinUI-Gallery/.codeql-scratch/dbs/csharp/working/nugetconfig/nuget.config --force (dns block)
• e7bvsblobprodcus348.vsblob.vsassets.io
  • Triggering command: /usr/bin/dotnet dotnet build WinUIGallery.sln -c Debug (dns block)
  • Triggering command: /usr/bin/dotnet dotnet restore --no-dependencies /home/REDACTED/work/WinUI-Gallery/WinUI-Gallery/WinUIGallery.sln --packages /home/REDACTED/work/WinUI-Gallery/.codeql-scratch/dbs/csharp/working/packages /p:DisableImplicitNuGetFallbackFolder=true --verbosity normal /p:TargetFrameworkRootPath=/home/REDACTED/work/WinUI-Gallery/.codeql-scratch/dbs/csharp/working/emptyFakeDotnetRoot /p:NetCoreTargetingPackRoot=/home/REDACTED/work/WinUI-Gallery/.codeql-scratch/dbs/csharp/working/emptyFakeDotnetRoot (dns block)
  • Triggering command: /usr/bin/dotnet dotnet restore --no-dependencies /home/REDACTED/work/WinUI-Gallery/WinUI-Gallery/WinUIGallery.DesktopWap.sln --packages /home/REDACTED/work/WinUI-Gallery/.codeql-scratch/dbs/csharp/working/packages /p:DisableImplicitNuGetFallbackFolder=true --verbosity normal /p:TargetFrameworkRootPath=/home/REDACTED/work/WinUI-Gallery/.codeql-scratch/dbs/csharp/working/emptyFakeDotnetRoot /p:NetCoreTargetingPackRoot=/home/REDACTED/work/WinUI-Gallery/.codeql-scratch/dbs/csharp/working/emptyFakeDotnetRoot (dns block)
• gbsvsblobprodcus365.vsblob.vsassets.io
  • Triggering command: /usr/bin/dotnet dotnet restore --no-dependencies /home/REDACTED/work/WinUI-Gallery/.codeql-scratch/dbs/csharp/working/7C8EA345233C92F4CB2BB9658BB2AA46/missingpackages_workingdir --packages /home/REDACTED/work/WinUI-Gallery/.codeql-scratch/dbs/csharp/working/missingpackages /p:DisableImplicitNuGetFallbackFolder=true --verbosity normal --configfile /home/REDACTED/work/WinUI-Gallery/.codeql-scratch/dbs/csharp/working/nugetconfig/nuget.config --force (dns block)
• gervsblobprodcus329.vsblob.vsassets.io
  • Triggering command: /usr/bin/dotnet dotnet restore --no-dependencies /home/REDACTED/work/WinUI-Gallery/.codeql-scratch/dbs/csharp/working/C1A6874189F3A3E4F1A43CCA7F065BAD/missingpackages_workingdir --packages /home/REDACTED/work/WinUI-Gallery/.codeql-scratch/dbs/csharp/working/missingpackages /p:DisableImplicitNuGetFallbackFolder=true --verbosity normal --configfile /home/REDACTED/work/WinUI-Gallery/.codeql-scratch/dbs/csharp/working/nugetconfig/nuget.config --force (dns block)
• ibzvsblobprodcus369.vsblob.vsassets.io
  • Triggering command: /usr/bin/dotnet dotnet restore --no-dependencies /home/REDACTED/work/WinUI-Gallery/WinUI-Gallery/tests/WinUIGallery.UITests/WinUIGallery.UITests.csproj --packages /home/REDACTED/work/WinUI-Gallery/.codeql-scratch/dbs/csharp/working/packages /p:DisableImplicitNuGetFallbackFolder=true --verbosity normal /p:TargetFrameworkRootPath=/home/REDACTED/work/WinUI-Gallery/.codeql-scratch/dbs/csharp/working/emptyFakeDotnetRoot /p:NetCoreTargetingPackRoot=/home/REDACTED/work/WinUI-Gallery/.codeql-scratch/dbs/csharp/working/emptyFakeDotnetRoot (dns block)
• jd4vsblobprodcus366.vsblob.vsassets.io
  • Triggering command: /usr/bin/dotnet dotnet restore --no-dependencies /home/REDACTED/work/WinUI-Gallery/.codeql-scratch/dbs/csharp/working/AFED770A6C82C3D0C8515A8A32ECB221/missingpackages_workingdir --packages /home/REDACTED/work/WinUI-Gallery/.codeql-scratch/dbs/csharp/working/missingpackages /p:DisableImplicitNuGetFallbackFolder=true --verbosity normal --configfile /home/REDACTED/work/WinUI-Gallery/.codeql-scratch/dbs/csharp/working/nugetconfig/nuget.config --force (dns block)
• k4kvsblobprodcus344.vsblob.vsassets.io
  • Triggering command: /usr/bin/dotnet dotnet restore --no-dependencies /home/REDACTED/work/WinUI-Gallery/.codeql-scratch/dbs/csharp/working/AFED770A6C82C3D0C8515A8A32ECB221/missingpackages_workingdir --packages /home/REDACTED/work/WinUI-Gallery/.codeql-scratch/dbs/csharp/working/missingpackages /p:DisableImplicitNuGetFallbackFolder=true --verbosity normal --configfile /home/REDACTED/work/WinUI-Gallery/.codeql-scratch/dbs/csharp/working/nugetconfig/nuget.config --force (dns block)
• ocsp.godaddy.com
  • Triggering command: /usr/bin/dotnet dotnet restore --no-dependencies /home/REDACTED/work/WinUI-Gallery/.codeql-scratch/dbs/csharp/working/9385D6F79C8C3B1189EF0A92FFB71E10/missingpackages_workingdir --packages /home/REDACTED/work/WinUI-Gallery/.codeql-scratch/dbs/csharp/working/missingpackages /p:DisableImplicitNuGetFallbackFolder=true --verbosity normal --configfile /home/REDACTED/work/WinUI-Gallery/.codeql-scratch/dbs/csharp/working/nugetconfig/nuget.config --force (dns block)
• pkvvsblobprodcus321.vsblob.vsassets.io
  • Triggering command: /usr/bin/dotnet dotnet restore --no-dependencies /home/REDACTED/work/WinUI-Gallery/WinUI-Gallery/tests/WinUIGallery.UITests/WinUIGallery.UITests.csproj --packages /home/REDACTED/work/WinUI-Gallery/.codeql-scratch/dbs/csharp/working/packages /p:DisableImplicitNuGetFallbackFolder=true --verbosity normal /p:TargetFrameworkRootPath=/home/REDACTED/work/WinUI-Gallery/.codeql-scratch/dbs/csharp/working/emptyFakeDotnetRoot /p:NetCoreTargetingPackRoot=/home/REDACTED/work/WinUI-Gallery/.codeql-scratch/dbs/csharp/working/emptyFakeDotnetRoot (dns block)
• vb4vsblobprodcus33.vsblob.vsassets.io
  • Triggering command: /usr/bin/dotnet dotnet restore --no-dependencies /home/REDACTED/work/WinUI-Gallery/.codeql-scratch/dbs/csharp/working/2BA3A66AC79FC725BB64C9C1AA39E377/missingpackages_workingdir --packages /home/REDACTED/work/WinUI-Gallery/.codeql-scratch/dbs/csharp/working/missingpackages /p:DisableImplicitNuGetFallbackFolder=true --verbosity normal --configfile /home/REDACTED/work/WinUI-Gallery/.codeql-scratch/dbs/csharp/working/nugetconfig/nuget.config --force (dns block)
• vwvvsblobprodcus334.vsblob.vsassets.io
  • Triggering command: /usr/bin/dotnet dotnet restore --no-dependencies /home/REDACTED/work/WinUI-Gallery/.codeql-scratch/dbs/csharp/working/780211A2D4C6297318C9E18BBEC72052/missingpackages_workingdir --packages /home/REDACTED/work/WinUI-Gallery/.codeql-scratch/dbs/csharp/working/missingpackages /p:DisableImplicitNuGetFallbackFolder=true --verbosity normal --configfile /home/REDACTED/work/WinUI-Gallery/.codeql-scratch/dbs/csharp/working/nugetconfig/nuget.config --force (dns block)
• ytvvsblobprodcus310.vsblob.vsassets.io
  • Triggering command: /usr/bin/dotnet dotnet restore --no-dependencies /home/REDACTED/work/WinUI-Gallery/WinUI-Gallery/tests/WinUIGallery.UITests/WinUIGallery.UITests.csproj --packages /home/REDACTED/work/WinUI-Gallery/.codeql-scratch/dbs/csharp/working/packages /p:DisableImplicitNuGetFallbackFolder=true --verbosity normal /p:TargetFrameworkRootPath=/home/REDACTED/work/WinUI-Gallery/.codeql-scratch/dbs/csharp/working/emptyFakeDotnetRoot /p:NetCoreTargetingPackRoot=/home/REDACTED/work/WinUI-Gallery/.codeql-scratch/dbs/csharp/working/emptyFakeDotnetRoot (dns block)

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Original prompt

---

This section details on the original issue you should resolve

<issue_title>On selecting any menu item from 'Email' drop down, default value 'Email' is showing</issue_title>
<issue_description>### Which version of the app?

WinUI 3 Gallery

Description

Environment Details:
OS Version: 24H2 (OS Build 26100.4315)
App: WinUI 3 Gallery
App Version: 2.6.0.0 (SDK 1.7)

Repro Steps:
Launch the WinUI 3 Gallery app.
Navigate to search box using tab key.
Type 'DropDownButton' in search box and hit enter.
Navigate to 'Email' dropdown button and select any menu item from that drop down and observe that drop down.
Actual Result:
On selecting any menu item from 'Email' drop down, default value 'Email' is showing

Note: Same issue is observed for 'Email Icon' drop down present under 'DropDownButton' with icons group

Expected Result:
Once after selecting any menu item from 'Email' dropdown, selecting menu item should be shown in the drop down instead of default value

Xaml page code link: https://github.com/microsoft/WinUI-Gallery/blob/main/WinUIGallery/Samples/ControlPages/DropDownButtonPage.xaml

Screenshots

No response

Windows version

Windows 11 24H2 (26100)

Additional context

No response</issue_description>

Comments on the Issue (you are @copilot in this section)

• Fixes On selecting any menu item from 'Email' drop down, default value 'Email' is showing #2082

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[ayushjai19]

@copilot the xaml file page link is https://github.com/microsoft/WinUI-Gallery/blob/main/WinUIGallery/Samples/ControlPages/DropDownButtonPage.xaml