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H
Hatim Bouzian

User Assignment Dropdown Design

Clone & Customize via AI

The MudBlazor Seller Assignments page maps owner names to sales users using MudSelect multi-select and chips. It shows unassigned owner names and per-user assignment cards in a Tailwind grid.

● LIVE DEMO
Generated using Instruct UI - An AI for Blazor UI Generation
## What's implemented - Left column: unassigned OwnerNames list with scrollable container. - Right column: per-user assignment cards showing user info, assigned chips and a MudSelect for multi-selection. - Remove action per-assignment using MudIconButton and chips; Save and Reset actions trigger Snackbar feedback. - Loading state with MudProgressCircular while data loads. ## Key components - MudSelect<T>, MudSelectItem<T> - MudIcon, MudIconButton - MudProgressCircular - Snackbar via ISnackbar - Blazor patterns: OnInitializedAsync, StateHasChanged, @foreach rendering - Data types: UserModel record, HashSet<string>, Dictionary<string, HashSet<string>> ## How it works - OnInitializedAsync calls LoadDataAsync which populates _ownerNames and _salesUsers (demo data in code). - SelectedValues / SelectedValuesChanged on MudSelect invoke OnOwnerNamesSelected(userId, selected) to update _userAssignments. - GetSelectedOwnerNamesForUser reads the assignment HashSet for binding to MudSelect. - RemoveAssignment removes an owner name from a user's HashSet and updates the unassigned list via UpdateUnassignedOwnerNames. - SaveAll and ResetAssignments show Snackbar messages; SaveAll is a placeholder for persisting _userAssignments to a backend service. ## Styling - Tailwind utility classes compose the layout: grid, lg:grid-cols-3, flex, gap-*, p-*, rounded, dark: variants. - MudBlazor components are used inline (no MudPaper wrapper); theme and component styling come from MudBlazor while overall spacing and responsive grid come from Tailwind. - Responsive behavior: two-column layout on large screens (lg:grid-cols-3) and single column on small screens. ## Reuse steps 1. Add MudBlazor NuGet and register MudBlazor services (builder.Services.AddMudServices()) and ISnackbar in Program.cs. 2. Ensure Tailwind CSS utility classes are available or replace with project CSS/Bootstrap classes. 3. Import namespace MudBlazor and inject ISnackbar in the component. 4. Replace the demo LoadDataAsync with real service calls to fetch owner names and users; update SaveAll to POST assignments to an API. 5. Adjust UserModel or backend DTOs, and consider paging or virtualized lists for large datasets. ## Limitations & next steps - This is a single-page demo generated by Instruct UI; backend persistence, authentication/authorization checks, and service wiring are not implemented. - No server-side validation or concurrency handling for assignments; consider optimistic locking or server-side dedupe. - Accessibility improvements: keyboard support for chips, aria labels for MudSelect and icon buttons. - Suggested extensions: add search/filter for owner names, pagination or virtualization for many users, and unit/integration tests for assignment logic.