Quick Start

1. Add Package Reference

<ItemGroup>
  <PackageReference Include="MudBlazor" Version="8.13.0" />
  <PackageReference Include="Gridify" Version="2.17.0" />
  <ProjectReference Include="../Selmir.MudGridify/Selmir.MudGridify.csproj" />
</ItemGroup>

2. Configure Services

using MudBlazor.Services;

var builder = WebAssemblyHostBuilder.CreateDefault(args);

// Add MudBlazor services
builder.Services.AddMudServices();

await builder.Build().RunAsync();

3. Add Required Imports

@using MudBlazor
@using Selmir.MudGridify.Models
@using Selmir.MudGridify.Components
@using Gridify

4. Use the Component

@page "/filter-demo"
@using Selmir.MudGridify.Components
@using Selmir.MudGridify.Models

<GridifyFilterBuilder @ref="_filterBuilder"
                      FilterableProperties="@_filterableProperties"
                      ShowGeneratedQuery="true"
                      OnFilterChanged="@OnFilterChanged" />

<MudTable Items="@_filteredData" />

@code {
    private GridifyFilterBuilder? _filterBuilder;
    private List<FilterableProperty> _filterableProperties = new();
    private List<MyModel> _allData = new();
    private List<MyModel> _filteredData = new();

    protected override void OnInitialized()
    {
        // Define filterable properties
        _filterableProperties = new List<FilterableProperty>
        {
            new("FirstName", "First Name", FilterPropertyType.String),
            new("Age", "Age", FilterPropertyType.Number),
            new("BirthDate", "Birth Date", FilterPropertyType.Date),
            new("IsActive", "Active", FilterPropertyType.Boolean)
            {
                TrueLabel = "Yes",
                FalseLabel = "No"
            }
        };

        _allData = GetData();
        _filteredData = _allData;
    }

    private async Task OnFilterChanged(string filterQuery)
    {
        if (string.IsNullOrWhiteSpace(filterQuery))
        {
            _filteredData = new List<MyModel>(_allData);
        }
        else
        {
            // Apply Gridify filter
            var query = _allData.AsQueryable();
            _filteredData = query.ApplyFiltering(filterQuery).ToList();
        }
    }
}

Component API

GridifyFilterBuilder Parameters

FilterableProperty Model

public class FilterableProperty
{
    public string PropertyName { get; set; }    // Property name in your model
    public string DisplayName { get; set; }     // Display name shown to users
    public FilterPropertyType PropertyType { get; set; }  // Data type
    public string? TrueLabel { get; set; }      // Custom label for boolean true
    public string? FalseLabel { get; set; }     // Custom label for boolean false
}

FilterPropertyType Enum

public enum FilterPropertyType
{
    String,
    Number,
    Boolean,
    Date,
    DateTime
}

Programmatic Control

// Get the current filter query
string query = _filterBuilder.GetFilterQuery();

// Set conditions programmatically
_filterBuilder.SetConditions(new List<FilterCondition>
{
    new FilterCondition
    {
        Property = myProperty,
        Operator = FilterOperator.GreaterThan,
        Value = "100"
    }
});

// Add a single condition
_filterBuilder.AddCondition(new FilterCondition { ... });

URL Persistence

MudGridify supports URL persistence through the GridifyQueryParser utility, enabling shareable, bookmarkable filter states. This feature follows the application developer responsibility pattern - the component remains pure and routing-agnostic, while providing the tools you need to integrate URL persistence.

Benefits

• 📤 Shareable: Copy and share URLs with colleagues to show specific filtered views
• 🔖 Bookmarkable: Save frequently used filters as browser bookmarks for quick access
• ⏮️ Browser History: Use back/forward buttons to navigate through filter states
• 🔄 Page Refresh: Filters survive page reload - no state lost on refresh

GridifyQueryParser Utility

The GridifyQueryParser class parses Gridify query strings back into FilterCondition objects for state restoration.

Namespace: Selmir.MudGridify.Utilities

Method Signature:

public static (List<FilterCondition> conditions, bool isOrOperator) Parse(
    string? gridifyQuery,
    List<FilterableProperty> filterableProperties)

Parameters:

• gridifyQuery: The Gridify query string from URL (e.g., "FirstName=John,Age>30")
• filterableProperties: Your list of filterable properties to resolve references

Returns:

• conditions: List of parsed FilterCondition objects
• isOrOperator: true if OR logic is used (| separator), false for AND (, separator)

Implementation Example

@page "/my-data"
@inject NavigationManager Navigation
@using System.Web

<GridifyFilterBuilder @ref="_filterBuilder"
                      FilterableProperties="@_filterableProperties"
                      InitialConditions="@_initialConditions"
                      OnFilterChanged="@OnFilterChanged" />

@code {
    private GridifyFilterBuilder? _filterBuilder;
    private List<FilterableProperty> _filterableProperties = new();
    private List<FilterCondition> _initialConditions = new();
    private List<MyData> _allData = new();
    private List<MyData> _filteredData = new();

    protected override async Task OnInitializedAsync()
    {
        // 1. Define filterable properties
        _filterableProperties = new List<FilterableProperty>
        {
            new("Name", "Name", FilterPropertyType.String),
            new("Price", "Price", FilterPropertyType.Number),
            new("CreatedDate", "Created", FilterPropertyType.Date)
        };

        // 2. Load data
        _allData = await GetDataAsync();
        _filteredData = _allData;

        // 3. Parse URL parameters to restore filter state
        await LoadFiltersFromUrl();
    }

    private async Task LoadFiltersFromUrl()
    {
        try
        {
            var uri = new Uri(Navigation.Uri);
            var queryString = HttpUtility.ParseQueryString(uri.Query);
            var filterParam = queryString["filter"];

            if (!string.IsNullOrEmpty(filterParam))
            {
                // Parse Gridify query back into FilterConditions
                var (conditions, isOrOperator) = GridifyQueryParser.Parse(
                    filterParam,
                    _filterableProperties
                );

                if (conditions.Any())
                {
                    _initialConditions = conditions;

                    // Apply filter to data immediately
                    var query = _allData.AsQueryable();
                    _filteredData = query.ApplyFiltering(filterParam).ToList();
                }
            }
        }
        catch (Exception ex)
        {
            // Handle parsing errors gracefully
            Console.WriteLine($"Error parsing URL filters: {ex.Message}");
        }
    }

    private async Task OnFilterChanged(string filterQuery)
    {
        // Update URL with new filter (without page reload)
        UpdateUrl(filterQuery);

        // Apply filter to data
        if (string.IsNullOrWhiteSpace(filterQuery))
        {
            _filteredData = new List<MyData>(_allData);
        }
        else
        {
            var query = _allData.AsQueryable();
            _filteredData = query.ApplyFiltering(filterQuery).ToList();
        }
    }

    private void UpdateUrl(string filterQuery)
    {
        var uri = new Uri(Navigation.Uri);
        var baseUrl = $"{uri.Scheme}://{uri.Authority}{uri.AbsolutePath}";

        if (string.IsNullOrWhiteSpace(filterQuery))
        {
            // Clear filter from URL
            Navigation.NavigateTo(baseUrl, forceLoad: false, replace: true);
        }
        else
        {
            // Add/update filter query parameter
            var encodedFilter = Uri.EscapeDataString(filterQuery);
            var newUrl = $"{baseUrl}?filter={encodedFilter}";
            Navigation.NavigateTo(newUrl, forceLoad: false, replace: true);
        }
    }
}

Key Implementation Points

1. Parse on Init: Use GridifyQueryParser.Parse() in OnInitializedAsync to read URL state
2. Pass to Component: Set InitialConditions parameter with parsed conditions
3. Update URL: Call NavigationManager.NavigateTo() with forceLoad: false, replace: true to update URL without reload
4. URL Encoding: Always use Uri.EscapeDataString() when adding filter to URL
5. Error Handling: Wrap parsing in try-catch to handle malformed or invalid URLs gracefully

URL Format

The URL structure follows this pattern:

https://example.com/page?filter=FirstName%3DJohn%2CAge%3E30

Where filter parameter contains the URL-encoded Gridify query string.

Browser History Support

Using NavigationManager.NavigateTo() with replace: true updates the current history entry. To add new history entries (enabling back/forward navigation), use replace: false:

Navigation.NavigateTo(newUrl, forceLoad: false, replace: false);

Live Demo

See the URL Persistence page in the playground application for a working example with shareable links, browser history support, and detailed implementation notes.

Running the Playground

cd src/Selmir.MudGridify.Playground
dotnet run

Navigate to http://localhost:5259 to see the component in action.

Playground Examples

1. Home: Overview and feature list
2. Employee Filter: Filter employees by name, department, salary, age, hire date, and status
3. Product Filter: Filter products by name, category, price, stock, and availability
4. Advanced Demo: Quick filter presets, statistics, and programmatic control examples
5. URL Persistence: Shareable filters, bookmarks, browser history, and URL integration patterns

Gridify Query Examples

The component generates valid Gridify query strings:

# Single condition
FirstName=John

# Multiple conditions with AND
FirstName=John,Age>30

# Multiple conditions with OR
Department=Sales|Department=Marketing

# String operators
FirstName^J                    # Starts with J
Email$@company.com            # Ends with @company.com
Department=*ing               # Contains "ing"

# Case-insensitive
FirstName=john/i              # Matches John, JOHN, john, etc.

# Comparison operators
Age>25                        # Greater than 25
Salary>=100000               # Greater or equal to 100000
HireDate<2023-01-01          # Before Jan 1, 2023

# Complex queries
(FirstName=*Jo,Age<30)|(FirstName!=Hn,Age>30)

Technology Stack

• .NET 10: Latest .NET framework
• Blazor WebAssembly: Client-side Blazor
• MudBlazor 8.13.0: Material Design component library
• Gridify 2.17.0: Dynamic LINQ library for filtering, sorting, and paging

License

This project is provided as-is for demonstration purposes.

Credits

• Gridify by Alireza Sabouri
• MudBlazor by MudBlazor Team

Contributing

Contributions are welcome! Feel free to submit issues and pull requests.