Query String Generator

C# incremental generator to create a method that returns the query string of the object.

Usage

1. Install the NuGet package

PM> Install-Package QueryStringGenerator

2. Update the Model(s)

Class must be decorated with QueryString attribute, which is declared in QueryStringGenerator namespace.

using QueryStringGenerator;

[QueryString]
public class Model
{
    public int? Limit { get; set; }
    public int? Offset { get; set; }
    public string? Sort { get; set; }
}

3. Call ToQueryString Method to the Instance of the Class

By default the generated method name is ToQueryString, which when called returns the query string of the object.

var model = new Model
{
    Limit = 10,
    Sort = "Price"
};

Console.WriteLine($"Query string: {model.ToQueryString()}");

/*
This code example produces the following results:

Query string: &limit=10&sort=Price
*/

Generated Source Code

Below is the auto-generated extension method for the class defined in step 2. above.

// <auto-generated />

namespace QueryStringGenerator.App.Models
{
    [global::System.CodeDom.Compiler.GeneratedCodeAttribute("QueryStringGenerator", "1.0.0")]
    public static class QueryStringExtensionForModel
    {
        public static string ToQueryString(this Model _this)
        {
            if (_this == null)
            {
                return string.Empty;
            }

            var sb = new global::System.Text.StringBuilder();

            if (_this.Limit != null)
            {
                sb.Append($"&limit={_this.Limit}");
            }

            if (_this.Offset != null)
            {
                sb.Append($"&offset={_this.Offset}");
            }

            if (_this.Sort != null)
            {
                sb.Append($"&sort={System.Net.WebUtility.UrlEncode(_this.Sort)}");
            }

            return sb.ToString();
        }
    }
}

Supported Data Types

• Nullable value types, including enums
• Reference types

NOTE: The query string value for enum is the name of the enum starting with a lowercase character.