Dynamic Query Building
for .NET

@inject IQueryConfigurator Configurator

<QueryBuilderContainer Configurator="@Configurator">
    <QueryBuilder T="Customer"
                  OnQueryExecuted="@HandleResults" />
</QueryBuilderContainer>

@code {
    private void HandleResults(QueryResult<Customer> result)
    {
        // Process query results
    }
}

<!-- Razor Page with Tag Helpers -->
<form method="post">
    <nqb-entity-selector
        session-id="@Model.SessionId" />
    <nqb-property-selector
        session-id="@Model.SessionId" />
    <nqb-condition-builder
        session-id="@Model.SessionId" />

    <button type="submit"
            formaction="?handler=ExecuteQuery">
        Run Query
    </button>
</form>

public class CustomOperator : IOperator
{
    public Expression BuildExpression(
        MemberExpression property,
        ConstantExpression value)
    {
        // Build custom expression tree
        return Expression.Call(
            property,
            typeof(string).GetMethod("StartsWith"),
            value);
    }

    public string Stringify(
        string property, object value)
    {
        return $"{property} starts with '{value}'";
    }
}