在Blazor应用程序中，如果你需要通过多个字符串进行筛选，你可以使用C#的字符串拼接，并将其添加到Lambda表达式中，以在数据集中进行筛选。例如，以下代码对包含"John"和"Smith"的所有人进行筛选：

var query = People.Where(p => (p.FirstName + " " + p.LastName).Contains("JohnSmith"));

在Blazor中，您可以将此代码添加到组件的C#类中的方法中，以便使用Linq查询数据并筛选出需要的结果。以下是一个简单的示例：

@page "/people"
@using MyNamespace.Models

People


    Search:
    



        @foreach (var person in QueryPeople())
        {
            
        }
    

    

        

            
First Name
            
Last Name
            
Email
            
Phone
        
    
    

                
@person.FirstName
                
@person.LastName
                
@person.Email
                
@person.Phone
            


@code {
    private List People { get; set; } = new List();

    private string searchText { get; set; }

    private List QueryPeople()
    {
        // perform the query and filter by search text
        var query = People.Where(p => (p.FirstName + " " + p.LastName).Contains(searchText));

        return query.ToList();
    }

    protected override void OnInitialized()
    {
        // load the data when the component is loaded
        People = new List()
        {
            new Person(){ FirstName = "John", LastName = "Smith", Email = "john.smith@example.com", Phone = "123-456-7890"},
            new Person(){ FirstName = "Jane", LastName = "Doe", Email = "jane