ASP.NETMVC中通过类别下拉列表搜索
创始人
2024-09-19 10:00:39
0次
- 首先，在Model中定义类别属性及对应的搜索方法：
public class Product {
public int Id { get; set; }
public string Name { get; set; }
public string Category { get; set; }
public decimal Price { get; set; }
}
public class ProductSearchRepository {
private List products = new List {
new Product { Id = 1, Name = "iPhone", Category = "Electronics", Price = 999.00m },
new Product { Id = 2, Name = "Samsung TV", Category = "Electronics", Price = 799.00m },
new Product { Id = 3, Name = "Nike Shoes", Category = "Clothing", Price = 69.99m },
new Product { Id = 4, Name = "Levis Jeans", Category = "Clothing", Price = 59.99m },
};
public IEnumerable GetCategories() {
return products.Select(p => p.Category).Distinct().OrderBy(c => c);
}
public IEnumerable SearchByCategory(string category) {
return products.Where(p => p.Category == category).OrderBy(p => p.Name);
}
}
- 在Controller中创建类别下拉列表：
public class ProductsController : Controller {
private ProductSearchRepository repository = new ProductSearchRepository();
public ActionResult Index(string category) {
ViewBag.Category = new SelectList(repository.GetCategories());
var products = string.IsNullOrEmpty(category) ? new List() : repository.SearchByCategory(category);
return View(products);
}
}
- 在View中添加类别下拉列表：
@model IEnumerable
@using (Html.BeginForm()) {
@Html.Label("Category:")
@Html.DropDownList("category", (IEnumerable) ViewBag.Category, "All Categories", new { onchange = "this.form.submit();" })
}
Name
Category
Price
@foreach (var product in Model) {
@product.Name
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