[英]How to get url desire value in asp.net C#
http://example.com/UI/ProductUI.aspx/GetProductByCategory/1 http://example.com/UI/ProductUI.aspx/GetProductByCategory/1
Regarding the url, I want to pass the url value 1 in my content page method parameter when click in left navigation. 关于url,我想在单击左导航时在内容页面方法参数中传递url值1。 The left navigation item is my Category Item and I load it from my category table in my master page by looping. 左侧导航项是我的类别项,我通过循环从我的主页中的类别表中加载了它。 Now I need the item value field eg categoryId pass my content page method perimeter when click this item. 现在,我需要项目值字段,例如categoryId,当单击该项目时通过我的内容页面方法范围。
My Master page code is below: 我的母版页代码如下:
<div class="left">
<%
CategoryManager aCategoryManager=new CategoryManager();
List<Category> categories = aCategoryManager.GetCategories();
foreach (Category category in categories)
{%>
<ul>
<li><a href="/UI/ProductUI.aspx/GetProductByCategory/<%: category.CategoryId %>"><%: category.CategoryName%></a></li>
</ul>
<% }%>
</div>
and my content page code is below: 我的内容页面代码如下:
protected void Page_Load(object sender, EventArgs e)
{
if (!IsPostBack)
{
int id = Convert.ToInt32(Request.QueryString["CategoryId"]);
GetProductByCategory(id);
}
}
ProductManager aProductManager=new ProductManager();
private void GetProductByCategory(int categoryId)
{
List<Product> products = aProductManager.GetProductByCategory(categoryId);
GridView1.DataSource = products;
GridView1.DataBind();
}
In the method GetProductByCategory
rename the parameter to int id
在方法GetProductByCategory
将参数重命名为int id
private void GetProductByCategory(int id)
{
List<Product> products = aProductManager.GetProductByCategory(id);
GridView1.DataSource = products;
GridView1.DataBind();
}
This would allow you to keep the <li><a href="/UI/ProductUI.aspx/GetProductByCategory/<%: category.CategoryId %>"><%: category.CategoryName%></a></li>
code as is and it should pick up the passed in CategoryId
as the id
这将允许您保留<li><a href="/UI/ProductUI.aspx/GetProductByCategory/<%: category.CategoryId %>"><%: category.CategoryName%></a></li>
代码照原样,它应该接收传入的CategoryId
作为id
In the default routes it's looking for an id
parameter. 在默认路由中,它正在寻找一个id
参数。
routes.MapRoute(
"Default", // Route name
"{controller}/{action}/{id}", // URL with parameters
new { controller = "Home", action = "Index", id = UrlParameter.Optional } // Parameter defaults
);
Otherwise @karl-anderson answer should work for you. 否则,@ karl-anderson答案将为您工作。
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