Creating Webservice with webmatrix - asp.net

Question

this time i learn how to create webservice with webmatrix.
I try learn from this link :
http://www.microsoft.com/web/post/creating-a-webservice-with-webmatrix-and-consuming-it-with-a-windows-7-phone-application
but i stuck because author didn't sample source code.
This is my getproduct.cshtml code :
#{
public class Product {
public string Name {get; set; }
public int Price {get; set; }
}
public static Product GetProducts(string price) {
var db = Database.Open("WebService");
var selectQueryString = "SELECT Name, Score FROM Users WHERE Score >= " + #price;
var data = db.Query(selectQueryString);
Product product = new Product();
foreach (var row in data) {
product.Name = #row.Name;
product.Price = #row.Score;
}
return product;
}
}
This is my jsonRequest.cshtml code :
#{
var price = Request.QueryString["price"];
if (price == null || price == string.Empty) {
<p>Please enter a Price value</p>
} else {
var product = getproduct.GetProducts(price);
Json.Write(product, Response.Output);
}
}
okay and last i run http://localhost:55278/jsonRequest.cshtml, but there are two error for me, that are :
1. that address there is no QueryString, and code just past if to else.
2. error in getproductGetProduct(price);
CS0117: 'ASP.getproduct' does not contain a definition for
'GetProduct'
please help me, how to solve my problem, so that i can finish that tutorial from that link.
thank you
---UPDATE----
this is my folder
Test Webservice
|-jsonRequest.cshtml
|-App_Code
|-getproduct.cshtml

Answer 1

The first issue I can see is just one of case-sensitivity:
var product = getproduct.GetProduct(price);
Should be:
var product = getProduct.GetProduct(price);
The object name is case-sensitive and must be exactly the same as the name of the .cshtml file in the App_Code folder.
You seem to have edited your question to show that the case was correct originally, so the next problem I see is in the name of your method being plural. Your method signature is:
public static Product GetProducts(string price)
So you need to change:
var product = getproduct.GetProduct(price);
To:
var product = getproduct.GetProducts(price);
In your getproduct.cshtml you need to change the opening of the block from #{ to #functions {.
I know you're only following a tutorial too so this is just an aside, but that code looks absolutely ripe for an SQL injection hack to me.