ASP.NET : get value from url-CodePudding

I'm trying to get a value from the URL and save it to a value but any attempt I've made has failed.

Here is an example of the URL:

https://localhost:44325/deals/PostDeal?id=101

I want to save the value of id to DealsMasters.DealItemID.

Here is what I have been working with

string baseUrl = string.Format("{0}://{1}",
                               HttpContext.Request.Scheme, HttpContext.Request.Host);

var query = HttpUtility.ParseQueryString(baseUrl.Query);

var var2 = query.Get("var2");

DealsMasters.DealItemID = var2;

CodePudding user response：

I think you're complicating it more than necessary. HttpContext.Request already has a QueryString property you can get the individual parameters from:

var idParam = HttpContext.Request.QueryString["id"];
DealsMasters.DealItemID = int.Parse(idParam); // Note: this will fail if 'id' is not an integer

To address the errors you see:

'string' does not contain a definition for 'Query' [...]

The baseUrl you have defined is a string and strings do not have a Query property so you cannot do baseUrl.Query.

Cannot implicitly convert type 'string' to 'int'

query.Get("id") returns a string, since all parts of a URL are handled as strings. If you know that part of the URL is an integer, you need to convert/parse it, such as using int.Parse(string) like I did above.

CodePudding user response：

You only need to add a parameter which name is id to OnPostAsync:

public async Task<IActionResult> OnPostAsync(int id)
{
    DealsMasters.DealItemID = id;
    ...
}