Get Value From Custom URL

Question

User-698989805 posted

Hello friends! I run into a simple issue. I've a url where I can retrieve its value with the following if it's like this - AddUsers?user=USER-5678

string id = Request.QueryString["user"];

But when I customize it like this - AddUsers/user/USER-5678; Then unable to retrieve the value. Any better way to get the value? I know, there's and can't figure out at the moment and get null for the customized url. 

Answer 1

User475983607 posted

Hello friends! I run into a simple issue. I've a url where I can retrieve its value with the following if it's like this - AddUsers?user=USER-5678

string id = Request.QueryString["user"];

But when I customize it like this - AddUsers/user/USER-5678; Then unable to retrieve the value. Any better way to get the value? I know, there's and can't figure out at the moment and get null for the customized url. 

Correct and the expected behavior!  The second URL is commonly found in an application that supports routing.  What kind of application are you building; MVC, Web API, Web Forms?  Can you share code that reproduces the problem?

Answer 2

User-698989805 posted

That's for WebForm @mgebhard. It says - object reference not set to an instance of an object.

Answer 3

User475983607 posted

TechView

That's for WebForm @mgebhard. It says - object reference not set to an instance of an object.

What says?

And are you using routing in Web Forms?  Did you write custom code?  Is there anyway you can share code that reproduces the issue?

Answer 4

User-698989805 posted

Here it's - Custom url rewriting in the Global.asax:

routes.MapPageRoute("addUsersWithId", "AddUsers/{user}/{userCode}", "~/AddUsers.aspx");

Here is the link to redirect:

<ItemTemplate>
    <asp:HyperLink ID="HPlink" runat="server" Target="_self" Text="Edit" ForeColor="SteelBlue" NavigateUrl='<%# "AddUsers/user/" + Eval("userCode") %>'></asp:HyperLink>
</ItemTemplate>

Answer 5

User475983607 posted

Here it's - Custom url rewriting in the Global.asax:

routes.MapPageRoute("addUsersWithId", "AddUsers/{user}/{userCode}", "~/AddUsers.aspx");

Here is the link to redirect:

<ItemTemplate>
    <asp:HyperLink ID="HPlink" runat="server" Target="_self" Text="Edit" ForeColor="SteelBlue" NavigateUrl='<%# "AddUsers/user/" + Eval("userCode") %>'></asp:HyperLink>
</ItemTemplate>

This is not custom URL rewriting it's routing.  Also, you still have not provided the code to reproduce the issue... where is the code that fetches the route!

Does you code look like this?

Page.RouteData.Values["userCode"]

Or this?

<asp:Literal ID="Literal1" Text="<%$RouteValue:userCode%>" runat="server"></asp:Literal>

Perhaps try reading the openly published documentation.

https://msdn.microsoft.com/en-us/library/dd329551.aspx?f=255&MSPPError=-2147217396

Answer 6

User-698989805 posted

Thanks a lot @mgebhard. Found out from your solution - Finally this worked I mean that you provided:

Page.RouteData.Values["userCode"]