Try to access URL parameter inside razor page-CodePudding

I send URL through a email to access a form with a parameter name "email". I try to access the email parameter inside the form razor page.

This is what I pass as URL 'https://localhost:44339/Home/[email protected]'

Then I access the email parameter by using ViewContext.RouteData.Values["email"]

<input type="email" required  name="Email" value="@(ViewContext.RouteData.Values["email"])">

But I can't access the parameter value by this method. It's return nothing.

CodePudding user response：

The recommended way to work with data passed in URLs is to use Model Binding. In this example, you should add a public property to your PageModel class representing the email and mark it with the BindProperty attribute, opting in to binding in GET requests:

[BindProperty(SupportsGet=true)]
public string Email { get; set; }

Then use an input tag helper to generate your input, assigning the public the asp-for attribute:

<input asp-for="Email"  />

the tar will take case of generating the correct name and attributes and will assign the value from the bound property.

More about model binding in Razor Pages: https://www.learnrazorpages.com/razor-pages/model-binding More about input tag helpers: https://www.learnrazorpages.com/razor-pages/tag-helpers/input-tag-helper

Note: you could also use Request.Query["email"], but model binding is the correct way to do this.

CodePudding user response：

Can you try this code : value="@ViewContext.RouteData.Values["email"].ToString()"