CODEWITHSUNDEEP
asp.net-coremvvmrazor-pages
Ali Naeimi
Ali Naeimi

Reputation: 622

Passing route parameters in .Net Core razor pages

I want to pass parameters to OnGet() method but it's not stable and everytime is different, For example:

test.com/book
test.com/book/page/word
test.com/book/page
test.com/book/page/word/...

the parameters are not stable and are created dynamically.

How can I handle this problem?

Upvotes: 2

Views: 6171

Answers (1)

Métoule
Métoule

Reputation: 14472

You can handle this with the @page directive.

There are several options based on your actual needs.

You know the structure of your URL in advance

In your .cshtml page, you add the @page directive, with each optional parameter followed by a question mark. Note that you can also specify constraints to specify that a particular parameter needs to be a certain type like an integer (e.g. here line is an optional integer). 

@page "/book/{pageName?}/{line:int?}/{word?}"

In your model class, you add nullable optional parameters matching the names in the @page directive:

public void OnGet([FromRoute] string pageName= null, [FromRoute] int? line = null, [FromRoute] string word = null)
{
    // TODO handle parameters
    // note that line is guaranteed to be an integer
}

You don't know the exact structure of your URL

In that case, you can use a wildcard parameter, specified with a star before the parameter name:

@page "/book/{*content}"

public void OnGet([FromRoute] string content= null)
{
    // TODO handle content
}

In that case, content will contain the entire string passed after /book/, forward slashes included, such as page/word/5/test. You can then process it depending on your needs.

Upvotes: 7

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