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asp.net

redirect http://mywebsite.com to http://www.mywebsite.com

I have a solution writted in C# in VS2010. When I type http://www.mywebsite.com in my browser, I am able to display my website successfully. When I type http://mywebsite.com in my browser, I am able to display my website but with some CSS problems. Because in my code I have some settings file where my website is recognised as 'http://www.mywebsite.com'. That's the story.

My question is: if user is typing http://mywebsite.com is there a way to redirect to http://www.mywebsite.com?

For example, if you type http://google.com it is automatically redirected to http://www.google.com

Thanks.

Solution

  • Add this to web.config:

    <rewrite>
<rules>
    <rule name="Redirect mywebsite.com to www" patternSyntax="Wildcard" stopProcessing="true">
        <match url="*" />
        <conditions>
            <add input="{HTTP_HOST}" pattern="mywebsite.com" />
        </conditions>
        <action type="Redirect" url="http://www.mywebsite.com/{R:0}" />
    </rule>
</rules>
</rewrite>

    In code-behind, you can also use something like (not tested)

    if(!Request.Url.Host.StartsWith("www"))
    Response.Redirect("http://www.mysite.com/" + Request.Url.LocalPath);

    but that would have to be on every page on on the MasterPage (if you have one) or slightly altered in Global.asax