Configure Microsoft.AspNet.Identity to allow email address as username

asp.netasp.net-identity

I'm in the process of creating a new application and started out using EF6-rc1, Microsoft.AspNet.Identity.Core 1.0.0-rc1, Microsoft.AspNet.Identity.EntityFramework 1.0.0-rc1, Microsoft.AspNet.Identity.Owin 1.0.0-rc1, etc and with the RTM releases yesterday, I updated them via NuGet this evening to RTM.

Apart from a couple of code changes to the work I'd done so far, all seemed to be going well, until I tried to create a local user account for the app.

I had been working on e-mail addresses being the username format which with the release candidate worked great, but now when creating a user with an email address for a username, it throws up the following validation error:

User name xxxxx@xxxx.com is invalid, can only contain letters or digits.

I've spent the last hour or so searching for a solution or documentation on configuration options for it, but to no avail.

Is there a way I can configure it to allow e-mail addresses for usernames?

Best Answer

You can allow this by plugging in your own UserValidator on the UserManager, or just by turning it off on the default implementation:

UserManager.UserValidator = new UserValidator<TUser>(UserManager) { AllowOnlyAlphanumericUserNames = false }

Related Solutions

C# – How to get a user’s client IP address in ASP.NET

Often you will want to know the IP address of someone visiting your website. While ASP.NET has several ways to do this one of the best ways we've seen is by using the "HTTP_X_FORWARDED_FOR" of the ServerVariables collection.

Here's why...

Sometimes your visitors are behind either a proxy server or a router and the standard Request.UserHostAddress only captures the IP address of the proxy server or router. When this is the case the user's IP address is then stored in the server variable ("HTTP_X_FORWARDED_FOR").

So what we want to do is first check "HTTP_X_FORWARDED_FOR" and if that is empty we then simply return ServerVariables("REMOTE_ADDR").

While this method is not foolproof, it can lead to better results. Below is the ASP.NET code in VB.NET, taken from James Crowley's blog post "Gotcha: HTTP_X_FORWARDED_FOR returns multiple IP addresses"

protected string GetIPAddress()
{
    System.Web.HttpContext context = System.Web.HttpContext.Current; 
    string ipAddress = context.Request.ServerVariables["HTTP_X_FORWARDED_FOR"];

    if (!string.IsNullOrEmpty(ipAddress))
    {
        string[] addresses = ipAddress.Split(',');
        if (addresses.Length != 0)
        {
            return addresses[0];
        }
    }

    return context.Request.ServerVariables["REMOTE_ADDR"];
}

VB.NET

Public Shared Function GetIPAddress() As String
    Dim context As System.Web.HttpContext = System.Web.HttpContext.Current
    Dim sIPAddress As String = context.Request.ServerVariables("HTTP_X_FORWARDED_FOR")
    If String.IsNullOrEmpty(sIPAddress) Then
        Return context.Request.ServerVariables("REMOTE_ADDR")
    Else
        Dim ipArray As String() = sIPAddress.Split(New [Char]() {","c})
        Return ipArray(0)
    End If
End Function

Ios – NSString padding / space between characters

To do this correctly, taking into account the problems mentioned in David Rönnqvist's comment, do something like this:

NSMutableString* result = [origString mutableCopy];
[result enumerateSubstringsInRange:NSMakeRange(0, [result length])
                           options:NSStringEnumerationByComposedCharacterSequences | NSStringEnumerationSubstringNotRequired
                        usingBlock:^(NSString *substring, NSRange substringRange, NSRange enclosingRange, BOOL *stop){
     if (substringRange.location > 0)
         [result insertString:@" " atIndex:substringRange.location];
}];

Best Answer

Related Solutions

C# – How to get a user’s client IP address in ASP.NET

Ios – NSString padding / space between characters

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