Using Custom Membership Provider in WinForms

Hello,

I would like to use my custom membership provider (which is working in my asp.net application) in my windows forms application.

I thought this would be relatively straight forward, and followed these steps:

1. Copied MembershipProvider class into my application.
2. Add reference to System.Web
3. Create app.config with membership settings i.e:

Code:

---

<configuration>
  <configSections>
  </configSections>
 
    <system.web>
      <authentication mode="Forms">
        <forms name=".ASPXFORMSAUTH" />
      </authentication>
      <machineKey validationKey="*****" /> <!-- Removed for example -->
      <membership defaultProvider="CurveMembershipProvider">
        <providers>
          <clear />
          <add name="CiseroMembershipProvider"
              type="CiseroMembershipProvider"
              applicationName="CurveWin"
              connectionStringName="CurveWin"
              passwordFormat="Hashed"/>
        </providers>
      </membership>
    </system.web>

---

I have some code where I need to validate the user against the database:

Code:

---

Public Function RenewLicense(ByVal username As String, _
                                ByVal password As String) As Boolean

        ' TODO: validate user, get license key and expiry date

        If Membership.ValidateUser(username, password) Then
            Dim User As CiseroMembershipUser = System.Web.Security.Membership.GetUser
            License = New License

---

Membership.ValidateUser is a member of system.web.security. My class method for ValidateUser should be called here, but I get the following message:

Could not load type 'CiseroMembershipProvider' from assembly 'System.Web, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a'.

This also happened at one time in my asp.net application, but was easily solved by moving the class to the app_code folder.

I have tried changing the type setting of the membership provider to MyApp.CiseroMembershipProvider, but I still get the error.

I also noticed that the class initialize method was not being called, so I added the following:

Code:

---

System.Web.Security.Membership.Provider.Initialize("CiseroMembershipProvider", ConfigurationManager.AppSettings)

---

The same error occurs.

Does anyone know a solution?

:afrog:

Thanks for reading

Hi,

Could you solve this issue?
I have same error in my winform app.
Any information would be apreciated.

Regards,
Satomi

hello, still no one knows?

Regards...SiViN

I finally found the answer from http://juniorpropellerhead.blogspot....-winforms.html

For me, it was changing the provider string from

Code:

---

<add name=MyCustomProvider" type="MyCustomLibrary.Provider.CustomProvider" ...

---

to

Code:

---

<add name=MyCustomProvider" type="MyCustomLibrary.Provider.CustomProvider, MyCustomLibrary" ...

---

If I interpret the article correctly, it was looking for my custom provider in System.Web by default. Instead, you need to add the , MyCustomLibrary to tell it to look for your provider there.