You need to change the "membership" setting in Web.Config in order to able to see the password as text. Anyway it is not a good practice to save password as plain text.
After the change in setting...if you will register a new user, application will save the password as plain text. So to verify the approach, you need to register a new user and check. Following are the changes, we need to make:
1. Comment out existing membership provider:
<!--<membership defaultProvider="DefaultMembershipProvider">
<providers>
<add name="DefaultMembershipProvider" type="System.Web.Providers.DefaultMembershipProvider, System.Web.Providers, Version=1.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" connectionStringName="DefaultConnection" enablePasswordRetrieval="false" enablePasswordReset="true" requiresQuestionAndAnswer="false" requiresUniqueEmail="false" maxInvalidPasswordAttempts="5" minRequiredPasswordLength="6" minRequiredNonalphanumericCharacters="0" passwordAttemptWindow="10" applicationName="/" />
</providers>
</membership>-->
2. Add new provider:
<membership defaultprovider="MyMembershipProvider">
<providers>
<clear />
<add name="MyMembershipProvider"
type="System.Web.Providers.DefaultMembershipProvider, System.Web.Providers, Version=1.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"
connectionStringName="DefaultConnection"
maxInvalidPasswordAttempts="5"
passwordAttemptWindow="10"
minRequiredNonalphanumericCharacters="0"
minRequiredPasswordLength="4"
passwordStrengthRegularExpression=""
passwordFormat="Clear"
enablePasswordReset="true"
enablePasswordRetrieval="false"
requiresQuestionAndAnswer="false"
requiresUniqueEmail="true" />
</providers>
</membership>
You can see here passwordFormat="Clear", so password would not be encrypted any more for incoming user.
The parameter
type="System.Web.Providers.DefaultMembershipProvider, System.Web.Providers, Version=1.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"
must be valid....so you can use existing value of type as it was in the commented code as per point 1.
The value of "connectionStringName" must be valid so whatever name you have provided for connection string just use that one.
Hope it would help. Thanks.