Gets or sets the WS-Federation Passive Sign-in message that will be used to redirect the user to the identity provider.
Assembly: System.IdentityModel.Services (in System.IdentityModel.Services.dll)
You can change properties of the sign-in message to modify the request. For example, you can modify the BaseUri property in the sign-in message to change the identity provider to which the request will be redirected.
Available since 4.5