# Delegate ProvideClientCertificatesCallback

Namespace
  Npgsql

Assembly
  Npgsql.dll

Represents a method that allows the application to provide a certificate collection to be used for SSL client authentication

    public delegate void ProvideClientCertificatesCallback(X509CertificateCollection certificates)

#### Parameters

`certificates` X509CertificateCollection

  A X509CertificateCollection to be filled with one or more client certificates.