I Write this code in ListHandlerfile.cs.
protected override void PrepareQuery(SqlQuery query)
{
base.PrepareQuery(query);
var PR = ProviderCredentialingFormRow.Fields;
var connection = SqlConnections.NewByKey("Default");
var user = connection.TryFirst<ProviderRegistrationRow>(ProviderRegistrationRow.Fields.UserId == User.GetIdentifier());
var team = user.TeamId;
query.Where(PR.TeamId == (Int32)team);
}
But I got this error Nullable object must have value. How I clear It?