Question

I have the following code:

@helper RetrievePhotoWithName(int userid)
{
    var database = Database.Open("SC");
    var name = database.QuerySingle("select FirstName, LastName, ProfilePicture from UserProfile where UserId = @0", userid);
    var notifications =  database.Query("SELECT COUNT(*) FROM NotificationsTable WHERE UserID = @0 AND MessageWasRead = @1", userid, false);

    var DisplayName = "";
    if(notifications < 1)
    {
        DisplayName = name["FirstName"] + " " + name["LastName"];
    }
    else
    {
        DisplayName = name["FirstName"] + ", you have " + notifications + " new messages.";
    }
    <a href="@Href("~/Home")" title="My Account"><img src="@Href("~/Shared/Assets/Images/" + name["ProfilePicture"] + ".png")" id="MiniProfilePicture" />&nbsp;@DisplayName</a>

    database.Close();
}

which is supposed to count all the rows in my table and either display a “new notifications” message to the user on the web page or just display their name, but it’s not working.

Do not edit this question. The reason I am re-posting this question is because my previous one was changed which resulted in inaccurate responses.

Answer 1

Since SELECT COUNT(*) is returning a single scalar value, I think you want to use database.QueryValue() instead:

int notifications =  (int)database.QueryValue("SELECT COUNT(*) FROM NotificationsTable WHERE UserID = @0 AND MessageWasRead = @1", userid, false);

http://msdn.microsoft.com/en-us/library/webmatrix.data.database.queryvalue(v=vs.99).aspx