Posts by DaveAmour

You can set this in your web.config eg:

  <system.web>
    <customErrors mode="Off" ></customErrors>
    <compilation debug="true" targetFramework="4.5" ></compilation>
    <httpRuntime targetFramework="4.5" ></httpRuntime>
    <authentication mode="Forms">
      <forms loginUrl="~/Account/Login" timeout="2880" ></forms>
    </authentication>
    <pages>
      <namespaces>
        <add namespace="System.Web.Helpers" ></add>
        <add namespace="System.Web.Mvc" ></add>
        <add namespace="System.Web.Mvc.Ajax" ></add>
        <add namespace="System.Web.Mvc.Html" ></add>
        <add namespace="System.Web.Optimization" ></add>
        <add namespace="System.Web.Routing" ></add>
        <add namespace="System.Web.WebPages" ></add>
      </namespaces>
    </pages>
  </system.web>

Should $ITEM be inside the speech marks?

You're welcome.

When we are using Entity Framework as our data access choice to work with SQL Server then there are some potential pitfalls.

One of these pitfalls is doing selective includes. What do I mean by selective includes?

To answer that let's first look at our class and database model.

Lets suppose we have some customers and some invoices in our application. Our database schema and model classes could look like this:

And we may have data like this:

Now suppose we wanted to select all customer records and their invoices raised in August 2014. With plain SQL we might do something like this:

And from there we could create one customer object in C# for Mary and load in 3 invoice objects into her Invoices collection. Nice and simple.

In Entity Framework our first go at coding this problem might look something like this:

If we run this and debug it though we see that all invoices have been loaded as seen below:

The reason for this is that our code in plain English is actually saying get Customers where they have any invoices in August 2014 and include invoices.

Entity Framework will actually include all of the Invoices though - the where clause is just acting on customers - ie select customers who have …

Hi Michael

Ok thanks, I shall check tomorrow.

Meanwhile do excuse my sarcasm, it increases proportionatley with age, I do like your site very much though!

Also it also seems FF doesn't like "scroll" - try renaming your function to something else.

Actually it might be that you closed your a tag twice.

Remove the / at the end of the first part of the a tag.

Works for me: https://jsfiddle.net/xyt0527j/

FF Version 33.1.1

Ok thanks Dani, awaiting email with excitement!

I finally saw a paypal button on my $Rewards.

Perhaps rather optimistically I clicked on it.

The page then changed to show the following:

"Last Cash Out: Pending for $5.58"

Any ideas anyone.

I keep all my stuff in source control that way its always backed up in the cloud - a good habit to get into.

Have you actually used your IsNumeric function?

Here's my go:

    <script>
        function CustomDate()
        {
            this.date = new Date();  
            this.dayPart = this.date.getHours() < 12 ? "AM" : "PM";

            this.toString = function()
            {
                return this.date.getMonth() + "/" + this.date.getDate() + "/" + this.date.getFullYear()
                    + " - " + this.date.getHours( ) + ":" + this.date.getMinutes()
                    + ":" + this.date.getSeconds() + " " + this.dayPart;
            };
        }

        var d = new CustomDate();

        alert(d);
    </script>

Not sure if this is what you mean or not but try setting the following on topwrapper div:

position: fixed;
top: 1px;
background-color: #414141

Does that help?

Hi

I'm not a Java Programmer so can't comment on the specifics of your code. However, you should not have any UI code in such a class as it is then tightly coupled to that particular UI.

UI operations should be done outside of this class and you should interact with instances of this class to set and read data.

Can you be a little more specific.

For example have you already

a) Created a MVC project?
b) Created a Controller?
c) Created a Controller Action?
d) Created a View

And so on...

What do you mean by manually?

Finally had a good chance to look at your earlier post which ypo commented as:

"Troy, I may be wrong, but I think Dave was only trying to wrap all of Cat's code inside the Cat function.

And there's a way of doing something similar to it:"

I like your code as it is well encapsulated, thanks!

Thanks AleMonteiro, that's very useful.

Youre welcome, any exucse to play around with Linq!

Just realised that if I add some properties then I am getting the state of my object output. See codebelow. It is not telling me anything about fucntions or prototypes thouhg. Is this what you would expect?

<script>
    function Animal(name, age)
    {
        this.breathe = function ()
        {
            alert("I am breathing");
        };

        this.eat = function ()
        {
            alert("I am eating");
        };

        this.sleep = function ()
        {
            alert("I am sleeping");
        };

        this.name = name;
        this.age = age;
    }

    var _log = function (label, obj)
    {
        if (typeof console.log === 'function')
        {
            console.log(label + ": " + JSON.stringify(obj, undefined, '\t'));
        }

        document.write(label + ": " + JSON.stringify(obj, undefined, '\t'));
    };

    var cat = new Animal("Joey", 14);

    _log("Animal", cat);

</script>

I was trying your _log function.

Do I need to include a JSON library for this?

When I put your code in a page with nothing else, I see there is a JSON object there with a stringify function.

I just get an empty object logged though.

Can you explain please?

Thanks

<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
    <title></title>
</head>
<body>
    <script>
        function Animal()
        {
            this.breathe = function ()
            {
                alert("I am breathing");
            };

            this.eat = function ()
            {
                alert("I am eating");
            };

            this.sleep = function ()
            {
                alert("I am sleeping");
            };
        }

        var _log = function (label, obj)
        {
            if (typeof console.log === 'function')
            {
                console.log(label + ": " + JSON.stringify(obj, undefined, '\t'));
            }
        };

        var cat = new Animal();

        _log("Animal", cat);

    </script>
</body>
</html>

Yes I know all about the chimps thanks!

Hi

Sorry for the late replay, out all day yesterday.

The compact shorthand I have used here is called a Method Group.

To really understand this I would type for about 10 pages or if you have time watch these videos in this order. Will take a while but they are really high quality and very enjoyable.

https://www.youtube.com/watch?v=v6Zb0nD7PHA&index=1&list=PLdbkZkVDyKZVvizO94tJNmTfRzXWGDFZ3

https://www.youtube.com/watch?v=0nd-tcQcslc&list=PLdbkZkVDyKZVvizO94tJNmTfRzXWGDFZ3&index=2

https://www.youtube.com/watch?v=0qnwc5XqVs0&list=PLdbkZkVDyKZVvizO94tJNmTfRzXWGDFZ3&index=3

https://www.youtube.com/watch?v=WJItr-ecdCE

https://www.youtube.com/watch?v=OqSXsmAAZcw

Finally consider the following progression - think of that image of an ape gradually evolving into a human!

//var lettersOnly = String.Join("", word.ToLower().Where(delegate(char c) { return Char.IsLetter(c); }));
//var lettersOnly = String.Join("", word.ToLower().Where((char c) => { return Char.IsLetter(c); }));
//var lettersOnly = String.Join("", word.ToLower().Where(c => { return Char.IsLetter(c); }));
//var lettersOnly = String.Join("", word.ToLower().Where(c => Char.IsLetter(c)));
var lettersOnly = String.Join("", word.ToLower().Where(Char.IsLetter));

How about this:

using System;
using System.Linq;

namespace Palindrome
{
    public class Program
    {
        static void Main(string[] args)
        {
            Console.WriteLine("racecar: " + "racecar".IsPalindrome());
            Console.WriteLine("dad: " + "dad".IsPalindrome());
            Console.WriteLine("mum: " + "mum".IsPalindrome());
            Console.WriteLine("dog: " + "dog".IsPalindrome());
            Console.WriteLine("floor: " + "floor".IsPalindrome());
            Console.WriteLine("Racecar: " + "Racecar".IsPalindrome());
            Console.WriteLine("Rac ecar: " + "Rac ecar".IsPalindrome());
            Console.WriteLine("Racecar': " + "Racecar'".IsPalindrome());

            Console.ReadKey();
        }
    }

    public static class StringExtensions
    {
        public static bool IsPalindrome(this string word)
        {
            var lettersOnly = String.Join("", word.ToLower().Where(Char.IsLetter));

            var reversedWord = String.Join("", lettersOnly.Reverse());

            return lettersOnly == reversedWord;        
        }
    }
}

Just managed to have a quick play around. Off to work in a mo though.

I realise that one of my problems is that when I am tinkering with code and trying out different ides I like to inspect my objects to see what has actually happened. For this I use a combination of Visual Studio and browser consoles/developer tools.

These all seem to give different results thouhg - look at the screen dumps I collected all looking at the same web page and object. How do you guys cope with this? What do you use for the truth about an object?

Another easy performance improvement with your current code - use a paralyzed foreach. These can add a lot of performance very easily.

Hi guys

I haven't forgot about this thread. I am busy the next 2 days but will have a good play around with your ideas on Sunday.

Thanks to everyone who has understood my original question and posted useful and constructive comments, much appreciated.

I haven't done this for a long time but used to use something called Index Server. This indexed certain folders which you specified and you queried index server much like you query a database - this was mainly for searching file contents I think.

You can certainly see what kind of simillar technologies are available these days. Depends if you are searching file names/types only or contents as well.

Also how often do your folder contents change? If not too often then caching is a defination consideration.

Also are you searching just in file names or contents as well?

If just the former you could cache the whole thing in memory and even cache search results in memory too so if person a searches the same as person b did 10 minutes ago then the results are there in memory already.

Hope that helps.

If you are iterating over a collection which has enumerable properties then you can use foreach. For example:

foreach (var customer in customers)
{
    Console.WriteLine(customer.FirstName + " " + customer.LastName);
}

You could also achieve the same with a for loop:

for (var i = 0; i < customers.Count; i ++)
{
    Console.WriteLine(customers[i].FirstName + " " + customers[i].LastName);
}

In this case the first is more readable and easier to code right?

If you want to do a loop for some other reason though such as not iterating over a collectio but doing something x times then maybe a for loop is better. Also a for loop gives you access to the number of iterations you are on. So if you want to output:

1 Dave Amour
2 Fred Bloggs
3 Sarah Smith

Then there may be a case for using a for loop - it's up to you to make that call though.

Note - in order to be able to use foreach then the collection you are iterating over must implement IEnumberable or IEumerable<T>. Almost all collections do.

Here is a console app you can tinker with.

using System;
using System.Collections.Generic;

namespace ForeachVerusForLoop
{
    class Program
    {
        static void Main(string[] args)
        {
            var customers = GetCustomers();

            foreach (var customer in customers)
            {
                Console.WriteLine(customer.FirstName + " " + customer.LastName);
            }

            for (var i = 0; i < customers.Count; i ++)
            {
                Console.WriteLine(customers[i].FirstName + " " + customers[i].LastName);
            }

            Console.ReadKey();
        }

        static List<Customer> …

I think web.archive.org doesn't work as well as it used to.

Are there any alternatives to that?

Don't know if this is any help but this works for me.

Connection string is:

<add name="OracleConnection" connectionString="User Id=MyUserId; password=MyPassword; Data Source=MyServer:1521/orcl.MyUrl.co.uk; Pooling=false;"/>

And code is:

        private static IEnumerable<Document> GetDocuments(string selectText)
        {
            var documents = new List<Document>();

            using (var oracleConnection = new Oracle.ManagedDataAccess.Client.OracleConnection(ApplicationConfiguration.ConnectionString))
            {
                using (var oracleCommand = new Oracle.ManagedDataAccess.Client.OracleCommand(selectText))
                {
                    oracleCommand.CommandType = CommandType.Text;

                    oracleCommand.Connection = oracleConnection;

                    oracleConnection.Open();

                    using (var reader = oracleCommand.ExecuteReader())
                    {
                        while (reader.Read())
                        {
                            var doc = new Document
                                {
                                    DocId = reader.GetInt32(0),
                                    DocumentType = (DocumentType) Enum.Parse(typeof (DocumentType), reader.GetString(1)),
                                    DateStored = reader.GetDateTime(2),
                                    ImageBlob = (MemoryStream) reader.GetStream(3)
                                };

                            documents.Add(doc);
                        }
                    }
                }
            }

            return documents;
        }

The question is really about if statements and counters.

We could be counting bananas instead.

The questions of whether zero is positive or negative or neither has already been dealt with by mathematicians.

Thanks Dani

Whether zero is positive, negative or neither is outside the scope of this question.

You can also do thing like this:

Delete From Agents

Where Id = 2

And (Select Count(*) From Agents) > 1

I accidentally clicked on:

Click here to no longer receive any community emails from DaniWeb.

In an email I received.

How can I undo this?

Is it the checkbox in edit profile - Receive Occasional Community-related Email?

Thanks

Delete Line 30, 31 and 33

Move Line 32 to after your loop

Change "else if ( Number <0)" to "else" - no need to check as it must be less than 0

I'm really sorry but your sentence doesn't make much sense.

Try writing it in your native langauge and then running it through google translate maybe?

That's a bootstrap menu.

http://www.w3schools.com/bootstrap/bootstrap_case_navigation.asp

What does it return then?

Is it working or Erroring?

In what way is it not working?

That already is ajax. Can you be more specific?

Sorry I still don't understand.

I think to do this you need to do a cartesian join with the table on itself and implement the where condition.

Sorry I don't understand what you are asking :(

Ok so what's the actual problem?

You can call a function from anywhere.

You can call a function from main and this function inside it's body can call other functions. Those other functions can also call functions. This is how you build up complex applications.

A recursive function is one that calls itself. This is often used for things like traversing a directory structure or things of that nature.

There are many good tutorials on this.

Check out the following for example.

http://www.zentut.com/c-tutorial/c-recursive-function/
http://www.programiz.com/c-programming/c-recursion
http://www.cprogramming.com/tutorial/lesson16.html

Hope that helps.

Hi TekknoDraykko

I wasn't really suggesting the use of Nuget in the way you think. I was just asking if Suzie used it to load other 3rd party libraries.

However you can use Nuget to load components from your own private repository. This would probably most useful in a corporate environment.

There are articles out there already so no point in me re-inventing the wheel.

This looks like a good article:

https://docs.nuget.org/create/hosting-your-own-nuget-feeds