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Challenge: MD5 Checksum File Comparison
End date: May 30, 2011
Details: Create an application that will compare the MD5 of 2 different files to determine whether they are the same file or not.
Requirements: Must have room for at least (2) files to compare the MD5 hash. Your code also must be commented to help direct others through your code.
Optional: You can add an area where you can convert the MD5 Hash of a file to a text string in correct MD5 format. (Ex: Display in a textbox, label...)

How to enter:
Enter by responding to this thread stating are going to attempt this challenge. Do not PM me.

How to submit:
Submit by using a spoiler tag to hide you submission. Include a screen shot, the source code in {code} tags, a download link to the project. (Optional but preferred)

Choosing a winner:
If you complete this.. then you are a winner. This is not a contest to see who 'coded the best'. This is a challenge to see if you can complete it. Visual is Optional, but it will make your program look nice to the SF community.

Disclaimer:
This is meant to be fun and constructive. By submitting your code for this challenge you agree not to get butt-hurt if somebody criticizes your work. Take the criticism, learn from it, and move on. Also, all comments made should be constructive. NO FLAMING ALLOWED. All flaming attempts will be reported.

To everyone: Good luck.

Submissions: Downloads Included
Fragma [Download]
The High Roller [Download]
Infinity [Download]
KoBE [Download]
*dudesons123: completed a file byte size comparison but not the MD5 hash comparison [Download]

I started working on this today a few hours ago, but it seemed like it would be a very useful desktop application as well. So if you do end up coding this, then you'll be happy that you finished the program, and also, you'll be able to put it to good use on your computer Smile

This is a lot easier than the last challenge. Tongue

(04-18-2011, 08:59 AM)Fragma Wrote: [ -> ]This is a lot easier than the last challenge.

Indeed Fragma, I will enjoy this project. Infinity, does GUI matter?

Ill start on it, this is mutch more fun/and easier than the pig latin.

My Submission:

Spoiler (Click to View)

Screenshot:
[Image: 4caea4f26bf5cf80a050751d78d71f3e.png]

Download Link:

Code:
http://www.mediafire.com/?cp96hb8n4wx4uhn

Source Code:

Code:
Public Class Form1

    Public Function VerifyMD5HashCode(ByVal filepath As String) As String

        Using verifythefile As New System.IO.FileStream(filepath, IO.FileMode.Open, IO.FileAccess.Read)

            Using themd5code As New System.Security.Cryptography.MD5CryptoServiceProvider

                Dim thahash() As Byte = themd5code.ComputeHash(verifythefile)

                Return ByteArrayToString(thahash)

            End Using

        End Using

    End Function

    Private Function ByteArrayToString(ByVal arrInput() As Byte) As String

        Dim StringBuilder As New System.Text.StringBuilder(arrInput.Length * 2)

        For i As Integer = 0 To arrInput.Length - 1

            StringBuilder.Append(arrInput(i).ToString("X2"))

        Next

        Return StringBuilder.ToString().ToLower

    End Function

    Private Sub Button3_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button3.Click

        MD5Hash1.Text = VerifyMD5HashCode(filepath1.Text)

        MD5Hash2.Text = VerifyMD5HashCode(filepath2.Text)

        If filepath1.Text = filepath2.Text Then

            MsgBox("The selected files are the same.", 64, "File Comparison Result")

            TrueResults.Text = "Both Files Are Identical"

            TrueResults.ForeColor = Color.LimeGreen

        Else

            MsgBox("The selected files are different.", 48, "File Comparison Result")

            TrueResults.Text = "Both Files Are Unidentical"

            TrueResults.ForeColor = Color.Red

        End If

    End Sub

    Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click

        SelectFiles.ShowDialog()

        SelectFiles.Title = "Select File #1..."

    End Sub

    Private Sub SelectFiles_FileOk(ByVal sender As System.Object, ByVal e As System.ComponentModel.CancelEventArgs) Handles SelectFiles.FileOk

        Dim file1 As String = SelectFiles.FileName

        filepath1.Text = file1

    End Sub

    Private Sub Button2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button2.Click

        SelectFiles2.ShowDialog()

        SelectFiles2.Title = "Select File #2..."

    End Sub

    Private Sub SelectFiles2_FileOk(ByVal sender As System.Object, ByVal e As System.ComponentModel.CancelEventArgs) Handles SelectFiles2.FileOk

        Dim file2 As String = SelectFiles2.FileName

        filepath2.Text = file2

    End Sub

    Private Sub filepath2_TextChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles filepath2.TextChanged

        Button3.Enabled = True

    End Sub

    Private Sub PictureBox1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles PictureBox1.Click

        Process.Start("http://www.supportforums.net/member.php?action=profile&uid=4502")

    End Sub

End Class

Now this is what I call useful for something in the future. Great idea Infinity.

The High Roller for the love of god stop using that text! The coded by you part. It's soo ugly trust me.
Interesting code though, I've never made something like this before.

I have mine working. The code is really bad, as I haven't coded anything for like 6 months, but yeh it works so I don't care lol...

Just working on a nice GUI now, I'll post it up later on today.

(04-18-2011, 10:28 AM)Untouch Wrote: [ -> ]The High Roller for the love of god stop using that text! The coded by you part. It's soo ugly trust me.
Interesting code though, I've never made something like this before.

I love you too Untouch, but my GUI is never good. Never focusing on it until I make a legitimate release that is super awesome. It is a simple link to credits... Chillax. It is an easy text signature picture to create.

(04-18-2011, 10:30 AM)The High Roller Wrote: [ -> ]I love you too Untouch, but my GUI is never good. Never focusing on it until I make a legitimate release that is super awesome. It is a simple link to credits... Chillax. It is an easy text signature picture to create.

Anything that looks bad bugs me! lol

(04-18-2011, 10:37 AM)Untouch Wrote: [ -> ]Anything that looks bad bugs me! lol

I've noticed, but that is a good thing. I sure hope you know your thing with colors fluently. POP QUIZ! What colors match with orange!

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AceInfinity

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Fragma

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