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If you are trying to generate a number that the user can easily speak over the phone or type into an email you want to consider the number of digits.
If you do:
YearsSince2000 , DayOfYear , MemberThatDay
You could have it be 2+3+3 = 8 digits, but you would limit the number of accounts created in a day to 1000 (and only 100 years), which may be too low. (Unless you choose a base higher than ten, but I don't recommend that.)
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Hi,
i would like to convert this DateTime format from
"Sat, 05 Dec 2009 14:37:55 GMT"
to
"05 Dec"
Please advice. Thanks 
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DateTime foo = DateTime.Now;
Console.WriteLine(foo.ToString("dd MMM"));
Should sort you out. I'm feeling helpful today, other people will probably just tell this stuff is easily googled (which it is).
CCC solved so far: 2 (including a Hard One!)
37!?!! - Randall, Clerks
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I want to validate a string containing the first name of a person.
The regegular expression should return a match if the first letter of the name is capitilized and
the rest are lowercase. The first name could also be multiple name.
sample:
John
John Raymond
Gary John Smith
Thanks a lot.
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Something like this?
([A-Z][a-z]*)(\s+[A-Z][a-z]*)*
Of course that'll fail for the more exotic names, but you can modify it.
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Thanks a lot. That's all I need.
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Top marks for J-C v-D!
CCC solved so far: 2 (including a Hard One!)
37!?!! - Randall, Clerks
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Hi All,
I am savitri here.New to this part of forum. I am doing one application for Psion Teklogix Device in VC# 2003.It is Windows CE 4.2. For that i am using Visual Studio 2003. I want to create database in device. I am not getting how to use sqlite operation in device programming. I am not getting any Dll's for that SQLite.
So please tell me how to create and connect in device level programming. Give me some hints or solution.I am searching alot but not got any result.Getting struck here only. please do needful for me.
Please tell me how to connect in C# using sqlite dll's.
Regards,
Savitri 
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I am trying to verify some domain names from our internal customer list. I am using Dns.GetHostAddresses but it doesn't seem to find half of the domains - many I can type into IE and up pops the web page. Is GetHostAddresses broken (I have tried the deprecated methods too and they don't seem to work either)
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Do you not want to use GetHostByName?
Regards,
Rob Philpott.
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That doesn't seem to work either - I get "The requested name is valid, but no data of the requested type was found" on even some quite well known domain names
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That's strange, as my understanding is that's what Internet Explorer etc. will call behind the scenes to resolve domain names. Sorry, as confused as you.
Regards,
Rob Philpott.
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can't you just ping them?
ping[^]
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I tried pinging some through the command console - some work, some don't.
So:
ping google.com works
ping microsoft.com doesn't
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I trust one can create a server that only supports some protocols (do/don't respond to PING, do/don't respond to HTTP, HTTPS, FTP, etc). And then the server could try and ignore false clients, those with strange or no "user agent" for instance. So I expect browsers to try several things behind the scenes, before giving you a "404".
If ping doesn't work for you and your targets are HTTP oriented, I would go with http://msdn.microsoft.com/en-us/library/system.web.httprequest.aspx[^]. You can ask for the HEAD only, without the BODY.
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Hi,
Summary: I need to draw lines between items in two DataGridViews to give a visual indication of source to target column mapping.
Details: First of all, I'm fairly new to DotNet and C# programming, but an experienced developer in other languages and technologies. This is my first post to CodeProject. I've read the FAQs, searched the articles, searched Google, and skimmed several forums before deciding on this one. If this is the incorrect forum, please gently and politely point me in the right direction and correct an honest mistake.
I need to write an application that will allow the user to map source columns to target columns, then generate syntactically correct SQL. For the UI, I was thinking of using two DataGridViews, plus the "dictionary tables" to populate the DataGridViews. For the SQL, I intend to use NVelocity or something similar.
My vision is the user will select a column from the source DataGridView and drag it to the target column in the target DataGridView.
What I can't work out is how to draw lines between the source and target columns to give the user a visual indication of the column mapping. This is especially true for columns mapped that are scrolled off the DataGridView, either top or bottom.
Picture another scenario: an online quiz. Questions on the left, answers on the right, drag the question to the correct answer to map the two.
Is there any example code in the public domain that does this, or something similar? Otherwise any design ideas are greatly appreciated.
Finally, I'm not married to using a DataGridView, so if there's a better UI element to use, please let me know.
Kind Regards,
Scott
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I'm making Yahtzee but I've 1 question:
I've 5 stones which must be generated randomly between 1 and 6.
If I've a 1,2,3,4 and 5 in this 5 stones it need's to display "GOOD" otherwise "LOST"
SO 2,1,3,5,4 is "GOOD"
SO 1,1,3,4,5 is "LOST"
How can I do this can somebody help me please with it  So I can go further. I must work with array'sin my opinion but didn't have much knowledge of them 
Hope somebody can improve my code or say how I must do it. (I'm learning)
My Code:
using System;<br />
using System.Collections.Generic;<br />
using System.ComponentModel;<br />
using System.Data;<br />
using System.Drawing;<br />
using System.Linq;<br />
using System.Text;<br />
using System.Windows.Forms;<br />
<br />
namespace W1<br />
{<br />
public partial class w1 : Form<br />
{<br />
public w1()<br />
{<br />
InitializeComponent();<br />
}<br />
<br />
private void w1_Load(object sender, EventArgs e)<br />
{<br />
<br />
}<br />
<br />
private void exitToolStripMenuItem_Click(object sender, EventArgs e)<br />
{<br />
Application.Exit();<br />
}<br />
<br />
private void btnDrop_Click(object sender, EventArgs e)<br />
{<br />
Random random = new Random();<br />
<br />
int randomNumber1C = random.Next(1, 7);<br />
int randomNumber2C = random.Next(1, 7);<br />
int randomNumber3C = random.Next(1, 7);<br />
int randomNumber4C = random.Next(1, 7);<br />
int randomNumber5C = random.Next(1, 7);<br />
lblDice1C.Text = "Dropped: " + randomNumber1C.ToString();<br />
lblDice2C.Text = "Dropped: " + randomNumber2C.ToString();<br />
lblDice3C.Text = "Dropped: " + randomNumber3C.ToString();<br />
lblDice4C.Text = "Dropped: " + randomNumber4C.ToString();<br />
lblDice5C.Text = "Dropped: " + randomNumber5C.ToString();<br />
if (randomNumber1C == 1 && randomNumber2C == 2 && randomNumber3C == 3 && randomNumber4C == 4 && randomNumber5C == 5 || randomNumber1C == 2 && randomNumber2C == 3 && randomNumber3C == 4 && randomNumber4C == 5 && randomNumber5C == 6)<br />
{<br />
lblDroppedC.ForeColor = System.Drawing.Color.Green;<br />
lblDroppedC.Text = "WON";<br />
}<br />
else<br />
{<br />
lblDroppedC.ForeColor = System.Drawing.Color.Red;<br />
lblDroppedC.Text = "LOST";<br />
}<br />
<br />
int randomNumber1 = random.Next(1, 7);<br />
int randomNumber2 = random.Next(1, 7);<br />
int randomNumber3 = random.Next(1, 7);<br />
int randomNumber4 = random.Next(1, 7);<br />
int randomNumber5 = random.Next(1, 7);<br />
lblDice1.Text = "Dropped: " + randomNumber1.ToString();<br />
lblDice2.Text = "Dropped: " + randomNumber2.ToString();<br />
lblDice3.Text = "Dropped: " + randomNumber3.ToString();<br />
lblDice4.Text = "Dropped: " + randomNumber4.ToString();<br />
lblDice5.Text = "Dropped: " + randomNumber5.ToString();<br />
if (randomNumber1 == 1 && randomNumber2 == 2 && randomNumber3 == 3 && randomNumber4 == 4 && randomNumber5 == 5 || randomNumber1 == 2 && randomNumber2 == 3 && randomNumber3 == 4 && randomNumber4 == 5 && randomNumber5 == 6)<br />
{<br />
lblDropped.ForeColor = System.Drawing.Color.Green;<br />
lblDropped.Text = "WON";<br />
}<br />
else<br />
{<br />
lblDropped.ForeColor = System.Drawing.Color.Red;<br />
lblDropped.Text = "LOST";<br />
}<br />
}<br />
<br />
private void label1_Click(object sender, EventArgs e)<br />
{<br />
<br />
}<br />
}<br />
}
Looks:
1 button
2x5 labels (1 Computer and 1 myself)
Both 5x stones need to be generated randomly each time you click on the button and then it's needs to check or you LOST OR LOSE
Dennis,
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As a suggestion, firstly don't use 5 seperate integers, use an array with 5 elements.
You could do the test a couple of ways. Firstly, sort the array, then check that two neighbouring elements do not contain the same number. That guarantees uniqueness.
Or, create five booleans, all false originally, then set the appopriate one on each iteration of a loop over the array. All booleans being set would signal uniqueness too.
Regards,
Rob Philpott.
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using System;<br />
using System.Collections.Generic;<br />
using System.ComponentModel;<br />
using System.Data;<br />
using System.Drawing;<br />
using System.Linq;<br />
using System.Text;<br />
using System.Windows.Forms;<br />
<br />
namespace W1<br />
{<br />
public partial class w1 : Form<br />
{<br />
public w1()<br />
{<br />
InitializeComponent();<br />
}<br />
<br />
private void w1_Load(object sender, EventArgs e)<br />
{<br />
<br />
}<br />
<br />
private void exitToolStripMenuItem_Click(object sender, EventArgs e)<br />
{<br />
Application.Exit();<br />
}<br />
<br />
private void btnDrop_Click(object sender, EventArgs e)<br />
{<br />
Random random = new Random();<br />
<br />
int randomNumber1C = random.Next(1, 7);<br />
int randomNumber2C = random.Next(1, 7);<br />
int randomNumber3C = random.Next(1, 7);<br />
int randomNumber4C = random.Next(1, 7);<br />
int randomNumber5C = random.Next(1, 7);<br />
<br />
int randomNumber1 = random.Next(1, 7);<br />
int randomNumber2 = random.Next(1, 7);<br />
int randomNumber3 = random.Next(1, 7);<br />
int randomNumber4 = random.Next(1, 7);<br />
int randomNumber5 = random.Next(1, 7);<br />
<br />
List<int> randomList = new List<int>();<br />
randomList.Add(randomNumber1);<br />
randomList.Add(randomNumber2);<br />
randomList.Add(randomNumber3);<br />
randomList.Add(randomNumber4);<br />
randomList.Add(randomNumber5);<br />
randomList.Sort();<br />
<br />
int last = 0;<br />
foreach (int itemInRandomList in randomList)<br />
{<br />
if (itemInRandomList == last || itemInRandomList - last != 1)<br />
{<br />
last = 0;<br />
break;<br />
}<br />
last = itemInRandomList;<br />
}<br />
<br />
if (last == 0)<br />
{<br />
lblDropped.ForeColor = System.Drawing.Color.Red;<br />
lblDropped.Text = "LOST";<br />
}<br />
else<br />
{<br />
lblDropped.ForeColor = System.Drawing.Color.Green;<br />
lblDropped.Text = "WON";<br />
}<br />
<br />
List<int> randomListC = new List<int>();<br />
randomListC.Add(randomNumber1C);<br />
randomListC.Add(randomNumber2C);<br />
randomListC.Add(randomNumber3C);<br />
randomListC.Add(randomNumber4C);<br />
randomListC.Add(randomNumber5C);<br />
randomListC.Sort();<br />
<br />
int lastC = 0;<br />
foreach (int itemInRandomList in randomListC)<br />
{<br />
if (itemInRandomList == lastC || itemInRandomList - lastC != 1)<br />
{<br />
lastC = 0;<br />
break;<br />
}<br />
lastC = itemInRandomList;<br />
}<br />
<br />
if (lastC == 0)<br />
{<br />
lblDroppedC.ForeColor = System.Drawing.Color.Red;<br />
lblDroppedC.Text = "LOST";<br />
}<br />
else<br />
{<br />
lblDroppedC.ForeColor = System.Drawing.Color.Green;<br />
lblDroppedC.Text = "WON";<br />
}<br />
<br />
lblDice1C.Text = "Dropped: " + randomNumber1C.ToString();<br />
lblDice2C.Text = "Dropped: " + randomNumber2C.ToString();<br />
lblDice3C.Text = "Dropped: " + randomNumber3C.ToString();<br />
lblDice4C.Text = "Dropped: " + randomNumber4C.ToString();<br />
lblDice5C.Text = "Dropped: " + randomNumber5C.ToString();<br />
<br />
lblDice1.Text = "Dropped: " + randomNumber1.ToString();<br />
lblDice2.Text = "Dropped: " + randomNumber2.ToString();<br />
lblDice3.Text = "Dropped: " + randomNumber3.ToString();<br />
lblDice4.Text = "Dropped: " + randomNumber4.ToString();<br />
lblDice5.Text = "Dropped: " + randomNumber5.ToString();<br />
<br />
lblDice1.Visible = true;<br />
lblDice2.Visible = true;<br />
lblDice3.Visible = true;<br />
lblDice4.Visible = true;<br />
lblDice5.Visible = true;<br />
lblDice1C.Visible = true;<br />
lblDice2C.Visible = true;<br />
lblDice3C.Visible = true;<br />
lblDice4C.Visible = true;<br />
lblDice5C.Visible = true;<br />
lblDropped.Visible = true;<br />
lblDroppedC.Visible = true;<br />
w1.ActiveForm.Size = new Size(316, 256);<br />
}<br />
<br />
private void rulesToolStripMenuItem_Click(object sender, EventArgs e)<br />
{<br />
MessageBox.Show("Rules");<br />
}<br />
}<br />
}<br />
<br />
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First as suggested previously you need a 5 long array of ints. The method described above (checking for uniqueness) won't work as (2,3,4,5,6) is unique but not winning.
You will also find your code improves vastly if you study OO and work out how to refactor. The two guidlines I try to live by [and often fail] are "Don't Repeat Yourself" "Keep It Simple Stupid" (DRY-KISS).
For example
int randomNumber1 = random.Next(1, 7);<br />
int randomNumber2 = random.Next(1, 7);<br />
int randomNumber3 = random.Next(1, 7);<br />
int randomNumber4 = random.Next(1, 7);<br />
int randomNumber5 = random.Next(1, 7);
Fails the DRY test.
I've separated out an example Yahtzee Roller class for you, this is one implementation of many possible and is not meant to be perfect. It contains an array of roll results, abd an array of winning values, these are compared. The amin program creates an instance of the roller, and proceeds to roll until a winning set is found.
The roller:
public class YahtzeeRoller
{
int[] rollResults = new int[]{0, 0, 0, 0, 0};
int[] WinningValues = new int[] { 1, 2, 3, 4, 5 };
Random random = new Random();
public bool IsWinning
{
get
{
return WinningValues.Except(rollResults).Count() == 0;
}
}
public string CurrentRoll
{
get
{
string result = "Roll =";
foreach (int rollResult in rollResults)
result += " " + rollResult;
return result;
}
}
public void Roll()
{
for (int i = 0; i < rollResults.Length; i++)
rollResults[i] = random.Next(1, 7);
}
}
Calling Program:
class Program
{
static void Main(string[] args)
{
YahtzeeRoller yahtzeeRoller = new YahtzeeRoller();
while (!yahtzeeRoller.IsWinning)
{
yahtzeeRoller.Roll();
Console.Write(yahtzeeRoller.CurrentRoll);
if (yahtzeeRoller.IsWinning)
Console.WriteLine(" Yahtzee!");
else
Console.WriteLine(" Not Yahtzee !");
}
Console.ReadKey();
}
}
Notice a few things. The re-factored code is shorter (and hopefully clearer) than the original. Additionally, it separates out the rolling functionality from the display [mostly] the use of CurrentRole property is debatable. You can now call Roll as many times as needed (it is not hard-coded), and if desired, easily change what constitutes a winning set of rolls.
I hope this helps!
CCC solved so far: 2 (including a Hard One!)
37!?!! - Randall, Clerks
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Hi,
- you have a single random generator, that is good.
- you don't need five or ten Labels, its much easier to show all five numbers in a single Label.
- you want to recognize not only "12345" but also all permutations thereof. Sorting the numbers is one way, but is unnecessary. The smart way to do this is by using a bit collection. Have a look at this:
int all=0;
all = all | (1<<number);
...
if (all==goodValue) output("WON");
Now try to use that to your advantage; the end result will be less than half the code you have now.
BTW: please use PRE tags, not CODE tags.
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