Re: c# - C# Discussion Boards

Re: c#

Colin Angus Mackay11-Jul-07 5:27

Colin Angus Mackay

11-Jul-07 5:27

sinji_solanki wrote:
enter a number and display next 5 prime numbers.

You should attempt your homework questions yourself. If you get stuck post the code and we'll help you out. However, we ain't gonna do it for you.

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Re: c#

PhilDanger11-Jul-07 5:30

PhilDanger

11-Jul-07 5:30

bool finished = false;
while(!finished){
      Console.WriteLine("Please enter a number: ");
      string startNumber = Console.ReadLine();
      if(startNumber == "1"){
              Console.WriteLine("2 3 5 7 11");
              finished = true;
      } else {
              Console.WriteLine("Please enter \"1\" instead");
      }
}

Enjoy your A+!

Re: c#

Leslie Sanford11-Jul-07 5:32

Leslie Sanford

11-Jul-07 5:32

PhilDanger wrote:
Console.WriteLine("Please enter \"1\" instead");

Re: c#

Colin Angus Mackay11-Jul-07 5:41

Colin Angus Mackay

11-Jul-07 5:41

Beautiful!

Re: c#

Sathesh Sakthivel11-Jul-07 18:28

Sathesh Sakthivel

11-Jul-07 18:28

Marvellous.

Regards,

Satips. Rose | [Rose]

Don't walk in front of me, I may not follow;
Don't walk behind me, I may not lead;
Walk beside me, and just be my friend. - Albert Camus

Re: c#

Leslie Sanford11-Jul-07 5:31

Leslie Sanford

11-Jul-07 5:31

sinji_solanki wrote:
enter a number

sinji_solanki wrote:
and display next 5 prime numbers.

3, 5, 7, 11, 13

Ok. Now what?

Re: c#

Luc Pattyn11-Jul-07 5:58

Luc Pattyn

11-Jul-07 5:58

You have conquered this level.

You now move to the next level:
Enter a 10-digit integer number consisting of odd digits only, and write a program
to print the next 5 primes.

Smile | :)

Luc Pattyn

try { [Search CP Articles] [Search CP Forums] [Forum Guidelines] [My Articles] }
catch { [Google] }

Re: c#

Sathesh Sakthivel11-Jul-07 18:30

Sathesh Sakthivel

11-Jul-07 18:30

Regards,

Satips. Rose | [Rose]

Don't walk in front of me, I may not follow;
Don't walk behind me, I may not lead;
Walk beside me, and just be my friend. - Albert Camus

Re: c#

Paul Conrad11-Jul-07 7:12

Paul Conrad

11-Jul-07 7:12

Shame on you.... Go do you own homework, if you have a specific problem with your homework, such as why something isn't working as you expect, then ask a question. But don't expect people to do your work for you. It won't get you far in the industry.

"Real programmers just throw a bunch of 1s and 0s at the computer to see what sticks" - Pete O'Hanlon

override issue

Brendan Vogt11-Jul-07 4:50

Brendan Vogt

11-Jul-07 4:50

Hi,

I am creating a custom membership provider, one of the properties I had to override as follows:

public override bool EnablePasswordReset
{
get { return m_EnablePasswordReset; }
}

In my Initialize method I have to go and set m_EnablePasswordReset. I don't like setting private variables without using a property. Why can't I add a setter in this property like:

public override bool EnablePasswordReset
{
get { return m_EnablePasswordReset; }
set { m_EnablePasswordReset = value; }
}

I hope someone can help.

Regards
ma se

Re: override issue

Luc Pattyn11-Jul-07 4:57

Luc Pattyn

11-Jul-07 4:57

you can if there is a virtual property with both a get and a set part in the base class.

that's what the error message should indicate (I guess it is: "no suitable method found
to override")

Smile | :)

Luc Pattyn

try { [Search CP Articles] [Search CP Forums] [Forum Guidelines] [My Articles] }
catch { [Google] }

Re: override issue

CPallini11-Jul-07 5:04

CPallini

11-Jul-07 5:04

Of course it depends on base class property declaration.
BTW

public virtual bool EnablePasswordReset;
{
   get { return m_EnablePasswordReset; }
}

defines a read-only property, maybe the base class author considered a bad thing allowing public write access to the variable.
Big Grin | :-D

If the Lord God Almighty had consulted me before embarking upon the Creation, I would have recommended something simpler.
-- Alfonso the Wise, 13th Century King of Castile.

String parameter is not equal

DyOswald11-Jul-07 4:28

DyOswald

11-Jul-07 4:28

I write a function that passes a string parameter to my ws and return the hash code of that parameter.
But when I compare it to the hash code of the original string in my client-side code, they were not equal.
Could anybody help me please?

WS Code:

[WebMethod]<br />
public int MyWebFunction(string data)<br />
{<br />
   int retVal = data.GetHashCode();<br />
<br />
   ... rest of my code ...<br />
<br />
   return retVal;<br />
}

Client-Side Code:

public bool DataUploader(string data)<br />
{<br />
   bool retVal;<br />
   int hashCode;<br />
   <br />
   MyWebService ws = new MyWebService();<br />
   hashCode = ws.MyWebFunction(data);<br />
<br />
   if (hashCode == data.GetHashCode())<br />
   {<br />
      retVal = true;<br />
   }<br />
   else<br />
   {<br />
      retVal = false;<br />
   }<br />
<br />
   return retVal;<br />
}

Why does it always returns false?

I'll make sure they remember my name a hundred years from now!

Re: String parameter is not equal

Luc Pattyn11-Jul-07 5:01

Luc Pattyn

11-Jul-07 5:01

There are two possibilities:

- the strings are NOT equal.
- the hashing is different; please read the remarks on MSDN about String.GetHashCode()

Smile | :)

Luc Pattyn

try { [Search CP Articles] [Search CP Forums] [Forum Guidelines] [My Articles] }
catch { [Google] }

Re: String parameter is not equal

DyOswald12-Jul-07 5:15

DyOswald

12-Jul-07 5:15

Apparently the string is the cause of my problem.
Using the same web method, I run these codes which return two different results.

Returns true:

public void DoUpload()<br />
{<br />
   string data = "This is my string to upload.";<br />
<br />
   UploadData(data);<br />
}

Returns false:

public void DoUpload(string cmd, string conn)<br />
{<br />
   DataSet ds = new DataSet();<br />
   OleDbDataAdapter oAdapter = new OleDbDataAdapter(cmd, conn);<br />
<br />
   oAdapter.Fill(ds);<br />
<br />
   string data = ds.GetXml();<br />
<br />
   UploadData(data);<br />
}

How could that happen? What's the difference between those two string?
I couldn't find any reason why the first code returns true while the other returns false...

I'll make sure they remember my name a hundred years from now!

Re: String parameter is not equal

Luc Pattyn12-Jul-07 5:29

Luc Pattyn

12-Jul-07 5:29

Hi,

GetXml() returns a structured text with < and > signs and everything,
it will not return "This is my string to upload."

I am not familiar with databases nor XML, but I think we established your
two strings ARE different. You should have looked at the strings themselves
in the first place !

Smile | :)

Luc Pattyn

try { [Search CP Articles] [Search CP Forums] [Forum Guidelines] [My Articles] }
catch { [Google] }

Re: String parameter is not equal

DyOswald13-Jul-07 3:36

DyOswald

13-Jul-07 3:36

Thanks for the reply, Luc Pattyn.

Yes those strings are indeed different, and I'm aware of that.
But the real problem is when I use those strings as a parameter value in UploadData(string data).
My function works just fine if I use variabel like string data = "Blablabla" or string data = TextBox1.Text or string data = "Bla\nbla\nbla.", they're all return true.
But if I use string data = ds.GetXml(), my function returns false.
Is the string generated with GetXml() has differences from the usual string?
Correct me if I was wrong, but aren't they both string type?
Please help me on this...

WS Code:

[WebMethod]<br />
public int MyWebFunction(string data)<br />
{<br />
   int retVal = data.GetHashCode();<br />
<br />
   ... rest of my code ...<br />
<br />
   return retVal;<br />
}

Client-Side Code:

public bool DataUploader(string data)<br />
{<br />
   bool retVal;<br />
   int hashCode;<br />
<br />
   MyWebService ws = new MyWebService();<br />
   hashCode = ws.MyWebFunction(data);<br />
<br />
   if (hashCode == data.GetHashCode())<br />
   {<br />
      retVal = true;<br />
   }<br />
   else<br />
   {<br />
      retVal = false;<br />
   }<br />
<br />
   return retVal;<br />
}

I would be very grateful if you could email me the solution (orkaholic@gmail.com).
Again, thanks for your reply Luc.

I'll make sure they remember my name a hundred years from now!

Distribution license for Interop.ShockWaveFlashObjects.DLL

Tapas Das11-Jul-07 3:29

Tapas Das

11-Jul-07 3:29

I am writing a C# application from which I want to play some Shockwave Flash Video (.swf). Now I can use Interop.ShockwaveFlashObjects.dll & AxInterop.ShockwaveFlashObjects.dll to play the video.

Anybody knows what kind of license I need to ditribute these DLLs with my exe?

Thanks

-Tapas

Re: Distribution license for Interop.ShockWaveFlashObjects.DLL

Pete O'Hanlon11-Jul-07 3:35

Pete O'Hanlon

11-Jul-07 3:35

As these are just the .NET wrappers around the Flash object, I would assume that the only requirement would be that Flash was installed on the client.

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Refresh DataGrid with Latest Values

ramdil11-Jul-07 3:02

ramdil

11-Jul-07 3:02

Hi all
I am populating a datagrid with details directly from the database.
now i some new insertion is done in database, the grid should be refreshed..so i am again calling load method to repopulate the grid.Can i refresh the grid with only latest changes that means i dont want to reload the entire data instead i need to load recent data and should be appended to the grid .Is it possible if possible how can i do it

Thanks in advance

Regards
DilipRam

Re: Refresh DataGrid with Latest Values

Drew McGhie11-Jul-07 4:08

Drew McGhie

11-Jul-07 4:08

You probably want to take a look at the BindingSource[^] class. It should handle what you're looking for.

Re: Refresh DataGrid with Latest Values

ramdil11-Jul-07 5:25

ramdil

11-Jul-07 5:25

Thanks for the reply,but since i am loading the data into a datatable and using the datatable count i am adding new row to the grid..so how can i used biniding concept here.can any one help me here

Regards
DilipRam

Re: Refresh DataGrid with Latest Values

Drew McGhie11-Jul-07 7:27

Drew McGhie

11-Jul-07 7:27

The bindingsource does all that for you. When you update the underlying dataset, it updates anything the bindingsource is linked to.

AutoCompleteStringCollection + Specified cast is not valid

Nouman Bhatti11-Jul-07 3:00

Nouman Bhatti

11-Jul-07 3:00

i m trying to add string's in this collection by calling the Add method of this collection type, but every time i tried to add string in collection of type AutoCompleteStringCollection it gives and invalid cast exception

Re: AutoCompleteStringCollection + Specified cast is not valid

Scott Dorman11-Jul-07 3:29

Scott Dorman

11-Jul-07 3:29

You need to make sure that the AutoCompleteSource property is set to AutoCompleteSource.CustomSource. You should be doing something like this:

AutoCompleteStringCollection a = new AutoCompleteStringCollection();
a.Add("test");
a.Add("test 2");
this.textBox1.AutoCompleteCustomSource = a;
this.textBox1.AutoCompleteSource = AutoCompleteSource.CustomSource;

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