Can some bright person solve this ? I am lost with this....so strange - C# Discussion Boards

Re: ArraySorting:

T.RATHA KRISHNAN19-Jul-07 0:23

T.RATHA KRISHNAN

19-Jul-07 0:23

Could u Please tell me any tutorial about how to use Collection Classes?

Re: ArraySorting:

CPallini19-Jul-07 0:22

CPallini

19-Jul-07 0:22

in the declaration, you (implicitely) initialised the array with 50 zeroes, Now, for instance, if the user inputs ten positive numbers, then the Sort method will move the reamaining 40 zeroes into the leading positions of the array, putting the user's entries in the last 10 ones (if you output the whole array then you see the mistake).
Smile | :)

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.

Re: ArraySorting:

Luc Pattyn19-Jul-07 0:27

Luc Pattyn

19-Jul-07 0:27

Hi,

I forgot to mention there is another overload of Sort() that accepts boundary information,
so that can solve your immediate problem; it still leaves you with the 50 limit:

public static void Sort (
Array array,
int index,
int length
)

in your case that would be: Array.Sort(num, 0, num_ele);

For general information on either .NET or C# I would recommend you buy at least one
book and work your way through it. You could also read what MSDN has to say about
ArrayList class for instance.

Smile | :)

Luc Pattyn

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

How do I add a base interface using ModuleBuilder.DefineType()

fpdeguzma7818-Jul-07 23:55

fpdeguzma78

18-Jul-07 23:55

I am using System.Reflection.Emit to create a dynamic assembly. I use ModuleBuilder.DefineType() to add a class type. I want to add a base interface e.g. "ICalculator" to my class definition but unfortunately i cannot figure out how to do this dynamically. The class constructor doesn't have any parameters. The "Interfaces" namespace has the "ICalculator" interface.

The class generated should be like this:

using Interfaces;

namespace ConcreteLibrary
{
public class ConcreteCalculator : ICalculator
{
public ConcreteCalculator()
{
}

#region ICalculator Members

public object Calculate()
{
// do nothing;
return null;
}

#endregion

}
}

How do I include the "Interfaces" namespace and the "ICalculator" interface to the "ConcreteCalculator" class? Your help would be very much appreciated.

Thank you in advance! Smile | :)

Re: How do I add a base interface using ModuleBuilder.DefineType()

Thaer Hamael19-Jul-07 0:02

Thaer Hamael

19-Jul-07 0:02

Thaer

Re: How do I add a base interface using ModuleBuilder.DefineType()

fpdeguzma7819-Jul-07 21:40

fpdeguzma78

19-Jul-07 21:40

please disregard this inquiry. the problem is solved Smile | :)

How To Add Grid To mobil Application By Spesify Propert

Thaer Hamael18-Jul-07 23:28

Thaer Hamael

18-Jul-07 23:28

hi all
I Wount to add DataGrid To my Mobil Application With this propertis
1- columns type combobox
2- columns type CheckBox
3- Columns type Buttun To delete the row selected by click to this button in grid this button is in evry row

thanks All
Thaer (T.h)

Thaer

Can some bright person solve this ? I am lost with this....so strange

pierrecenti18-Jul-07 23:27

pierrecenti

18-Jul-07 23:27

When running the code below on a win 2003 server i receive all the 4 columns in the csv file, when doing it on xp I only get one column !?!?! how weird is that on a scale !? ...somebody run into this ?

string strImportPath = "C:\\inetpub\\wwwroot\\TempUpload\\";
string strConn = "Driver={Microsoft Text Driver (*.txt; *.csv)};Dbq=" + strImportPath.Trim() + ";Extensions=csv,txt;Persist Security Info=False";
OdbcConnection myConnection = new OdbcConnection(strConn);

myConnection.Open();

OdbcDataAdapter myAdapter = new OdbcDataAdapter("select * FROM Manufacturers.txt", myConnection);
DataSet ds = new DataSet();
try
{
myAdapter.Fill(ds,"fungus");
}
catch(Exception ex)
{
string messages = ex.Message.ToString();
}

dataGrid1.DataSource = ds.DefaultViewManager;
dataGrid1.DataMember="fungus";

myConnection.Close();

peirre

Re: Can some bright person solve this ? I am lost with this....so strange

gumi_r@msn.com19-Jul-07 1:37

gumi_r@msn.com

19-Jul-07 1:37

Haven't worked with MS Text Driver or any csv data but first thing that comes to mind is:

Make sure Regional settings are compatible with your .txt files. Maybe your list separator is not the same in both OS.

Index error...

Support12318-Jul-07 23:17

Support123

18-Jul-07 23:17

hi...

I am using the following code:

OurApp.LIB.TestData TestD = new OurApp.LIB.TestData();<br />
            TestD.LoadData(2,Convert.ToString(lvTestA.SelectedItems[0].SubItems[0].Text.Trim()));

now this is all in the:

private void lvTestA_SelectedIndexChanged(object sender, EventArgs e)<br />
        {<br />

If you click on a item in the listview (the first time) it works fine.
Once you click on another item in the listview it comes up with the error...

"InvalidArgument = Value of '0' is not valid for 'index'. Parameter name: index"

why could this be?

"Many of life's failures are people who did not realize how close they were to success when they gave up." Thomas A. Edison

Re: Index error...

Support12318-Jul-07 23:24

Support123

18-Jul-07 23:24

never mind.... i just put in a if(lvTestA.selecteditems.count > 0)
{

and now it works fine...

It seems that the item isnt really selected as soon as you click it... (it is cleared and then selected ???)

Thank you anyway Smile | :)

"Many of life's failures are people who did not realize how close they were to success when they gave up." Thomas A. Edison

Re: Index error...

Luc Pattyn18-Jul-07 23:30

Luc Pattyn

18-Jul-07 23:30

Hi,

I guess there are two changed events, one when the original selection gets unselected,
the second one when the newly clicked item gets selected.

BTW do all items have subitems ?

Smile | :)

Luc Pattyn

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

Re: Index error...

Support12318-Jul-07 23:40

Support123

18-Jul-07 23:40

yes all items have subitems Smile | :)

Thanks...

i thought that there are two events taking place in the SelectedIndexChange event just after i posted the message...

Thank you for your time Smile | :)

"Many of life's failures are people who did not realize how close they were to success when they gave up." Thomas A. Edison

Re: Index error...

Colin Angus Mackay18-Jul-07 23:30

Colin Angus Mackay

18-Jul-07 23:30

Support123 wrote:
Convert.ToString(lvTestA.SelectedItems[0].SubItems[0].Text.Trim())

See all that - I'd separate that out into lots of lines as it makes it much easier to debug. This is the only code that appears to use indexes so I'm guessing it is here that the problem lies.

selectedItems = lvTestA.SelectedItems;
firstItem = selectedItems[0];
subItems = firstItem.SubItems;
firstSubItem = subItems[0];
string theText = firstSubItem.Text;
string theTrimmedText = theText.Trim();
string convertedText = Convert.ToString(theTrimmedText);
TestD.LoadData(2,convertedText);

NOTE: I've left out the class names for most of the above - you'll have to fill that in.

The above code can now be much more easily debugged and stepped through. You can then see exactly which line has the problem - And you can watch the values so you can see exactly what it is doing.

This should help you narrow down your problem.

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Re: Index error...

Thaer Hamael19-Jul-07 0:04

Thaer Hamael

19-Jul-07 0:04

Hi,

I guess there are two changed events, one when the original selection gets unselected,
the second one when the newly clicked item gets selected.
Rose | [Rose]

Thaer

Re: Index error...

Martin#19-Jul-07 0:11

Martin#

19-Jul-07 0:11

Please, tell me that Luc and you are twins and you allways think the same.
Otherwise it would look like you copied Luc's suggestion![^]

Hmm, just compared you two Birthday dates and I have to say it's a big gap in between.
Sorry Luc, don't want to say that you are soo old! Wink | ;)

All the best,

Martin

Re: Index error...

Luc Pattyn19-Jul-07 0:37

Luc Pattyn

19-Jul-07 0:37

Then why did you ? D'Oh! | :doh:

Luc Pattyn

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

Re: Index error...

Martin#19-Jul-07 0:55

Martin#

19-Jul-07 0:55

Hmmmm,

I just wanted to show the community how well experienced you are! Smile | :)

All the best,

Martin

how to copy database ?

help as an alias18-Jul-07 22:55

help as an alias

18-Jul-07 22:55

I m trying to make an application which is connected with more than one database and its depend on user that user may have any name so I create a database name is blank in bin --> debug folder when user make a new colony database. It copy from the existing database which have already same tables query etc.
plz give me coding.
plz help me and thakx in advance

Nikesh Yadav,
CSS infotech,
Gurgaon,
Haryana(India).

Re: how to copy database ?

Colin Angus Mackay18-Jul-07 23:21

Colin Angus Mackay

18-Jul-07 23:21

Er nikesh yadav wrote:
plz give me coding

The code will be highly dependent on the database that you use.

If it is Access then a simple file copy might suffice

If it is SQL Server the two choices I'd look at would be to restore a blank database to the location that you want, or to have a set of scripts to create a brand new database

Other database system may offer similar choices, they may offer something completely different.

Re: how to copy database ?

help as an alias18-Jul-07 23:35

help as an alias

18-Jul-07 23:35

i m using Access

Re: how to copy database ?

Colin Angus Mackay18-Jul-07 23:49

Colin Angus Mackay

18-Jul-07 23:49

Then you probably just want to copy the file. See the FileInfo class.

See: MSDN - FileInfo[^]

Threading concept..

Ron.S18-Jul-07 22:40

Ron.S

18-Jul-07 22:40

Hello All,

I am trying to bind the listbox to a column of the datatable. If i try directly on the click of the button then it will display the data. but, if i am trying to do this by creating a thread for this process it is doing nothing, no error is shown. Please help me.

Thanks in advance.

Bharath.S Ron

Re: Threading concept..

Eduard Keilholz18-Jul-07 22:47

Eduard Keilholz

18-Jul-07 22:47

I think an exception IS thrown however you catch it on some place. You cannot change GUI related things on a diffrent thread.

Try creating a delegate and call the delegate from your diffrent thread using Invoke()

for example :

<br />
private delegate void doBindListbox();<br />
private void BindListbox()<br />
{<br />
// Code to bind listbox<br />
}<br />

and call the delegate from your diffrent thread like so :

<br />
this.Invoke(new doBindListbox(BindListbox));<br />

.: I love it when a plan comes together :.
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Re: Threading concept..

Ron.S18-Jul-07 22:58

Ron.S

18-Jul-07 22:58

Hi,

Is this the correct way?
trd = new Thread(new ThreadStart(this.Invoke(new delegateloaddata(loaddata))));

delegateloaddata = delegate.
loaddata = is the method which has to be called through thread

Bharath.S Ron

Use Ctrl+Left/Right to switch messages, Ctrl+Up/Down to switch threads, Ctrl+Shift+Left/Right to switch pages.