Re: cheked list box control - C# Discussion Boards

3-Jul-08 22:48

It's clearly a homework question.

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cheked list box control

Hum Dum3-Jul-08 1:52

Hum Dum

3-Jul-08 1:52

there is a table in database, having feild StationName & pk as stationID.

Now i am adding the StationName in chekedlistBox control and also using stationID in Tag property for each item i add.

after this what i want to do if a user check 1 or more item from list, then all those items deleted/updated(whatever function i want to perform) ona button click.

I am doing this as:

a) On form load event populating the CheckedListBox control.
b) On Button click event performing my action.

IEnumerator myEnum = chkList.CheckedIndices.GetEnumerator();
string SQL;

while(myEnum.MoveNext() != false)
{
  SQL = "Update A Set [xyz] = 1 where [stationID] =" chkList.Tag.Tostring();//sample query 
  ExecuteSQL(SQL);// method i m calling to update
}

the tag property is not giving the corresponding stationID for stationName.

What is wrong?

Also how to use foreach loop for chekedListBox items?

leppie3-Jul-08 2:07

3-Jul-08 2:07

humdumof wrote:
What is wrong?

humdumof wrote:
SQL = "Update A Set [xyz] = 1 where [stationID] =" chkList.Tag.Tostring();//sample query

You need a + to concatenate strings.

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Hum Dum3-Jul-08 2:13

Hum Dum

3-Jul-08 2:13

leppie wrote:
You need a + to concatenate strings.

i miss type here?
that i know........??

problem is TAG property not giving the corresponding StationID for StationName which user selected

leppie3-Jul-08 2:20

3-Jul-08 2:20

Yes, that will happen, because you are referring to the same checklist object all the time.

You need to cast the current enumerated object to what you put in there, and then get the value.

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Hum Dum3-Jul-08 2:38

Hum Dum

3-Jul-08 2:38

leppie wrote:
You need to cast the current enumerated object to what you put in there, and then get the value.

how to do that?

(datatype)myEnum.Current ??

but how to get the item name(text)...???

leppie3-Jul-08 3:57

How to protect my c# code from decompiling

3-Jul-08 3:57

That depends on the data type you passed into it.

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Member 17396853-Jul-08 1:42

3-Jul-08 1:42

I am willing a create C# windows application and wanted to distribute it through internet.But I came to know the the .net assemblies can be decompiled.There are so many Obfuscaters avilable but i don't have money to buy that. Can anybody suggest anything other than Obfuscaters.

N a v a n e e t h3-Jul-08 1:48

N a v a n e e t h

3-Jul-08 1:48

I believe VS 2008 comes with a obfuscater community edition which will be free.

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Member 17396853-Jul-08 1:56

3-Jul-08 1:56

can i use it for 2.0 applications and does Obfuscaters protect my code 100 %.

leppie3-Jul-08 2:08

3-Jul-08 2:08

Member 1739685 wrote:
does Obfuscaters protect my code 100 %.

No. But by asking this question, you likely will not need one. If you have some serious IP to hide, write it in C/C++.

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Member 17396853-Jul-08 3:06

3-Jul-08 3:06

No . I don't want anybody to see my code.It is not a case of IP or something like that

Gareth H3-Jul-08 3:35

Gareth H

3-Jul-08 3:35

If its something ground breaking, get a patent. You wont be able to stop someone 100% from reading your code.

Why are you worried about people seeing your code anyways?

Regards,
Gareth.

(FKA gareth111)

ajtunbridge3-Jul-08 4:03

ajtunbridge

3-Jul-08 4:03

No commenting Wink | ;)

Member 17396856-Jul-08 23:49

6-Jul-08 23:49

Don't say some bullshit if you don't know the answer.
Every company is concerned about their source code.
I am creating a product by after a lot of hardwork.
Someone simply decompiling my code a creating a new version of it.
what is the meaning in that.

Gareth H7-Jul-08 1:43

Gareth H

7-Jul-08 1:43

And that's why company's get patents.

Regards,
Gareth.

(FKA gareth111)

Thomas Stockwell3-Jul-08 10:14

Thomas Stockwell

3-Jul-08 10:14

You do know that IP stands for Intellectual Property, don you? That would be the only thing that you would really want to protect in the first place.

Regards,
Thomas Stockwell

Programming today is a race between software engineers striving to build bigger and better idiot-proof programs, and the Universe trying to produce bigger and better idiots. So far, the Universe is winning.

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Re: Using a C++ LIB in C#

Thomas Stockwell3-Jul-08 10:12

Thomas Stockwell

3-Jul-08 10:12

If you happen to be knowledgable in a programming aspect you can always write an outstanding article and if you are chosen in the CodeProject monthly competition for best article you can get one for free (depending on language and month).

generic collection

arkiboys3-Jul-08 1:36

arkiboys

3-Jul-08 1:36

Hi,
The code below gives this error:

Cannot implicitly convert type 'System.Collections.Generic.List<DataAccess.clsSetting>' to 'DataAccess.clsSetting'

Any thoughts please?

DataAccess.clsSetting s = DataAccess.clsSettingDB.GetSetting(strSelectedItem);

'in case you would like to know what GetSetting does:

public static List<DataAccess.clsSetting> GetSetting(string strSelectedItem)
{

//some code here...
return genericlist
}

Re: generic collection

N a v a n e e t h3-Jul-08 1:47

N a v a n e e t h

3-Jul-08 1:47

DataAccess.clsSettingDB.GetSetting returns a List<DataAccess.clsSetting> and you are trying to assign to a DataAccess.clsSetting object. That is the error.

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Using a C++ LIB in C#

indogerman3-Jul-08 1:21

indogerman

3-Jul-08 1:21

Hi Guys,

A vendor of ours has given me the source code for one of his applications. This is a MFC based form (in VC++) which uses the vendor's own .lib file for its actual functionality (i.e. actual communication with device).

Now I need to make a similar application but in C#. For this I need to take the LIB file as provided with the source code, and use it in my C# application.
But I cannot find anyway to do this. C# only binds DLLs, right?

I tried to wrap the LIB in a DLL (MFC shared), but since i really dont know how the lib is made, and moreover, the lib gives out some enum datatypes from its functions (as paramter & return types), i am not able to successfully create this DLL.

Does anyone know any other way for using a C++ LIB in a C# App??

Thanks a lot guys!

leppie3-Jul-08 2:11