C# Discussion Boards - CodeProject

Re: DAAB Question

Stefan Troschuetz19-Jul-06 22:12

Stefan Troschuetz

19-Jul-06 22:12

If the Database type provides a Close or Dispose method or something similar you should definitely call it.

"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." - Rick Cook

www.troschuetz.de

How to make Windows service interactive in .net 2.0 Please help ???

Waqas Nasir19-Jul-06 21:32

Waqas Nasir

19-Jul-06 21:32

hi,

Just wanted to ask how to make the windows service interactive in .net 2.0, can any body help... I have changed the registry value to type to 272(dec) in LocalMachine\SYSTEM\CurrentControlSet\Services\SERVICENAME registry key... but still its not working... can any body help please...

Thanks,
Regards,
Waqas

Re: How to make Windows service interactive in .net 2.0 Please help ??? [modified]

Mike Dimmick20-Jul-06 0:04

Mike Dimmick

20-Jul-06 0:04

Microsoft now advise against interactive services. They can be susceptible to 'shatter' attacks, where a non-privileged process can cause the service to execute some privileged action by sending it window messages. By definition an interactive service has to run as the SYSTEM account which is very highly privileged - you should endeavour to configure your service to run with the lowest privileges possible.

In Windows Vista and "Longhorn" Server, an interactive user session will be session 1, while the interactive services will run in session 0 as they do now. As a result, the user will not see any UI that the interactive service displays - 'interactive' services will only be able to interact with each other. I have an interactive service written in VB6 which suffers from exactly this problem.

If you need UI, you'll need to come up with a way for a separate UI process to communicate with your service.

Stability. What an interesting concept. -- Chris Maunder

-- modified at 6:05 Thursday 20th July, 2006

control label

aqui_i19-Jul-06 21:30

aqui_i

19-Jul-06 21:30

how can i use this.controls in c#. i need to control the label
for example..
for(int i=1; i<4; i++)
{
label(i).text = "";
}

how can i control the labels in this situation... i don't know how to use this.controls in this situation or are there other ways.

Re: control label

Christian Graus19-Jul-06 21:37

Christian Graus

19-Jul-06 21:37

foreach(Control c in Controls)
{
Label l = c as Label;

if (l != null) l.Text = "";
}

Remember, C# is case sensitive.

Christian Graus - Microsoft MVP - C++
Metal Musings - Rex and my new metal blog

Re: control label

Martin#19-Jul-06 22:38

Martin#

19-Jul-06 22:38

Would you also use this?

foreach(Control c in this.Controls)
{
if(c is Label)
c as Label.Text = "";
}

All the best,

Martin

Re: control label

Mike Dimmick20-Jul-06 0:07

Mike Dimmick

20-Jul-06 0:07

Using 'is' followed by 'as' causes two runtime type lookups to occur, one to do the boolean test, the other to actually perform the cast. Using 'as' alone followed by a test for null performs better.

Stability. What an interesting concept. -- Chris Maunder

Re: control label

Christian Graus20-Jul-06 0:50

Christian Graus

20-Jul-06 0:50

Martin# wrote:
c as Label.Text = "";

Apart from being a mess because it requires two lookups ( as someone else said ), I don't think this will work as you've typed it.

Christian Graus - Microsoft MVP - C++
Metal Musings - Rex and my new metal blog

Re: control label [modified]

Martin#20-Jul-06 1:14

Martin#

20-Jul-06 1:14

Sure,

foreach(Control c in this.Controls)
{
if(c is System.Windows.Forms.Label)
{
System.Windows.Forms.Label l = c as System.Windows.Forms.Label;
l.Text ="";
}
}

-- modified at 7:15 Thursday 20th July, 2006

Re: control label

J4amieC20-Jul-06 1:25

J4amieC

20-Jul-06 1:25

which should be written as

foreach(Control c in this.Controls)
{
  Label label = c as LAbel
  if(label != null)
  {
     label.Text ="";
  }
}

---

How to get answers to your questions[^]

Re: control label

Martin#20-Jul-06 1:42

Martin#

20-Jul-06 1:42

Of course,

I really understud what everybody else explaint me before.

but thanks for youre interest,

All the best,

Martin

Re: control label

Martin#20-Jul-06 1:05

Martin#

20-Jul-06 1:05

Thanks for your statements,

All the best,

Martin

Re: control label [modified]

Martin#20-Jul-06 1:08

Martin#

20-Jul-06 1:08

Is there no way, that

c as Label

causes an exception?

Thanks for youre time.

Martin

-- modified at 7:42 Thursday 20th July, 2006

Re: control label

Christian Graus20-Jul-06 9:20

Christian Graus

20-Jul-06 9:20

No, c as Label will return null if c is not a Label.

Christian Graus - Microsoft MVP - C++
Metal Musings - Rex and my new metal blog

Re: control label

Martin#20-Jul-06 20:17

Martin#

20-Jul-06 20:17

Thank you, Smile | :)

I will go threw my code for cleaning up a little, I think.

All the best,

Martin

monitoring running process

Gulfaraz19-Jul-06 21:29

Gulfaraz

19-Jul-06 21:29

hello !

how to know that

what application/program is consuming what/how much resources of the system.

if some source code is there, plz send it

Re: monitoring running process

RizwanSharp19-Jul-06 21:58

RizwanSharp

19-Jul-06 21:58

Please check this in MSDN System.Diagnostics.Process!
Process class in System.Diadnostics namespace includes all the things related to the work you are going to do. I hope you'll find your solution yourself.
Best Regards,
Rizwan Ahmed

Setup Deployment User Interface Problem

ekynox19-Jul-06 21:18

ekynox

19-Jul-06 21:18

G'day guys,

Today I have been playing with the option of having to insert additional user interface dialogs in the setup msi project in visual studio. One my goals in this setup msi project is to allow the user to select the option of whether they want to read the user guide or install the software. I have implemented this option as a two radiobutton form under the User Interface Option.

The problem I am experiencing is that, when the user selects the option of simply viewing the user guide, the setup msi starts to install the software once the software is half through the installation it then fires up the user guide then continues to complete the installation.

What do I need to do in order to prevent the setup msi from installing the software when the user selects the option of viewing the user guide document.

I have used the following article as a reference to get me started in customizing the user interface dialog:
http://www.codeproject.com/dotnet/Easy_Custom_Setup.asp

Any pointers will be most appreciated.

thanks

How can i get the current record..... [modified]

mostafa_h19-Jul-06 20:16

mostafa_h

19-Jul-06 20:16

hi ,
I used a listbox for going to the next or previous record .For the savebutton event , I wrote this :

private void btnSave_Click(object sender, EventArgs e)<br />
 {<br />
   ...<br />
   PopulateListBox1();<br />
 }

and For the PopulateListBox1() Function :

private void PopulateListBox1()<br />
{<br />
...<br />
if (ListBox1.Items.Count > 0)<br />
  {<br />
      ListBox1.SetSelected(ListBox1.Items.Count - 1, true);<br />
  }<br />
...<br />
}<br />

thus , the last record is selected .If I want to select the current record when I press the savebutton , How can I do it ?
thanx

s_mostafa_h

-- modified at 2:17 Thursday 20th July, 2006

Re: How can i get the current record.....

_AK_19-Jul-06 20:29

_AK_

19-Jul-06 20:29

You can find the value or text in the list first and then made that selected.

Best Regards,
Apurva Kaushal

Re: How can i get the current record.....

mostafa_h19-Jul-06 20:48

mostafa_h

19-Jul-06 20:48

can u more explain ?
thanx a lot ,

s_mostafa_h

Re: How can i get the current record.....

_AK_19-Jul-06 21:09

_AK_

19-Jul-06 21:09

Sorry for the confusion, actually i got confused with dropdwon list control.
Cant you do something like this.

string str = "sometext";<br />
			for(int i=0;i<=listBox1.Items.Count; i++)<br />
			{<br />
				if(listBox1.Items[i].Equals(str))<br />
				{<br />
					listBox1.SetSelected(i,true);<br />
				}<br />
<br />
			}

Best Regards,
Apurva Kaushal

Re: How can i get the current record.....

mostafa_h19-Jul-06 23:37

mostafa_h

19-Jul-06 23:37

apurva kaushal wrote:
Cant you do something like this.
string str = "sometext";

"sometext" must be "ListBox1.Value" , but i recieve a "assigned local variable " Error .
REGARDS ,

s_mostafa_h

Re: How can i get the current record.....

_AK_19-Jul-06 23:45

_AK_

19-Jul-06 23:45

No sometext is the text what you need to be set as selected in the listbox.

Best Regards,
Apurva Kaushal

Re: How can i get the current record.....

mostafa_h20-Jul-06 1:43

mostafa_h

20-Jul-06 1:43

the Items'ListBox1 (e.g. field [name of company])are the same that with the selection of them , I can go to any record of the Table(next or before record ).

apurva kaushal wrote:
sometext is the text what you need to be set as selected in the listbox.

Which Text ?
Regards ,

s_mostafa_h

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