passing Value from one windows form to another - C# Discussion Boards

date validity

fmardani14-Dec-05 22:38

fmardani

14-Dec-05 22:38

In a textbox a date is entered.
How can you check if this is a valid date or infact a date at all?
Thanks

Re: date validity

tatchung14-Dec-05 23:12

tatchung

14-Dec-05 23:12

i believe u can do this with regex though im cluless what its coresponding regex term is. try to google it Blush | :O

Aim small, miss small...

Re: date validity

Polis Pilavas15-Dec-05 2:17

Polis Pilavas

15-Dec-05 2:17

You can do that quite easily by writing your code inside a try/catch block like below:

try
{
	DateTime <code>tmp</code> = DateTime.Parse(this.textBox1.Text);
}
catch (Exception exc)
{
	MessageBox.Show("This is not a valid date\n\nError Message: " + exc.Message);
	return;
}
MessageBox.Show("Date is valid");

Regards,
Polis

Can you practice what you teach?

How to add a TextBox control into a ToolBar?

Andrew010514-Dec-05 22:22

Andrew0105

14-Dec-05 22:22

Dear all:
How could I add a TextBox control into a ToolBar control in VS.NET 2003? The purpose is to generate a toolbar which is like the AddressBar in IE.

Please give me a hand. Thanks a lot. Blush | :O

Andrew

-- modified at 5:40 Thursday 15th December, 2005

Re: How to add a TextBox control into a ToolBar?

albCode14-Dec-05 22:37

albCode

14-Dec-05 22:37

Right click in WindowsForms then click Add/Remove Items, the window Customize Toolbox appear then find TextBox and check it finally click OK button.

I dont know if this is answer of ur question, cuz i wasnt understand clearly ur question.

Hope this helps u

-- modified at 4:37 Thursday 15th December, 2005

Proxy with authentication retire something ,, help me!!!

icerein14-Dec-05 21:28

icerein

14-Dec-05 21:28

Hi friends,

the follow code will be run normally in WindowsApplication:

string userName = "a";
string userPass = "a";
string address = "192.168.18.145";
int port = 8080;

WebProxy myproxy = new WebProxy(address , port);
NetworkCredential credentials = new NetworkCredential(userName, userPass, null);
myproxy.Credentials = credentials;

WebRequest rqt = WebRequest.Create("http://www.google.com");
rqt.Proxy = myproxy;
rqt.PreAuthenticate = true;

//in SmartDeviceApplication,,the follow sentance cause exception
WebResponse rsp = rqt.GetResponse();

System.IO.Stream stream = rsp.GetResponseStream();
System.IO.StreamReader reader = new System.IO.StreamReader(stream);
this.textBox1.Text = reader.ReadToEnd();

stream.Close();
reader.Close();

but in the SmartDeviceApplication,,it will cause the problem :
The response did not contain an end of entity mark.

Can you tell me why and how to solve the problem??
Thank you !!

getting a bluetooth connection from pc to mda

Radi8614-Dec-05 20:53

Radi86

14-Dec-05 20:53

hello!

my friend and I are searching for an example code for getting an bluetooth connection from pc to pda.
because we are having trouble finding an good explanation is there anybody who can help us?

thanks
daniel D'Oh! | :doh:

passing Value from one windows form to another

A.Grover14-Dec-05 19:39

A.Grover

14-Dec-05 19:39

hello all,

i have two window forms. one is having button and second is having listbox on it.when i click on button i want some string value to be add in listbox which is on another form at run time.

i have tried with following way.

make the listbox control specifier as public
make an object of the listbox control in button page e.g pg.
pg.listbox1.items.add("hello"); on button click

but items are not added into the listbox at runtime .plz help me out how can i solve this problem

Amit Grover
CDAC R&D
Gist Group
pune

Re: passing Value from one windows form to another

Colin Angus Mackay14-Dec-05 20:22

Colin Angus Mackay

14-Dec-05 20:22

There is an article on Passing values between forms[^]
Does that help?

My: Blog | Photos

"Man who stand on hill with mouth open will wait long time for roast duck to drop in." -- Confucious

-- modified at 2:28 Thursday 15th December, 2005

Re: passing Value from one windows form to another

tatchung14-Dec-05 20:29

tatchung

14-Dec-05 20:29

Hi there have you tried SessionState?

Aim small, miss small...

Re: passing Value from one windows form to another

Anbuselvan14-Dec-05 20:32

Anbuselvan

14-Dec-05 20:32

Hi,

If you are using McAfee anti virus scanner, do the following:

1. Right click the McAfee task bar icon and open "VirusScan Console" window.
2. From VirusScan console window righ click the "Buffer Overflow Protection" option and disable it.
3. Run your application again.

Happy Programming!!! Smile | :)

Regards,

P.Anbuselvan
Sr.Software Engineer
Hyderabad

Re: passing Value from one windows form to another

albCode14-Dec-05 20:46

albCode

14-Dec-05 20:46

Follow this link

http://www.csharpfriends.com/Forums/ShowPost.aspx?PostID=32810

Calling C# COM Object from VC++ 6.0

Soaring Eagle14-Dec-05 19:15

Soaring Eagle

14-Dec-05 19:15

Hi there,

Can someone please provide me with the steps or a good resource that explains in detail how can I call a COM C# Server from a VC++ 6.0 Client...

There is an article on codeproject that describes well the C# part but it doesn't get much in the details of calling it from the VC++ client.

Can someone please help out?

Cheers,
Eagle

Re: Calling C# COM Object from VC++ 6.0

A.Grover14-Dec-05 19:53

A.Grover

14-Dec-05 19:53

Try out this link it may be helpful to you

http://www.codecomments.com/archive292-2004-6-217901.html

Amit Grover
CDAC R&D
Gist Group
pune

Re: Calling C# COM Object from VC++ 6.0

Soaring Eagle14-Dec-05 20:39

Soaring Eagle

14-Dec-05 20:39

Thanks a lot Amit,

Shall I write the following command in the command prompt after reaching the project's folder?

csc /target:library /out:ECSLink.dll ECSLink.cs
tlbexp ECSLink.dll /verbose

I set the "register for COM Interoperability" to "true",won't that eliminate the need to write the above commands?

Another thing is that I get an error message when trying to run these commands from the command prompt telling me that they are an unidentified internal or external commands?

Any idea why?Is there something wrong with my installation?

Shall I place both the C# COM Server and C++ Client in the same folder?

Thanks again Amit,
Eagle

Re: Calling C# COM Object from VC++ 6.0

A.Grover14-Dec-05 23:14

A.Grover

14-Dec-05 23:14

definately you can write the commad using .net command prompt which is available at

Programs->Visual Stdio.net 2003->Visual Stdio.Net Tools->Visual Stdio Commad Prompt

running command from from .net command promplt resolve ur problem " Undentified internal or external commands"

i am not sure but i think it would eliminate the need to write the command. if you set " Register for Com Interoperability" to true.

Amit Grover
CDAC R&D
Gist Group
pune

Re: Calling C# COM Object from VC++ 6.0

Soaring Eagle14-Dec-05 23:34

Soaring Eagle

14-Dec-05 23:34

Thanks a million Amit,

But what about the command that is used for building the cpp file.

"cl filename.cpp"

What will I use in this case since it's a VC++ 6.0 file?

All the Best ,
Eagle

RAS

Avishay18714-Dec-05 19:13

Avishay187

14-Dec-05 19:13

Hi,

I am writting application that uses the funcion RasDial ...
from some reason i am allways getting error in the return value
it is always 87...?

the prototype is like this

[DllImport("rasapi32.dll",CharSet=CharSet.Auto)]

public extern static uint RasDial(IntPtr lpRasDialExtentoins,string phoneBook,RasDialParams lpRasDialParams,int dwNotifierType,RasCallBack lpNotifier,RASCONN lpRasConn);

the delegate is defined like this:

public delegate void RasCallBack(uint unMsg,RasConnectionState connectionState,int dwError);

and the usage is like this

RasDialParams dialParams; //Holds the RAS Dial parameters;

RasCallBack notifier;

RASCONN rasConn;

bool pass;

uint retVal;

//Retriving the dial parameters

dialParams = new RasDialParams();

dialParams.dwSize = Marshal.SizeOf(typeof(RasDialParams));

dialParams.szEntryName = m_name;

retVal = RASDialerResources.RasGetEntryDialParams(m_phoneBook, ref dialParams,out pass);

if(retVal != 0 )

{

throw new Exception("Could not get the dial parameters");

}

//Preforming the dial up

dialParams.szUserName = username;

dialParams.szPassword = password;

rasConn = new RASCONN();

rasConn.dwSize = Marshal.SizeOf(typeof(RASCONN));

notifier = new RasCallBack(PPPoEDialer.RasNotifier);

retVal = RASDialerResources.RasDial(IntPtr.Zero,m_phoneBook,dialParams,0,notifier,rasConn);

if(retVal!=0)

{

throw new Exception("Could not Start the ras dial");

}

m_rasHandle = rasConn.hrasconn;

hope that u can help me
Regards
Avishay

To Increase the height of Windows Forms?

MudkiSekhon14-Dec-05 18:51

MudkiSekhon

14-Dec-05 18:51

Hello friends,
I am developing a windows applications in C# using Visual studio.NET. I am generating a report type form using labels and textboxes. I want to show a lot of date on that form. The problem is that while designing the form, I am not able to increase the height of the form farther than its maximum height.
Plz provide me the solution to increase the height of the form during designing of the form.

Thanks,
Sandeep
+919891027854

Re: To Increase the height of Windows Forms?

Soaring Eagle14-Dec-05 19:02

Soaring Eagle

14-Dec-05 19:02

Dear Sandeep,

Try setting the autoscroll attribute of the form properties to "true".

Then adjust the width & height in the size attribute of the from properties to what you like.

Hope this helps.

All the Best,
Eagle

Re: To Increase the height of Windows Forms?

MudkiSekhon14-Dec-05 19:19

MudkiSekhon

14-Dec-05 19:19

Thanks for ur reply. I had already set Autoscroll property to true. But I am still not able to increase sixe of the windows form.

Thanks,
Sandeep
+919891027854

crystal report question

lior654#hotmail.com14-Dec-05 18:29

lior654#hotmail.com

14-Dec-05 18:29

I'm not sure that this is the place for my question
but I really need your help on this one.

Is there any way to pass parameters to Crystal Reports
to be used in a query without calling a stored-procedure?

Dissecting Exception.String

redfish3414-Dec-05 17:53

redfish34

14-Dec-05 17:53

Below is an example Exception.String copied from a MessageBox. How does one extract the exception information individually? The Exception class allows access to some of this information individually such as Exception.Message, but not all. Relevant to my use would be to extrat the information on the last line where it gives location information about the error. Do i have to use Regular Expressions on Exception.String or is there an easier way?

System.ArgumentNullException: Path cannot be null.
Parameter name: path
at System.IO.FileStream..ctor(String path, FileMode mode, FileAccess access, FileShare share, Int32 bufferSize, Boolean useAsync, String msgPath, Boolean bFromProxy)
at System.IO.FileStream..ctor(String path, FileMode mode, FileAccess access, FileShare share)
at System.Xml.XmlTextWriter..ctor(String filename, Encoding encoding)
at App.Settings.Save() in c:\_apps dev\music\sndfileconvert\build_00_01_03_004_csnet\main\settings.cs:line 251

Re: Dissecting Exception.String

Guffa15-Dec-05 1:32

Guffa

15-Dec-05 1:32

redfish34 wrote:
The Exception class allows access to some of this information individually such as Exception.Message, but not all.

Yes, it does. All information in the message box comes from the exception object, where else would it come from?

The location information is in the StackTrace property.

---
b { font-weight: normal; }

Thanks

redfish3420-Dec-05 22:28

redfish34

20-Dec-05 22:28

Thanks for the confirmation. It looks like if i want specific information from the StackTrack, i will have to parse the StackTrace string with RegEx. No biggie, just wanted to make sure i was not overlooking something.

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