Casting objects to get at the contents? - C# Discussion Boards

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Re: PropertyGrid usage

rbuchana17-Dec-09 7:09

rbuchana

17-Dec-09 7:09

Yeah tried that. Didn't seem to do what I want.

Automate Web Browser control in Multiple Threads

Sumit_Ghosh17-Dec-09 4:56

Sumit_Ghosh

17-Dec-09 4:56

I want to know if its possible to automate the System.Windows.Forms.WebBrowser and make it running in multiple threads.

I mean I want to login to say mysite.com , using 5 different accounts, Is it possible to do that simultaneously with 5 web browsers in 5 threads maintaining seperate sessions with the server of mysite.com,

Wont the sessions overlap with each other?

Re: Automate Web Browser control in Multiple Threads

Dave Kreskowiak17-Dec-09 10:59

Dave Kreskowiak

17-Dec-09 10:59

No, it's not. The WebBrowser will only work on the UI thread.

You don't need 5 seperate threads for this. Just 5 seperate WebBrowser controls.

indianbill007 wrote:
Wont the sessions overlap with each other?

No.

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Dave Kreskowiak
Microsoft MVP
Visual Developer - Visual Basic
2006, 2007, 2008
But no longer in 2009...

magnify support

pvn g17-Dec-09 4:08

pvn g

17-Dec-09 4:08

Hi,

I am executing my windows application in Windows 7.
When i change the size of text to 125% or more, Window screen dosnt display properly.

Re: magnify support

Dr.Walt Fair, PE17-Dec-09 5:48

Dr.Walt Fair, PE

17-Dec-09 5:48

I'd get a monitor that's 125% bigger.

CQ de W5ALT

Walt Fair, Jr., P. E.
Comport Computing
Specializing in Technical Engineering Software

Re: magnify support

pvn g17-Dec-09 18:35

pvn g

17-Dec-09 18:35

ohhh thanks for the reply

pavan

Re: magnify support

pvn g17-Dec-09 18:35

pvn g

17-Dec-09 18:35

ohhhhhh....

Casting objects to get at the contents?

MattFunke17-Dec-09 3:33

MattFunke

17-Dec-09 3:33

Please forgive me if this is a simple question -- I'm pretty new to C#.

Here's a quick code snippet that tries to take advantage of the ClearQuest API:

ClearQuestOleServer.SessionClass cqSession = new ClearQuestOleServer.SessionClass();
cqSession.UserLogon(login, password, dbName, (int)ClearQuestConstants.SessionType.AD_PRIVATE_SESSION, "");
object cqEntities = cqSession.GetEntityDefNames();

Now, when I run through this in the debugger and watch cqEntities, I can see that it's an array of strings (the "Type" field even claims that it's an "object {object[]}" type, with each item within it an "object {string}" type), but C# won't let me cast cqEntities as a string[], nor will it let me use cqEntities in a foreach (since it's not enumerable). What can I do to get at the stringy contents?

Thanks for any help you can offer!

Re: Casting objects to get at the contents?

Migounette17-Dec-09 4:11

Migounette

17-Dec-09 4:11

I am not clear on your problems and I don't know the API:

object cqEntities = cqSession.GetEntityDefNames();

change to

String[] cqEntities = cqSession.GetEntityDefNames() as String[];

foreach (String str in cqEntities)
{
Console.Out.WriteLine(str);
}

Just let me know if it works

Re: Casting objects to get at the contents?

MattFunke17-Dec-09 4:22

MattFunke

17-Dec-09 4:22

No, sadly, it doesn't; it merely sets up cqEntities as an array of nulls. Thanks, though!

Re: Casting objects to get at the contents?

OriginalGriff17-Dec-09 4:15

OriginalGriff

17-Dec-09 4:15

Just a guess, but if you cast it (preferably with "as" and a null check) as an object[] first, you can then cast each element as a string in a foreach.

All those who believe in psycho kinesis, raise my hand.

Re: Casting objects to get at the contents? [modified]

MattFunke17-Dec-09 4:23

MattFunke

17-Dec-09 4:23

I'm having some luck with this one. Thanks! I should have thought of casting the function call as an array of objects myself!

modified on Thursday, December 17, 2009 10:29 AM

Re: Casting objects to get at the contents?

Jim Crafton17-Dec-09 5:34

Jim Crafton

17-Dec-09 5:34

If you hover over the "GetEntityDefNames()" method in your VS editor, you should get a little popup that describes the type that the method returns. Match cqEntities with that type. Alternately the ClearQuest API docs should give you the proper return type. Even the VS class browser should be able to tell you what the type is. You'll want to avoid casting if you can, unless that's being forced on you by the ClearQuest API, in which case that's a heads up that it's not a very good API.

¡El diablo está en mis pantalones! ¡Mire, mire!
SELECT * FROM User WHERE Clue > 0
0 rows returned
Save an Orange - Use the VCF!
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problem receiving data from

Shivendra Pandey17-Dec-09 2:14

Shivendra Pandey

17-Dec-09 2:14

i got assignment to write a program(Server) for port listner the client program is written in java.
the client will send 69 byte that will be received by server and then processed.
i have written a simple TCP listner progam in c# but it always read upto 52 bytes and next 17 bytes are always 0

Re: problem receiving data from

OriginalGriff17-Dec-09 2:35

OriginalGriff

17-Dec-09 2:35

So, cut out the relevant bits, and post them here (within <pre>...</pre> blocks) - otherwise we can't tell what your problem might be...

All those who believe in psycho kinesis, raise my hand.

Re: problem receiving data from

Migounette17-Dec-09 3:59

Migounette

17-Dec-09 3:59

Do you have TCP no delay set ?

SetSocketOption(SocketOptionLevel.Tcp ,SocketOptionName.NoDelay, true);

It should not help in your case except if you made a mistake in your read operation.

TCP is a reliable stream delivery service that guarantees delivery of a data stream sent from one host to another without duplication or losing data but you may see your data cut in several packets. So, handling of re-assembly packets is necessary at the application level.

When the system is not loaded it's okay, but you will see when a system is at 99% of CPU usage it's not the same.

Hope it helps....

Just let me know

Re: problem receiving data from

Jim Crafton17-Dec-09 5:37

Jim Crafton

17-Dec-09 5:37

Is your recv or read function giving you back a total of 69 bytes? If so then the TCP part of the socket read is OK, and the "problem" lies on the server end in terms of what it's sending you. It's entirely possible that the server is in fact sending you 69 bytes, 52 of which are printable characters, and the remaining 17 padded out as 0's. A 0 is a perfectly valid byte value to send across a network.

¡El diablo está en mis pantalones! ¡Mire, mire!
SELECT * FROM User WHERE Clue > 0
0 rows returned
Save an Orange - Use the VCF!
Personal 3D projects
Just Say No to Web 2 Point Blow

Create an Insert SQL - Statement for insert a date

neus8317-Dec-09 1:59

neus83

17-Dec-09 1:59

Hi all,

I was trying and trying ...

in Visual c# .net I use a date which should besaved to the database:

DateTime TimeForTheDatabase = DateTime.Now;
... this is only an example ...

Now I will Insert "TimeForTheDatabase" to the Database:

SqlCommand dataCommand = new SqlCommand("Insert INTO table1 (Text,Datum) VALUES ("Info",TimeForTheDatabase)",dataConnection);

But I get an Error Frown | :(

Can somebody give me a sample how to insert my "TimeForTheDatabase" into my DB ?
Thanks

Re: Create an Insert SQL - Statement for insert a date

Arindam Tewary17-Dec-09 2:15

Arindam Tewary

17-Dec-09 2:15

whats the error????? without error description how people can help you ?

Thanks,
Arindam D Tewary

Re: Create an Insert SQL - Statement for insert a date

Shivendra Pandey17-Dec-09 2:17

Shivendra Pandey

17-Dec-09 2:17

the problem is format.
if u simply want to store datatime do in in db side
example
Insert INTO table1 (Text,Datum) VALUES ("Info",getdate())

Re: Create an Insert SQL - Statement for insert a date [modified]

OriginalGriff17-Dec-09 2:33

OriginalGriff

17-Dec-09 2:33

OK, there are a few problems here. Do it this way:

SqlCommand dataCommand = new SqlCommand("INSERT INTO table1 (Text,Datum) VALUES (@TX,@DT)");
dataCommand.Parameters.AddWithValue("@TX", "Info");
dataCommand.Parameters.AddWithValue("@DT", TimeForTheDatabase);

That way you won't get the syntax error, and you can start to avoid SQL injection attacks later on.

[edit]I forgot the .Parameters bit. D'Oh! | :doh:

[/edit]

All those who believe in psycho kinesis, raise my hand.

modified on Thursday, December 17, 2009 10:07 AM

Re: Create an Insert SQL - Statement for insert a date

loyal ginger17-Dec-09 4:05

loyal ginger

17-Dec-09 4:05

I am not sure SqlCommand has a AddWithValue method. You are supposed to add to the Parameters collection, not to the command object.

Re: Create an Insert SQL - Statement for insert a date

OriginalGriff17-Dec-09 4:09

OriginalGriff

17-Dec-09 4:09

Corrected - thanks!

All those who believe in psycho kinesis, raise my hand.

Re: Create an Insert SQL - Statement for insert a date

cysccnu17-Dec-09 3:34

cysccnu

17-Dec-09 3:34

That is because the time format isn't converted to string.
Try this:

SqlCommand dataCommand = new SqlCommand(string.Format("Insert INTO table1 (Text,Datum) VALUES ('Info',{0})",TimeForTheDatabase),dataConnection);

Re: Create an Insert SQL - Statement for insert a date

PIEBALDconsult17-Dec-09 5:07

PIEBALDconsult

17-Dec-09 5:07

No, never do that. Use parameters.

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