Invoke Problem - C# Discussion Boards

Vivek Vijayan10-Jul-09 0:45

10-Jul-09 0:45

how do i use sendkeys.send in my application
how do i verify that i pressed the key
this is the code
there is only a button in my form
and i want to know whether i pressed the capslock

private void button1_Click(object sender, EventArgs e)
{
SendKeys.Send("{+}");

}

This code was posted by me...

Re: how do i use sendkeys.send

dan!sh 10-Jul-09 1:00

dan!sh

10-Jul-09 1:00

Handle KeyDown event of your form.

Place cursor at the end of combo box text

pp.p10-Jul-09 0:35

pp.p

10-Jul-09 0:35

Hi,,
I need to place the cursor at the end of the text in combo box.
This should b done when the combo box get the focus.

How can this be achieved in c#.

Can any one help...

Thanks....

Re: Place cursor at the end of combo box text

Nagy Vilmos10-Jul-09 0:43

Nagy Vilmos

10-Jul-09 0:43

pp.p wrote:
Can any one help

I will help, but not give you the code.

0. Check the event that fires when the focus enters the combo box.
1. You need to know the length of the text.
2. Change the selection start position and length.

Now, that should be enough to get you on your way. Come back soon, ya'here!

Panic, Chaos, Destruction.
My work here is done.

SOAP Messages - Intercepting and redirecting the HTTP call to a remoting server

MrEyes10-Jul-09 0:21

MrEyes

10-Jul-09 0:21

Hello all,

As most of you will already know, when one imports a WSDL into a project the resulting web reference allows the developer to call the WSDL methods, for example:

int resultCode = DoSomething(valueA, valueB, ref valueC, out valueD);

However, this import wraps the entire message creation / send / result parsing into code that is embedded with .NET libraries.

I need to "intercept" the raw outgoing SOAP message and send it somewhere else via remoting. The server at the end of the remoting call will then perform the HTTP send and synchronously return the raw SOAP response. I then need to parse the SOAP response so that it can be parsed into the return/ref/out objects the method (as above) returns.

Does anybody know of a way to do this?

My original stab was to create a code generator app (as an alternative to adding a web reference) that would read the WSDL and generate a callable stub. However I am having trouble generating the SOAP messages and parsing the incoming sync response. So another question would be:

Does anybody know of a way to create/deconstruct SOAP messages?

Re: SOAP Messages - Intercepting and redirecting the HTTP call to a remoting server

Member 440849712-Jan-10 2:02

Member 4408497

12-Jan-10 2:02

I have a pretty strong feeling that you may need to implement SOAP extensions.

Using SOAP extensions you can intercept the outgoing / incoming SOAP messages at different stages in the processing pipeline in order to perform additional functionality with them.

Information can be found here: http://msdn.microsoft.com/en-us/library/system.web.services.protocols.soapextension.aspx[^]

How to find specific HtmlElement on a web page if we know some (X, Y) co-ordinates on the IE window?

svt gdwl10-Jul-09 0:17

svt gdwl

10-Jul-09 0:17

If I know some X,Y co-ordinates of screen (IE window), when a web page is opened in IE, can we get what HTML Element is there at that specific rect position?

I mean, For example, open http://www.google.co.in/ in IE, that page consists the text like "Web", " Images" etc.,
If I know the rect(X,Y) co-ordinates of "Web", then can we get html tag in which the text belongs(as it is present in <B> tag)?
Similarly If I know the rect(X,Y) co-ordinates of " Images", then can we get html tag in which the text belongs(as it is present in <A> tag)?

How can I do this in c#?

Invoke Problem

gehbitte9-Jul-09 23:56

gehbitte

9-Jul-09 23:56

Hello everybody,

i've got this problem:

I create a new Windows Form (BuyWindow.cs) out of the static class Program.cs which shows me a financial chart. I am using a API from a Data Provider (Taipan Realtime) to create Streams which deliver the actual price information for my security. This Streams I also create in the Program.cs:

private static BuyWindow f;
internal static void testwindow()
        {
            if (Tapp == null) { Tapp = new TaiPanRTLib.TaiPanRealtime(); }
                         
            f.build_chart();
          
            f.Show();           

            DataStream TPStream;
            TPStream = (DataStream)Program.Tapp.DataStream;
            TPStream.Add(17956195, 1);
            TPStream.Brief += new _IDataStreamEvents_BriefEventHandler(TPStream_BriefBuyWindow);
            TPStream.Geld += new _IDataStreamEvents_GeldEventHandler(TPStream_GeldBuyWindow);
           
        }
        static void TPStream_GeldBuyWindow(int SymbolNr, float Kurs, float Volume, DateTime Zeit)
        {
            f.update_bid(Zeit, Kurs, false);          
        }
        static void TPStream_BriefBuyWindow(int SymbolNr, float GeldKurs, float Volume, DateTime Zeit_kurs)
        {
            f.update_ask(Zeit_kurs, GeldKurs, false);                   
        }

As you can see, I create the Events TPStream_GeldBuyWindow, TPStream_BriefBuyWindow which are triggered every time a new price exists on the Stock Exchange.

In the BuyWindow.cs there is the Code which updates the Form with the respective price(s):

public void update_bid(DateTime bid_time, float price, bool build)
        {            
                if (this.InvokeRequired)
                {
                    this.Invoke(delegateUpdateBid, new object[] { bid_time, price, build });
                }
                else
                {                  
                    bidseries1.Points.AddXY(bid_time, price);                   
                    if (!build)
                    {
                        current_bid = price;
                        update_label(price.ToString(), "label9");                        
                    }
                }
            }
         }

And here's the Problem: The Price is updated just one SINGLE time. That means, the first price after creating the chart and showing the BuyWindow is delivered and shown on the BuyWindow form. But then, the Stream Events in the Program.cs class are never updated again although there are new prices available.

I found out, if I outcomment the f.updatexxx line(s), the Streams work as intended. Every time a new price is settled on the Exchange, the Events are triggered.

So it seems that the Invoke method somehow causes the Program.cs to loose connections with the Stream Events or whatever.

I hope I described the problem good enough Smile | :)

Any hints would be appreciated!

Re: Invoke Problem

Luc Pattyn10-Jul-09 0:14

Luc Pattyn

10-Jul-09 0:14

Hi,

your code looks fine to me; you do need a similar InvokeRequired pattern for BuyWindow.update_ask() which you did not show.

I would add some logging to the handlers (maybe a Console.WriteLine would do).

BTW: by convention public identifiers use PascalCase, i.e. they start with a capital (update_ask)

Smile | :)

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Re: Invoke Problem

gehbitte10-Jul-09 0:20

gehbitte

10-Jul-09 0:20

Thank you for the Hint Smile | :)

The method update_ask is exactly as implemented as the update_bid method, I just did not show it because of easier reading purpose.

I just moved all the DataStream - respective Code to the BuyWindow.cs, but the Problem still exists.

Re: Invoke Problem

gehbitte10-Jul-09 0:28

gehbitte

10-Jul-09 0:28

Solved!!

I just made DataStream TPStream a Class Variable instead of defining it within a method and now it works!

Re: Invoke Problem

Luc Pattyn10-Jul-09 0:46

Luc Pattyn

10-Jul-09 0:46

Right. I missed that one; your object got collected, giving it some delegates does not keep it alive!

Smile | :)

Luc Pattyn [Forum Guidelines] [My Articles]

The quality and detail of your question reflects on the effectiveness of the help you are likely to get.
Show formatted code inside PRE tags, and give clear symptoms when describing a problem.

code to invoke querty keyboard keys in windows applicattion

Vivek Vijayan9-Jul-09 23:52

Vivek Vijayan

9-Jul-09 23:52

how can i invoke start buttons and all the keys using windows application

Re: code to invoke querty keyboard keys in windows applicattion

dan!sh 9-Jul-09 23:55

dan!sh

9-Jul-09 23:55

SendKeys.Send works for most of the keys.

Re: code to invoke querty keyboard keys in windows applicattion

Vivek Vijayan10-Jul-09 0:15

Vivek Vijayan

10-Jul-09 0:15

what should be given inside the function sendkey.send
how do i invoke the start button

This code was posted by me...

Re: code to invoke querty keyboard keys in windows applicattion

dan!sh 10-Jul-09 0:29

dan!sh

10-Jul-09 0:29

Ctrl + Esc is the shorcut for start menu. Although I have never tried that throug SendKeys.Send though.

Re: code to invoke querty keyboard keys in windows applicattion

Mirko198010-Jul-09 1:08

Mirko1980

10-Jul-09 1:08

Just tried, SendKeys.Send("^{ESC}"); appears to work.

Re: code to invoke querty keyboard keys in windows applicattion

Vivek Vijayan10-Jul-09 3:08

Vivek Vijayan

10-Jul-09 3:08

it din work.pls help me

This code was posted by me...

Re: code to invoke querty keyboard keys in windows applicattion

Mirko198010-Jul-09 3:16

Mirko1980

10-Jul-09 3:16

Well, it works on my machine. So, unless you provide more details on how it doesn't work for you, I'm afraid no one here will be able to help you.

Re: code to invoke querty keyboard keys in windows applicattion

Vivek Vijayan10-Jul-09 21:04

Vivek Vijayan

10-Jul-09 21:04

this is my code

private void page_Load
{
if(condition)
//invoke the start key. i want the menu to pop up just as we click the start menu

SendKeys.Send("^{ESC}");
}

This code was posted by me...

Re: code to invoke querty keyboard keys in windows applicattion

Mirko198013-Jul-09 0:15

Mirko1980

13-Jul-09 0:15

Wait a moment: page_Load? Just to be sure: are we talking about Window Application or about a Web Application?
If you are trying to send keys through a web application that will newer work, maybe the keys will be sent to the server machine running the site, but I'm not really sure about that.

Adobe Acrobat PDF link cann't work on windows form

Bhim Prakash Singh9-Jul-09 22:48

Bhim Prakash Singh

9-Jul-09 22:48

I am using C# and have created a regular Windows form. I have used COM and registered AxAcroPDFLib.AxAcroPDF. Here is my code;

axAcroPDF1.LoadFile("myfile.pdf")
axAcroPDF1.Show();
MessageBox.Show("Showing...");

This works fine. But, just like the browser, but PDF file links can't work. I have the full version of Adobe Acrobat installed, Standard 8.0. I also have the Pro. version 7.1.0 on another PC. When I click on link ,Its can't open link URL.

Thank you for any help. please.

Repost?

Manas Bhardwaj9-Jul-09 22:51

Manas Bhardwaj

9-Jul-09 22:51

Ignore repost

Manas Bhardwaj
Please remember to rate helpful or unhelpful answers, it lets us and people reading the forums know if our answers are any good.

Re: Adobe Acrobat PDF link cann't work on windows form

Vasudevan Deepak Kumar10-Jul-09 2:57

Vasudevan Deepak Kumar

10-Jul-09 2:57

A google search of pdf viewer for windows forms should have got you this:

http://www.componentsource.com/products/expertpdfpdfviewer/index.html[^]

Vasudevan Deepak Kumar
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adobe acrobat pdf link cann't work on windows form

Bhim Prakash Singh9-Jul-09 22:47

Bhim Prakash Singh

9-Jul-09 22:47

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