C# Discussion Boards - CodeProject

Re: How to read XML file from end/last using filestream pointer

Nader Elshehabi26-Dec-06 7:28

26-Dec-06 7:28

Previous line wouldn't work directly. You can seek reversely byte by byte until you read a New Line character. This way you'd know that the last line has ended, and now you are in the previous line.

But this is very tedious. Are you sure you can't just use XPath to get your nodes?

Regards

Simulate typing in a texbox control? Newbie Needs Help!

Basement Dweller25-Dec-06 18:25

Basement Dweller

25-Dec-06 18:25

Hello Freinds,
I am a newbie of about 4 months old, and have been trying to figure out how to simulate typing in a textbox control. I seem to have it all figured out except for the fact that the text appears all at once into the txtbox control rather than one character at a time and at a specified time delay.

What i have done so far:

I have a windows form with a button called (btnType)and a textbox(txtType).
When the button is clicked data is read from a comma deliminated file into the "string[]DeliminatedStrings" and from there the chosen deliminated string is loaded into a Char[] called "charSubstring" which has two parameters, "int Starting index, and Length of substring. The last "while" statement concatinates 1 letter of the substring from the deliminated file at a time, assigning it to the text property of the textbox control called txtType.

The "Tread.Sleep" command is used inside the "while" statement so that the text that is being assigned to the textbox control will be assigned at a delayed interval. I was hoping that at runtime this would simulate a user typing text, one character at a time, however, it appears that i have got something wrong because the text appears all at once into the textbox control.

I have messed with the delay times for the Thread.Sleep method but to no avail. It seems that all the delays happen first than the text is assigned all at once, instead of after each individual character assignment like i was hoping. Any help would be greatly appreciated.

Thanks Code project!

private void btnType_Click(object sender, System.EventArgs e)
{
StreamReader srReadFile = new StreamReader("C:/file.txt");
string readFile = string.Empty;
string[]DeliminatedStrings;
string txt2type;
char[] charSubstring;
int arrayPosition = 0;
int delay = 300;

while ((readFile = srReadFile.ReadLine())!= null)
{
DeliminatedStrings = readFile.Split(',');
txt2type = DeliminatedStrings[1];
charSubstring = txt2type.ToCharArray(0,txt2type.Length);

while(arrayPosition <= txt2type.Length - 1)
{
System.Threading.Thread.Sleep(delay);
txtType.Text = txtType.Text + charSubstring[arrayPosition].ToString();
arrayPosition ++;
}
}
}

Re: Simulate typing in a texbox control? Newbie Needs Help!

Stefan Troschuetz25-Dec-06 21:14

Stefan Troschuetz

25-Dec-06 21:14

The text gets inserted all at once as your btnType_Click event handler runs on the main UI thread and therefor no other messages are processed until it is done. They are queued in the message pump and get executed after the event handler finishes. Take a look at the Control.Refresh method that forces a visual control to redraw itself immediately.

"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

Error while installing .NET 3.0 runtime.

jdkulkarni25-Dec-06 18:03

jdkulkarni

25-Dec-06 18:03

Hello All,
I am trying to install .NET 3.0 runtime on Windows XP with SP1. I'm havling everything that is required as prerequisite. But I am receiving following error. Can anybody please help me?
[12/22/06,11:55:14] WIC Installer: [2] Error code 1603 for this component means "Fatal error during installation.
"
[12/22/06,11:55:14] WIC Installer: [2] Setup Failed on component WIC Installer
[12/22/06,11:55:21] WapUI: [2] DepCheck indicates WIC Installer is not installed.
[12/22/06,11:55:22] WapUI: [2] DepCheck indicates Microsoft .NET Framework 3.0 was not attempted to be installed.
[12/22/06,11:57:27] WIC Installer: [2] Error code 1603 for this component means "Fatal error during installation.
"
[12/22/06,11:57:27] WIC Installer: [2] Setup Failed on component WIC Installer
[12/22/06,11:57:35] WapUI: [2] DepCheck indicates WIC Installer is not installed.
[12/22/06,11:57:35] WapUI: [2] DepCheck indicates Microsoft .NET Framework 3.0 was not attempted to be installed.
[12/22/06,12:07:10] WIC Installer: [2] Error code 1603 for this component means "Fatal error during installation.
"
[12/22/06,12:07:10] WIC Installer: [2] Setup Failed on component WIC Installer
[12/22/06,12:07:18] WapUI: [2] DepCheck indicates WIC Installer is not installed.
[12/22/06,12:07:18] WapUI: [2] DepCheck indicates Microsoft .NET Framework 3.0 was not attempted to be installed.
[12/22/06,12:38:26] WIC Installer: [2] Error code 1603 for this component means "Fatal error during installation.
"
[12/22/06,12:38:26] WIC Installer: [2] Setup Failed on component WIC Installer
[12/22/06,12:38:35] WapUI: [2] DepCheck indicates WIC Installer is not installed.
[12/26/06,09:41:29] WIC Installer: [2] Error code 1603 for this component means "Fatal error during installation.
"
[12/26/06,09:41:30] WIC Installer: [2] Setup Failed on component WIC Installer
[12/26/06,09:41:54] WapUI: [2] DepCheck indicates WIC Installer is not installed.
[12/26/06,09:49:05] WapUI: [2] DepCheck indicates XPSEPSC x86 Installer was not attempted to be installed.
[12/26/06,09:49:05] WapUI: [2] DepCheck indicates Windows Communication Foundation was not attempted to be installed.
[12/26/06,09:49:06] WapUI: [2] DepCheck indicates Windows Presentation Foundation was not attempted to be installed.
[12/26/06,09:49:06] WapUI: [2] DepCheck indicates Windows Workflow Foundation was not attempted to be installed.
[12/26/06,09:49:07] WapUI: [2] DepCheck indicates Microsoft .NET Framework 3.0 was not attempted to be installed.
[12/26/06,09:58:31] WIC Installer: [2] Error code 1603 for this component means "Fatal error during installation.
"
[12/26/06,09:58:32] WIC Installer: [2] Setup Failed on component WIC Installer
[12/26/06,09:58:41] WapUI: [2] DepCheck indicates WIC Installer is not installed.
[12/26/06,10:02:45] WIC Installer: [2] Error code 1603 for this component means "Fatal error during installation.
"
[12/26/06,10:02:45] WIC Installer: [2] Setup Failed on component WIC Installer
[12/26/06,10:02:53] WapUI: [2] DepCheck indicates WIC Installer is not installed.
[12/26/06,10:10:24] WIC Installer: [2] Error code 1603 for this component means "Fatal error during installation.
"
[12/26/06,10:10:24] WIC Installer: [2] Setup Failed on component WIC Installer
[12/26/06,10:10:34] WapUI: [2] DepCheck indicates WIC Installer is not installed.
[12/26/06,10:10:35] WapUI: [2] DepCheck indicates Microsoft .NET Framework 3.0 was not attempted to be installed.
[12/26/06,10:13:08] WIC Installer: [2] Error code 1603 for this component means "Fatal error during installation.
"
[12/26/06,10:13:08] WIC Installer: [2] Setup Failed on component WIC Installer
[12/26/06,10:13:17] WapUI: [2] DepCheck indicates WIC Installer is not installed.
[12/26/06,10:13:17] WapUI: [2] DepCheck indicates Microsoft .NET Framework 3.0 was not attempted to be installed.
[12/26/06,10:23:29] VS Scenario: [2] *** Blocking Components exist and must be satisified before continuing to install ***
[12/26/06,10:23:30] VS Scenario: [2] Only x64 platforms are supported
[12/26/06,10:23:30] VS Scenario: [2] *** End of Blocking Component List ***
[12/26/06,10:23:45] VS Scenario: [2] Failed to pass the Warnings/Blocks checks in CVSScenario::Start()
[12/26/06,10:27:02] WIC Installer: [2] Error code 1603 for this component means "Fatal error during installation.
"
[12/26/06,10:27:02] WIC Installer: [2] Setup Failed on component WIC Installer
[12/26/06,10:27:08] WapUI: [2] DepCheck indicates WIC Installer is not installed.

Frown | :(

Jayant D. Kulkarni
Brainbench Certified Software Engineer in C#, ASP.NET, .NET Framework and ADO.NET

Re: Error while installing .NET 3.0 runtime.

Vega0225-Dec-06 19:36

Vega02

25-Dec-06 19:36

Windows XP SP1 is not supported by the .NET Framework 3.0. Can you install WinXP SP2 on the machine, then install the Framework?

Re: Error while installing .NET 3.0 runtime.

jdkulkarni25-Dec-06 19:52

jdkulkarni

25-Dec-06 19:52

Thanks for the reply and sorry, I am having Win XP SP2 only. But still it gives the same error. My patch is updated to date. Any solution? Sniff | :^)

Jayant D. Kulkarni
Brainbench Certified Software Engineer in C#, ASP.NET, .NET Framework and ADO.NET

Re: Error while installing .NET 3.0 runtime.

Vincent Reynolds26-Dec-06 4:27

Vincent Reynolds

26-Dec-06 4:27

I notice the message "[12/26/06,10:23:30] VS Scenario: [2] Only x64 platforms are supported". Are you trying to install the X64 redistributable on a 32-bit platform?

Re: Error while installing .NET 3.0 runtime.

jdkulkarni26-Dec-06 17:27

jdkulkarni

26-Dec-06 17:27

I do not know exactly what this error means. I have downloaded the .NET 3.0 runtime and trying to install. As per the system requirements I am having everything in place.

Jayant D. Kulkarni
Brainbench Certified Software Engineer in C#, ASP.NET, .NET Framework and ADO.NET

checkedlistBox .net 2.0

fmardani25-Dec-06 16:21

fmardani

25-Dec-06 16:21

Has anyone had any issues with checkedlistBox control when clicking on the items checkboxes?
Every time, I click on the checkboxes, it appears as if the checkbox image partly dissapears. This does not happen if I click on the item itself.
Thanks

listitem

fmardani25-Dec-06 16:20

fmardani

25-Dec-06 16:20

Is there a listItem class in winform 2.0 ?
For example, in 1.x I can declare a variable as ListItem but do not find this in .net 2.0
Thanks

Re: listitem

Luc Pattyn25-Dec-06 17:11

Luc Pattyn

25-Dec-06 17:11

The ListItem class that exists in 1.1 also exists in 2.0

my Visual Studio C# Express documents it at
ms-help://MS.VSExpressCC.v80/MS.NETFramework.v20.en/cpref16/html/T_System_Web_UI_WebControls_ListItem.htm

Smile | :)

Luc Pattyn

c# application

Dritt25-Dec-06 10:57

Dritt

25-Dec-06 10:57

Hi.
Is it possible to find an application (C# code) that you can save sim numbers as text file.

Thanks

Dritt

Re: c# application

Laubi25-Dec-06 11:24

Laubi

25-Dec-06 11:24

What do you mean with "sim numbers"? The SIM number found on sim cards (mobile phone..)?

Re: c# application

Dritt25-Dec-06 11:47

Dritt

25-Dec-06 11:47

Correct, the SIM number found on sim cards.

Re: c# application

Laubi25-Dec-06 12:56

Laubi

25-Dec-06 12:56

I'm not sure wheter AT+CIMI or AT+CGSN returns the right value or not.. According do some documents there are different implementations!

But everything else is pretty easy as long as there is an easy way to communicate with your phone (bluetooth and irda are usually not easy as long as there is no virtual com port available for them). Just send these AT commands to your phone and read the input!

Don't have an example in C# here but I've played with at commands with java in the past and it worked pretty well!

Re: c# application

Laubi25-Dec-06 12:58

Laubi

25-Dec-06 12:58

Ou this was easy.. Just use the search function on this site and you'll find this: http://www.codeproject.com/smartclient/phoneat.asp It's written in vb.net but I guess this doesn't matter as everything is pretty similar and it shows the concept of using at-commands really nice!

Re: c# application

Ravi Bhavnani25-Dec-06 11:27

Ravi Bhavnani

25-Dec-06 11:27

I don't know what "sim" numbers are are (I'm guessing you meant "some numbers"), but if you're looking to write numeric data to a file, this[^] article may help.

/ravi

This is your brain on Celcius
Home | Music | Articles | Freeware | Trips
ravib(at)ravib(dot)com

Mouse speed

conemajstor25-Dec-06 8:25

conemajstor

25-Dec-06 8:25

Can anybody help me !I want to make a application for Counting Mouse Speed.

nemanja

Re: Mouse speed

Laubi25-Dec-06 11:15

Laubi

25-Dec-06 11:15

Do you know how to use hooks? If yes you could use it to get the mouse position.. Get the current time when the event is raised and do some trivial math and you have your speed!

Get All Open Windows

MasterYoda7925-Dec-06 8:05

MasterYoda79

25-Dec-06 8:05

Hi!

I want to get the window handles of all the open windows.

I tried using FindWindow method in User32 but it works only when I supply a window name or a window class.

When both parameters are null that method does not seem to work properly.

Does anyone know why? And can someone help me with a proper method to use?

Also the Spy++ shows lots of windows (how do I get windows shown in the Taskbar?)

Thanx in Advance Smile | :)

Re: Get All Open Windows

Laubi25-Dec-06 11:18

Laubi

25-Dec-06 11:18

What should FindWindow return if both parameters are null? There is no such window! Every window should have at least a classname..

Do you know EnumWindows? It's the win32 api method with which you'll easily get a list of all windows..

Re: Get All Open Windows

MasterYoda7925-Dec-06 15:26

MasterYoda79

25-Dec-06 15:26

Thank You Very Much. Smile | :)

How to develop line art based program

code_explorer25-Dec-06 6:03

code_explorer

25-Dec-06 6:03

Dear Friends,

I want to know that how line art based programs like autocad. Or progrms where we can draw circles or lines, drag them, join two lines at a point are developed. Please guide me if you have source code of any small program please post it or email it I will be very much thankful to you.

Re: How to develop line art based program

gnadeem25-Dec-06 7:40

gnadeem

25-Dec-06 7:40

hi,
System.Drawing.Drawing2D[^]
is the namespace you need to explore.
to acheive advanced functionality , obviously you will have to use mathematics formulae etc.

Q About composite control

Lior S25-Dec-06 5:23

Lior S

25-Dec-06 5:23

Hello,

I created a composite control and one of the properties isn't initiating on the design mode and i get ,because of other function which uses this value, an error massage.

 [Bindable(true),<br />
        Category("Cells"),<br />
        DefaultValue(typeof(Color),"White"),<br />
        Description("The cells Color of the table")]<br />
        public Color CellsColor<br />
        {<br />
            get<br />
            {<br />
<br />
                EnsureChildControls();<br />
                if (((object)ViewState["CellsColor"]) == null)<br />
                    return Color.White;<br />
                return ((Color)ViewState["CellsColor"]);<br />
            }<br />
            set<br />
            {<br />
<br />
                EnsureChildControls();<br />
                if (value.IsSystemColor)<br />
                    DataGrid.ItemStyle.BackColor = Color.White;<br />
                else<br />
                    DataGrid.ItemStyle.BackColor = (Color)value;<br />
                ViewState["CellsColor"] = DGrec.ItemStyle.BackColor;<br />
<br />
            }<br />
        }

i get the error massage when i drag the control to a page for the first time,
after i change the value in the property box also for the first time,
the variable gets the proper value and the error massage clears so i can see the actual control in the design view.

is someone familiar with the property initiation and why i get this error?

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