C# Discussion Boards - CodeProject

mdf and ldf file name from Backup DataBase

Thaer Hamael4-Feb-08 22:41

4-Feb-08 22:41

hi all .
i wount to create (mdf) and (ldf) file name when I Create Backup File DateBase by C#.Net Code
who i can do it ?
thanks for any body hellp me Rose | [Rose]

Thaer

Re: mdf and ldf file name from Backup DataBase

Christian Graus4-Feb-08 22:50

Christian Graus

4-Feb-08 22:50

Like I told you yesterday, C# does not know the file format used for database backups, therefore it cannot restore them unless you know the format well enough to write a decompression algorithm.

If you do, please write an article about it.

Christian Graus - Microsoft MVP - C++

"also I don't think "TranslateOneToTwoBillion OneHundredAndFortySevenMillion FourHundredAndEightyThreeThousand SixHundredAndFortySeven()" is a very good choice for a function name" - SpacixOne ( offering help to someone who really needed it ) ( spaces added for the benefit of people running at < 1280x1024 )

How to retrieve mail from pop server and save as outlook format.

Leonardo.ulric4-Feb-08 22:41

Leonardo.ulric

4-Feb-08 22:41

Hi,

I have a problem triying to save the mails retrieve from server in a format that outlook can open, i can save in a txt plane format, but i dont know how to save in an outlook format, somebody can help me or tell me any solution? thanks in advance Cry | :((

Re: How to retrieve mail from pop server and save as outlook format.

Christian Graus4-Feb-08 22:51

Christian Graus

4-Feb-08 22:51

Out look stores all it's mail in one big monolithic file. Your best bet is probably to read the mail but leave it on the server, so outlook can still retrieve it.

Re: How to retrieve mail from pop server and save as outlook format.

Leonardo.ulric4-Feb-08 22:57

Leonardo.ulric

4-Feb-08 22:57

Users should connect to a web page, which show the message their required, im thinking that is not possible do this goal without having outlook install in the server is this correct?

Step by step wizard

haolan4-Feb-08 22:35

haolan

4-Feb-08 22:35

Hi there.

I am trying to create a step by step wizard, for a Windows Mobile 6.0 PDA.

I have used forms as the steps.

In my mainform I have a method that finds the next step from an array. There are three types of steps, and each steps can appear more than once in one session.

When the last step is finished, the first step will be shown again.

In an earlier program, I used panels as my steps, but it was a little difficult to manage each step in the same form window.

In my new version, I am trying to use forms instead, but every time i click next, I can see a short blink, of the programs running in the background.

When i click the next step button in the current step, the following code is used:

mainForm.ShowNextStep();
this.Close();

ShowNextStep finds the next step and use nextStep.ShowDialog();

Is there anything I can do, so i wont see those short blinks, without using panels?

Re: Step by step wizard

Christian Graus4-Feb-08 22:52

Christian Graus

4-Feb-08 22:52

You should use user controls, and place them all on the one form. I guess that's what you mean by panels ?

Re: Step by step wizard

haolan4-Feb-08 22:56

haolan

4-Feb-08 22:56

I used panels as before, thats why i wanted to change it to forms..

I never thought of using usercontrols..

So i will try that..

I am not really expericed in using those.

Can u tell my how to place them and navigate through steps?

Re: Step by step wizard

haolan4-Feb-08 23:26

haolan

4-Feb-08 23:26

Never mind, I found out Smile | :)

Thanks for a fast and great answer Smile | :)

excel references

arkiboys4-Feb-08 22:31

arkiboys

4-Feb-08 22:31

Hi,
I am running the .net 2.0 code below in windows server 2003 R2, standard edition, service pack 2.

string connectionString = @"Provider=Microsoft.Jet.OLEDB.4.0;Data Source=C:\Work\Data.xls;Extended Properties=""Excel 8.0;HDR=YES;""";

DbProviderFactory factory = DbProviderFactories.GetFactory("System.Data.OleDb");

Error is:
Error 4 The type or namespace name 'DbProviderFactory' could not be found (are you missing a using directive or an assembly reference?)

I have tried adding The following dlls but error still remains:
Interop.Excel.dll
Microsoft.Office.Core

What references do I need to add to get this to work?

Thanks

Re: excel references

Giorgi Dalakishvili4-Feb-08 22:47

Giorgi Dalakishvili

4-Feb-08 22:47

Have you tried searching google? You could have easily found all the info you need: DbProviderFactories Class[^]

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Re: excel references

arkiboys4-Feb-08 22:49

arkiboys

4-Feb-08 22:49

added
using system.data.common
and it now compiles.
Thanks

Re: excel references

Giorgi Dalakishvili4-Feb-08 22:50

Giorgi Dalakishvili

4-Feb-08 22:50

You are welcome Smile | :)

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Grid View Editing

rcnairc2k4-Feb-08 22:16

rcnairc2k

4-Feb-08 22:16

Hi,
I have a problem with Grid view. My client required to click anywhere the grid view row and edit the contents, instead of using Edit button which is combined with Grid view. They don’t want to see the edit button .they want only to click the gridrow and it shoud be turned to edit mode.any one have the idea about this. Please help me!!

Rcnair

Check for an enpty picturebox control

Ofori Boadu4-Feb-08 22:11

Ofori Boadu

4-Feb-08 22:11

I am trying to check if a picture box control is enpty. I tried
if (picturebox.Image = null)
{
.......
.......
}
but I get an error stating that "connot implicitly convert system.drawing.image to bool" any idea how I can work around this?

a novice

Re: Check for an enpty picturebox control

Giorgi Dalakishvili4-Feb-08 22:20

Giorgi Dalakishvili

4-Feb-08 22:20

In c# = is an assignment operator, while you need comparison operator.

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Using Offline Application Block

Søren Christensen4-Feb-08 21:38

Søren Christensen

4-Feb-08 21:38

Hi
I'm developing a small desktop client and I'm using the Offline Application Block. When I run my application (both in Debug and Release mode) in Visual Studio 2005 it works fine, but when I publish my application it won't run. I hope someone out there can point me in the right direction since I'm having a hard time finding a solution.

The error:

<br />
Timestamp: 05-02-2008 08:23:14<br />
Message: HandlingInstanceID: 6dadd0fb-233b-44ba-829e-fb4963a24de1<br />
An exception of type 'System.Reflection.TargetInvocationException' occurred and was caught.<br />
-------------------------------------------------------------------------------------------<br />
02/05/2008 09:23:14<br />
Type : System.Reflection.TargetInvocationException, mscorlib, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089<br />
Message : Exception has been thrown by the target of an invocation.<br />
Source : mscorlib<br />
Help link : <br />
Data : System.Collections.ListDictionaryInternal<br />
TargetSite : System.Object _InvokeMethodFast(System.Object, System.Object[], System.SignatureStruct ByRef, System.Reflection.MethodAttributes, System.RuntimeTypeHandle)<br />
Stack Trace :    at System.RuntimeMethodHandle._InvokeMethodFast(Object target, Object[] arguments, SignatureStruct& sig, MethodAttributes methodAttributes, RuntimeTypeHandle typeOwner)<br />
   at System.RuntimeMethodHandle.InvokeMethodFast(Object target, Object[] arguments, Signature sig, MethodAttributes methodAttributes, RuntimeTypeHandle typeOwner)<br />
   at System.Reflection.RuntimeConstructorInfo.Invoke(Object obj, BindingFlags invokeAttr, Binder binder, Object[] parameters, CultureInfo culture)<br />
   at Microsoft.Practices.ObjectBuilder.CreationStrategy.InitializeObject(IBuilderContext context, Object existing, String id, ICreationPolicy policy)<br />
   at Microsoft.Practices.ObjectBuilder.CreationStrategy.BuildUpNewObject(IBuilderContext context, Type typeToBuild, Object existing, String idToBuild)<br />
   at Microsoft.Practices.ObjectBuilder.CreationStrategy.BuildUp(IBuilderContext context, Type typeToBuild, Object existing, String idToBuild)<br />
   at Microsoft.Practices.ObjectBuilder.ReflectionStrategy`1.BuildUp(IBuilderContext context, Type typeToBuild, Object existing, String idToBuild)<br />
   at Microsoft.Practices.ObjectBuilder.ReflectionStrategy`1.BuildUp(IBuilderContext context, Type typeToBuild, Object existing, String idToBuild)<br />
   at Microsoft.Practices.ObjectBuilder.ReflectionStrategy`1.BuildUp(IBuilderContext context, Type typeToBuild, Object existing, String idToBuild)<br />
   at Microsoft.Practices.ObjectBuilder.SingletonStrategy.BuildUp(IBuilderContext context, Type typeToBuild, Object existing, String idToBuild)<br />
   at Microsoft.Practices.ObjectBuilder.TypeMappingStrategy.BuildUp(IBuilderContext context, Type t, Object existing, String id)<br />
   at Microsoft.Practices.ObjectBuilder.BuilderBase`1.DoBuildUp(IReadWriteLocator locator, Type typeToBuild, String idToBuild, Object existing, PolicyList[] transientPolicies)<br />
   at Microsoft.Practices.ObjectBuilder.BuilderBase`1.BuildUp(IReadWriteLocator locator, Type typeToBuild, String idToBuild, Object existing, PolicyList[] transientPolicies)<br />
   at Microsoft.Practices.CompositeUI.Collections.ServiceCollection.BuildFirstTimeItem(Type typeToBuild, Type typeToRegisterAs, Object item)<br />
   at Microsoft.Practices.CompositeUI.Collections.ServiceCollection.Build(Type typeToBuild, Type typeToRegisterAs, Object serviceInstance)<br />
   at Microsoft.Practices.CompositeUI.Collections.ServiceCollection.AddNew[TService,TRegisterAs]()<br />
   at BI2ActiveSalesClient.Infrastructure.Library.SmartClientApplication`2.AddServices()<br />
   at Microsoft.Practices.CompositeUI.CabApplication`1.Run()<br />
   at BI2ActiveSalesClient.Infrastructure.Shell.ShellApplication.RunInReleaseMode()<br />
<br />
Additional Info:<br />
<br />
MachineName : XXXXXXXX<br />
TimeStamp : 05-02-2008 08:23:14<br />
FullName : Microsoft.Practices.EnterpriseLibrary.ExceptionHandling, Version=3.1.0.0, Culture=neutral, PublicKeyToken=null<br />
AppDomainName : DefaultDomain<br />
ThreadIdentity : <br />
WindowsIdentity : XXXXXXXXXXX<br />
	Inner Exception<br />
	---------------<br />
	Type : System.TypeInitializationException, mscorlib, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089<br />
	Message : The type initializer for 'Microsoft.ApplicationBlocks.Cache.CacheManager' threw an exception.<br />
	Source : Microsoft.ApplicationBlocks.Cache<br />
	Help link : <br />
	TypeName : Microsoft.ApplicationBlocks.Cache.CacheManager<br />
	Data : System.Collections.ListDictionaryInternal<br />
	TargetSite : Microsoft.ApplicationBlocks.Cache.CacheManager GetCacheManager()<br />
	Stack Trace :    at Microsoft.ApplicationBlocks.Cache.CacheManager.GetCacheManager()<br />
	   at Microsoft.ApplicationBlocks.SmartClient.Offline.OfflineBlockBuilder..ctor()<br />
	   at Microsoft.ApplicationBlocks.SmartClient.Offline.OfflineBlockBuilder.get_Instance()<br />
	   at BI2ActiveSalesClient.Infrastructure.ConnectionModule.Services.ConnectionManager..ctor()<br />
<br />
		Inner Exception<br />
		---------------<br />
		Type : System.TypeInitializationException, mscorlib, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089<br />
		Message : The type initializer for 'Microsoft.ApplicationBlocks.Cache.CacheService' threw an exception.<br />
		Source : Microsoft.ApplicationBlocks.Cache<br />
		Help link : <br />
		TypeName : Microsoft.ApplicationBlocks.Cache.CacheService<br />
		Data : System.Collections.ListDictionaryInternal<br />
		TargetSite : Microsoft.ApplicationBlocks.Cache.CacheService GetCacheService()<br />
		Stack Trace :    at Microsoft.ApplicationBlocks.Cache.CacheService.GetCacheService()<br />
		   at Microsoft.ApplicationBlocks.Cache.CacheManager..ctor()<br />
		   at Microsoft.ApplicationBlocks.Cache.CacheManager..cctor()<br />
<br />
			Inner Exception<br />
			---------------<br />
			Type : System.Exception, mscorlib, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089<br />
			Message : The XML configuration document is invalid, the ScavengingInfo section defines a type (assembly: 'Microsoft.ApplicationBlocks.Cache', type 'Microsoft.ApplicationBlocks.Cache.Scavenging.LruScavenging') which an instance can't be created.<br />
			Source : Microsoft.ApplicationBlocks.Cache<br />
			Help link : <br />
			Data : System.Collections.ListDictionaryInternal<br />
			TargetSite : Microsoft.ApplicationBlocks.Cache.IScavengingAlgorithm CreateInstance(Microsoft.ApplicationBlocks.Cache.CacheService, Microsoft.ApplicationBlocks.Cache.ICacheStorage, Microsoft.ApplicationBlocks.Cache.ICacheMetadata)<br />
			Stack Trace :    at Microsoft.ApplicationBlocks.Cache.ScavengingInfo.CreateInstance(CacheService cacheService, ICacheStorage cacheStorage, ICacheMetadata cacheMetadata)<br />
			   at Microsoft.ApplicationBlocks.Cache.CacheService..ctor()<br />
			   at Microsoft.ApplicationBlocks.Cache.CacheService..cctor()<br />
<br />
				Inner Exception<br />
				---------------<br />
				Type : System.ArgumentNullException, mscorlib, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089<br />
				Message : The cache storage cannot be null.<br />
Parameter name: cacheStorage<br />
				Source : Microsoft.ApplicationBlocks.Cache<br />
				Help link : <br />
				ParamName : cacheStorage<br />
				Data : System.Collections.ListDictionaryInternal<br />
				TargetSite : Void Microsoft.ApplicationBlocks.Cache.IScavengingAlgorithm.Init(Microsoft.ApplicationBlocks.Cache.CacheService, Microsoft.ApplicationBlocks.Cache.ICacheStorage, Microsoft.ApplicationBlocks.Cache.ICacheMetadata, System.Xml.XmlNode)<br />
				Stack Trace :    at Microsoft.ApplicationBlocks.Cache.Scavenging.LruScavenging.Microsoft.ApplicationBlocks.Cache.IScavengingAlgorithm.Init(CacheService cachingService, ICacheStorage cacheStorage, ICacheMetadata cacheMetadata, XmlNode configSection)<br />
				   at Microsoft.ApplicationBlocks.Cache.ScavengingInfo.CreateInstance(CacheService cacheService, ICacheStorage cacheStorage, ICacheMetadata cacheMetadata)<br />

Thanks in advance

Søren

How to display data dynamically

NarVish4-Feb-08 20:25

NarVish

4-Feb-08 20:25

Hi,
I created Tic-Tac-Toe game. Hope you might have aware of it. Now, two players can play the game in single system.
I would like to make the game as two players can play in their own systems. Ex,
Player1 plays in System1 and
Player2 plays in System2.
Suppose player1 clicks on first cell, the same move should reflect in system2, dynamically.
Next turn goes to Player2. whenever player2 click on one cell out of nine cells, that should reflect in System1.
Hope you understood. Please guide me how can I synchronise both systems.

Thanks and Regards,
Lalitha

Re: How to display data dynamically

J a a n s4-Feb-08 21:24

J a a n s

4-Feb-08 21:24

Check this link...
C# TicTacToe with AI and network support[^]

or

X-O game through LAN[^]

*jaans

Re: How to display data dynamically

NarVish6-Feb-08 23:20

NarVish

6-Feb-08 23:20

Thanks alot Jaans. I downloaded the code from the site given by you. When I made exe to the solution, its working very fine. But, I am unable to debug the code. Whenever I try to connect to other player's system, it is giving the following exception at both client and server side.
"An error occurred: Cross-thread operation not valid: Control 'stbMessage' accessed from a thread other than the thread it was created on."

Please guide me to debug the code.

datalist paging with master pages

chithra.r4-Feb-08 19:42

chithra.r

4-Feb-08 19:42

hi
iam want to do paging in datalist.i found the code and it is working properly.but the actual problem is iam using master page concept in my application and if i use paging inside master page it is not working.also i want to mimic the page information in the footer as

"page1 to 6 of10"..

can anyone lend me hand.

thanks in advance.

pintoo

Re: datalist paging with master pages

J a a n s4-Feb-08 21:16

J a a n s

4-Feb-08 21:16

Try the following method.

Place a contentplaceholder in the master page footer area.

<div id="footer">
<asp:ContentPlaceHolder ID="cphFooter" runat="server" />

</div>

In your datalist page use this content place holder (Other pages you can ignore it.)
<asp:Content ContentPlaceHolderID="cphFooter" ID="ctPager" runat="server">
<asp:Label ID="lblPager" runat="server"></asp:Label>
</asp:Content>

You can set the value of the pager as required
lblPager.Text = "Page 1 to 6 of 10";

*jaans

Windows Service

CodingLover4-Feb-08 19:04

CodingLover

4-Feb-08 19:04

Hi all,

I want to write a Windows Service using C#. I want to execute the following function after a specified time.

private void ServerStat(object state)
{
    //Console.WriteLine("Text");

    const string appName = "groupserver.exe";
    RegistryKey rKey = Registry.LocalMachine.OpenSubKey("SOFTWARE\\Nqual\\Common");

    try
    {
        string appPath = rKey.GetValue("serverLocation").ToString() + "bin\\";

        ProcessStartInfo ps = new ProcessStartInfo(appPath + appName);
        ps.UseShellExecute = true;
        ps.WorkingDirectory = appPath;
        System.Diagnostics.Process.Start(ps);
    }
    catch(Win32Exception ex)
    {
        Console.WriteLine(ex.Message);
    }
}

Edit the OnStart() as follows.

protected override void OnStart(string[] args)
{
    // TODO: Add code here to start your service.
    TimerCallback timerDelegate = new TimerCallback(ServerStat);

    serviceTimer = new Timer(timerDelegate, null, 5000, 5000);
}

Install the service and start the service. But my function not execute. Where I'm going wrong. Help really appreciate. Thanks.

I appreciate your help all the time...
Eranga Smile | :)

Re: Windows Service

CKnig4-Feb-08 20:02

CKnig

4-Feb-08 20:02

My guess is that your Timer will execute but run to the Exception (the normal service-accounts are not allowed to write in the Registry.

Try running your service in an account with administrator rights on the machine.

BTW: Console.WriteLine is rather useless in a windows-service - but you've got an eventlog for free (look for this.Eventlog) - so why don't you use it?

Re: Windows Service

CodingLover4-Feb-08 21:06

CodingLover

4-Feb-08 21:06

Thanks for the replay,

Actually I want to execute an application(*.exe) through windows service. I've just read the registry to find that application and execute it.

Seems my timer gives a problem.

I'm not clear what you say, as alternative for my project. Actually my application(a server application) completely write using C++. Can you please explain it more. Smile | :)

I appreciate your help all the time...
Eranga Smile | :)

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