C# Discussion Boards - CodeProject

Polymorpher3-Oct-07 10:40

3-Oct-07 10:40

I am writing an installer class for a custom action...there are certain files contained in the same directory as the executable installer(ie the msi) that i need access to, however when you launch an msi it in return launches a program located here C:\WINDOWS\system32\msiexec.exe when you try to user the current directory .\\somefile.extension you end up getting an error saying it couldnt find the file at C:\WINDOWS\system32\somefile.extension...

The question is, does anyone know how to get the directory that the msi was launched from?

Any help at all would be great. Thanks everyone.

--
"Keyboard not found. Press < F1 > to RESUME. "
Source unknown (appears in many common BIOSes as a real error message)

Re: MSI Launch Directory

Dave Kreskowiak9-Oct-09 12:25

Dave Kreskowiak

9-Oct-09 12:25

Normally, you don't. Everything you would normally need should be in the installer. Any custom actions will know the references to files inside the installer, where they are unpacked, and at which time custom actions are OK to run.

A guide to posting questions on CodeProject[^]

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

WSDL Namespaces

pdalbe013-Oct-07 10:39

pdalbe01

3-Oct-07 10:39

I'm working on a WCF application and I'm not clear on industry standards regarding the namespaces and URLs. I know that there are 4 places in the managed code to set the WSDL namespaces (ServiceBehavior, DataContract, ServiceContract and binding).

So say we have something like this:

namespace Widget.Services.Contracts.Foo
{
[ServiceContract(Namespace = "<servicecontract>", Name="FooInterface")]
public interface IFoo
{
[OperationContract]
List GetByFooId(foo2 foo);
}

[DataContract(Namespace="<datacontract>", Name="Foo")]
public class Foo
{
[DataMember]
int FooId;
[DataMember]
string FooDesc;
//some other fields
}
}

namespace Widget.Services.Foo
{
[ServiceBehavior(Namespace = "<servicebehavior>", Name="FooService")]
public interface FooService
{
List GetByFooId(Foo foo)
{
//do some work and return foo
}
}
}

<service behaviorconfiguration="FooBehavior" name="Widget.Services.Foo">
<endpoint address="" binding="wsHttpBinding" bindingconfiguration="wsHttpServiceBinding" name="FooService" contract="Widget.Services.Contracts.Foo.IFoo" bindingnamespace="<bindingNamespace>">
<host>
<baseaddresses>
<add baseaddress="http://localhost:8010/Widget/FooService">

1) Do all 4 places commonly get the same WSDL namespace? Or is there typically a mapping/translation of CLR namespaces to WSDL namespaces (because of how we have namespaced our classes)?

2) What are the industry standards/common practice for the namespaces? I know that people recommond adding year and month to the namespace for versioning, but does that mean the base address for the endpoint should have that info too? I've read http://www.pluralsight.com/blogs/kirillg/archive/2006/06/18/28380.aspx and while it's very useful, it doesn't describe what the ideal namespaces should be.

3) Would the namespace for the WSDLs (Because svcutil will generate a few WSDLs in this scenario) be the same as the URL for the WSDLs (which depends on the baseAddress)?

I guess, in general, my overall question is:

4) What would the common practice/industry standard dictate as the namespace for <bindingnamespace>, <contractnamespace>, <servicebehavior> and <servicecontract> in my example?

Any information about this would be much appreciated. Thanks!

Change Registry Key Name [modified]

Dino2Dino3-Oct-07 10:07

Dino2Dino

3-Oct-07 10:07

Hello,

I was trying to change the registry key name programmatically in .net. How do I go about this?

Thanks
D

-- modified at 17:20 Wednesday 3rd October, 2007

Re: Change Registry Key Name

ChrisKo3-Oct-07 13:31

ChrisKo

3-Oct-07 13:31

You could just use Google.

Here's the information you need from MSDN. The Microsoft.Win32 namespace has everything you need through the Registry and RegistryKey classes.

http://msdn2.microsoft.com/en-us/library/microsoft.win32(VS.80).aspx[^]

Re: Change Registry Key Name

ChrisKo3-Oct-07 13:59

ChrisKo

3-Oct-07 13:59

You can use the SetValue(string name, object value, RegistryValueKind valueKind) to set a value to a key instead of my use of GetValue() below.

That should give you enough information to navigate the registry on your own.

RegistryKey hklm = Registry.LocalMachine;
hklm.OpenSubKey("\SOFTWARE\Microsoft\Windows NT\CurrentVersion").GetValue("BuildLab");

Forgot to include this information, you need to reference the Microsoft.Win32 namepace

using Microsoft.Win32;

Re: Change Registry Key Name

Dino2Dino4-Oct-07 10:04

Dino2Dino

4-Oct-07 10:04

Hii...Thanks for the info.

However I was looking to change the name of the key, not the value/Type of Key. A fn for which is not avaialble in the MS.win32 namespace.

I was wondering, if there was any API etc.

Thanks
D

Re: Change Registry Key Name

ChrisKo4-Oct-07 10:23

ChrisKo

4-Oct-07 10:23

You could just delete the key and then recreate it with the new name. All that is supported with the Registry and RegistryKey classes found in the Microsoft.Win32 namespace. There is no need to make an API call to do this.

Re: Change Registry Key value/Type/Data fields.

Dino2Dino8-Oct-07 11:30

Dino2Dino

8-Oct-07 11:30

Sorry for putting up the wrong names.
I was trying not to edit the key but the value/Type/Data fields of a key.

Property Grid Help Position

greba3-Oct-07 9:53

greba

3-Oct-07 9:53

Is is possible to change the position of the help display in a property grid? I don't see a property that allows you to do this. I only see ones that allow you to change the colour, and it's visibility.

Thanks,

Greba

Re: Property Grid Help Position

TJoe3-Oct-07 10:33

TJoe

3-Oct-07 10:33

Check out this[^].

Take care,
Tom

-----------------------------------------------
Check out my blog at http://tjoe.wordpress.com

dropdownlist initial value

anuradha.rrao3-Oct-07 9:16

anuradha.rrao

3-Oct-07 9:16

I have a dropdownlist that is bound to a recordset. The default selected
item has turned out to be the first record in my table. I need a row that
has value = 0 and text showing "--ALL---".

Regards,
Anuradha

Re: dropdownlist initial value

Pete O'Hanlon3-Oct-07 9:23

Pete O'Hanlon

3-Oct-07 9:23

So insert a row like this after you have databound to the list. Note - you will have to insert this at row 0.

Deja View - the feeling that you've seen this post before.

Re: dropdownlist initial value

anuradha.rrao3-Oct-07 9:27

anuradha.rrao

3-Oct-07 9:27

Thanx a ton Pete O'Hanlon! I used it this way and it worked:
DropDownList1.Items.Insert(0, new ListItem("Select", "0"));

Regards,
Anuradha.

Re: dropdownlist initial value

Pete O'Hanlon3-Oct-07 9:35

Pete O'Hanlon

3-Oct-07 9:35

No problem. I'm glad to help - and it's great when the solution is so easy to implement. Big Grin | :-D

Deja View - the feeling that you've seen this post before.

Re: dropdownlist

anuradha.rrao3-Oct-07 9:56

anuradha.rrao

3-Oct-07 9:56

Ok, now having solved the problem of setting an initial vale to the drop down list, I am facing a new problem. I am using a RequiredFieldValidator to validate that some value is selected from the dropdownlist. Now,since the initial value is already set, it doesnt show an error message if I click 'Save' button without selecting a value. How do I solve this one now? The logic if I may see, is that I need to check id the value in the dropdownlist has changed after page load. But I am not sure how this can be done.

Can you help me on this one as well, please?

Regards,
Anuradha

Re: dropdownlist

pmarfleet3-Oct-07 10:53

pmarfleet

3-Oct-07 10:53

Use a CompareValidator control instead and test whether the value of your DropDownList is not equal to zero.

Although, if a valid selection is always required from this DropDownList, is it necessary to put a dummy item in the list? If you omit this, the user will have made a valid selection by default.

Paul Marfleet

Re: dropdownlist

anuradha.rrao3-Oct-07 22:44

anuradha.rrao

3-Oct-07 22:44

Thanks Paul, I tried what you said, but the problem was that in a CompareValidator I needed to mention the Control to compare as well as the control to be compared. So I looked out for another option. What I did was i added the following code on page load:
DropDownList1.SelectedItem.Value="";
This nullifies the 0 th row value of the drop down list and allows the req field validator to work.

So assume a custom validator is not req..What say?

Regards,
Anuradha

Re: dropdownlist

pmarfleet3-Oct-07 22:53

pmarfleet

3-Oct-07 22:53

Set the ValueToCompare property of your CompareValidator control and not the ControlToCompare property. This will allow you to compare the value of your input control against a literal value.

Paul Marfleet

Re: dropdownlist

Pete O'Hanlon3-Oct-07 22:24

Pete O'Hanlon

3-Oct-07 22:24

As Paul said, you can use a Compare validator or, alternatively, you could use a CustomValidator as well.

Deja View - the feeling that you've seen this post before.

Re: dropdownlist

anuradha.rrao3-Oct-07 22:47

anuradha.rrao

3-Oct-07 22:47

Thanx Pete...

barcode algorithm

memaia3-Oct-07 8:49

memaia

3-Oct-07 8:49

any one can tell me the algorithm of barcode algorithm
Rose | [Rose]

Re: barcode algorithm

DanB19833-Oct-07 9:09

DanB1983

3-Oct-07 9:09

As far as i am aware the barcode reader just reads a string much like you could put 12345678 into a keyboard. Its upto you how you query your datastore to match products etc

Dan

Reminder Project

MumbleB3-Oct-07 7:57

MumbleB

3-Oct-07 7:57

Hi Guys. I need a little advice. I am attempting to write a little reminder for my girlfriend. I orriginaly tried storing the details in a .mdf which worked OK for storing but then I couldn't figure out how to check if the reminder date and time == DateTime.Now. I was then advised here to try using XML which I then tried, considering I didn't know much about XML. This worked fine and the only problem i had with thsi was that when the reminder date and time == DateTime.Now it like opped up 60 message boxes, one for every tick on the timer. I would like to know how I can get it to only pop up one message box or advice on the best way to do this. Thanks in advance.

Re: Reminder Project

kubben3-Oct-07 8:15

kubben

3-Oct-07 8:15

You probably need another varible. Something like

bool sentReminder = false;
if (time == datetime.now && !sendreminder)
{
  sentReminder = true;
//do your thing
}

if (time != datetime.now)
{
  //re-set for next time
  sentReminder = false;
}

Anyway, that is one quick thought on what you could do.

Ben

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