MAC Validation failed on web cluster - ASP.NET Discussion Boards

Re: Datetime problem

Abhijit Jana6-Aug-09 8:56

Abhijit Jana

6-Aug-09 8:56

You are welcome ! Wink | ;)

Abhijit Jana | Codeproject MVP
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Re: Datetime problem

Blue_Boy6-Aug-09 10:42

Blue_Boy

6-Aug-09 10:42

string dateValue = DateTime.Now.ToString("dd.MM.yyyy");

Just hoping this will helps you more. Smile | :)

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Need help on my Map control application

LucBite6-Aug-09 5:01

LucBite

6-Aug-09 5:01

I am developing an asp.net map control application to help people who cannot find their way to their destination when they go to events, any tips on how i can find something similar to google earth in order to make my application functional?

ML Lingwati

Re: Need help on my Map control application

Abhijit Jana6-Aug-09 7:29

Abhijit Jana

6-Aug-09 7:29

Why you are not using google map.
Please check this article from Code Project,
Google Maps in HTML, ASP.NET, PHP, JSP etc. with ease By Abhishek Sur

Abhijit Jana | Codeproject MVP
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Two web applications question.

Hristiyan6-Aug-09 4:28

Hristiyan

6-Aug-09 4:28

Good day!

I have an ASP.NET web application , but i want to add a forum.
I've choosen the YAF ( Yet Another Forum ). Since its a whole new ( different ) web application i'm having trouble hosting both ( because that way i'll have to pay for hosting every individual application ).
My goal is to achieve by url rewriting : forum.XXXXXXXX.com - the forum where www.XXXXXXXXX.com is the main domain name.
Is it possible for somehow merge the two applications ?
I'm not quite sure what to google

Regards, Hris

Re: Two web applications question.

kstls6-Aug-09 6:03

kstls

6-Aug-09 6:03

Are you not able to create a sub-domain for your
main domain without having to pay extra?

Re: Two web applications question.

Hristiyan6-Aug-09 12:26

Hristiyan

6-Aug-09 12:26

Good evening. Thanks for your quick response !

So what you are saying is that i need to buy a subdomain and host the forum application separately ?

Regards, Hris

MAC Validation failed on web cluster

imnotso#6-Aug-09 4:11

imnotso#

6-Aug-09 4:11

I have an C# .NET web app...small but perfectly formed. We have upgraded to .NET2. We now get an error on navigating off 1 page. When the user clicks 1 of the 2 buttons the app crashes with the well know error.....

'Validation of viewstate MAC failed. If this application is hosted by a Web Farm or cluster, ensure that  configuration specifies the same validationKey and validation algorithm. AutoGenerate cannot be used in a cluster.

Now before you all shout 'put the machine code in the webconfig', I have, on all 7 of the the front ends. And it hasn't cured it. And if it is so important, then how come the rest of the app was working fine without it?

Now I know it's related to viewstate and the fact that the postback can go to another server but I don't know much more.

I have added <enableViewStateMac="false">, this works a treat, cures my problem but has been deemed an unnacceptable fix by our solution architect. Something to do with security.

And suggestions on my next move would be welcome.

Thanks

Re: MAC Validation failed on web cluster

Parwej Ahamad6-Aug-09 6:08

Parwej Ahamad

6-Aug-09 6:08

Hi,

I am also trying to reproduce locally this issue. So that I can trace more specific solution. For the mean while please go throught with this thread:

http://forums.asp.net/p/955145/1173230.aspx[^]

http://blogs.msdn.com/tom/archive/2008/03/14/validation-of-viewstate-mac-failed-error.aspx[^]

Parwej Ahamad
http://parwej.wordpress.com/

ASP.NET Webservice clients

Piya B6-Aug-09 3:57

Piya B

6-Aug-09 3:57

Hello friends,

I made a simple ASP.NET Webservice with one methode that needs some parameters:

[WebMethod]
        public String Person(string Id, string username, string pw)
        {
           //do something
           //return string        
        }

My question is, can a PHP client use this service?

Thanks in advance.

Re: ASP.NET Webservice clients

Abhijit Jana6-Aug-09 4:39

Abhijit Jana

6-Aug-09 4:39

Web Service can be consume by any one. As this is an SOAP XML format

Abhijit Jana | Codeproject MVP
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Selecting from a dropdown menu without the whole page refreshing itself.

LucBite6-Aug-09 3:47

LucBite

6-Aug-09 3:47

I want to know how to be able to interact with asp page controls like buttons and dropdown lists without the whole page refreshing and also be able to use the query string to update the content within the contols without the whole page refreshing itself. Thank you in advance

ML Lingwati

Re: Selecting from a dropdown menu without the whole page refreshing itself.

Vimalsoft(Pty) Ltd6-Aug-09 4:10

Vimalsoft(Pty) Ltd

6-Aug-09 4:10

You can use Ajax. UpdatePanel

Vuyiswa Maseko,

Few companies that installed computers to reduce the employment of clerks have realized their expectations.... They now need more and more expensive clerks even though they call them "Developers" or "Programmers."

C#/VB.NET/ASP.NET/SQL7/2000/2005/2008
http://www.vuyiswamaseko.somee.com
vuyiswa@its.co.za
http://www.itsabacus.co.za/itsabacus/

Need help with calling this method.

kaining896-Aug-09 2:20

kaining89

6-Aug-09 2:20

How do i call the following method which is declared in a vb files

Public Function byteArrayToImage(ByVal byteArrayIn As Byte()) As Image
Dim ms As New MemoryStream(byteArrayIn)
Dim returnImage As Image = Image.FromStream(ms)

Return returnImage
End Function

I need to call this function here(Below)

Protected Sub GridView1_SelectedIndexChanged(ByVal sender As Object, ByVal e As System.EventArgs) Handles GridView1.SelectedIndexChanged

End Sub

Re: Need help with calling this method.

Abhijit Jana6-Aug-09 2:36

Abhijit Jana

6-Aug-09 2:36

kaining89 wrote:
How do i call the following method which is declared in a vb files

As this is inside a file, means it should have a class. Create the object of that class and call the method.

Abhijit Jana | Codeproject MVP
Web Site : abhijitjana.net
Don't forget to click "Good Answer" on the post(s) that helped you.
View My Latest Article

Re: Need help with calling this method.

kaining896-Aug-09 3:17

kaining89

6-Aug-09 3:17

Protected Sub GridView1_SelectedIndexChanged(ByVal sender As Object, ByVal e As System.EventArgs) Handles GridView1.SelectedIndexChanged

obj.byteArrayToImage()

End Sub

but i do not know how to pass the parameter in obj.byteArrayToImage(), what shld be inside ()?

Re: Need help with calling this method.

Vimalsoft(Pty) Ltd6-Aug-09 3:40

Vimalsoft(Pty) Ltd

6-Aug-09 3:40

You have declare your Function like this

Public Function byteArrayToImage(ByVal byteArrayIn As Byte()) As Image
Dim ms As New MemoryStream(byteArrayIn)
Dim returnImage As Image = Image.FromStream(ms)

Return returnImage
End Function

now if you have declare this in same page , then you can access it like this

Protected Sub GridView1_SelectedIndexChanged(ByVal sender As Object, ByVal e As System.EventArgs) Handles GridView1.SelectedIndexChanged

obj.byteArrayToImage(byteArrayIn)


End Sub

but if you have this in a Different class , then you have to create an object of a Class like this

MyClass obj = new MyClass

obj.byteArrayToImage(byteArrayIn)

Hope this Helps

Re: Need help with calling this method.

kaining896-Aug-09 3:58

kaining89

6-Aug-09 3:58

thanks. i placed the same code but obj.byteArrayToImage(byteArrayIn) - (byteArrayIn) is not declared. hope you can assist me with tht

Re: Need help with calling this method.

Vimalsoft(Pty) Ltd6-Aug-09 4:04

Vimalsoft(Pty) Ltd

6-Aug-09 4:04

This is a variable you need to pass in your Function. you have to know where is it coming from i cant know

Set default input language of a text box

benams6-Aug-09 1:56

benams

6-Aug-09 1:56

Hi,
I want to change my textbox default input language,
Currently the default language is English and in order to change it, the user has to hit ALT+SHIFT keys...

Re: Set default input language of a text box

Abhishek Sur6-Aug-09 9:50

Abhishek Sur

6-Aug-09 9:50

you mean to change the language of a textbox. Its totally dependent on the client browser configuration. Well, what google does is it changes the script through trapping the keystrokes.

You may send keystrokes to the server and process it to get the script in actual language. Use AJAX request to the server. Just create an http handler to process those requests.

hope you got my point. In this way you can also place quick suggestions as well... Cool | :cool:

Abhishek Sur

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Application Begin request is not getting called

suzzain6-Aug-09 1:42

suzzain

6-Aug-09 1:42

Hi all,

I have created menu controls with the help of

<code><ul><li><a></code>
tag. The url page defined in the href attribute of anchor tag does not actually exist in the application directory instead, it comes from database and the logic for it is written in the application begin request event in global.asax.cs. but this event is getting called only once and is not getting fired whenever any menu is clicked. Please tell what could be the reason for it. If this event will not be called dynamic pages will not be created. Please help me.

yield return

vishwjeet6-Aug-09 1:32

vishwjeet

6-Aug-09 1:32

Hi,
I am using a enumerable function using "yield return". This allows me to iterate through the items using for each loop. Since this is a lazy evaluation, after each iteration the control returns to the calling function.

How can I use the enumerable function without for each loop?

public static IEnumerable<int> GetValuesUpto(int n)
{

for(int ctr = 1;ctr<=n;ctr++)
{
yield return ctr;
}
}

So, when I call this function i.e.
int[] arr = GetValuesUpto(10);

What would be the result, will it work like a lazy evaluation and will return only the first value, or will it return the desired result?

Waiting for your replies guys!!
Vishwjeet

Re: yield return

Abhishek Sur6-Aug-09 10:24

Abhishek Sur

6-Aug-09 10:24

Iterator blocks are called when you want to fetch the data from the Enumerable.

Actually if you call the the function, it will not be called. Rather if you do a foreach on the Enumerable object the function will be called and will return you 10. Wink | ;)

Just change your code a bit as I did:

IEnumerable<int> arr = Documented.GetValuesUpto(10);
MessageBox.Show(arr.ToList<int>().Count.ToString());

public static IEnumerable<int> GetValuesUpto(int n)
{

    for (int ctr = 1; ctr <= n; ctr++)
    {

       yield return ctr;
    }
            
}

Put a breakpoint in the line IEnumerable<int> arr = Documented.GetValuesUpto(10);. and also a breakpoint within GetValueUpto block. You will see the function is called when we try to call ToList() rather than the actual call to GetValueUpto. This is the main advantage of iterator blocks.

Rose | [Rose]

Abhishek Sur

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C# Uncommon Keywords
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how to get cursor position of the textbox

ansriharsha6-Aug-09 1:25

ansriharsha

6-Aug-09 1:25

hi all,

i am creating a numberbox control and in that i want to find the cursor position so that i can restrict input at certain times at certain locations ...
.
so is thr any way i could get the cursor location or the index of the key pressed.

Thanks in advance

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