ASP.NET

Validation of viewstate MAC failed..

4-Oct-07 21:28

Nirmala Jyothi wrote:
it is very urgent

this won't really help you from getting fast answer. If you want fast answer, go and ask in some support forums.

Answer : Use a template column to get result like this.

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IamAmit4-Oct-07 21:11

IamAmit

4-Oct-07 21:11

Hello friends, I got this error in my application. What went wrong..and how to resolve it..I am using vs 2005..
Validation of viewstate MAC failed. If this application is hosted by a Web Farm or cluster, ensure that <machinekey> configuration specifies the same validationKey and validation algorithm. AutoGenerate cannot be used in a cluster.
Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.

Exception Details: System.Web.HttpException: Validation of viewstate MAC failed. If this application is hosted by a Web Farm or cluster, ensure that <machinekey> configuration specifies the same validationKey and validation algorithm. AutoGenerate cannot be used in a cluster.

Source Error:

[No relevant source lines]

Source File: App_Web_adminlogin.aspx.4e1cade6.fhtclyxp.0.cs Line: 0

Stack Trace:

[HttpException (0x80004005): Unable to validate data.]
System.Web.Configuration.MachineKeySection.GetDecodedData(Byte[] buf, Byte[] modifier, Int32 start, Int32 length, Int32& dataLength) +2549708
System.Web.UI.ObjectStateFormatter.Deserialize(String inputString) +214

[ViewStateException: Invalid viewstate.
Client IP: 10.8.6.6
Port: 1268
User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.0; en-US; rv:1.8.1.7) Gecko/20070914 Firefox/2.0.0.7
ViewState: /wEPDwULLTE1NjYxMDU5OTgPZBYCAgMPZBYCAg0PDxYCHgdWaXNpYmxlaGRkZO2e2+a2WhZCITPLB7L6SRRWmvRV
Referer: http://watergenie.ca/test/webmaster/adminlogin.aspx
Path: /test/webmaster/adminlogin.aspx]

[HttpException (0x80004005): Validation of viewstate MAC failed. If this application is hosted by a Web Farm or cluster, ensure that <machinekey> configuration specifies the same validationKey and validation algorithm. AutoGenerate cannot be used in a cluster.]
System.Web.UI.ViewStateException.ThrowError(Exception inner, String persistedState, String errorPageMessage, Boolean macValidationError) +116
System.Web.UI.ObjectStateFormatter.Deserialize(String inputString) +251
System.Web.UI.ObjectStateFormatter.System.Web.UI.IStateFormatter.Deserialize(String serializedState) +4
System.Web.UI.Util.DeserializeWithAssert(IStateFormatter formatter, String serializedState) +37
System.Web.UI.HiddenFieldPageStatePersister.Load() +220
System.Web.UI.Page.LoadPageStateFromPersistenceMedium() +83
System.Web.UI.Page.LoadAllState() +35
System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +6953
System.Web.UI.Page.ProcessRequest(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +154
System.Web.UI.Page.ProcessRequest() +86
System.Web.UI.Page.ProcessRequestWithNoAssert(HttpContext context) +18
System.Web.UI.Page.ProcessRequest(HttpContext context) +49
ASP.test_webmaster_adminlogin_aspx.ProcessRequest(HttpContext context) in App_Web_adminlogin.aspx.4e1cade6.fhtclyxp.0.cs Blush | :O

System.Web.CallHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute() +154
System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously) +64

Version Information: Microsoft .NET Framework Version:2.0.50727.42; ASP.NET Version:2.0.50727.210

Re: Validation of viewstate MAC failed..

DavidNohejl4-Oct-07 21:55

DavidNohejl

4-Oct-07 21:55

Obvious question: do you have a web farm?

If yes, do what exception message says. If not, it can be caused by someone (bot) acessing your site with cached (therefore probably invalid) viewstate.

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search in dataset

Sebastian T Xavier4-Oct-07 21:00

Sebastian T Xavier

4-Oct-07 21:00

Hi all,

I have a dataset, i need to search for a string in the dataset. the dataset is not bound to any control. How can i do that? should i get any examples?

Thanking you in advance........

Sebastian

Re: search in dataset

N a v a n e e t h4-Oct-07 21:33

4-Oct-07 21:33

Hi Sebastian,

I think you can take each DataTable from DataSet and use DataTable.Select() command. This will return datarow collection.

Hope this helps

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textbox value gettype()

Sonia Gupta4-Oct-07 20:36

4-Oct-07 20:36

i have some numeric type value in the textbox.when i show the textbox value in the add watch , it shows the value in the double quotes.now the problem is how can i find out - if the textbox contains some numeric value - whether the textbox contans numeic value or not.

Soniagupta1@yahoo.co.in
Yahoo Messenger Id = soniagupta1

Christian Graus4-Oct-07 20:39

Christian Graus

4-Oct-07 20:39

On the client, or the server ? You can do it on the server using regex. I believe javascript also has regex support, but I'm not familiar with it.

Christian Graus - Microsoft MVP - C++

"I am working on a project that will convert a FORTRAN code to corresponding C++ code.I am not aware of FORTRAN syntax" ( spotted in the C++/CLI forum )

Sonia Gupta4-Oct-07 20:40

4-Oct-07 20:40

presently i am debugging my program

Soniagupta1@yahoo.co.in
Yahoo Messenger Id = soniagupta1

Imran Khan Pathan4-Oct-07 21:01

Imran Khan Pathan

4-Oct-07 21:01

try this

int numeicVal;
if(int.TryParse(value),out numeicVal)
{
//its numeric value
}
else
{
//its not numeric value
}

bEST rEGARD

pATHAN

please don't forget to vote on the post that helped you.

Sonia Gupta4-Oct-07 21:06

4-Oct-07 21:06

ThanQ

Soniagupta1@yahoo.co.in
Yahoo Messenger Id = soniagupta1

messagebox

Sonia Gupta4-Oct-07 20:09

4-Oct-07 20:09

can i display the message box in the function under a particular condition?

Soniagupta1@yahoo.co.in
Yahoo Messenger Id = soniagupta1

Re: messagebox

N a v a n e e t h4-Oct-07 20:31

4-Oct-07 20:31

Sonia Gupta wrote:
can i display the message box in the function under a particular condition?

an alert box ? Try

Page.RegisterClientScript("name","JSFun");

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Re: messagebox

kumareshTMC4-Oct-07 20:31

kumareshTMC

4-Oct-07 20:31

hi,

you can use javascript functions to display the message box..

regards

Re: messagebox

Christian Graus4-Oct-07 20:38

Christian Graus

4-Oct-07 20:38

Of course. If the condition is on the server, write the script to show the box only if the condition is met. Doing this all in javascript, should be self evident.

Christian Graus - Microsoft MVP - C++

"I am working on a project that will convert a FORTRAN code to corresponding C++ code.I am not aware of FORTRAN syntax" ( spotted in the C++/CLI forum )

Rating Tool

M_Menon4-Oct-07 20:06

M_Menon

4-Oct-07 20:06

Hi There,

Can someone suggest me some good Rating Tool for .net 2.0
Is it possible to make one?
If there are already such Free Tool.
I found one here on our site, but its compatiable with .net 1.0 only.

Or last option if i have to buy then, can you please suggest me a good one?

Thanks

Cheers
Menon

Re: Rating Tool

N a v a n e e t h4-Oct-07 20:24