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I have host my web application and when I try to login from form i get this error
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.
What is in issue?! Can be .NET Framework version?!
How can I solve this problem?
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Well, you could start by reading the error. Are you in a webfarm ? Are you in a cluster ?
Beyond that, you could try this[^].
Christian Graus
Driven to the arms of OSX by Vista.
Read my blog to find out how I've worked around bugs in Microsoft tools and frameworks.
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Hi,I figured out.
All problem was at server name in which I should gave IP Address,I have contact support of hosting provider and they sent me answer and my problem is solved.
Thanks for your time. 
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Hello
I have a website which I think it has not a good appearance. Please help me. Does anyone know a method to make website beautiful and attractive?
Does anyone know a good and new template for website?
Note that my website is formal and personal.
sincerely
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hasani2007 wrote: Does anyone know a method to make website beautiful and attractive?
You have to use CSS for that.
if you want to make it more Rich, use SilverLight or Flex
hasani2007 wrote: Does anyone know a good and new template for website?
asp.net free website templates[^]
Abhijit Jana | Codeproject MVP
Web Site : abhijitjana.net
Don't forget to click "Good Answer" on the post(s) that helped you.
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Apply CSS,
Use Style to each tags, Apply Skin to Server controls etc.
You can also use Templates..
See this
ASP.NET Free Templates[^]
![Rose | [Rose]](https://codeproject.global.ssl.fastly.net/script/Forums/Images/rose.gif)
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what is this doing in web.config .. what if i remove this
<runtime>
<assemblyBinding xmlns="urn:schemas-microsoft-com:asm.v1">
<dependentAssembly>
<assemblyIdentity name="System.Web.Extensions" publicKeyToken="31bf3856ad364e35"/>
<bindingRedirect oldVersion="1.0.0.0-1.1.0.0" newVersion="3.5.0.0"/>
</dependentAssembly>
<dependentAssembly>
<assemblyIdentity name="System.Web.Extensions.Design" publicKeyToken="31bf3856ad364e35"/>
<bindingRedirect oldVersion="1.0.0.0-1.1.0.0" newVersion="3.5.0.0"/>
</dependentAssembly>
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What do you think it might do ? Why might you do it ?
the word dependant means, that it's something that's required, you depend on it.
Christian Graus
Driven to the arms of OSX by Vista.
Read my blog to find out how I've worked around bugs in Microsoft tools and frameworks.
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we bind custom built assemblies .. depending on the version of the framework or the processorarchitecture
these are not custom built assemblies they are system assemblies.. and only these two are binded ... is this not required for other system assemblies???
i have taken this from an auto generated web.config
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The stuff that ASP.NET ALWAYS uses, is there by default. I would guess this is ASP.NET AJAX, or some other library you have added.
Christian Graus
Driven to the arms of OSX by Vista.
Read my blog to find out how I've worked around bugs in Microsoft tools and frameworks.
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Hi,
I need to save a multiline text into a SQL table. I use the fiedl type is Text.
I found that the multiline mode is not maintained after saving into table, that is to say, all the text become only one line.
thenn when this text is displayed in a view control such as datalist, then it is a very long text line, obviously, not good!
how to treat this problem?
thanks.
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Try to replace the string that your are showing on text box using BR
like,
string strAddress= strAddress.Replace("\r\n", "<BR>");
Hope this may helps you 
Abhijit Jana | Codeproject MVP
Web Site : abhijitjana.net
Don't forget to click "Good Answer" on the post(s) that helped you.
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A simple newline puts character 13 on the input. So if you store it in the database it will hold only character 13(\n)
In case you show in DataList, the formatting is done using HTML, so you need <br/> to have new line.
Replace \n\r with <br/> and it will work.
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I am working on a project and need help that how sms are sent and read on a web page developed in ASP.NET.
please reply if know as soon as possible.
tina.
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tina sharma wrote: please reply if know as soon as possible
That is rude.
You can look into this[^] library.
Hope this helps.
It's not necessary to be so stupid, either, but people manage it. - Christian Graus, 2009 AD
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how to identify the duplicate records in sql server 2005
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First you tell me that what does it has to do with ASP.Net?
Manas Bhardwaj
Please remember to rate helpful or unhelpful answers, it lets us and people reading the forums know if our answers are any good.
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Doesnt relate to ASP.NET 
Use Distinct to your select statement.
Like
Select Distinct Name from Employee
So if there is duplicate name in Employee table, it will be taken once. 
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suppose name is the column in your table that has duplicate values .. use a query something like this
select id,name,count_of_names count(name)
from tablename
groupby name
having count_of_names > 1
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always try to reply to the original post. If you reply to my post, the original guy will not receive any notification.
Anyway.. does it requires groupby when it could be done without it. Yes .. In your case its needed as you used count(name).
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program to restrict textarea to 800 in javascript
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You need to specify a style with a width as 800 px.
And btw, this is NO ASP.Net question.
Manas Bhardwaj
Please remember to rate helpful or unhelpful answers, it lets us and people reading the forums know if our answers are any good.
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yes... you are right,
textarea doesnt take MaxLength...
use this
<script language="javascript" type="text/javascript">
function isValid(elem, maxlen)
{
return (elem.value.length <= maxlen);
}
</script>
<textarea name="txt" onkeypress="return isValid(this, 800);" ><textarea>
Also place rows and columns you want to the textarea.
![Rose | [Rose]](https://www.codeproject.com/script/Forums/Images/rose.gif)
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if(textArea.length > 800)
{
alert("length exceed..");
}
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