I have the following line of code:
[Code]....
If I submit the page.. and no radio buttons were selected I get an error that 'object not set to an instance' is there a 'quick and easy' way to say ... if 'NO ITEMS WERE SELECTED' .. skip this... basically.. IF NULL... skip?
I have uploaded all files to my server. and while im checking the site it shows the following error." Server Error in '/' Application. Validation of viewstate MAC failed. If this application is hosted by a Web Farm or cluster,ensure that <machineKey> configuration specifies the same validationKey"what i have to do/how to fix it.
View 3 RepliesI have an application that works fine, problem rise when a page is waiting for the user response for more than 20 min and then user click a link on the form. The application response with the following 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.
I read a few articles regarding setting the Pages tag in web.config and set the Pages tag to the following -
[code]....
I have a radiobuttonlist inside a datalist itemtemplate and i need to bind the radiobuttonlist dynamically from database I have tried to bind it inside itemdatabound event of datalist but it the result is always duplicated according to the fields in teh database.
for more information:
the database has two columns one for questions and the other is for choices , for the first question with id lets say 1 there are 4 choices, when the radiobutton is binded the result appears to be 4 times duplicated ?
.NET noob here (as in I know next to nothing, I'm trying to pick up some of the scraps left by my developer). Ok, I am getting this error on a number of my .aspx pages: Error while checking url '/': Key cannot be null. Parameter name: key Interestingly, I get this on my homepage on which the only .NET code is in the form of two includes, e.g: <% Response.WriteFile("/includes/footer.aspx") %> These includes in themselves only contain HTML, so I assume the issue can only be related to these or a configuration issue?
View 4 RepliesI have the following class... Compiler Error CS1061 / how to avoid it
[code]....
I do have a log system and the correct error is well explicit there, but I want to give a better message to the user.
I keep trying several ways but I'm using Telerik components and well jQuery and I ended up using both ASP.NET Ajax methods and jQuery, so I use
function pageLoad() {
try { [code]....
as well$(document).ready(function() { ... }
that alert(err) is never fired even upon OnClick events
what's the best approach to avoid this message errors and provide a cleaner way?
all this happens in <asp:UpdatePanel> as I use that when I didn't know better (3 years ago!) and I really don't want to mess up and build all again from scratch
Updated with more error windows after volpav solution
How do i check for empty array?
If I write
If Not ls_filename.Length = 0 then
....
End If
I get object refernce set to null error
I have a simple Entity query:
[code]....
I then check whether one of the result values is more recent than six months ago using an if..then like so:
If rhcexists.First.SignatureDate > Date.Today.AddMonths(-6) Then
End If
However, if there are no results returned this will return an error. Is there a way for me to tell it to act as if the date is older than six months if there is no value at all? e.g., could I in pseudo do something like:
If Exists(rhcexists.First.SignatureDate, Date.Today.AddMonths(-8)) > Date.Today.AddMonths(-6) Then
End If
In my page, if i refer
using System.windows.forms;
using System.web.webcontrols.....
Textbox ambiguous reference error is occured from webcontrols and forms, how can i rectify this error... but i need those two namespaces in my asp.net page.
I think the popup message is a poor idea because OnClientUploadError has already provided developers a good option to handle the error easily in whichever way they prefer. The worst is that if a user clicks OK, he will see a window that should be seen only by software developers. Is there any trick to stop the error alert?
View 9 Repliesi have a command like
SQLCommand cmd = new SQLCommand("insert into customers name values ('"+textbox1.Text+"')",conectionstring);
cmd.ExecuteNonQuery();
now when people enter a (') single quote, this doesnt work. how do i avoid this error as this is driving me nuts!! i cannot prevent users from entering single quotes as names like "O'Connor" contain a single quote. parameterized query doesnt seem to be the best solution as it involves loads of coding and will involve huge changes in the code. as its not a fresh app im making... can some modification in the code above so this can be avoided?
I receive the error message below, I think because the database field in question is null (I realize I probably should not allow null values, but I can't even display the page to allow the user to enter a value---and I would prefer not to enter a default value in SQL).
How do I avoid this error message? If the column is null (and it is supposed to be an integer), do I need to change the value to something like "0" in the code behind---or is there any easier way to do this right in aspx page (see source of error message below)? Either way, I'm not sure how to do either (I can't get any such lines of code to work here). Object cannot be cast from DBNull to other types.
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.InvalidCastException: Object cannot be cast from DBNull to other types.
Source Error:
[Code]....
When I refresh a page (either manually or with meta tags) after uploading an image with AsyncFileUpload, it clears out a RadioButtonList I'm using and this causes errors when the user tries to go to another page. The strangest thing is that the RadioButtonList only clears after the first refresh; when I click the RBL back to the original value, then refresh the page, it doesn't affect the RBL anymore.
All the applicable controls are enclosed in Update Panels.
(I wrote about a similar problem in forums.asp.net/t/1609492.aspx but I suspected that that problem had to do with a ModalPopupExtender and AsycnFileUpload combination. However, after removing the MPE, the problem still occurs so now I can only conclude that the AsynchFileUpload is the problem.)
I get following error: Target string size is too small to represent the XML instance
When I do this: repeater.DataBind();
How can I avoid this?
I've found a lot of similar topics but none of them solves my problem.
I have table structure like that
[Code]....
Everyone suggests to change ntext type to nvarchar(MAX) and life will be beautyfull. But... First, I need
ntext, simply because there should be text in this field.
nvarchar(MAX) equals 4096 bytes which is to small for large text. Second, I already have table with
ntext field, which does not cause this error.
I am building an asp.net application, using II6 on windows server 2003 (vps hosting).
I am confronted with an error I didn't receive on my development machine (windows 7, iis 7.5, 64 bit).
When my wcf service tries launching my query running against a local sql server this is the error I receive:
Memory gates checking failed because the free memory (43732992 bytes) is less than 5% of total memory. As a result, the service will not be available for incoming requests. To resolve this, either reduce the load on the machine or adjust the value of minFreeMemoryPercentageToActivateService on the serviceHostingEnvironment config element.
I have a doubt concerning the Entity Framework in .NET.
I have a simple ASP .NET web page that has to insert some data in SQL Server with this function:
[code]....
The good news is that the code that Insert function encapsulates I can move it to the place which is called. So my question is: What if there is a place in which I would be forced to call the function? How then I could avoid the error. Passing the parameter as reference (I tried and did not work).
i have a asp.net page that have its master page and it contain RadioButtonList1 and i try to do thefollwing
<script type="text/javascript">
var radioButtonList = document.getElementById('<%=RadioButtonList1.ClientID%>');
if(radioButtonList[0].checked)
document.getElementById("_secondTR").style.display = "block";
else if (radioButtonList[1].checked )
document.getElementById("_secondTR").style.display = "none";
}
</script>
<table style="width: 100%">
<tr id="Tr1">
<td>
<asp:RadioButtonList ID="RadioButtonList1" runat="server" BackColor="#FFCC99"
RepeatDirection="Horizontal" Width="117px" onclick="ShowHide()">
<asp:ListItem Value="1">Yes</asp:ListItem>
<asp:ListItem Value="0">No</asp:ListItem>
</asp:RadioButtonList>
</td>
</tr>
<tr id="_secondTR" runat="server" style="display: none">
<td>
<asp:RadioButton ID="Five" runat="server" GroupName="1" BackColor="#669999" />
<asp:RadioButton ID="Four" runat="server" GroupName="1" CausesValidation="True" BackColor="#669999" />
</td>
</tr>
</table>
i can't get RadioButtonList1 from java script ...
i have a on my project a web forum for new users to register and another forum for registerd users to update there details my question is how do i check when the update or the new user insert occurs
if the mail address they use is not alredy used by another user ?
I am creating a DropDownList at runtime.How do I check if a particular value exists (code snippets in VB please)?
View 2 RepliesI have a class called 'Tutorial'. At the top of my page I declare the object as below: [Code]....
The last thing I have is an Add and Save button and what I would like to achieve is add/update the record based on if it exists or not. To do this I would like to check the state of the tutorial object to see if it has been loaded and use its id without needing to put it on the page for reference later.
Will the tutorial object still contain values after postback and how can I check if its been declared?
In my application, if I do not input the value into the textfield, it will show error message: "The value '' is invalid."
However, is it possible to check one more thing: the length of the textfield? For example, it will show the error message if I input more than 10 chars? And is it possible to change the message "The value '' is invalid." to "Missing Value"?
backfolder1=\systemnamefoldername
If
Not Directory.Exists(backfolder1) =
True
Then
Directory.CreateDirectory(backfolder1)
End
If
i am using the above code
but even if the folder exists it creates the directory
i have one multi line text box in my asp page.
while entering content to it , i want to high light the word by red underline if the spelling of word is not correct (just like in word)
i have to do it without using any button , instead while changing text.
