I am using AjaxToolkit 4.0 which suggests to use ToolkitScriptManager in place of ScriptManager. But when I am using ToolkitScriptManager, it throws javascript exception when Page_ClientValidate() in called from javascript. However, this error is not coming when ScriptManager is used. Can anybody tell me how to make Page_ClientValidate() run when using ToolkitScriptManager?
View 1 RepliesI have a button on which I wish to validate a specific ValidationGroup in ASP.NET. This button is not a server control, but a standard a tag with an onclick event on.
I have multiple validation groups on this page, so by calling Page_ClientValidate() is not enough, as the other validators will kick in as well.
I have an ASP.NET page with a jQuery dialog that is displayed to change some data. I am setting up the jQuery dialog so that when the user clicks the OK button it calls ASP.NET's
Page_ClientValidate('validationGroup') via javascript, finds all the invalid controls and changes their CSS class. So here's the scenario: the user opens the dialog, keys in some invalid data, clicks OK (receiving the validation messages), and then clicks Cancel.
Now the dialog is closed, but the validation messages are still there, so that when they open the dialog again, the data goes back to the way it was initially, but the form is still in the invalid state (the validation messages are still displaying).
What I need is a "reset" function of sorts to call after calling Page_ClientValidate('validationGroup'). Does this exist?
What is the point of throwing an exception? It it anyways going to be caught in the Global.asax Application_Error method.
Lets say in the following code we throw an exception.
try {
using (var dc = GetDataContext())
{
// We are doing some data inserts here.
}
catch ( Exception ex)
{
throw ex;
}
My Question: Even if we do not use try catch and throw here, any exception which will be raised here will be caught inside Application_Error method in Global.asax. Then what is the point of try, catch and throw in this case?
I have an asp.net application with separate classes for business logic and database interaction and then of course the UI. I am building a form to add a widget to a widget list table in the database. My UI collects the information and submits it to the business class. I'm going to write the business class to first double check that the widget has a name (I know I should do this in UI with validation, and I will, but this is just in case validation is forgotten) and if it does, go ahead and send the information to the database class. The database class will then attempt to write the info to the correct table using a try catch finally block. Any errors caught here are logged and then rethrown so I can inform the user. So, knowing that my database class may rethrow an error, my business class code will also be written in a try catch finally block.
So at this point I have a number of possible outcomes that I want to inform the user via the UI:
1) Everything was fine and the widget was added.
2) Something happened with the database write and the user should try again later.
3) The user forgot to name the widget.
My question is: should I write my UI in a try catch block and then throw a custom Exception with an Exception.Message in the business layer if anything goes wrong, or just have my business logic return a string that is the message? I'll want to know if the process was successful or not, because I'll want to format the actual message differently, so I'd have to use if...elseif to determine if the message was bad or not.
It seems like throwing a custom Exception in the business layer may be a good way to tell the UI something bad happened. If the UI doesn't catch anything then of course the operation was successful. Then again throwing an exception for missing data seems a bit hefty.
The send method of SMTP is always throwing an exception. The message is : Failure sending mail Here is my code:
MailMessage mm = new MailMessage();
mm.To.Add("Yuvraj.dhot@xxxxx.co.in");
mm.From = new MailAddress("Kumar.Chaudhari@xxxxx.co.in");
mm.Subject = "Ant Subject";
mm.Body = "Body Cha MEssag here ";
SmtpClient ss = new SmtpClient("localhost");
ss.EnableSsl = false;
try
{
**ss.Send(mm);**
Result.Text = "Message Sent";
Result.ForeColor = System.Drawing.Color.Green;
}
catch (SmtpException ex)
{
Result.Text = "Message Not Sent :
" + ex.Message;
Result.ForeColor = System.Drawing.Color.Red;
}
I also tried using
ss.DeliveryMethod = SmtpDeliveryMethod.PickupDirectoryFromIis;
Now it doesn't throw any exception, it executes fine but receiver does not receive any mail in his inbox. How can I fix this? Edit - This is the stack trace im getting.................
I am trying to stop the caching of web pages using the following snippets in the ASP.NET however its not working and showing following error to me,
Response.CacheControl = "no-store";
Response.AddHeader("Pragma", "no-cache");
Response.Expires = -1;
[code]...
I'm testing our OpenNetCF's Padarn Web Server.
In one of their Hands-On-Labs (HOL P101), an exception is being thrown at
private WebServer m_padarnServer = new WebServer();
The exception reads, "Exception in ConfigSectionHandler".
If you have experience with Padarn, have you received this exception before? If so, can you shed some light as to what I may do to debug this error?
I am having this strange case, at first time when the page loades, everything goes fine. But as soon as I click on any link which makes any ajax request, after that, I get this error while trying to read the configuration."System.Configuration.ConfigurationManager.ConnectionStrings' threw an exception of type 'System.Web.HttpException"I am using asp.net mvc 1.0
View 2 RepliesI have a radcombobox in radgrid nested inside FormTemplate:
Code:
<telerik:RadComboBox Skin="WebBlue" Width="250px" Height="150px" runat="server"
ID="TitleCombo" OnDataBound="Title_DataBound"
SelectedValue='<%# Bind("Title") %>' AppendDataBoundItems="true"
OnSelectedIndexChanged="Title_SelectedIndexChanged" AutoPostBack="true" />
then i insert an item to the top of list (at zero index):
Code:
protected void Title_DataBound(object sender, EventArgs e)
{
var item = (RadComboBox)sender;
item.Items.Insert(0, new RadComboBoxItem("Select title...", "0"));
}
It works perfect but, IF the Title field is zero and you Click EDIT LinkButton it throws an exception: Selection out of range Parameter name: value I would say that it's expected as zero index does not exist at the moment when i click edit button. I bind the combo from within RadGrid1_ItemCreated event.
In our application we have to access session objects in business class. We are using HttpContext.Current.Session to get the session value. In some cases it returns the value but mostly its throwing a null reference exception(Object reference not set to an instance of an object). We have the following code Try
If HttpContext.Current.Session("Username") IsNot Nothing then
' Statements to be executed
End If
Catch ex As Exception
'Log to db
End Try
Here HttpContext.Current.Session("Username") is mostly throwing an exception "Object reference not set to an instance of an object" While debugging we found that HttpContext.Current itself is nothing.
I have a static dictionary object which hold some Key and Value pairs in our site.We are getting Indexoutofrange exception some times and we couldn't figureout the problem why it is causing.This error is logged several times in the log file and site went down.Do you have any idea why this is happend?Please provide your advice ASAP as we are facing this issue in live server.
View 6 RepliesAjaxControlToolkit.ToolKitScriptManager.OnInit() throws thread abort exception for every aspx page. I have an asp.net 2.0 Ajax application, where I have set the following properties of ToolScriptManager on my pages.
<ajaxToolkit:ToolkitScriptManager ID="ToolkitScriptManager1" runat="server" EnableScriptGlobalization="true"
EnableScriptLocalization="true" CombineScripts="true" EnablePageMethods="true">
<Scripts>
I have this configuration on all the aspx pages in my application. When I checked the .NET CLR exception Performance counter I figured out a large number of exceptions, mainly one exception per page load is occuring. On running windbg I was noticed that
AjaxControlToolkit.ToolKitScriptManager.OnInit() has the following code block which is getting executed. The OutputCombinedScriptFile() returns true. But since I am setting my controls on DesignTime still designmode is set to false for toolkitscriptmanager.
if (!DesignMode && (null != Context) && OutputCombinedScriptFile(Context))
{
// This was a combined script request that was satisfied; end all processing now
Page.Response.End();
}
I am not sure if this is a reported bug or even a bug with ajax, but this is causing havoc in my load test results as I have around 3 hundred thousand HTTP requests to be handled per day out of which 80% are aspx page requests resulting in a large number of threadafbortexceptions, thus affecting the performance.
A dataview is throwing an out of range exception when a page submit button is clicked. The strange part is if you change the data in the dataview by selecting a different person in the DDL the page works fine. Its only when the page loads and the default person in the DDL is when the DataView throws the exception.
The exception is thrown on the last line when I add DV.Rows(0).Cells(1).Text to the id_num parameter. I know there is a value in the dataview because it is displayed on the page. I can refresh the dataview with another person's information and the code works fine. This really has me confused. Here is a bit of the code behind.
Dim dashDataSource
As
New
SqlDataSource()
dashDataSource.ConnectionString =
ConfigurationManager.ConnectionStrings("SSSConnectionString2").ToString()
dashDataSource.InsertCommandType =
SqlDataSourceCommandType.Text
dashDataSource.InsertCommand =
"INSERT INTO tblAcadReferrals(all columns and parameter info here)"
dashDataSourceInsertParameters.Add("id_num", DV.Rows(0).Cells(1).Text)
I m uploading file to a directory inside my website root directory like this-
[Code]....
I m getting exception-
System.IO.DirectoryNotFoundException: Could not find a part of the path 'C:Documents and SettingsAdminMy DocumentsVisual Studio 2008WebSitesElcomponics Sales-BDsamples�50841010_sd113201031833.pdf'.
Why so?
When i deployed my app on server and accessed it from client system. It is not throwing exception.What is the difference?
Still i want to confirm will it throw the same exception in case i deployed it to server and access it from client.
using vb.net/asp.net 2005
when a user enters a bad email I am doing a check on this and throwing an exception message as follows, this works fine on the test site but for some reason the same code on the live site gives a "internal server error" (http code 500). The code below:
[Code]....
not certain why this is happening, I assume that it's some server or config difference between the test and live sites. has anyone seen this before? For a quick fix i'm registering javascript alert and showing the same text so it works but I would like to figure out why the code above is not working.
I have simple 3 tier web application and have mostly CRUDE functionalities. Recently I required to add new console application to the existing solution in which I call data layer methods for retrieving data from DB but I get an exception "The type initializer for threw an exception."When I debugged I found that the exception is thrown at datalayer on first line of class where I get connectionstring from
web.config, the code is public static readonly string CONNECT_STRING =
ConfigurationManager.ConnectionStrings["DbConnectString"].ConnectionString;
Now if I hardcode the connection string value like public static readonly string CONNECT_STRING = "Data Source=XYZ;uid=sa;password=XXX;initial catalog=ABC;"
it works fine.I don't understand what is the issue here as web application works fine with this datalayer.
I am using Server.Transfer("axpx page", True) in my page.aspx.vb code. This line of code is there in the Try block. The exception "error : canot obtain value" is occurred when this line is executed. This is started all of sudden in the production.I have temporarily fixed this by keeping this line after try - catch block. But I'm not sure why is this problem occurred?
View 8 RepliesI'm developing a asp.net website, i having a problem in one page i using ModalPopupExtender to show a asp:Panel, this panel have a updatePanel with e FormView and nested ListView and ataPager when this was done the Microsoft.Ajax js file throw exception"element is null or non object" at Sys.UI.DomEvent.addHandler.
View 1 RepliesFrom my windows mobile application, i want to connect to the server which resides on my local machine. I want to use HTTPS.
SSL certificates have been implemented and they dont cause any problems.
However, i get an exception at the code line
Stream requestStream = webrequest.GetRequestStream(); ----> webrequest is an object of HttpWebRequest class
The exception message is "Could not establish connection to network." InnerException is null.
This is probably something silly I'm missing but I'm definitely lost. I'm using .NET 4 RC and VS 2010. This is also my first attempt to use UpdateModel in .NET 4, but every time I call it, I get an exception saying Value cannont be null or empty. I've got a simple ViewModel called LogOnModel:
[Code]....
My view uses the new strongly typed helpers in MVC2 to generate a textbox for username and one for the password. When I look at FormCollection in my controller method, I see values for both coming through.
And last but not least, here's are post controller methods:
[Code]....
why UpdateModel would be throwing this exception?
The environment:
Development:
Windows 7 64bit running microsoft visual studio to develop an ASP.NET web application in C#.
Production:
Windows Server 2003 : Microsoft.Net V3.5 : IIS
Application:ASP.NET web application with forms authentication using an Active Directory provider to authenticate against our domain controller. Once authenticated users can select reports which populate a gridview with data from an SQL database.
Background:The web app works flawlessly on development and production. Users can navigate to, authenticate, and access all information on the web app.
Due to sensitive connectionString and active directory provider information in my web.config file we have decided to encrypt those parts.
After researching different methods we chose to do a machine level RSA encryption.
The method which we are following in CMD:
1. cd c:windowsmicrosoft.netframework"version"
2. aspnet_regiis -pc "containerName" //this creates the key container
3. aspnet_regiis -pa "containerName" "NTAUTHORITYNETWORK SERVICE" //this creates an ACL for the NETWORK SERVICE user to be able to access the
container and decrypt the web.config file
4. aspnet_regiis -pef "connectionStrings" "C:inetpubwebsiterootdir" -prov "provider" (where provider is the name of the encryption provider in
web.config) //this uses the encryption provider to encrypt the data then storing the key in the container that we created in step 2.
5. Repeat this process for any other sections of web.config with sensitive info.
I have code that's working beautifully on my development machine,but when deployed to the server is throwing null reference exception.So,I can't step through the code,but I've pinned down the culprit.But now I am puzzled.Here's the code.The question is below.
Dim certs = From p In persons _
Select New Certificate( _
p.Value, _
New CertificateData.Seminar(thisEvent.Seminar.Name, _
[code]...
In the code above persons is a dictionary of custom class,and certs is of IEnumerable type.Now here's the quandary.The first line that sets the label returns False,so certs is not null.But the second line throws an null reference exception.
I'm trying to implement a view tracking web service on my website. I'm using JavaScript because I want to exclude any search bots from my tracked views. The problem is I'm getting a "Unknown web method" error when I try to use jQuery to post to the web service I've created.
$(document).ready(function() {
$.ajax({
type: "POST", [code]...
The error is an ASP .NET error: Unknown web method TrackItemView. Parameter name: methodName.I've done this hundreds of times (seemingly), but I just can't see what I'm missing. I'm sure it's something small...
I have just found the solution. The following function works (remove the else part):
function confirmSubmit() {
if (Page_ClientValidate("Group1")) {
return window.confirm("Are you sure to submit the form?");
}
}
But I am wondering why it doesn't work when I add the else part.
Question:
I want to have a confirm dialog after user fills in all the data in the form. I set onclientclick="return confirmSubmit()" in the submit button.
function confirmSubmit() {
if (Page_ClientValidate("Group1")) {
return window.confirm("Are you sure to submit the form?");
} else {
return false;
}
}
If Page_ClientValidate("Group1") returns false, the dropdownlist doesn't cause postback after I first select the item, and the postback only occurs when I select the dropdownlist second time.