I've written a custom FilterAttribute that implements IExceptionFilter. But this only catches exceptions in the controller actions. What is the best way to handle exceptions in views and html helper methods on a Windows 2008 64-bit Server running IIS 7
View 4 Replieshow to handle the Exception
View 9 RepliesHow can I coerce an exception message that has bubbled from my business layer into an alert box in javascript?BTW, I'm using ASP.NET MVC 1.0.
View 1 RepliesI have a asp.net 2.0 application connecting to a SQL database. Sometimes while browsing through the application, we stumble across the OutOfMemory Exception. I am currently using VS 2005. What is the best way to tackle this exception. Maybe something like a memory profiler...or something like that.
View 4 Repliesi got this exception when i done the code given below..
"Unable to evaluate expression because the code is optimized or a native frame is on top of the call stack."
--code--
try
{
if (retVal == 0)
Response.Redirect("Success.aspx");
}
catch(Exception error)
{
Response.Redirect("errorpage.aspx");
}
finally{
}
from searching in net i found it to be a bug and if its success then we should end response... ie " Response.Redirect("Success.aspx", false); ".it works fine.. is this a good method or there is any other efficient method to handle this exception
I have a textbox that invokes a function on text changed. When the function encounters exception, I want to throw the exception back to the caller. But the problem is the caller is from .aspx file, not .cs file. How can the caller handle the exception?
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I am using Session variable throughout in my application and my timeout is 1 hour. Here I need to catch the exception for session expires in any global way across my application.
View 3 RepliesI have an entity object as model input in my view. Not sure if it's the best approach, but I use the object references to get values from a related object.Let's say I've got a car entity and a manufacturer entity.Here's how it would look in my view
[Code]....
I've get a nullreferenceexception where the car entitity does not have a reference towards manufacturer. I'd like to output a " " if no manufacturer exists.
For example, I am using wenclient.DownloadfileAsync to download a file asynchronously.
In the DownloadFileCompleted event handler, I can check if I have any exception or not by using AsyncCompletedEventArgs.Error property.
If I re-throw this exception, however my executable is stopping running immediately.
I am wondering how to handle this kind of exeception? How to pass this exception back to the
calling thread?
i'm using asp.net 2.0 form with ajax. i have an ihhtpmodule which can thrown an exception at Application_EndRequest step. my problem is that if this happen in an async postback (i mean a postback of an update panel) i can't manage the exception (with manage i mean set a custom error message server-side) becouse it's too late for the error handler of the ScriptManager.
(the alert will print a message as:
Sys.WebForms.PageRequestManagerParserErrorException: The message received from the server could not be parsed. Common causes for this error are when the response is modified by calls to Response.Write(), response filters, HttpModules, or server trace is enabled.
Details: Error parsing near 'MyButt" />
|<html>
<head>)
at the moment my idea is to clear the response in the module and find a way to use the scriptmanager to send the correctly response of an error/exception. it's this possible? or samebody has another option of how to manage this case? note:i can't edit the aspx to manage this client client side with custom javascript
In my code i am running an exe file through a process call. How to handle exception generated by the exe file.
View 1 RepliesI am converting the entered values in textbox into decimal values to saev in sql table. In case user does not enter any value i get a Format exception. How do i handle this..
My code is as below
DMLObj.Add("ItemID", Convert.ToInt32(drpitemname.SelectedValue).ToString());
DMLObj.Add("SupplierName", Convert.ToInt32(drpvendor.SelectedValue).ToString());
DMLObj.Add("Quantity", Convert.ToDecimal(txtqty.Text).ToString());//qty.ToString());
DMLObj.Add("Unit", Convert.ToInt32(drpunit.SelectedValue).ToString());
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My web application some times gives error 'The handle is invalid. (Exception from HRESULT: 0x80070006 (E_HANDLE))' on server. I never comes on production server. Then I just upload the bin folder again on server and it starts running fine. I don't know what is the actual reason behind this.
Some experts suggested Min pool size =1, I applied that but no luck.
I have attached error image.
I need to display an error message in the view when there's an error in rendering the partial view in that View.
How can i handle the exception while rendering partial view and display the error message in the view?
string connectionstring = WebConfigurationManager.ConnectionStrings["AdventureWorks"].ConnectionString;
SqlConnection con = new SqlConnection(connectionstring);
DataSet ds = new DataSet();
DataRelation dr = new DataRelation("show", ds.Tables["HumanResources.Employee"].Columns["EmployeeID"], ds.Tables["HumanResources.EmployeeAddress"].Columns["EmployeeID"],false);
ds.Relations.Add(dr);
foreach (DataRow row1 in ds.Tables["HumanResources.Employee"].Rows)
{
Response.Write("customertitle:" + row1["Title"].ToString());
foreach (DataRow row2 in row1.GetChildRows(dr))
{
Response.Write("customer add" + row2["ModifiedDate"].ToString());
}
}
Object reference not set to an instance of an object. 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.NullReferenceException: Object reference not set to an instance of an object. Source Error:
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Line 31: Line 32: DataSet ds = new DataSet();Line 33: DataRelation dr = new DataRelation("show", ds.Tables["HumanResources.Employee"].Columns["EmployeeID"], ds.Tables["HumanResources.EmployeeAddress"].Columns["EmployeeID"],false);Line 34: //ds.Tables["HumanResources.Employee"].ParentRelations.Add(dr);Line 35: ds.Relations.Add(dr);
Source File: d:databaseDataset showing selected
field of 2 tables.aspx.cs Line: 33
Stack Trace:
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[NullReferenceException: Object reference not set to an instance of an object.] dataset__with_two_tables.Page_Load(Object sender, EventArgs e) in d:databaseDataset showing selected field of 2 tables.aspx.cs:33 System.Web.Util.CalliHelper.EventArgFunctionCaller(IntPtr fp, Object o, Object t, EventArgs e) +15 System.Web.Util.CalliEventHandlerDelegateProxy.Callback(Object sender, EventArgs e) +33 System.Web.UI.Control.OnLoad(EventArgs e) +99 System.Web.UI.Control.LoadRecursive() +47 System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +1436
I want handle exceptions in update panel control with c#.
View 1 RepliesHow do you handle multiple models in a view?. I have 2 tables. Member and MemberAddress
Member class contains Collection of MemberAddresses since a single member may have a billing and shipping address:
public class Member
{
public virtual int MemberId { get; set; }
public virtual string Username { get; set; }
public virtual bool IsActive { get; set; }
public virtual bool IsSame { get; set; }
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Using C#
Table
ID Name
001 Raja
002 Ramu
003 Ravi
004 Sajuee
Detail View Code:
<asp:DetailsView ID="DetailsView1" runat="server" AutoGenerateRows="False" Height="50px" Width="125px" AllowPaging="True" EnableViewState="False">
<Fields>
<asp:BoundField DataField="ProductName" HeaderText="Product" SortExpression="ProductName" /> <asp:BoundField DataField="vehiclename" HeaderText="Category" ReadOnly="True" SortExpression="vehiclename" /> <asp:BoundField DataField="platecode" HeaderText="Supplier" ReadOnly="True" SortExpression="platecode" /> <asp:BoundField DataField="inscom" HeaderText="Qty/Unit" SortExpression="inscom" /> <asp:BoundField DataField="inedate" HeaderText="Price" SortExpression="inedate" /> </Fields>
</asp:DetailsView>
When i run the code, Details View is Displaying First ID, First Name from the table.
Detail View Displaying like this
ID 001
Name Raja
Link: 1 2 3 4
But when i click the link2 it showing errors as "The DetailsView 'DetailsView1' fired event PageIndexChanging which wasn't handled."
Details View is not displaying all the data.
I have a page that I created using the Razor engine to allow updates to a database. One of the fields is a date time field, so I thought I'd try to implement a date picker.
So I was looking at a blog article here , and attepted to follow it through, and implement the suggestions within my code, but I get the following error"Value cannot be null or empty. Parameter name: name"
This is my main View
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I read something about this being a bug in MVC2, but I'm using MVC3 and I was led to believe it had been fixed. Am I missing something here?
After wading through quite a few articles on creating modal forms (using partial views and jquery) I got things working fine for my login....as long as you enter a valid login though!
What I did:
Created a partial view containing my login form.
In my action controller, the get action just return a PartialViewResult, which get dealt with by a bit of jQuery in my master:[Code]....
Like I said this works fine. Now the post action of my login check if it's a valid login, and if so send the user to the passed returnurl or the home page.
However, if the validation fails, I now return the partial view again, which work , but the partial get displayed by itself instead of rendering in the modal form that was opened by jquery.
I'm using MVC, and in the controller, I'm using a linq to objects query which returns an anonymous type:
var results = from ... select new { ... };
I then pass this information to an untyped view:
return View(results);
I try to iterate through the data in the view:
<% foreach (var entry in Model)%>
...
<%: Html.Encode(entry.MyProperty) %>
However, I get a RuntimeBinderException: 'object' does not contain a definition for 'MyProperty'. However, oddly, if I hover above entry with the mouse, it does actually have MyProperty in the popup window, and the value is what I would expect,(apparently, the Visual Studio IDE knows what type it is).I can get around this problem by using a linq query which uses an explicit type and a parameterless constructor of the form:
IQueryable<SearchResult> results = from ... select new SearchResult { ... };
and creating a view model class which encapsulates the SearchResult data, which is then returned to a strongly typed view. However, I don't understand what the problem is with the first method.
The following code listed on the bottom is a dropdown extender contained with a listview insert template. The code works fine however int VS 2008 Debug mode, its throwing the exception:Microsoft JScript runtime error: Sys.InvalidOperationException: Handler was not added through the Sys.UI.DomEvent.addHandler method.If I click ignore or continue, the taret label is properly populated with the appropriate value. Has anybody encountered this and is
<td>
<asp:Label ID="lblTest" style="height:25px;border: solid 1px black" runat="server" Text='<%#Bind("TestCode") %>' Width="90%"></asp:Label>
<asp:DropDownExtender ID="ddExtTestCode" runat="server" TargetControlID="lblTest" DropDownControlID="pnlTestCode"></asp:DropDownExtender>
<asp:Panel ID="pnlTestCode" runat="server" style="display : none; visibility: hidden;">
<asp:LinkButton runat="server" ID="Option1" Text="12345-New York" CommandArgument="12345" OnClick="OnTestCodeSelect"></asp:LinkButton>
<asp:LinkButton runat="server" ID="Option2" Text="45678-New Jersey" CommandArgument="45678" OnClick="OnTestCodeSelect"></asp:LinkButton>
</asp:Panel>
</td>
i have null reference exception in grid view, in the
string s = ((Label)GridView1.FindControl("Label6")).Text;
i tryed this to e.Values["EventId"].ToString()
but still the some why is that?
the full code :
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I'm at the moment trying to learn to create gadgets for EPiServer, and to do that I have to go through MVC, which I'm a bit new to. I'm following this tutorial:[URL]The solution has 2 projects in it just like the tutorial does, the first one is the EPiServer project and the 2nd one is the gadget MVC project called QuickChat.In the EpiServer project I write in the config (just like the tutorial) to point out the gadget:
<publicModules rootPath="~/public/" autoDiscovery="Minimal">
<add name="QuickChat">
<assemblies>
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i need to restore Database.mdf; I create a blank new database exactly the same name as the .mdf file. However, I could not restore the database.
The error message prompted was:
TITLE: Microsoft SQL Server Management Studio Express
An exception occurred while executing a Transact-SQL statement or batch.
(Microsoft.SqlServer.Express.ConnectionInfo)
ADDITIONAL INFORMATION:
Cannot open backup device 'C:inetpubwwwrootTCPSystemApp_DataDatabase.mdf'. Operating system error 32(error not found).
RESTORE HEADERONLY is terminating abnormally. (Microsoft SQL Server, Error: 3201)
click: [URL]
BUTTONS:
OK