C# - HttpHandler Fire Only If File Doesn't Exist?
Feb 15, 2010
I'm trying to create a HTTP handler to handle all requests to a folder but I only want it to fire if the files requested don't exist (EG: Request comes in for file X, if X exists I'd like to serve the file, otherwise the handler should deal with it).The files will only be static content, not scripts themselves, which I assume makes it a bit easier but I can't seem to find anything that will do the trick... Anyone have any ideas? I assume it can be done since the IIS7 rewrite module can manage it, but I can't see how...Edit Just to clarify... the handler is the typical case and it is not an error-handling routine but actually delivering appropriate content. I just want the ability to add new files to the folder either as separate things or as overloads to what the handler would deliver.
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Feb 1, 2011
I am using VS 2005.My requirement is
1) on a button click, new web page(New.aspx) should open and this new web page is populating data from an xml file and if this xml file doesnot find then it should redirect to another webpage ErrorPage.aspx.
[Code]....
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Mar 22, 2010
In my project when i click any button or linkbutton, it doesnt fire any event or doesnt postback.
It was working fine but now it hv problem like this.
I think i have changed some settings by mistake.
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Sep 29, 2010
I just got a new desktop computer with Windows 7 Pro as the operating system. I installed Visual Studio 2008 on to this new computer and tried to open a previously existing ASP.NET 3.5 solution that displayed perfectly fine on my previous computer (this previous computer used the Windows XP operating system, IIS6, and IE7 browser). However, in Windows7/IE8, I'm receiving the following error:
Server Error in '/' Application.
Parser Error Description: An error occurred during the parsing of a resource required to service this request. Please review the following specific parse error details and modify your source file appropriately.
Parser Error Message: The file '/MasterPages/MainMaster.master' does not exist.
Source Error: Line 1: <%@ Page Language="C#"
AutoEventWireup="true"
CodeFile="default.aspx.cs"[code]....
when I tell you that the file '/MasterPages/MainMaster.master' file does, in fact, exist. In addition, this file's location is properly referenced in the code (as indicated in Line 1 above), and as I said, was displayed properly by the browser in my previous computer. It might also be helpful to note that I've tried to navigate to other pages in this site, and this browser displays the same message for any and all master pages located in my MasterPages folder. In summary, for some reason the browser cannot see any pages in the MasterPages folder. Can anybody tell me why I'm getting this error message when the folder and file is exactly where default.aspx says it is?
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Mar 2, 2010
I have an MVC2 application, and HttpHandler Library. The library, to simplify, serves an image. The problem is that if I invoke this handler from the root page ( http://whatever/ ), everything works fine. If, however, I change the Global.asax, so the same page now has the address of http://whatever/controller/action - it doesn't work (ALT text comes out instead of image).I didn't write the handler library, but I have the code; so I put a breakpoint in ProcessRequest function of IHttpHandler implementation. For good situation the breakpoint gets triggered, but for bad case it isn't. So, I assume that the handler isn't invoked for non-root pages.
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Mar 15, 2010
If we use an aspx page with a Caching Profile, the server caches images that are loaded with the aspx page. So if ten clients load the same image through the aspx page (same url), for one client the image is gotten out of the db, for the nine others it is cached.When we use a HttpHandler, this doesn't happen. The image is always fetched from the database. We have tried all different settings without any success. (we have checked this link and have not been able to cache on server side).
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Jul 16, 2010
I get this error: Description: An error occurred during the compilation of a resource required to service this request. review the following specific error details and modify your source code appropriately. Compiler Error Message: CS0234: The type or namespace name 'Xml' does not exist in the namespace 'System' (are you missing an assembly reference?) Source Error:
[Code]....
Line 15: using System.Web.Services.Protocols;
Line 16: using System.ComponentModel;
Line 17: using System.Xml.Serialization;
Line 18:
Line 19:
Source File: c:WindowsMicrosoft.NETFrameworkv4.0.30319Temporary ASP.NET Files
oot4db438488b8d9090App_WebReferences.j5ljvr6f.0.cs
Line: 17
I have this in my web.config:
<compilation debug="true" strict="false" explicit="true" ><!--targetFramework="4.0"-->
<assemblies>
<clear />
<add assembly="System.Web, Version=4.0.0.0, Culture=neutral, PublicKeyToken=B03F5F7F11D50A3A"/>
<add assembly="System.Web.Services, Version=4.0.0.0, Culture=neutral, PublicKeyToken=B03F5F7F11D50A3A"/>
<add assembly="System.Design, Version=4.0.0.0, Culture=neutral, PublicKeyToken=B03F5F7F11D50A3A"/>
<add assembly="System.Windows.Forms, Version=4.0.0.0, Culture=neutral, PublicKeyToken=B77A5C561934E089"/>
<add assembly="System.Web.Extensions, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35"/>
<add assembly="System.Web.Extensions.Design, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35"/>
</assemblies>
</compilation>
<pages controlRenderingCompatibilityVersion="3.5" clientIDMode="AutoID">
[Code....]
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Feb 9, 2010
my application in vs2005 / 2.0 framework , right now i change it with VSD08 /3.5 framework according when i change it open it with 08 at first time it get ask me ( you want to convert the application framework 2.0 to 3.5 ) i said yes , after that i was trying to run the application it get works on that machine means on ( locahost) but not able to access that on netowork its shows an error:
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May 11, 2010
i have uploaded all of my release mode published dll's and aspx to the server, but when i access the site from local machine its giving error as
Parser Error
Description:
An error occurred during the parsing of a resource required to service this request. review the following specific parse error details and modify your source file appropriately.
Parser Error Message: The file '/ProjectName/Index.aspx.cs' does not exist.
Source Error:
[Code]....
may i know how to solve this problem?
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Dec 30, 2010
I am creating a project in which i want to display my web page in full screen & Does not allow the end user to ext the full screen until he/she press the button. I google/bing but i dint get any help full material. Even i use this code
[Code]....
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Aug 25, 2010
I am having a dropdown list in the aspx page as
<asp:DropDownList ID="ddlItems" runat="server"></asp:DropDownList>
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Dec 31, 2010
I have Attendance Table for students and im using stored procedure for add attendance:
1 means attend
0 means absent
DID STDNo L1 L2 L3 L4 L5 L6 L7 Date
1 2334 1 1 1 1 1 1 0 1 12/30/2010
date datatype is nvarchar(50)
stored procedure :
ALTER procedure [dbo].[AddDailyAttendance]
(
@STDNo nvarchar(6),
@L1 int,
@L2 int,
@L3 int,
@L4 int,
@L5 int,
@L6 int,
@L7 int,
@Date nvarchar(50),
)
as
insert into Att_AddDaily (STDNo,L1,L2,L3,L4,L5,L6,L7,Date)values(@STDNo,@L1,@L2,@L3,@L4,@L5,@L6,@L7,@Date)
when i add attendance for example : to student number 2334 at the date 12/30/2010 to check if it's exist in table and if it's exists doesnt add it
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Dec 16, 2010
I have Called a Function " GetPhotos" from Designer Page (source). Getphotos() is in Code-behind Page. It runs well When i only Build the Application. But when i Publish the same application using "fixedName and single page Assemblies" option Enable, it Returns an Error
Compiler Error Message: CS0103: The name 'GetPhotos' does not exist in the current context.
what should i do? Code in Design page:
<asp:Content ID="Content1" ContentPlaceHolderID="ContentPlaceHolder1" Runat="Server">
<asp:Panel ID="pn1" runat="server" GroupingText="Facility's">
<table width="100%">
<tr>
<td style="text-align: left">
<asp:Label ID="Label2" runat="server" Height="100%"
style="font-size: 21pt; font-weight: 700; color: #996633" Width="100%"></asp:Label>
</td>
</tr>
<tr><td style="text-align: left"><asp:Label ID="Label3" runat="server"
style="text-align: justify"></asp:Label></td></tr>
<tr>
<td>
<asp:GridView ID="GridView1" runat="server" AllowPaging="True"
BackColor="White" BorderColor="#336666" BorderStyle="Double" BorderWidth="3px"
CellPadding="4" PageSize="15" Width="100%"
onselectedindexchanged="GridView1_SelectedIndexChanged">
<RowStyle BackColor="White" ForeColor="#333333" />
<FooterStyle BackColor="White" ForeColor="#333333" />
<PagerStyle BackColor="#336666" ForeColor="White" HorizontalAlign="Center" />
<SelectedRowStyle BackColor="#339966" Font-Bold="True" ForeColor="White" />
<HeaderStyle BackColor="#336666" Font-Bold="True" ForeColor="White" />
</asp:GridView>
<%
GetPhotos(Label2.Text);
%>
</td>
</tr>
</table>
</asp:Panel>
</asp:Content>
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Feb 2, 2011
I currently have this controller function:
public ViewResult Edit(int id)
{
//get user from id
var user = _adminRepository.GetUser(id);
return View(user);
}
This currently gives me an error on my view page if I attempt to edit an item with an id of 100, when there is no user with an id of 100 in the database. What's the best practice for handling this? Send them to a Create page, or show a friendly error message? Should that redirect functionality be within the controller function?
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Oct 27, 2010
I have a table "assignments" with records that are assigned to multiple "users" by the "department" they belong to. Each user then can have it's own "status" for each assignment.
When the user logs-in i need to show all his assignments and the status.(but status record doesn't exist yet)
When a new assignment is created I don't want to have to create a new record relating the assignment to the user. I want the relationship to be by the department the user belongs to and the department the assignment was assigned to.
Only thing i can think of is when the user logs in to load the assignments that belong to the user's department then look thru all the records. For each record loop thru the status table. If a record exist show the the status. if it doesn't then make default value and when the users clicks to view the assignment a new status record will be added.
Only thing i don't like is looping thru the status records while looping thru all the assignments.
How else can I do it? I don't see how could join the assignments table and the status table if the status record doesn't exist yet.
tables:
[ASSIGNMENTS]
assignmentID
departmentID
assignment
[DEPARTMENT]
departmentID
department
[USERS]
userID
departmentID
user
[STATUS]
userID
assignemntID
status
BTW, I'm using Linq-to-SQL
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Mar 24, 2011
I was wondering if there was any way to ignore content if a contentplaceholder doesn't exist?
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Sep 2, 2010
I am inserting a record and want to set the value for a foreign key but I am getting an error - I initally thought that it would insert it if it didn't exist but I must be wrong and want to confirm that I need to check all values and make a record for them if they don't exist... here's what I am trying to do - does his make sense?
var newAllPart = new Part();
newAllPart.PartNumber = partNumber;
newAllPart.Manufacturer.ManufacturerName = partManufacturer; // error here if the Manufacturer doesn't exists already
newAllPart.PartType.PartTypeName = partType;
newAllPart.Category.CategoryName = partCategory;
newAllPart.DateCreated = DateTime.Now;
newAllPart.UserCreated = userCreated;
newAllPart.Package.PackageName = partPackage;
newAllPart.Statuse.StatusName = partStatus;
localDB.Parts.InsertOnSubmit(newAllPart);
localDB.SubmitChanges();
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Jan 10, 2011
I am trying to locally install a CMS for my website. During this installation process, it shows me an error "User or role does not exist in the database. Screenshot of the error: Here's the screenshot of the login properties from Management Studio (Properties of the user Sarin)
Screenshot shwoing the database user properties: [URL] User mapping: Screenshot: [URL]
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Aug 26, 2010
i have a Class named Helper.cs inside my App_Code folder. And i get this error:
Compilation Error
Description: An error occurred during the compilation of a resource required to service this request. Please review the following specific error details and modify your source code appropriately.
Compiler Error Message: CS0103: The name 'Helper' does not exist in the current context
Source Error:
[Code]....
And i know my compiler recognizes the Helper class because the 'Helper' is colored in cyan... means is known by the compiler. What am i doing wrong?
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Mar 9, 2010
I have an ASPX Page:
<%@ Page Language="C#" MasterPageFile="~/site.Master" AutoEventWireup="true" CodeBehind="Default.aspx.cs" Inherits="myProject.Presentation.Web.Default" src="Default.aspx.cs" %>
<%@ MasterType VirtualPath="~/site.Master" %>
...
<asp:Repeater ID="rGrid" runat="server">
<ItemTemplate>
...
</ItemTemplate>
</asp:Repeater>
With this Master:
<%@ Master Language="C#" AutoEventWireup="true" Codebehind="site.master.cs" Inherits="myProject.Presentation.Web.master" src="~/site.Master.cs" %>
When I try to access one of the members on the page:
namespace myProject.Presentation.Web {
public partial class Default : System.Web.UI.Page
...
rGrid.DataSource = myProject.Business.User.GetReports(UserId, true);
Iget this YSOD on that line:
CS0103: The name 'rGrid' does not exist in the current context Yet Intellisense and Object Exporer say it's valid. Why is that?
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Dec 27, 2010
I have a PHP website and I am looking to convert it into ASP.NET. So I am learning ASP.NET and I needed a way to upload multiple files to the server. So I ran across this tutorial: [URL] I did everything correct, but I get this error:
Compiler Error Message: CS0103: The name 'Path' does not exist in the current context
Source Error:
[Code]....
Source File: c:UsersUser1DesktopUweaveLigues Hockey SimulesViewsAdminFormIndex.aspx
Line: 18
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Jan 24, 2011
I transferred my project into another computer from Win XP to Win 7. After installation, I realized that something in my App_code folder, called like mydata.web.utils namespace, has a class called like WebConstants (which is public class and public functions).
now in areas like global.asax, it tells me "WebConstants does not exist in this context"
Even though I have:
<%@ Import Namespace="mydata.web.utils" %>
And webconstants.cs has:
namespace mydata.web.utils
{
public class WebConstants
{
public static String APPLICATION_VERSION = "version";
........
}
}
No syntax errors or compiler errors in webconstants.cs
But everywhere else, it's saying "what is 'web'"??
If I rename the namespace from "web.utils" to just "web", still same problem. If I rename "web.utils" to "wez"--then the compiler errors go away.
But I cannot do this, because then I'd have to change it all over the project, which is a ton of work.
I also notice in the "build output" that there is no App_code being compiled in the project. Maybe because it's an ASP.net folder, I'm not certain. Is that normal?
How is it that the same source code, same visual studio, produces errors in win7 and no errors in the winXP computer?
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Jan 29, 2011
im getting this error CS0103: The name 'ProjectName does not exist in the current context, im getting this error on Global.asax. i tried to clean and rebuild but its not working, please tell me how to resolve it?
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Sep 16, 2010
I just switched from Classic Mode to Integrated Mode and now HttpContext doesn't seem to exist in my ASP.NET application. I can't even add a Watch to HttpContext nor to HttpContext.Current.
I'm using FluorineFX where in the Web.config a HttpModule is defined. Apparently, in IIS7 Integrated Mode, these HttpModules need to be added to the Modules section in System.WebServer. I have done this, but now I'm having this HttpContext problem...
Code is in a simple service class being called by Flex (amf).
if (HttpContext.Current.User.Identity != null)
{
...
Web.Config (I don't know how to display this properly in Stack...):
<?xml version="1.0" encoding="utf-8" ?>
[Code]....
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Dec 13, 2010
I am working on a contact form. i am getting an error below, here is my code:
[Code]....
And here is the error i'm getting:
Compilation Error
Description: An error occurred during the compilation of a resource required to service this request. Please review the following specific error details and modify your source code appropriately. Compiler Error Message: CS0103: The name 'txtEmail' does not exist in the current contextSource
Error:
[Code]....
Line 20: try
Line 21: {
Line 22: MailAddress fromAddress = new MailAddress(txtEmail.Text, txtFirstName.Text + " " + txtLastName.Text);
Line 23:
Line 24: // You can specify the host name or ipaddress of your server
Source File: c:HostingSpacesartofmouldingartofmoulding.comwwwrootcontact.aspx.cs
Line: 22
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