C# - Loading Xml Into A Xdoc, And Then Initializing An Object?
Mar 9, 2010public class Template
public string Title {get;set;}
public string Body {get;set;}
xml that is stored in /files/test.xml in a web application (at the root):
[code]...
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Loading Uploaded Xml File Into XmlDocument Object (ASP.Net, MVC, C#)
Jul 27, 2010I'm getting back into coding after a seven year absence. Loving it, but everything is taking me so long!Anyway, I'm trying to upload a file from the browser and then read it into an XmlDocument object on the server. Originally I cracked this by saving the file to disk, reading it into the XmlDocument object and then deleting the file. The only problem was that the delete action was trying to take place before the XmlDocument.Load action had completed
View 2 RepliesC# - Initializing A Value Through A Session Variable?
May 5, 2010I need to Initialize a value in a Javascript by using a c# literal that makes reference to a Session Variable. I am using the following code
<script type="text/javascript" language="javascript" >
var myIndex = <%= !((Session["myIndex"]).Equals(null)||(Session["myIndex"]).Equals("")) ? Session["backgroundIndex"] : "1" %>;
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MVC :: Initializing Items For MultiSelectList?
Jan 7, 2011I have model where exist code for init items for MultiSelectList.This MultiSelectList contain a lot of items and this items reading from external services or database this is doesn't matter. Lets imagine that this reading is slow in any case.
[Code]....
But In Controller when user made Post Back and I also reload this items because InvoiceViewModel not contain items in collection what bind to MultiSelectList he contain only selected items.I have idea save this list in global object.How and where I can store global object in MVC ?
Avoid Loading A LINQ To SQL Object Twice When Editing It On A Website
Apr 9, 2010I know you are all tired of this Linq-to-Sql questions, but I'm barely starting to use it (never used an ORM before) and I've already find some "ugly" things. I'm pretty used to ASP.NET Webforms old school developing, but I want to leave that behind and learn the new stuff (I've just started to read a ASP.NET MVC book and a .NET 3.5/4.0 one). So here's is one thing I didn't like and I couldn't find a good alternative to it.
In most examples of editing a LINQ object I've seen the object is loaded (hitting the db) at first to fill the current values on the form page. Then, the user modify some fields and when the "Save" button is clicked, the object is loaded for second time and then updated. Here's a simplified example of ScottGu NerdDinner site.
//
// GET: /Dinners/Edit/5
[Authorize]
public ActionResult Edit(int id) {
Dinner dinner = dinnerRepository.GetDinner(id);
return View(new DinnerFormViewModel(dinner));
}
//
// POST: /Dinners/Edit/5
[AcceptVerbs(HttpVerbs.Post), Authorize]
public ActionResult Edit(int id, FormCollection collection) {
Dinner dinner = dinnerRepository.GetDinner(id);
UpdateModel(dinner);
dinnerRepository.Save();
return RedirectToAction("Details", new { id=dinner.DinnerID });
}
As you can see the dinner object is loaded two times for every modification. Unless I'm missing something about LINQ to SQL caching the last queried objects or something like that I don't like getting it twice when it should be retrieved only one time, modified and then comitted back to the database. So again, am I really missing something? Or is it really hitting the database twice (in the example above it won't harm, but there could be cases that getting an object or set of objects could be heavy stuff).
Web Forms :: Programmically Initializing A Element?
Mar 31, 2010In VB during page_load I'm trying to initialize:
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Web Forms :: CDO.Message Object Error Loading Type Library / DLL
Jan 8, 2010It has a part where it sends new users their first password in email.. and yes I'm getting that annoying cannot access CDO.Message object error traced back to the "Error loading type library/DLL" message. but I remember that it used to work fine with my old computer I started the development on.
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2. I have the required dll files registered (checked them several times and even reinstalled them a few times)
3. Tried putting only that piece of code in a new application to be able to experiment.. Started commenting out blocks of code until it finally "worked" (I didn't get the error). So it seems like I only get the error if I add a mail field (which is bad since I need those for authentication..)
C# - Lazy Loading Part Of A Middle Layer Business Object?
Feb 14, 2011I want to build a business object such as an employee class, but I know that 80% of the properties will barely get used. So I wanted to know how I can create the object with the important properties in the constructor and lazy load the ones that are barley used when they are needed (if at all).
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How To Declare A C# Web User Control But Stop It From Initializing
Apr 2, 2010I have a C#/ASP.NET .aspx page that declares two controls that each represents the content of one tab. I want a query string argument (e.g., ?tab=1) to determine which of the two controls is activated. My problem is, they both go through the initialization events and populate their child controls, wasting CPU resources and slowing the response time. Is it possible to deactivate them somehow so they don't go through any initialization?
My .aspx page looks like this:
<% if (TabId == 0)
{ %>
<my:usercontroltabone id="ctrl1" runat="server" />
<% }
else if (TabId == 1)
{ %>
<my:usercontroltabtwo id="ctrl2" runat="server" />
<% } %>
I assumed the that <%'s would have meant the control wouldn't actually be declared and so wouldn't initialize, but that isn't so...
Custom Control Properties Not Initializing Properly
Dec 14, 2010The First - LblTextBox:
A label and textbox that have a LabelText field that can be set to change the label text
The Second - LoginCtl:
A login control that has two instances of LblTextBox for user name, password and a submit button
I want to control the tag rendering of these controls for formatting so I am not overriding CreateChildControls() to get the job done.
My issue is that the controls are rendered but none of the OnInit() code in either controls takes hold (blank labels, css styles not applied, etc..).
[Code]....
Web Forms :: Variable Initializing Again And Again On Form Submit?
Jun 30, 2010Initially before page load I declared list string variable
List<string> Emails = new List<string>();
Then I am adding value in for each as
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I checked value are ading properly. Then on btn_click event I am retrieving value as
foreach (string emailid in Emails
{
Response.Write(emailid .ToString());
}
Nothing is displaying, it seems on form submit list string is initializing.
Web Forms :: Loading Value To Parent Webpage / Object Doesn't Support This Method Or Property
Feb 7, 2011I have to load the values to parent page from the popup page. The popup page will be in another website(saparate server).
I used opener.document.getElementById('parentcontrolID'), this is working fine if i run in the local(i created saparate virutual directory for popup page website in my local machine) system the values are loaded properly. but Once i move to the different servers it's not working. getting this javascript error message "Object doesn't support this method or property" in the popup page bottom left corner.
What will be the problem.
Whether we can load the value to parent page from popup page even both are in saparate server?
Initializing Webcam From Website In Client System And Start Video
Jan 21, 2010Problem Description: A person has to enter all his details and take a photo(While Taking his Snap in our website there will be a Image Component and we have to Initilize the Client System(Any Company Webcam)Webcam and below Image Component there will be a button(Take Snap) When he clicks on it , it should take his snap store it. After He fills all his details when he clicks on Save button, all the details along with that image should be Uploaded to the server.
1) How to Check Whether the Client has Installed any Webcam or Not First.
2) If the Client has Installed any Webcam then Initialize that Webcam When he clicks on Take Picture.
3) Stream that Video that is coming from that Webcam Inside our Image Control in Website.
4) After He Clicks on Save Image button that streaming should stop and still image should be saved.
5) Accessing that Image(Later Converting it to Byte Stream) and uploading Image along with his data to Sql Server.
AJAX :: Display Light Box Loading Image On Page When Update Panel Is Loading
Mar 6, 2013I have update panel on the page to avoid postback and placed a dropdownlist control within that update panel. DrodownList is filled with Category names and also it's autopostback set to True.
Now whenever dropdownlist index change's on select, untill page loads complete data it should show mesage as "Loading.... in center and middle of the page and background should become bit transparent". And when page load completely with data then that background and message should get disappear.
Crystal Reports :: How To Loading Gif Image While IE Progress Bar Start Loading
Apr 3, 2010i have developed my asp.net application along wih crystal report .... i need to show loading image on ever client and server side request .... (i.e) like when ever IE progress bar get loading i want to show my gif loading ... after IE progress bar finish its loading, my gif loading image should disappear .
View 2 RepliesWant To Display A Loading Animation While Page Is Loading
Jun 23, 2010I want to display a loading animation while my page is loading, and when loading is complete then obviously hide it.
I am working in ASP.NET using Masterpages, just wondering there is a a simple way of doing this using JQuery?
Windows - .NET Web Page Loading - The First Page Loading Fails With HTTP 404 Error?
Jan 18, 2011We have installed a web site written by others which is compiled with Visual Studio 2008 and hosted in Windows server 2008 R2.
The IIS connection timeout is set to 120 seconds. But for some pages, the first page loading fails with HTTP 404 error but sequential refresh can bring the page up. The same problem happens for some images which fail to load in web pages. We are not very sure it is network related issue or hosting issue.
Web Forms :: Session Ended - But Server Error/ Object Reference Not Set To An Instance Of Object?
Nov 15, 2010In the VS2005 environment, when I test my session to make sure the page redirects to the main page (itself) if the session is null, it works. There is no error.
The function I use for this is:
[code]....
However, when it is in the production environment in IIS 6.0, when the session has timed out, and I then do a postback by doing some slider control, I see the page reload but immediately thereafter, it throws a Server Error exception of : Object reference not set to an instance of object.
Looking at the stack trace, the event occured:
AJAXEnabledWebApplication1._Default.Slider1_TextChanged(Object sender, EventArgs e)
however, why is it that the Slider1_TextChanged event fired even even after during page_load, the page was told to do a response.direct ?? shouldn't the entire page have gone through a full-page refresh life cycle ? why did it continue on to attempt to raise the Slider1_TextChanged event?
DataSource Controls :: Simple Login Form - Object Reference Not Set To An Instance Of An Object?
Apr 20, 2010im tryin to create a login form.
and am receiving the following error:
Object reference not set to an instance of an object
[Code]....
and heres my aspx page:
[Code]....
Stored procedure:
[Code]....
Page.User.Identity.IsAuthenticated Returns Object Reference Not Set To Instance Of Object?
Dec 23, 2010this works fine on my local site but as soon as i upload the site to my live server i get stem.NullReferenceException: Object reference not set to an instance of an object
on the first line of this:
if (!Page.User.Identity.IsAuthenticated)
{
pnlSignIn.Visible = true;
pnlSignOut.Visible = false;
}
Forms Data Controls :: Object Reference Not Set To An Instance Of An Object Repeater Control
Apr 21, 2010can you please help me to brainstorm the possible causes of this error. I've got a paged repeater with localisation bound programitcally to an sqldatasource using a stored proc. I can post code if needs be but it's rather long. I'm looking for typical causes of this error + will make note for future reference!
erver Error in '/WebSite4' Application.
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:
[Code]....
Line 233:Line 234: Repeater1.DataSource = PagedResultsLine 235: Repeater1.DataBind()Line 236: doPaging()Line 237: End Sub
Forms Data Controls :: Get The Value Of The Id Field In Gridview/Object Reference Not Set To An Instance Of An Object
Feb 1, 2010I am trying to get the value of the id field in my gridview but I keep coming up with this error when i do selectedValue or selecteIndex
Exception Details: System.NullReferenceException: Object reference not set to an instance of an object.
How do I get that id? What I am trying to do is when the user select that link it will delete that information from the database. Here's my code:
[Code]....
[Code]....
Web Forms :: Error When Using A BasePage Along With A Master Page/ Object Reference Not Set To An Instance Of An Object
Mar 6, 2010I'm new to programming in ASP.NET, but I'm making my way through Wrox's Beginning ASP.NET 3.5 in C# and VB.NET.
I'm at a section where I'm creating a BasePage. I successfully created a BasePage by creating a new class file in my App_Code folder called BasePage.cs with the following code:
[Code]....
If I run that code everything works out fine. The page loads and all is well. But, if I try to do the same thing to a page that uses my MasterPage.master file, I get the following error:
Object reference not set to an instance of an object.
Description:
An unhandled exception occurred during the execution of the current web request. 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.
Why is that? In the example code from the book (that also uses a MasterPage.master file), everything excutes and runs just fine. But in my test, I get the above error. I've tried comparing my pages to the books included source pages, but I can't find any differences.
Web Forms :: Accessing Control In Usercontrol / Error: Object Reference Not Set To An Instance Of An Object
Apr 19, 2010In the same Code behind file I have:
// This works
Label lblTopNavBarInfo = (Label)Master.FindControl("lblTopNavBarInfo");
lblTopNavBarInfo.Text = "Currently Serving: + FirstName + " " + LastName ;
// This compiles but throws an error in the browser
LinkButton lnkBtnProductsOwned = (LinkButton)LeftNav_CustServ1.FindControl("ProductsOwned"); // The Control is visible
lnkBtnProductsOwned.Enabled = false; // Error: Object reference not set to an instance of an object.
Web Forms :: Unable To Read Web.config File/Object Reference Not Set To An Instance Of An Object
Nov 2, 2010I have a website written in C# that was running fine on one server. We moved it to another server and have a couple issues. I am mainly a VB.NET coder but can do a few things in C#. This is not a project - it is a website and can open it in VS2008 no problem. This is an admin site for the whole website where the user can add customer comments, etc. When logging in, it works fine. I can go to one of the admin pages after logging in and works. If I go to two other different pages, I get this error:
Object reference not set to an instance of an object.
[Code]....
It turns out this is in the main.master page and it is used by the other pages that load fine. The ApplicationTitle variable is set right in the web.config file and like I said, it shows on the other pages.
My question is why would this code work fine for some pages and not two others? All of these admin pages are under a folder called Admin and the web.config file is in the root folder of the website. Its almost like these two pages cannot see the web.config file in the root folder? Why would that be if thats the case?