Web Forms :: Symbols After Postback (no Server Error) ?
Aug 5, 2010
I get following code (no server error, no html tags nothing... what I am copy pasting is FULL source code).
[Code]....
This goes on in several lines, no eed to repeat it all. There are no html tags, no server error... nothing. It happens on 3 pages, and only common things they have is a texbox TextMode="Multiline"... on first 2 it helped if that text area was empty or without any strange characters.But on 3rd one, I am simply raising postback from a checkbox to display or hide a corresponding textbox... so no data is being sent nothing..... I am totally baffled with this...
Edit: This happens on 2 IIS server (my local machine and other remote IIS that I use) but Cassini actually gives me a message error!
I have a website that I have release onto our server. I am trying to debug an issue. I start my Site. I open VS2008 I select attach to process and all my break poins are changed to the empty circle withthe error no symbols loaded. I try to go to debug -> Windwos -> modules but I do not see my .dll on the list to load sysmbols for. I have the smae .dll and .pdb on the server as on my local machine. My build mode is Debug. the server is using IIS7. Ihave tried deleting the Windows -> Microsoft.Net -> Framework -> v2.0.50727 -> Temporary ASP.Net Files.
I have a user control in the sidebar(in my web site) for display title and picture of any of news. his usercontrol in all of the pages is observable. when user click on the picture navigate to the page News.aspx for more details. first time i can but in second time when i click on another picture in the News.aspx i get an error like below:
Invalid postback or callback argument. Event validation is enabled using <pages enableEventValidation="true"/> in configuration or <%@ Page EnableEventValidation="true" %> in a page. For security purposes, this feature verifies that arguments to postback or callback events originate from the server control that originally rendered them. If the data is valid and expected, use the ClientScriptManager.RegisterForEventValidation method in order to register the postback or callback data for validation. but when i reload the page the problem is solved my code is:
Was trying to reference this the other day, and I've heard them called several things.They are intrinsically hard to google for. Does this syntax have a proper name?
I have to display math symbols in the label text for checkbox. I have created the symbol in MSWord but dont know how is can do that in the website.Is there anyway I can do that.
i want to display these symbols in a textbox [URL] ok say i want to display a square root symbol I need to parse html command txt1.text=" html command square root symbol is " & √ 'this needs to be parsed
when the user chooses high priority ( may be as a radio button) in front end asp.net form, the database saves the priority state and according to it in the report form, based on the priority it should show a colored symbol : ex: for high priority red color dot.. and for low priority blue dot.. is it possible to implement using grid view?? im going to implement this in mobile...
I have implemented a numeric paging using PagerTempalte.I have setted down page size is 5.I have to implement 2 thigs in gridview PagerTempalte:- #1 I have to show numeric paging with .. symbol like: 12345. If suppose there is a total 20 record record then it will display like :12345. If u clicked on. afert 5 then it has to show next set of 5 records like: ..678910...
#2 I have to show set of records out of total records in pager template like: showing records 1-5 out of 20 So final pager look out should be like this:- 12345... showing records 1-5 out of 20
I recently upgraded to Windows 7 64 on my development machine. I am trying to setup my development environment. I have discovered something strange. When trying to set breakpoints in my ASP.Net application the breakpoints will only work if they are in the root folder. My ASP.Net project has various sub folders and any breakpoints in code that is stored in the sub folders turns yellow when debugging starts and states breakpoints will be missed.
I have deleted the temporary folder in c:windowsmicrosoft.netframework .... etc. etc. etc. I have checked the folder permissions in the root and all sub folders (they are the same). I have deleted and rebuilt the subfolders. I have right clicked VS2008 and said to run as administrator. Nothing seems to fix it. I can debug root level code behind pages but anything stored in a subfolder will not debug.
IS it possible to use mathematical symbols in asp.net application.
I am developing a online assessment web application. In that I need to use mathematical sysmbols as question and the user also should be able to use that symbols.
Is it possible? Is any other third party editor is required?
I have some problems with trying to read values on a postback. The fields, textboxes and dynamiclly created fields doesn't keep their values or I'm doing something wrong when trying to read the values. I get an error message:
System.NullReferenceException was unhandled by user code Message="Object reference not set to an instance of an object." Source="App_Web_m-6qot6q" StackTrace: at Sikt.RäknaVärden() in C:Visual Studio 2005WebSitesKalibreringscertificatSikt.aspx.vb:line 688 at Sikt.Button1_Click(Object sender, EventArgs e) in C:Visual Studio 2005WebSitesKalibreringscertificatSikt.aspx.vb:line 892 at System.Web.UI.WebControls.Button.OnClick(EventArgs e) at System.Web.UI.WebControls.Button.RaisePostBackEvent(String eventArgument) at System.Web.UI.WebControls.Button.System.Web.UI.IPostBackEventHandler.RaisePostBackEvent(String eventArgument) at System.Web.UI.Page.RaisePostBackEvent(IPostBackEventHandler sourceControl, String eventArgument) at System.Web.UI.Page.RaisePostBackEvent(NameValueCollection postData) at System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint)
Also, I get some other errors, such as "Name 'DropDownList1' is not declared" and "Name 'Label1' is not declared" I'm used to classic ASP and this is my first .net 2.0 (vb) application. I'm including some of the code (should be all relevant code)
I have recently upgraded a .net 1 web application to .net 2.0. Everything works fine except some of the administrator pages. These pages load ok but on postback they give the following error:
Type 'WebModules.Accounts.Business.SiteIdentity' in assembly 'test20, Version=1.0.3777.35197, Culture=neutral, PublicKeyToken=null' is not marked as serializable. Stack Trace:
[Code]....
[SerializationException: Type 'WebModules.Accounts.Business.SiteIdentity' in assembly 'test20, Version=1.0.3777.35197, Culture=neutral, PublicKeyToken=null' is not marked as serializable.] Microsoft.VisualStudio.WebHost.Connection.ReadRequestBytes(Int32 maxBytes) +0 Microsoft.VisualStudio.WebHost.Request.ReadEntityBody(Byte[] buffer, Int32 size) +86 System.Web.HttpRequest.GetEntireRawContent() +8766749 System.Web.HttpRequest.GetMultipartContent() +62 System.Web.HttpRequest.FillInFormCollection() +168 System.Web.HttpRequest.get_Form() +68 System.Web.HttpRequest.get_HasForm() +8722023 System.Web.UI.Page.GetCollectionBasedOnMethod(Boolean dontReturnNull) +97 System.Web.UI.Page.DeterminePostBackMode() +63 System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +133
This happens only on my local machine. On the remote server it works fine. The problem also happens before the Page_load method is called (I have tried to debug).This is definitely not a problem of my code; it must be a .Net problem. I have narrowed down the problem of a particular page to the data binding of a datagrid. If I comment it out, the page works (the datagrid contents are not displayed of course). I have found on msdn that one of their security fixes causes this problem to occur in .Net 2.0, but the fix is for Vista. I am running XP so there must be something similar to XP.
Special symbols are a real pain to learn about because you can't Google for them (try doing a Google search for "<%#" and you's get nothing).
I've been a programmer for many years, and I'm trying to get my head around ASP.net, and especially the "special symbols"; what they mean, where to find out more information about them. Because they're impossible to search for, it'd be wonderful if there were special resources in place to help newbies learn about these.
Specifically, I'm looking for detailed instructions on the porpose for, and use, of the following constructs:
<%@ %> <%$ %> <%# %> <%= %>
What is expected in each, what is allowable in each, and what "gotchas" would a newbie have to be careful for when employing each.
For example, I want to do some coding in a <%# %> block, like:
Text="<%# if (Eval("InUse")) {Eval("ProductName")} else {"Not In Use"} %>" -- would this be allowable, and if not, what are reasonable alternatives?
When i tried to edit a record present in a gridview I am getting the following error "Invalid postback or callback argument.Event validation is enabled using <pages Enable event validation="true"/> in configuration or <% @ page EnableEventValidation="true" %> in a page.For security purposes,this feature verifies that arguments to postback or callback events originate from server control that originally render them.If data is valid and expected,use the ClientScriptManager.RegisterForEventValidation method in order to register the postback or callback data for validation."
Required field validator error message is disappeared, after post back event. how to maintain the Required field validator error message on post back also?
I had an issue when I began working on my project, see this thread where I couldn't debug my DLL's. All I had to do to solve it, though it took me forevever to find this, was to hit F5. This doesn't make much sense since they are DLLs and I get a message that I can't run them directly, but whatever, it works. The output is generated as debuggable and I can copy it to my deployment directory and run and hit BPs (I attach to aspnet_wp).
My VS solution is four projects, all are DLLs, and one is called directly by my web application and it calls the others. There are two I am interested in debugging as I am enhancing them.
Maybe I jinxed myself, but I was actually musing recently that if I never figured out why I couldn't debug I'd never have progressed as much as I had in my task. Yesterday I backed up my project to a zip file - source and DLL's - because I was starting on a new piece. The only thing I did to the solution after that was move a module from App_LocalResources to App_Code, then I moved it back. And I added some code. When I tried to set BP's the next time I ran, I got "symbols not loaded". I haven't been able to debug since. I tried restoring the zip file since yesterday I could debug, but I didn't hit BPs there either. I will be researching this the rest of the day, I am sure, but I thought I would ask for specific since maybe I can tell you something that will you to know what I did wrong or you can throw out a question that will trigger to me what I am doing wrong. This is really not how I wanted to be spending a Friday.
I hate VS and this symbolic gibberish that never seem to have same solution (if it once was logic) twice. The screendump below says what it says.
As soon as I F5/Start the web project, the breakpoint going yellow. This ONLY affect the aspx.cs file that being changed. The other aspx.cs files can have breakpoints.
When I do rebuild/build all DLL and PDB files are created just fine. They have same compile time and are in same directory. Module-Windows i VS says the symbols are loaded perfectly. Well, yeah, try bite me!
I can tell, all symbolic is working just fine, until I was about doing changes inside those aspx.cs files (which was some time ago since last time). If I reset back the file, the breakpoint are working. If I try to make changes in another file, the problem appears there.
It simply appears like that the symbolic file generator don't understand changes maded in aspx.cs files..
I'm writing a banking system and my customer wants support both Russian and American numeric standards in decimal digits delimiter. Respectively . and ,.Now only , works properly. Perhaps because of web server's OS format (Russian is set).String like 2000.00 throws a FormatException: Input string was not in a correct format.How to fix that? I have next two ideas:
I just installed sql server 2008 R2 on my computer. I am trying to connect to sql server throught my C# code and everytime I run the C# program,
I get this error "A network-related or instance-specific error occurred while establishing a connection to SQL Server.
The server was not found or was not accessible. Verify that the instance name is correct and that SQL Server is configured to allow remote connections. (provider: Named Pipes Provider, error: 40 - Could not open a connection to SQL Server) "
The connection string that I used in my web.config file is
[Code]....
I am not sure what am I doing wrong, but I followed this article below step by step and still I am getting the same error
Recently, I added a button, a textbox and a jquery code. On click of button the textbox value was been captured in the dropdown. All my code is working fine. But, when I fill the other data and submit the form, It gives me the below error.
Some days ago all of my projects started working crazily - I'm using VS 2010, .NET 4.0, Silverlight 4 SDK, WP7 SDK. The previously compiled code parts can be debugged as they should be, but as soon as I make any change to the observed .cs file all symbols are ignored.
"The breakpoint will not currently be hit. The source code is different from the original version."
However, the compile is successful, moreover the changes in the code can be seen in the debug mode as well (e.g. if i add messagebox.show(...) it works as expected), but I'm unable to debug the project.
This happens to my Silverlight, WPF, WP7 solutions, Web Applications, so everything important. The most annoying thing is that I even reinstalled Visual Studio, the whole .NET Framework 4 Client Profile, but nothing changed.
I don't want to reinstall the whole OS, but this way i'm unable to work:/
I am trying to embed Maths Symbols and Equations in Ajax Editor. or provide some solution to implement maths symbols and equations in my application using rich textbox or some controls/plugins.
