Web Forms :: Sorting And Understanding Web Page Errors?
Sep 14, 2010
your posts and answers are very informative and helpful in my own devolopment and understanding the nature of the beast. Im running vs2010 on a 64bit windows 7 devolopment machine. For days I have been trying to get a Microsoft Reportview to render in a popup. ( i have done this in vs2008 ). I have tried applying the same code from vs2008 to Vs2010, but am comming up with page erros. When loading the default.aspx ( testpage ) I get 'Done but with errors'. If I click on button 1 which shows the popup, I get the report viewer, but it just sits there 'loading'. From advice givenm on this forum, I have used the IE view source code to try and loacate the problem... but to be honest, I dont understand why the page complies ok, but i get errors when it is run, or indeed how to rectify the problem. I have highlighted the two errors.Ie view source code:
Moderators Note: THIS ISSUE IS BIG FOR ME AND EVEN IF POSSIBLE, GET THE REPLY FROM THE DESIGNER OF GRIDVIEW. I have been looking for him for long. I am really fed up with reviewing a good lot of web pages on how we can possibly customize the gridview to enable sorting and paging. So many sites have listed out a lot of information and so many guidances. But the problem is that one works out fine and the other is a burden. I really feel bad about being given the job of customizing this kind of a gridview which has no user friendly approach to it. Also, this control is rendered without the pager links inside the <tfoot> tag. I have tried the Pear Pager in php. It is that good and easy to use and compared to that, the gridview in asp.net is the worst ever control i have ever tried so far.
1. i can use the images to indicate the sorting direction 2. I can have the custom pager like
[code]
<<Previous 1 2 3 .. 7 Next >>.
[/code]
When i click the next when i am viewing the page at 3 , the pager links should change as
[code]
<<Previous 2 3 4 .. 7 Next >>
[/code]
Kindly look into this type of requirement and firstly tell me whether this is possible with the gridview control. I would like this request even to be escalated to the designers of the gridview control also, so that Microsoft comes out with a reply THAT WORKS and not the kind of stuff like surfing through a lot of links and pages and finally wasting a lot of days precious time and still breaking the head with this useless control. I have spent a lot of time in searching for a perfect way. Not writing a code that is non-standard. I am really serious b'cos I have spent weeks in customizing this control. If I dont get a solid reply atleast now, I am going to generate all the output by HTML content by custom coding.
I've searched for about a day and a half and have not been able to find an explanation that I can understand, so please forgive me if this is something you have seen/answered before.
I have a web site that uses the App_Code folder. There are several CS files and classes in that folder. All of this works fine up to this point. However, I wrote an extension method with its own class and file. This fails with the following ambigous reference error (the app is in C#):
Compiler Error Message: CS0121: The call is ambiguous between the following methods or properties: 'GSGeneral.ExtensionMethods.IsNumeric(string)' and ''GSGeneral.ExtensionMethods.IsNumeric(string)'
If I change the extension to a plain static class, there are no problems with it. Based on that, it seems like this is related to it being an extension method.Now I know a work around is to move the file out of the App_Code folder - I've tried it and it works. My question is why does this have issues when all of the other items in the App_Code folder do not.
I know how to alter the web config to redirect to an errors page but what I need to do is have the actual offending error message print to that page. This is a special request for testing reasons, I realize the whole point of a custom error page is to provide a user friendly message when an error occurs but for testing we want to show the user the message so they can copy and paste it into a ticketing system we are using for beta testing feedback.
Should I use the global.asax instead? I am pretty new to vb.net and am not sure how to get the actual error message to display on my custom error page.
Asp.net 3.5 using code behind I am using a repeater control. My datasource appears in code behind. I decided to NOT have my listitems populate from the database. I want the user to select a value, send it to the database via an update statement, and then when the user returns to the page (on pageload), have the user's previous selections appear on the screen. note the following:
When I use textboxes and labels, ALL of my data appears within the table of the repeater control. However, when I replaced one of the text boxes (originally used for testing purposes only) with a dropdownlist, I get the following error message'ddlDDuring' has a SelectedValue which is invalid because it does not exist in the list of items.Parameter name: value My Repeater1_ItemCommandI updates the data within the repeater perfectly. On page load, I want the data from the database to display as the dropdownlist's selected value (or selected item.text). Here is my Asp code
I tried the following code changes on asp page: I changed "SelectedValue" to "Text" and still get the same error message I changed "SelectedValue" to "SelectedItem" and don't get the error message, but dropdown is not populated I set AppendDataBoundItems = true Set first list item value = "" Verified that every field in the table column matched the items in the dropdown list. There were NO null fields in the database.
I just want to understand this error message, as I have exhausted all that I am doing. I also made an attempt to bind the dropdown list, but sine this can only be done within the loop of finding the repeater control, I would either get an error message, or it just would not work.
I have serveral long ASP.Net pages, I use RequiredFieldValidator, RegularExpressionValidator and ValidatorCalloutExtender for validations, Submit buttons are typically at the bottom of the pages. The problem I have: if the errors happen at the top portion of the page when Submit buttons are clicked, the forms do not scroll to the top automatically, the users have to scroll up to see the ValidatorCalloutExtender.
I have a C# web forms ASP.NET 4.0 web application that uses Routing for URLs for some reason custom errors defined in the system.web section of my web.config is entirely ignored and it will fall back the IIS errors.
This gets entirely ignored
[code]....
This would be a minor inconvenience except that by the fact it falls back to IIS native instead of my application it completely circumvents Elmah logging my 404 exceptions correctly.
i m using GridView through n-tier architecture(BAL,DAL etc). Data binding is fine but problem is that there is no page sorting , edit, delete functions are not coming in smart tag.it comes when m using SqlDataSource connection. The many functions will come.
After it is done, I can't click on my calendar control. I was hoping to add somethign that would force a refresh in the script, but nothing I do works.
I have a page that has the layout seen below (Keep in mind this screenshot is from another one of posts) so it has explanations about that issue and not this new post. But I cant create a new image, so it will work to show what I am having issues with. When you arrive to the page you get the first in the image below. The DVR search is already expanded and you can select a name and search or chose a different type of type. I have the gridview below tied to my objectdatasource which works great and was working great until we added the collapsible panels. If I perform a search on DVR name, results are returned in the image view and everythign works. I can then change to List view and that works great.. gridview binds and all functionality works. But the issue now is if I click on the "Date Search" link on the Search Options menu, my panels expand and collapse as expected now that I clicked Date Search, I enter my dates adn click search and results are returned..
Then the issue is that sorting doesn't work. But it does work for the initial search IF performed by the DVR Name. Searching by DVR name sorting and paging works.. but i change to another panel and hit search, the gridview is updated with new results but the sorting doesnt work. I receive this error when I try the date search.. same for All other searches except the first one. Is having the textboxes within a collapsible panel causing my issue? Error message when I click a column to sort on. But like I said, if I just do a search using the first open panel which is the DVR name, sorting works fine. ObjectDataSource 'ObjectDataSource1' could not find a non-generic method 'SelectInfo' that has parameters: sdate, edate. Here is my gridview control code.. [Code]....
I would like to hook up custom error page to my ASP.NET web site.What I would like to do is that. When any error occured transfer the visitor to a custom error page informing about the error,
and at the same time log into a file or send an e-mail to my email account reporting the error.Then an other thing how can I generate error for testing the my Eventhandler method?
im not sure why but my gridview seems to have stopped working in all areas of Editing, Deleting, Sortinging and i cant click the page number to switch between pages.Ive looked up numerous tutorials and on forums and still cant seem to find a solution that works for me. I have the edit delete sorting and paging check boxes selected.
When i click on any of the links nothing happens. not even a refresh.
For example, i am using forms authentication... and i notice there is a system.web and then it closed /system.web and then below configuration there are additional location tags.here is an example, if you ntoice there is an authentication mode=forms with authorization i presume this is the ROOT....... It is also self contained within a system.web .... Below this there are more location= with system.web tags....I have never really understand what i am actually doing.. I have tried checkign the MSDN documentation but still i don't fully understand up....
If you notice with my example.... everything is stored in 1 web.config... i thought the standard waas create a standard web.config and then create another web.config in the directory where i wish to protect it..???
understand what is going on in the code line below:
Table t = (Table)Page.FindControl("Panel1").FindControl("tbl"); I understand Page.FindControl("Panel1").FindControl("tbl"); Why is there a (Table) before the Page.FindControl?
string sqlstring = "SELECT DISTINCT STAFF_ID, SCHOOL_CODE FROM MODULE_TIMETABLE_STAFF WHERE STAFF_ID != '" +userId + "' AND STAFF_ID LIKE '%" + Searcht + "%' ORDER BY STAFF_ID ASC";
can anyone explain this statement for me? especiallythese signs !=,+ +
I have a couple of pages with standard asp.net validation controls such as RequiredFieldValidator etc inside my RadAjaxPanel.As soon as I navigate to another tab in my RadTabStrip the page seems to force validation errors and pretty much "locks" the page even though non of the fields was selected to enter data.Only once all the required fields was entered the page seems to release the "lock" and only then am I able to navigate to another tab / page without even submitting the page.
what might be causing the "lock" and forced validation errors on the page?
Last night i have ran my application which was workin 100%, but in the morning when i run it, it shows the error message in IE Status Bar Done but with some errors on Page due to this, my Menu and TreeView is not appearing well.
I have an error I haven't seen before. One minuter the debugging works fine, the next a App_Web_olwtcupi.4.cs opens in Visual Web Developer (2008) with the following code marked:
[Code]....
I don't know what I did, I've only written code in my aspx and aspx.cs files and I've never seen this before. This is not the first time I use Visual Web Developer, asp.net or c# and I'm truly puzzled..
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?
I want to capture errors on a per-page level. I've added the following code to my code behind page:
public void Page_Error(object sender, EventArgs e) { Response.Write("Unhandled error on the page."); }
I have also ensures that AutoEventWireup="true".
I have some gridviews on this webpage that use a SQLDataSource. I'm hoping to use this error message (which will be better when I get it working, response.write is mostly just to test) to cover up those errors with something more user friendly. Yet when I have an error ("Cannot open database" for instance), Page_Error never fires and I get the ugly yellow screen of death instead.
