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  • ASP.NET AJAX UpdatePanel problem

    - by Velika
    I'll try and be concise: 1) I have a dropdownlist with Autopostback set to TRUE 2) I have an UpdatePanel that contains a Label. 3) When the downdownlist selection is changed, I want to update the label. Problem: Focus is lost on the dropdownlist, forcing the user to click on the dropdownlist to reset focus back to the control. My "solution": In the DropDownList_SelectionChanged event, set focus back to the drop down list: dropdownlist1.focus() Problem: While this works great in IE, Firefox and Chrome change the scroll position such that the control which was assigned focus is positioned at the bottom on the visible portion of the browser window. This is often a very disorientating side effect. How can this be avoided so it works in FF as it does in IE?

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  • ASP.NET: aggregating validators in a user control

    - by orsogufo
    I am developing a web application where I would like to perform a set of validations on a certain field (an account name in the specific case). I need to check that the value is not empty, matches a certain pattern and is not already used. I tried to create a UserControl that aggregates a RequiredFieldValidator, a RegexValidator and a CustomValidator, then I created a ControlToValidate property like this: public partial class AccountNameValidator : System.Web.UI.UserControl { public string ControlToValidate { get { return ViewState["ControlToValidate"] as string; } set { ViewState["ControlToValidate"] = value; AccountNameRequiredFieldValidator.ControlToValidate = value; AccountNameRegexValidator.ControlToValidate = value; AccountNameUniqueValidator.ControlToValidate = value; } } } However, if I insert the control on a page and set ControlToValidate to some control ID, when the page loads I get an error that says Unable to find control id 'AccountName' referenced by the 'ControlToValidate' property of 'AccountNameRequiredFieldValidator', which makes me think that the controls inside my UserControl cannot resolve correctly the controls in the parent page. So, I have two questions: 1) Is it possible to have validator controls inside a UserControl validate a control in the parent page? 2) Is it correct and good practice to "aggregate" multiple validator controls in a UserControl? If not, what is the standard way to proceed?

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  • Session Objects not Updating ASP.NET

    - by davemackey
    I set a session object at one juncture in my code: Session("my_name") = "Dave" Later in my code I give the user a chance to update this object: Session("my_name") = TextBox1.Text I reload my page and display a little hello statement like this: Label1.Text = "Hello" & CStr(Session("my_name")) The result is: "Hello Dave" no matter what I change Session("my_name") too.

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  • Multiple Headers in asp.net

    - by digiguru
    I'm running code that seems to hit the "AppendHeader" twice in the code. Response.Filter = New DeflateStream(Response.Filter, CompressionMode.Compress, True) Response.AppendHeader("Content-encoding", "deflate") ... Response.AppendHeader("Content-encoding", "deflate") I have tried using the following.... Response.Headers("Content-encoding") = "deflate" But it says This operation requires IIS integrated pipeline mode. How do I check for a headers existence, and overwrite it rather than appending it.

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  • c# ASP HttpResponse with redirect causes HTTP 302

    - by acnse
    Hi, I have a flow of web pages A and B. On the web page A, I do a "Response.Redirect("B.aspx"); The page B needs a client certificate. When the redirect is done I see a popup asking for a client certificate. I select the correct certificate, which is retrieved from a smart card, and then I insert the pin. Right after, I see a page saying that the connection was lost, and I receive an HTTP 302. I never reach the page B.aspx. I tried to add the following line "Response.RedirectLocation = "B.aspx"; but with no success too. Any hints? Thanks

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  • Asp.Net : Web service throws "Thread was being aborted"

    - by Master Morality
    I have a web service that I call via ajax that requires the user to be logged in. in each method I want to check if the user is logged in and send a 403 code if they are not, however when I call a Response.End() I get the error "Thread was being aborted". What should I call instead? [WebMethod(true)] public string MyMethod() { if(!userIsLoggedIn) { HttpContext.Current.Response.StatusCode = 403; HttpContext.Current.Response.End(); } /* Do stuff that should not execute unless the user is logged in... */ ... }

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  • ASP.net getting NT user name returns administrator?

    - by JonH
    This doesnt seem to be an issue with windows XP. But I have an end user (my boss!!!) using windows 7 64 bit... In one of our apps we are grabbing the end user user name via: HttpContext.Current.User.Identity.Name.ToString.Substring (HttpContext.Current.User.Identity.Name.ToString.IndexOf("\") + 1).ToLower For me it is returning the correct user name for instance "jhermiz". When my boss tries getting into the app, it thinks he is Administrator??? Does anyone know of any alternative or why this might be happening? The reason this is an issue is because I use that user name to pull other information... This is visual studio 2003.

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  • resize image in asp.net

    - by alina
    I have this code to resize an image but the image doesn't look so good: public Bitmap ProportionallyResizeBitmap(Bitmap src, int maxWidth, int maxHeight) { // original dimensions int w = src.Width; int h = src.Height; // Longest and shortest dimension int longestDimension = (w > h) ? w : h; int shortestDimension = (w < h) ? w : h; // propotionality float factor = ((float)longestDimension) / shortestDimension; // default width is greater than height double newWidth = maxWidth; double newHeight = maxWidth / factor; // if height greater than width recalculate if (w < h) { newWidth = maxHeight / factor; newHeight = maxHeight; } // Create new Bitmap at new dimensions Bitmap result = new Bitmap((int)newWidth, (int)newHeight); using (Graphics g = Graphics.FromImage((System.Drawing.Image)result)) g.DrawImage(src, 0, 0, (int)newWidth, (int)newHeight); return result; }

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  • Using embedded standard HTML forms with ASP.NET

    - by RM
    I have a standard aspx page with which I need to add another standard HTML form into and have it submit to another location (external site), however whenever I press the submit button the page seems to do a post back rather than using the sub-forms action url. A mock up of what the form relationships is below. Note in the real deployment the form will be part of a content area of a master page layout, so the form needs to submit independantly from the master page form. <html xmlns="http://www.w3.org/1999/xhtml" > <head runat="server"> <title>Untitled Page</title> </head> <body> <form id="form1" runat="server"> <div> <form id="subscribe_form" method="post" action="https://someothersite.com" name="em_subscribe_form" > <input type="text" id="field1" name="field1" /> <input id="submitsubform" type="submit" value="Submit" /> </form> </div> </form> </body> </html>

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  • Working with DataBinding and Page_Load in ASP.NET MVP

    - by Joel
    I'm using WebForms MVP to create some simple reporting applications. Most of these applications consist of a few search criteria inputs and a ComponentArt datagrid that I'm populating with data from the database. Most of the markup is in a UserControl, which is in a content page with a master page. My problem is that the control's Page_Load event is firing before the control events that caused the postback in the first place. Basically, the user clicks the search button, and Page_Load is fired BEFORE Search_Click. This is messing with the databinding scheme I've been using. So that's the question: Why is my Page_Load event firing before the event handler, and what can I do about it? I don't THINK this problem is related to WebForms MVP or ComponentArt, but obviously I could be wrong. Thanks.

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  • Starting a Blog using Microsoft.Net technologies

    - by manav inder
    I want to start a blog using Microsoft technologies. My primary reason is to get more in-sync with technologies which are very much in demand. It does not matter how steep is the learning curve as long I am willing to devote all the time in the world. There are lot going on like Microsoft WebAPI, Dot net nuke MVC SPA etc. Let me tell you what i know I have very good experience in developing database driven .net application using winforms and wpf. Average experience in asp.net and asp.net mvc. Good in entity framework, ado.net and wcf rest services. Good in IoC/DI.

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  • Automatically Sizing an ASP.NET Treeview Control

    - by Robert Harvey
    Is there a way to automatically resize a TreeView control so that when it is rendered (or re-rendered, if a node is expanded), the TreeView automatically resizes itself to match the overall height of the tree? The purpose of this is to eliminate the scroll bar that accompanies the TreeView, so that the treeview blends seamlessly into the background.

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  • Use ASP.Net server control code generation from .ashx

    - by Matt Dawdy
    I'm trying to take an existing bunch of code that was previously on a full .aspx page, and do the same stuff in a .ashx handler. The code created an HtmlTable object, added rows and cells to those rows, then added that html table the .aspx's controls collection, then added it to a div that was already on the page. I am trying to keep the code in tact but instead of putting the control into a div, actually generate the html and I'll return that in a big chunk of text that can be called via AJAX client-side. HtmlTable errors out when I try to use the InnerHtml property (says it isn't supported), and when I try RenderControl, after making first a TextWriter and next an HtmlTextWriter object, I get the error that Page cannot be null. Has anyone done this before? Any suggestions?

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  • Sessions in asp.net

    - by Indranil Mutsuddy
    Hello i have a login page so once the user enters the correct details he enters into the home page. Now i want to implement 3 things once he clicks the button 'log out' he must be redirected to a page saying" logged out successfully " n even if clicks the back button in the browser, he should not be able to access. if the user leaves the homepage idle for a specific amount of time say 10minutes and then he tries to navigate after 10 mins a msg should display saying "Your Session has been expired login again" if given the url of homepage he shouldnt be able to access unless logged in. I am not sure about what exactly i need to do and how to do. Plz Help Regards Indranil Mutsuddy

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  • Subfolders in App_GlobalResources (ASP.NET)

    - by frankadelic
    Is it possible to put resource files (.resx) within subfolders inside App_GlobalResources? For example: /App_GlobalResources/someresources/myfile.resx /App_GlobalResources/someresources/myfile.fr-fr.resx /App_GlobalResources/othereresources/otherfile.resx /App_GlobalResources/othereresources/otherfile.fr-fr.resx Or, are all the .resx files placed directly inside App_GlobalResources? If it is possible to use subfolders, how do you programmatically access resources within subfolders?

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  • ASP.NET GridView EditTemplate and find control

    - by Geetha
    In the GridView we are using an edit button. Once the edit button is clicked Controls in the edit template will display in the same row with update button. That row has two dropdownlist controls. Process flow: controls:d1 and d2 d1 is using sqldatasource for item display : working fine. d2 is using codebehind code to load the item based on the selected value in the d1 : Not working How to find the control in the edit template to display item value for d2?

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  • how to open a .pdf file in a panel or iframe using asp.net c#

    - by rahul
    I am trying to open a .pdf file on a button click. I want to open a .pdf file into a panel or some iframe. With the following code i can only open .pdf file in a separate window or in a save as mode. string filepath = Server.MapPath("News.pdf"); FileInfo file = new FileInfo(filepath); if (file.Exists) { Response.ClearContent(); Response.AddHeader("Content-Disposition", "inline; filename=" + file.Name); Response.AddHeader("Content-Length", file.Length.ToString()); Response.ContentType = ReturnExtension(file.Extension.ToLower()); Response.TransmitFile(file.FullName); Response.End(); } how to assign a iframe to the below line Response.AddHeader("Content-Disposition", "inline; filename=" + file.Name);

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  • Web Services: Secure? Asp.net

    - by Jacques
    Hey there, Something I can't wrap my head around is how secure web services are. For example we're writing a desktop application that will interact with data on one of our websites as well as local data. This data is sensitive though and the last thing we want is anybody calling the web services. I've not yet found anything that says web services has some kind of authentication methods and the only security I've seen people talk about is using certificates to encrypt the message. I'm no guru on this and would appreciate anyone's input and perhaps a link to somewhere that will explain this in simple terms. Thanks Jacques

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  • ASP.NET AJAX postback and jQuery

    - by Echilon
    I have a Textbox, a LinkButton and a RadioButtonList inside an UpdatePanel. When the button is clicked, the UpdatePanel shows matching items in the radiobuttonlist. This works fine, but I now need to make the same happen OnKeyDown on the TextBox. I'm trying to cancel all AJAX requests in progress but not having much luck. Firstly, on every keypress the UpdatePanel posts back, so only one letter can be changed at a time. Secondly, the textbox loses focus on postback. I need to show the list as normal, but OnKeyDown as well as when the button is pressed. This is what I have (control IDs shortened) $('#textBoxId').live('keydown', function(e) { if((e.keyCode >= 47 && e.keyCode <= 90) || e.keyCode == 13) { Sys.WebForms.PageRequestManager.getInstance().abortPostBack(); $('#buttonId').click(); $('#textBoxId').focus(); } }); Thanks for any insight.

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  • How to create resource manager in ASP.NET

    - by Bart
    Hello, I would like to create resource manager on my page and use some data stored in my resource files. (default.aspx.resx and default.aspx.en.resx) The code looks like this: System.Resources.ResourceManager myResourceManager = System.Resources.ResourceManager.CreateFileBasedResourceManager("resource", Server.MapPath("App_LocalResources") + Path.DirectorySeparatorChar, null); if (User.Identity.IsAuthenticated) { Welcome.Text = myResourceManager.GetString("LoggedInWelcomeText"); } else { Welcome.Text = myResourceManager.GetString("LoggedOutWelcomeText"); } but when i compile and run it on my local server i get this type of error: Could not find any resources appropriate for the specified culture (or the neutral culture) on disk. baseName: resource locationInfo: fileName: resource.resources 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.Resources.MissingManifestResourceException: Could not find any resources appropriate for the specified culture (or the neutral culture) on disk. baseName: resource locationInfo: fileName: resource.resources Source Error: Line 89: else Line 90: { Line 91: Welcome.Text = myResourceManager.GetString("LoggedOutWelcomeText"); Line 92: } Line 93: can you please assist me with this issue?

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  • How to build a GridView like DataBound Templated Custom ASP.NET Server Control

    - by Deyan
    I am trying to develop a very simple templated custom server control that resembles GridView. Basically, I want the control to be added in the .aspx page like this: <cc:SimpleGrid ID="SimpleGrid1" runat="server"> <TemplatedColumn>ID: <%# Eval("ID") %></ TemplatedColumn> <TemplatedColumn>Name: <%# Eval("Name") %></ TemplatedColumn> <TemplatedColumn>Age: <%# Eval("Age") %></ TemplatedColumn> </cc:SimpleGrid> and when providing the following datasource: DataTable table = new DataTable(); table.Columns.Add("ID", typeof(int)); table.Columns.Add("Name", typeof(string)); table.Columns.Add("Age", typeof(int)); table.Rows.Add(1, "Bob", 35); table.Rows.Add(2, "Sam", 44); table.Rows.Add(3, "Ann", 26); SimpleGrid1.DataSource = table; SimpleGrid1.DataBind(); the result should be a HTML table like this one. ------------------------------- | ID: 1 | Name: Bob | Age: 35 | ------------------------------- | ID: 2 | Name: Sam | Age: 44 | ------------------------------- | ID: 3 | Name: Ann | Age: 26 | ------------------------------- The main problem is that I cannot define the TemplatedColumn. When I tried to do it like this ... private ITemplate _TemplatedColumn; [PersistenceMode(PersistenceMode.InnerProperty)] [TemplateContainer(typeof(TemplatedColumnItem))] [TemplateInstance(TemplateInstance.Multiple)] public ITemplate TemplatedColumn { get { return _TemplatedColumn; } set { _TemplatedColumn = value; } } .. and subsequently instantiate the template in the CreateChildControls I got the following result which is not what I want: ----------- | Age: 35 | ----------- | Age: 44 | ----------- | Age: 26 | ----------- I know that what I want to achieve is pointless and that I can use DataGrid to achieve it, but I am giving this very simple example because if I know how to do this I would be able to develop the control that I need. Thank you.

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