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  • Why is the ASP.NET Repeater.Items collection empty, when controls are on the screen?

    - by Ryan
    I have an ASP page with the following repeater: <asp:Repeater runat="server" ID="RegionRepeater" DataSourceID="SqlDataSourceRegions" EnableViewState="true"> <ItemTemplate> <tr> <td valign="top"> <b><%#Eval("description")%></b> <asp:HiddenField runat="server" ID="RegionID" Value='<%#Eval("region_id")%>'/> </td> <td> <asp:FileUpload ID="FileUpload" runat="server" Width="368px" /> </td> </tr> </ItemTemplate> </asp:Repeater> (The repeater is inside a Wizard, inside a content pane). The code behind is connected to the protected void Wizard1_NextButtonClick(object sender, WizardNavigationEventArgs e) event. There are two items on the screen (two rows inside the table). However, when the code tries to read those items, the Items collection is empty! foreach(RepeaterItem region in RegionRepeater.Items) { // Never runs - the RegionRepeater.Items.Count = 0 FileUpload fileUpload = (FileUpload) region.FindControl("FileUpload"); String regionID = ((HiddenField)region.FindControl("RegionID")).Value; ... Why is the collection empty, when there are controls drawn on the screen? Thanks a lot for any help; this is starting to drive me nuts. (BTW: I tried adding/removing the EnableViewState="true" tag)

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  • ASP.NET SqlDataReader throwing error: Invalid attempt to call Read when reader is closed.

    - by Bugget
    This one has me stumped. Here are the relative bits of code: public AgencyDetails(Guid AgencyId) { try { evgStoredProcedure Procedure = new evgStoredProcedure(); Hashtable commandParameters = new Hashtable(); commandParameters.Add("@AgencyId", AgencyId); SqlDataReader AppReader = Procedure.ExecuteReaderProcedure("evg_getAgencyDetails", commandParameters); commandParameters.Clear(); //The following line is where the error is thrown. Errormessage: Invalid attempt to call Read when reader is closed. while (AppReader.Read()) { AgencyName = AppReader.GetOrdinal("AgencyName").ToString(); AgencyAddress = AppReader.GetOrdinal("AgencyAddress").ToString(); AgencyCity = AppReader.GetOrdinal("AgencyCity").ToString(); AgencyState = AppReader.GetOrdinal("AgencyState").ToString(); AgencyZip = AppReader.GetOrdinal("AgencyZip").ToString(); AgencyPhone = AppReader.GetOrdinal("AgencyPhone").ToString(); AgencyFax = AppReader.GetOrdinal("AgencyFax").ToString(); } AppReader.Close(); AppReader.Dispose(); } catch (Exception ex) { throw new Exception("AgencyDetails Constructor: " + ex.Message.ToString()); } } And the implementation of ExecuteReaderProcedure: public SqlDataReader ExecuteReaderProcedure(string ProcedureName, Hashtable Parameters) { SqlDataReader returnReader; using (SqlConnection conn = new SqlConnection(connectionString)) { try { SqlCommand cmd = new SqlCommand(ProcedureName, conn); SqlParameter param = new SqlParameter(); cmd.CommandType = System.Data.CommandType.StoredProcedure; foreach (DictionaryEntry keyValue in Parameters) { cmd.Parameters.AddWithValue(keyValue.Key.ToString(), keyValue.Value); } conn.Open(); returnReader = cmd.ExecuteReader(CommandBehavior.CloseConnection); } catch (SqlException e) { throw new Exception(e.Message.ToString()); } } return returnReader; } The connection string is working as other stored procedures in the same class run fine. The only problem seems to be when returning SqlDataReaders from this method! They throw the error message in the title. Any ideas are greatly appreciated! Thanks in advance!

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  • Run a script inside a content page. ASP.NET

    - by Roger Filipe
    Hello, I have a masterpage and content page. And I'm trying to run a script that needs to be executed on the page loading. As I am using a master page do not have access to the field My doubt is how to run the script within the content page? And where the script has to be? the head of the master page or inside the content page?

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  • I'm having trouble spacing a menu control in an ASP.NET page. Is my solution the correct way to do t

    - by pkiyan
    Hey, I added a menu control to my page that is displayed vertically. I couldn't find a way to add spaces (I'd like about 5px.) between the menu items, so I just did something similar to this: <asp:Menu ID="Menu1" runat="server" BackColor="ActiveBorder"> <Items> <asp:MenuItem NavigateUrl="~/About.aspx" Text="One" /> </Items> </asp:Menu> <p></p> <asp:Menu ID="Menu2" runat="server" BackColor="ActiveBorder"> <Items> <asp:MenuItem NavigateUrl="~/Default.aspx" Text="Two" /> </Items> </asp:Menu> I just created multiple menu controls with a single menu item control in them, and placed a break between the menu controls. This seems very wrong to me, but I could not figure out another way. Also, this is a bit off subject, but is it okay to use empty paragraph tags as line breaks?(sometimes a br tag is too much) Thanks..

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  • ADO.NET: Faster way to check if the database server is accessible?

    - by lotana
    At the moment I am using this code to check if the database is accessible: public bool IsDatabaseOnline(string con) { bool isConnected = false; SQLConnection connect = null; try { connect = new SQLConnection(con); connect.Open(); isConnected = true; } catch (Exception e) { isConnected = false; } finally { if (connect != null) connect.Close(); } return isConnected; } While this code works fine, there is a disadvantage. If the server is not online it spends about 4 full seconds trying to open the connection before deciding that it is not available. Is there a way to test the connection without trying to actually opening it and waiting for the timeout? Something like a database-equivalent of ping?

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  • Can I use a class as an object in .NET to create instances of that class?

    - by Troy
    I'm writing a fairly uncomplicated program which can "connect" to several different types of data sources including text files and various databases. I've decided to implement each of these connection types as a class inherited from an interface I called iConnection. So, for example, I have TextConnection, MySQLConnection, &c... as classes. In another static class I've got a dictionary with human-readable names for these connections as keys. For the value of each dictionary entry, I want the class itself. That way, I can do things like: newConnection = new dict[connectionTypeString](); Is there a way to do something like this? I'm fairly new to C# so I'd appreciate any help.

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  • [ASP.NET] A CustomValidator doesn't need to have it's ControlToValidate property set, so...

    - by pkiyan
    Hi: I've just finished reading up on the CustomValidator control and I have a question. In the book I'm reading, it says that a CustomValidator doesn't need to have it's ControlToValidate property set and it gives a few examples of that usage. But in one example where ControlToValidate isn't used, the OnServerValidate function has a timer (5 seconds) that you need to beat by entering your 'answer' into a textbox. If it takes you longer than 5 seconds, the CustomValidator's error message pops up next to the textbox (it's like a timed question/answer game) . How did the CustomValidator know to place the message next to the textbox (there's no association between the two, that I know of)? I wanted to test this, so I put a couple more textboxes on the page and the error message always showed up next to the last textbox I placed on the page. Thanks.

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  • ASP.NET MVC - Do stylesheets have to go in the Site.Master file?

    - by Darcy
    Hi all, I noticed that I cannot add stylesheets on any page. They must be added to the master page. I already have about 15 stylesheets in the master view, which seems like overkill, since only some of the pages use a certain stylesheet. I imagine I could reference the file via javascript (although, I can't think of how off the top of my head), but it would be really nice to not have to use any.

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  • Populating dropdownlist in asp.net mvc doesn't seem to work for me...

    - by Pandiya Chendur
    I use a dropdownlist in one of my create.aspx but it some how doesnt seem to work... public IEnumerable<Materials> FindAllMeasurements() { var mesurements = from mt in db.MeasurementTypes select new Materials() { Id= Convert.ToInt64(mt.Id), Mes_Name= mt.Name }; return mesurements; } and my controller, public ActionResult Create() { var mesurementTypes = consRepository.FindAllMeasurements().AsEnumerable(); ViewData["MeasurementType"] = new SelectList(mesurementTypes, "Id", "Mes_Name"); return View(); } and my create.aspx has this, <p> <label for="MeasurementTypeId">MeasurementType:</label> <%= Html.DropDownList("MeasurementType", ViewData["MeasurementType"])%> <%= Html.ValidationMessage("MeasurementTypeId", "*") %> </p> When i execute this i got these errors, System.Web.Mvc.HtmlHelper<CrMVC.Models.Material>' does not contain a definition for 'DropDownList' and the best extension method overload 'System.Web.Mvc.Html.SelectExtensions.DropDownList(System.Web.Mvc.HtmlHelper, string, System.Collections.Generic.IEnumerable<System.Web.Mvc.SelectListItem>)' has some invalid arguments 2.cannot convert from 'object' to 'System.Collections.Generic.IEnumerable<System.Web.Mvc.SelectListItem>

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  • Control for ASP.NET that allows Global Address List (GAL) integration.

    - by jamone
    I know I can use System.DirectoryServices to roll my own GAL Name/email selector control and I've seen plenty of people explaining the basics of how to do that, but surly someone knows of one that I can download from somewhere. It just seems like a waste to have to remake it when so many people need it. Something remotely similar to Outlooks GAL Select Names dialog. It could be simpler.

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  • Use Struct as a Ptr/class? Need a fix .NET

    - by acidzombie24
    I wrote a bunch of code and i would like to fix it the fastest way possible. I'll describe my problem in a easier way. I have apples and oranges, they are both Point and in the list apples, oranges. I create a PictureBox and draw the apple/oranges on screen and move them around and update the Point via Tag. The problem now is since its a struct the tag is a copy so the original elements in the list are not update. So, how do i update them? I consider using Point? But those seem to be readonly. So the only solution i can think of is Clear the list, iterate through all the controls then check the picturebox property to check if the image is a apple or orange then add it to a list I really only thought of this solution typing this question, but my main question is, is there a better way? Is there some List<Ptr<Point>> class i can use so when i update the apples or oranges through the tag the element in the list will update as a class would?

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  • ASP.Net MVC: Showing the same data using different layouts...

    - by vdh_ant
    Hi guys I'm wanting to create a page that allows the users to select how they would like to view their data - i.e. summary (which supports grouping), grid (which supports grouping), table (which supports grouping), map, time line, xml, json etc. Now each layout would probably have different use a different view model, which inherit from a common base class/view model. The reason being that each layout needs the object structure that it deals with to be different (some need hierarchical others a flatter structure). Each layout would call the same repository method and each layout would support the same functionality, i.e. searching and filtering (hence these controls would be shared between layouts). The main exception to this would be sorting which only grid and table views would need to support. Now my question is given this what do people think is the best approach. Using DisplayFor to handle the rendering of the different types? Also how do I work this with the actions... I would imagine that I would use the one action, and pass in the layout types, but then how does this support the grouping required for the summary, grid and table views. Do i treat each grouping as just a layout type Also how would this work from a URL point of view - what do people think is the template to support this layout functionality Cheers Anthony

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  • what causes the .NET SerialPort class DataReceived event to fire?

    - by Klay
    I understand from the MSDN docs that the event DataReceived will not necessarily fire once per byte. But does anyone know what exactly is the mechanism that causes the event to fire? Does the receipt of each byte restart a timer that has to reach, say 10 ms between bytes, before the event fires? I ask because I'm trying to write an app that reads XML data coming in from a serial port. Because my laptop has no serial ports, I use a virtual serial port emulator. (I know, I know--I can't do anything about it ATM). When I pass data through the emulated port to my app, the event fires once for each XML record (about 1500 bytes). Perfect. But when a colleague at another office tries it with two computers connected by an actual cable, the DataReceived event fires repeatedly, after every 10 or so bytes of XML, which totally throws off the app.

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  • dynamic grid style form that lets you update multiple rows in a single post in asp.net mvc

    - by Charlie Bear
    I'm starting out with MVC but not sure it's the best option. I need to create a form that is based upon a collection. Eg it might look like this: product Price Item 1 [textbox] Item 2 [textbox] [submit button] where "item" is pulled from the database and textbox allows users to update the price. essentially this is a type of datagrid but i don't want webforms style update each row one at a time i need to update the entire set of text boxes in one post. Ideally I don't want a javascript based solution as it has to work without javascript. Is this possible in MVC or should I stick to webforms (where I could do this in a repeater by iterating through he repeater items on postback)

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  • ASP.NET: Why is my JavaScript object set to null?

    - by Giffyguy
    I have a <script> that contains this line: var tbl = document.getElementById("<%= this.tblSelection.ClientID %>"); ... but tbl always ends up being set to null. The table is declared like this: <asp:Table ID="tblSelection" runat="server" CellPadding="2" CellSpacing="0" cols="1" style="position: absolute; top: 0%; right: 0%"> Both the script and the table are in the same master page file. What could be causing this? EDIT: I should mention that this script is executed on onload

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  • Cross Theaded Calls - Many controls Heavy GUI Application after .net 1.1 2.0 upgrade- best way ??

    - by keepsmilinyaar
    I have recently upgraded a .net1.1 solution to .net2.0. AS this is a very heavy GUI appilcation with loads of controls and many multithreaded operations that update the GUI. While these operations worked seamlessly in .net1.1 it is throwing up Cross Threaded Illegal operations after the upgrade. Considering the fact that tehre are numerous grids, buttons and status labels that need to be updated via these multi threaded operations, I decided to code for checking the InvokeRequired solution, however doing that for every control would probably not be the best way to go about it. I was wondering if you could suggest a better way of how I can go about it or propose any OOPS based class structure that I could code around to make the code look better. Please do let me know if my question is unclear. Thanks in advance

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  • How to save search, choose a recent search and then populate the form using jQuery and/or asp.net

    - by user187870
    I want to do something similar to what priceline does. It saves the recent searches in a dropdown menu. When you pick one from the recent search. The form will be populated accordingly. (See screen shot http://yfrog.com/5fscreenshot20100501at105p) This is what I am thinking. (1) Save the searches into an array in a cookie (2), when a recent search item is chosen, retrive the corresponding array element from the cookie and then populate the form. What do you think is the best way to implement this? I especially want to know how to save the form entries into the cookie and how to populate the form.

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  • How do i reset values of dynamically created controls on ASP .NET c# page?

    - by Euclid
    i have an array of buttons added to a panel control and need to reset them to their original values, is this possible pragmatically? protected void Page_Load(object sender, EventArgs e) { RenderTable(); } private void RenderTable() { Button[] board = new Button[9]; for(int i =0; i <board.Length; i++) { board[i] = new Button(); board[i].Text = " "; board[i].Width= board[i].Height = 50; board[i].Click += PlayerClick; board[i].ID = "pos" + i; Panel1.Controls.Add(board[i]); } }

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