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  • .NET "Timer" would block other method calls?

    - by Ricky
    Hi guys: In ASP.NET 3.5, we suspect a delegate triggering by a "Timer" will block other method calls. From logs, some function calls will wait for the finishing of the delegate and continue to work. Is it true? If yes, what workaround can I do? PS: The delegate contains codes to use WCF to retrieve data and the following code private void Replace<T>(ref IList<T> src, IList<T> des) { lock(src) { while (src.Count > 0) { GC.SuppressFinalize(src.ElementAt(0)); src.RemoveAt(0); } GC.SuppressFinalize(src); src = des; } } Thanks a lot.

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  • SQL use comma-separated values with IN clause

    - by user342944
    I am developing an ASP.NET application and passing a string value like "1,2,3,4" into a procedure to select those values which are IN (1,2,3,4) but its saying "Conversion failed when converting the varchar value '1,2,3,4' to data type int." Here is the aspx code: private void fillRoles() { /*Read in User Profile Data from database */ Database db = DatabaseFactory.CreateDatabase(); DbCommand cmd = db.GetStoredProcCommand("sp_getUserRoles"); db.AddInParameter(cmd, "@pGroupIDs", System.Data.DbType.String); db.SetParameterValue(cmd, "@pGroupIDs", "1,2,3,4"); IDataReader reader = db.ExecuteReader(cmd); DropDownListRole.DataTextField = "Group"; DropDownListRole.DataValueField = "ID"; while (reader.Read()) { DropDownListRole.Items.Add((new ListItem(reader[1].ToString(), reader[0].ToString()))); } reader.Close(); } Here is my procedure: CREATE Procedure [dbo].[sp_getUserRoles](@pGroupIDs varchar(50)) AS BEGIN SELECT * FROM CheckList_Groups Where id in (@pGroupIDs) END

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  • SQL Stored Procedure fired from C# Code-Behind not working on UPDATE

    - by CSSHell
    I have a stored procedure called from a C# code-behind. The code fires but the update command does not get performed. The stored procedure, if run directly, works. I think I am having a brain fart. Please help. :) CODEBEHIND protected void btnAbout_Click(object sender, EventArgs e) { SqlConnection myConnection = new SqlConnection(strConnection); SqlCommand myCommand = new SqlCommand("spUpdateCMSAbout", myConnection); myConnection.Open(); myCommand.CommandType = CommandType.StoredProcedure; myCommand.Parameters.Add("@AboutText", SqlDbType.NVarChar, -1).Value = txtAbout.Text.ToString(); myCommand.ExecuteNonQuery(); myConnection.Close(); } STORED PROCEDURE ALTER PROCEDURE fstage.spUpdateCMSAbout ( @AboutText nvarchar(max) ) AS BEGIN SET NOCOUNT ON; UPDATE fstage.staticCMS SET About = @AboutText; END HTML <asp:Button ID="btnAbout" runat="server" Text="Save" CausesValidation="False" onclick="btnAbout_Click" UseSubmitBehavior="False" /> C# .NET 4.0

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  • How to speed up my websites (backoffices)

    - by jmpena
    Hello im developing some backends in ASP.NET 2.0 and i have put all the images in Cache, GZIPED my CSS, JS files and everything to speedup the load of each options. the performance its good and i have no problems with the clients but i want "MORE" fast loads and im looking for some recomendations. Is important to mention that those websites are using only in intranets so im thinking to implement my next projects using IFRAME for content that way (i think) the options will be loading faster because they not have to load the entire site. any help / recomendations? thanks in advance.

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  • Is there a slick way to deploy my silverlight app and change settings programmatically?

    - by MIke S.
    I am fairly new to web development. I am at the point of deployment (for testing). I have a few places (maybe 4 places) where I had to add a URI that was non-relative into the appliation. So now, at deployment, those need to be changed. Is there a slick way of handling this? By slick I mean not manually going through the app and changing the URIs or a blanket find and replace (too risky). I only have 4 places to change now, but this could easily change and cause deployment issues. I am using a Microsoft technology stack. Silverlight, ASP.NET, RIA, etc. Development is done in Visual Studio 2010. I noticed that the web projects have a nifty transformation for the web.config...which is nice. Is there an equivalent mechanism for silverlight resources? Any other ways? Any thoughts?

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  • Work with Sun Solaris Operating System from .Net Based Application

    - by Harryboy
    Hello Friends, I am having a very strange requirement, Our client is having one network management system (Netcool) which reads the number of machine from two text file. Now whenever new machine is added in those text files application needs restart. We need to develop one GUI which writes the new machine into network in those files and restart the said application. I was in favor of java based application for the same but here everybody wants solution in ASP .Net Now i am not sure is it possible to write file on sun solaris based operating system from .net application and then restarting the process which is running on the same machine. Please suggest me, it would be great if you are having any articles or examples for the same.

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  • Use currently logged-in user in query

    - by Degan
    I am using VisualWebDeveloperExpress2008 with Access as the membership provider. I have some cases where I want users to edit their own data. This would involve a query where the UserId should equal the UserID of the user who is using the site. I am expecting to use WHERE UserId = ?, but I have not found out where to direct "?". The IDE gives several choices, but I am uncertain which to choose. This, while it looks promising does not work: <SelectParameters> <asp:ProfileParameter Name="UserID" PropertyName="UserId" Type="Int32" /> </SelectParameters> What is best to use for the Select Parameter?

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  • Sending OK Response over HTTP to a webpage request

    - by Prashant
    Hi, I am using an SMS Gateway to make my application receive SMSs. For this, the SMS Gateway sends a request to one of the pages in my application with the message as a querystring parameter. eg. http://myapplication/SMSReceiver.aspx?Message=PaulaIsHome. Now after my page gets invoked, I need to send an OK response to the SMS Gateway so that it doesn't keep retrying to send the same message to my application again and again. I cannot figure out how to send the OK response. I am using ASP .Net and C#. Thanks

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  • any ideas for avoiding duplicate code in C# and javascript

    - by ooo
    i have an asp.net mvc website where i build up most of the page using C# for example building up html tables given a set of data from my viewmodel i also have a lot of javascript that then dynamcially modifies these tables (add row for example). the javascript code to add a new row looks extremely similar to my "rendering" code i have in C# that is used to build up the html table in the first place. Every time i change the c# code to a add a new field, i have to remember to go back to the javascript code to do the same. is there a better way here?

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  • Jquery function calls more than one time.

    - by Harie
    I am having an aspx page in which I am calling a user control. The user control I am using a pop up to display it when a user clicks a asp:linkbutton. In that user control I am having a textbox and I am calling a Jquery Blur to do some validation. While doing so the function is calling [blur] is calling twice. I just called an alert() with the textbox value.So I can see the alert is coming twice .What I need to do to avoid the second time. I need to do it only whenever the user going out of the textbox and that also one time. $('#<%=txtCategory.ClientID %>').blur(function() { alert($(this).val()); }); This is called twice.Thanks for ur response.

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  • Should I license 3rd party controls?

    - by jhon
    some of you will say that this post is not programming related, i think it is! i developed a WebApplication that uses several 3rd party controls using asp.net (c#). i did not buy any license for the 3rd party controls that i am using because i am a freelancer and the controls are too much expensive for me to buy. i already sold the application to several mini-companies that don't care about the license issue. so my question: is it possible that i get sued or caught because of this crime? if yes, then how can they know who am i?

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  • Transform LINQ Dataset into a Matrix for export

    - by Mad Halfling
    Hi folks, I've got a data table with columns in which include Item, Category and Value (and others, but those are the only relevant ones for this problem) that I access via LINQ in a C# ASP.Net MVC app. I want to transform these into a matrix and output that as a CSV file to pull into Excel as matrix with the items down the side, the categories across the top and the values in the row cells. However, I don't know how many, or what, categories there will be in this table, nor will there always be a record for each item/category combination. I've written this by looping round, getting my "master category" list, then looking again for each item, filling in either blank or Value, depending on whether the item/category record exists, but as there are currently 27000 records in the table, this isn't as fast as I'd like. Is there a slicker and faster way I can do this, maybe via LINQ (firing into a quicker SQL statement so the DB server can do the leg-work), or will any method essentially come back to what I am doing? Thx MH

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  • What is the best strategy for a streaming screen capture application ?

    - by The_AlienCoder
    Ok Ive figured out how to do a screen capture of my desktop using Windows Media Encoder 9 + SDK and saving it as a movie on my hardrive. But now I want to take my project further and stream a realtime screen capture of my desktop . The idea is that users accessing my asp.net website will be able to view whatever Im doing on my desktop in real time via the video streaming from my computer. I really dont need the source code just the best strategy, procedure and server requirements.How will users access the streaming video on my website? Will it work on my godaddy shared hosting account or at what point will I need an upgrade? Will I be saving the stream to a file on the server for users to access or is there a way to stream directly ? I just need someone to point me in the right direction...

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  • Is it possible to use RedirectToAction() inside a custom AuthorizeAttribute class?

    - by Lance McNearney
    Using ASP.Net MVC 2, is there any way to use the RedirectToAction() method of the Controller class inside a class that is based on the AuthorizeAttribute class? public class CustomAttribute : AuthorizeAttribute { protected override bool AuthorizeCore(HttpContextBase context) { // Custom authentication goes here return false; } public override void OnAuthorization(AuthorizationContext context) { base.OnAuthorization(context); // This would be my ideal result context.Result = RedirectToAction("Action", "Controller"); } } I'm looking for a way to re-direct the user to a specific controller / action when they fail the authentication instead of returning them to the login page. Is it possible to have the re-direct URL generated for that controller / action and then use RedirectResult()? I'm trying to avoid the temptation to just hard-code the URL.

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  • Get drop down selection from GridView on button press

    - by Chris Stewart
    I have an ASP.NET GridView that has four columns. The first three are typical BoundField elements bound to a DataTable. The forth is a TemplateField element that I create a DropDownList in on the OnRowCreated event for the GridView. What I'm attempting to do is walk down the data source for the GridView when a button is pressed. I really just need to get the values for columns one and four of each row. The first three columns have data as expected but the forth is displaying as empty. Is this because it wasn't a part of the DataTable originally? Is there any way to get the value for each drop down as I've described it, or will I need to rework this so each drop down list is a part of the DataTable?

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  • Can you use Javascript to detect a file download window created server side?

    - by Zacho
    I have a jQuery plugin I use to dynamically create and render a form on a default.aspx asp.net page, then submit it. The page it gets submitted to is a pdf.aspx page. The page builds a PDF then uses Response.Write to write the file (application/pdf) to the browser. I use the same method to render XLSX files to the browser as well. It works really great, but I need a callback or some event to tell the button when to stop spinning. This prevents the user from continuously clicking the Excel or PDF buttons. Does anyone know a way to detect the file dialog window when it was not created using javascript? I am also open to other methods of callback from the server side as well.

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  • Use LINQ to insert data from dataset to SQL

    - by Mayo
    Let's say I have a dataset in an ASP.NET website (.NET 3.5) with 5 tables, each has roughly 30,000 rows and an average of 12 columns. I want to insert all of the data from the dataset into 5 very-similar-but-not-quite-identical tables in SQL Server 2008. I also want to use LINQ (personal preference - trying to learn something new). Is it as simple as iterating through the dataset and, for each row, creating a new instance of the associated class, initializing its data with the dataset's row, adding it to the data model, and then doing one giant SubmitChanges at the end? Are there better ways of doing this with LINQ? Or is this the de-facto standard?

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  • Calling asynchronous methods from wcf service

    - by hima
    In my asp.net application, I am using wcf service to get all the business logic. I am using that service reference in my application to work with that. Now adding that service reference is giving another option Update service reference is giving Generate asynchronous operations. If I check the option and add the service will it generate asynchronous methods for my existing service. If so how do I use the metohd. Let me know the way for that. Thanks, Hima.

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  • MVC + Repository Pattern - Still depends on Data Model?

    - by Jack
    I've started a project for school in which I am using ASP.NET MVC 2 + LINQ2SQL, and a business layer so my UI doesnt interact with the DB directly. My question is this: In my MVC project, when bringing up views and passing around data, I still have to include my Data project for access to the classes in my Linq2Sql project. Is this correct? Example: Controller: ClassesRepository cr = new ClassesRepository(); // this is from my Business project Class classToEdit = cr.GetByClassId(id); // "Class" is from my data project I still have to reference the Class class in my linq2sql data project - shouldn't my UI be completely independent of my data layer? Or maybe I'm going about this all wrong.

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  • Comparing 2 linq applications: Unexpected result

    - by lukesky
    I drafted 2 ASP.NET applications using LINQ. One connects to MS SQL Server, another to some proprietary memory structure. Both applications work with tables of 3 int fields, having 500 000 records (the memory structure is identical to SQL Server table). The controls used are regular: GridView and ObjectDataSource. In the applications I calculate the average time needed for each paging click processing. LINQ + MS SQL application demands 0.1 sec per page change. LINQ + Memory Structure demands 0.8 sec per page change. This Is shocking result. Why the application handling data in memory works 8 times slower than the application using hard drive? Can anybody tell me why that happens?

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  • Rebuild whole page on callback?

    - by AJ
    Hello, In asp.net is it a requirement to rebuild the whole page during every callback? For example my web page is split into three distinct areas and I have an update panel for each area. Lets say I want to update the third area, do I have to bother with any processing of the other two areas? For example lets say there is a grid view in area two. The update panel in area three callbacks to update its content. Do I have to rebind the grid in area two? Thanks, AJ

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  • Display only file name in FileUpload control

    - by Jagd
    I have a webpage in asp.net 3.5 that uses the FileUpload control. When a user clicks on the "Browse" button (which is part of the control) the control displays a file select popup (dialog box). When the user selects the file which they wish to upload, by default the full path to the file is shown in the textbox (which is also part of the control); however, I wish for it to only display the file name and not the full path. Anyone know of a slick and easy way to do this?

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  • MVC 2 ViewContenxt. Writer doesn't exist in MVC 1?

    - by DaveDev
    I had the following code in an ASP.NET MVC 2 application. internal TextWriter _writer; // some stuff _writer = _viewContext.Writer; _writer.Write(_tag.ToString(TagRenderMode.EndTag)); I tried to move it to MVC 1 & now it doesn't build any more. I'm getting this error: 'System.Web.Mvc.ViewContext' does not contain a definition for 'Writer' Can someone point out how I can resolve this? Thanks.

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  • using regular expression / Remove special characters with linq to sql

    - by Prasad
    How can i use regular expressions with linq to sql in the asp.net mvc(C#) application? The columns in my MSSQL table (Products) has some special characters like (, - % ',.....). While searching for a product i need to search without that special chareters. For ex.: I have a product say (ABC-Camp's / One), when i search for "abccamp", it should pull the product. I am trying the query like: from p in _context.pu_Products where p.User_Id == userId && p.Is_Deleted == false && p.Product_Name.ToLower().Contains(text.ToLower()) select new Product { ProductId = p.Product_Id, ProductName = p.Product_Name.Replace("’", "").Replace("\"", ""), RetailPrice = p.Retail_Price ?? 0M, LotSize = p.Lot_Size > 0 ? p.Lot_Size ?? 1 : 1, QuantityInHand = p.Quantity_In_Hand ?? 0 } But i need to search without any special characters...

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  • What conditions cause a web browser to display the "Page Expired" message?

    - by RichardHowells
    I assumed that sending a page out with an expiry (a la)... Response.Cache.SetExpires(System.DateTime.Now.AddSeconds(5)); Response.Cache.SetCacheability(HttpCacheability.Public); Response.Cache.SetValidUntilExpires(true); ...would mean that if the user hit the back button they would see the expired page. It does not seem to work that way. I found that using the back button would simply show the old (IMO expired) page. In fact in experimenting with different combinations of caching/not caching and expiry times I NEVER managed to get the "Page Expired" message out of the browser. What conditions provoke that message? Server Environment ASP .Net. I've only tested in IE8 - I'm assuming that other browsers are consistent here.

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