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• How can you secure/encrypt your querystring in asp.net?

  - by Sem Dendoncker

  Hi, I was wondering how you could encrypt/decrypt your querystring in a simple asp.net page? some values need to be passed between different pages but the querystring cannot be changed or read. Some say httphandles could be the solution for this. Any thoughts? Cheers, M.

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• How do I use a concatenation of 2 columns in a SQL DB in ASP.NET properly?

  - by user293357

  I'm using LinqToSql like this with a CheckBoxList in ASP.NET: var teachers = from x in dc.teachers select x; cbl.DataSource = teachers; cbl.DataTextField = "name"; cbl.DataValueField = "teacherID"; cbl.DataBind(); I want to display both "firstname" and "name" in the DataTextField however. I found this solution but I'm using LINQ: http://stackoverflow.com/questions/839223/concatenate-two-fields-in-a-dropdown How do I do this?

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• ASP.Net - How do I allow users to enter html tags in textbox without runtime errors?

  - by Coder

  I have an input textbox on an asp.net page and when a user inputs any tags like break tags or bold an error occurs. I currently am using the following to encode the input: Server.HtmlEncode(mytextbox.Text) However this only encodes characters when they aren't phrased as an html tag, like if the input is "<<<" is there a way for me to allow the user to put the tags in without it leading to a runtime error? Thanks.

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• In Asp.net (c#) ,how to store an image in database(linq to sql) ?

  - by Anand

  i need to get an image from client and displayed(preview) before saving it into database..and then should be saved in database after getting preview..? Is is possible in Asp.net using c#... ?

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• How do I diagnose a failure in the Membership service on an ASP.NET remote site?

  - by ProfK

  Yesterday I added a custom MembershipProvider to an ASP.NET web application, but when I deployed the application to its remote host server, it failed. I know I had the login info correct, and I also know that for nearly any exception in the login process, the Login control displays the standard error message, "Your login failed", so I assume something is wrong in the code/config. What can I do to diagnose what is wrong on the server?

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• In Asp.net i'm not able to catch any exception properly?

  - by Anand

  In Asp.net (c#),i'm not able to catch exception(FileNotFoundException) properly... i don't know the reason..Actually File s not there..But catch statement fails to catch the exception.. here is the code.. try { System.Drawing.Image imgg1 = System.Drawing.Image.FromFile(Server.MapPath("").ToString() + "\\images\\img1.jpg"); } catch (FileNotFoundException) { Response.Write("<script>alert('Please Select and upload Student's Photo');</script>"); }

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• how to connect asp.net Crystal report with mysql.

  - by Ayyappan.Anbalagan

  how to connect asp.net Crystal report with mysql database. like sql server database connection .is there any connector available to do this..

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• ADO.net - how do I reload database data into an existing & filled DataTable?

  - by Greg

  Hi, If I have an existing DataTable (already filled) but then I want to refresh/reload the data from the database directly (as I know there was a non-ADO.net process that changed data without going through the DataTable), however do I do this "refresh". Note the database data at that point can overwrite whatever is in the DataTable. thanks

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• Is there a standard dialog for constructing an ADO.Net connection string (that is redistributable)?

  - by rathkopf

  I want to use a standard dialog to solicit user input of an ADO.net connection string. It is trivial to do for the oledb connection string as described here: MSDN Article on MSDASC.DataLinks().Prompt I've also found examples that use Microsoft.Data.ConnectionUI.dll and MicrosoftData.ConnectionUI.Dialog.dll from VS (HOWTO: Using the Choose Data Source dialog of Visual Studio 2005 from your own code). Unfortunately these DLLs are not licensed for redistribution. Is there a standard dialog for choosing a data source that can be distributed with my application?

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• Does ASP.Net MVC require you to use master pages?

  - by stocherilac

  My group is working on a new web application and is considering using MVC. However, there are members who would rather include pages than use master pages. Is this possible to do in ASP.NET MVC? In the small amount of time that I've poked around with MVC I have not yet been able to figure out how one might accomplish that.

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• How to let browsers know files have been updated? ASP.NET MVC

  - by fishiefishie

  I have a ASP.NET MVC website hosted in IIS. Sometimes I push changes and user's browser may still using the previous files, causing functionality problems. It is because the browser is caching those files right? What can I do to ensure the user browser loading the updated files?? Thanks!

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• A 110 kb .NET 4.0 app needs 7 seconds for a cold start, thats not acceptable !

  - by msfanboy

  Hello, I am using the .NET 4.0 client profile for my app and I run a dual core with 4 GB Ram and a fast hard disk. nothing big is done at the start just showing a generic List in a wpf listview. How can I make the cold start faster of my assembly ?

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• How do I change the BackColor of the textbox area in an asp.net DropDownList?

  - by Lill Lansey

  How do I change the BackColor of the textbox area in an asp.net DropDownList from white to another color? The Backcolor property changes only the drop down section.

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• Looking for a filtered dropdown list for ASP.NET.

  - by ProfK

  I have some DropDownList controls where the list is very large, so I would like to have a means for the user to filter the list, either based on other fields, e.g. region, or on the first letters typed in a textbox. How can I achieve this in ASP.NET? Is the an open source control out there that will help me?

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• how to attach multiple files as attachment in vb.net ?

  - by ahmed

  How do I attach multiple files as attachments in vb.net? I am trying to use a list box where user will select the file and attach which will appear in a listbox. And also I would like to give the option to delete the attachment also.

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• Can IIS7 re-compile an ASP.Net MVC project?

  - by J. Pablo Fernández

  I'm publishing an ASP.Net MVC as an IIS7 site on my local workstation. Is it possible to get IIS7 to re-compile the project when needed?

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• How to modify raw HTML of ASP.NET page on PreRender?

  - by ace

  I want to access the raw HTML code that my ASP.NET System.Web.UI.Page is about to render. How can i do that? Is there a property or method like System.Web.UI.Page.HTML or something like that. I know I could loop through the Controls List of the page and get access to all the Literal Controls etc, but I was wondering if there's a direct property or method that can return me the raw html, which I can modify just before rendering the page.

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• Error in Properties of .net Project & Designer file is locked.

  - by Muhammad Kashif Nadeem

  Designer file is locked and when go to project properties it gives this error. An error occurred trying to load the project properties window. Close the window and try again. The CurrentContext property of the LicenseManager is currently locked and cannot be changed. .net framework 3.5 VS 2008

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• If you stick to standard coding in .NET, is there reason to manually invoke the GC or run finalizers

  - by Matt

  If you stick to managed code and standard coding (nothing that does unconventional things withe CLR) in .NET, is there any reason to manually invoke the GC or request to run finalizers on unreferenced objects? The reason I ask is thaty I have an app that grows huge in Working Memory set. I'm wondering if calling System.GC.Collect(); and System.GC.RunFinalizers(); would help, and if it would force anything that wouldn't be done by the CLR normally anyways.

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• ASP.NET calendar shows 6 weeks, how can i make it display 5?

  - by schmoopy

  The default asp.net calendar renders with 6 displayable weeks, the last week is always the 'next' month and i dont care about it. Is there a way to display only 5 weeks?

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• How remove "localhost:portno" when running an asp.net website under iis?

  - by chandru_cp

  How remove "localhost:portno" when running an asp.net website under iis?... When i browse my virtual directory i can http://localhost:120/mine/Forms/Clients.aspx.....

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• Is there a free version of IIS to demo ASP.net applications on that will run on XP

  - by Greg

  Hi, Is there a free version of IIS to demo ASP.net applications on that will run on XP? (i.e. or does one need a machine with Windows Server and it's license for a demo - e.g. if a prototype was built in VS2010 but one wanted to demo it on another PC)

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• Where can I get .net APIs for Blackboard development ?

  - by Vijay

  Hi All, Does anyone know where I can get the API or SDK provided by BlackBoard LMS for .net ? I have searched over their web site, but didn't found anything apart from documents. Please help me to get those APIs or SDK. Thanks in advance.

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• What is the CodePage for DBCS so I can encode an xml string and show it in a asp.net text box?

  - by OutOFTouch

  What is the CodePage for DBCS so I can encode an xml string and show it in a asp.net text box? I don't think I should have to convert the characters myself when Server.HTMLEncode will work if the string is DBCS. Thanks!

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• How do I play an AU file using .NET?

  - by mafutrct

  The AU file format is very common in the Java world. In .NET however, I found no built-in class to play this format. Did I miss something, or do I need to resort to using a third-party library?

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