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  • File Upload in asp.net

    - by vaibhav
    I am using FileUpload control to facilitate Image file upload on my website. I want to restrict a user to upload only Image file. I am using if (fupFirmLogo.PostedFile.ContentType == "image/Jpeg") { } to check if the file is a image or not. I want to allow all image extensions like PNG, GiF, Jpeg, tif , BMP etc. How should I do it.

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  • What are the types and inner workings of a query optimizer?

    - by Frank Developer
    As I understand it, most query optimizers are cost-based. Some can be influenced by hints like FIRST_ROWS(). Others are tailored for OLAP. Is it possible to know more detailed logic about how Informix IDS and SE's optimizers decide what's the best route for processing a query, other than SET EXPLAIN? Is there any documentation which illustrates the ranking of SELECT statements? I would imagine that "SELECT col FROM table WHERE ROWID = n" ranks 1st. What are the rest of them?.. If I'm not mistaking, Informix's ROWID is a SERIAL(INT) which allows for a max. of 2GB nrows, or maybe it uses INT9 for TB's nrows?.. However, I think Oracle uses HEX values for ROWID. Too bad ROWID can't be oftenly used, since a rows ROWID can change. So maybe ROWID is used by the optimizer as a counter? Perhaps, it could be used for implementing the query progress idea I mentioned in my "Begin viewing query results before query completes" question? For some reason, I feel it wouldn't be that difficult to report a query's progress while being processed, perhaps at the expense of some slight overhead, but it would be nice to know ahead of time: A "Google-like" estimate of how many rows meet a query's criteria, display it's progress every 100, 200, 500 or 1,000 rows, give users the ability to cancel it at anytime and start displaying the qualifying rows as they are being put into the current list, while it continues searching?.. This is just one example, perhaps we could think other neat/useful features, the ingridients are more or less there. Perhaps we could fine-tune each query with more granularity than currently available? OLTP queries tend to be mostly static and pre-defined. The "what-if's" are more OLAP, so let's try to add more control and intelligence to it? So, therefore, being able to more precisely control, not "hint-influence" a query is what's needed and therefore it would be necessary to know how the optimizers logic is programmed. We can then have Dynamic SELECT and other statements for specific situations! Maybe even tell IDS to read blocks of indexes nodes at-a-time instead of one-by-one, etc. etc.

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  • What is difference between Thread Affinity and Process affinity ?

    - by DotNetBeginner
    What is difference between Thread Affinity and Process affinity ? If I have two Threads and I have duel core machine then is it possible to run these two threads parallely on the two cores ? If I use processor affinity Mask then I can control execution of a process on the cores but when I have to run threads on a particular core how can I make these threads core specific ? A very simple example will be appreciated.

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  • Launch Scala REPL programatically?

    - by David Crawshaw
    I would like to launch a Scala Swing application from the command line, then after the application is started, drop into the Scala REPL to use as a control interface. Ideally I would also like to pre-bind some variable names. Even better would be using a Java2D terminal emulator for the REPL, but I couldn't find anything appropriate. Does the Scala REPL have a public API?

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  • Is there a free (LGPL compatible) Grid plugin for jQuery that has similiar capabilities to the Ext-J

    - by Ehrann Mehdan
    One of the most appealing features of Ext-JS is the Grid control in my opinion. I was searching for something free that does something close and have set my hopes on jQuery. I haven't found a jQuery (or other LGPL compatible) Table / Grid plugin that allows to: Reorder columns by dragging Resize columns by dragging Add or Remove columns on the fly Have a default good looking UI (subjective, but Ext-JS look I think is a concensus) In addition to the rest most grid controls have (Sort, Paging etc) Is there a free (LGPL) jQuery plugin that does the above?

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  • What are useful functions for drawing text (MFC)?

    - by kobac
    I'm creating a line chart control, and I need to write (or better say draw) the axis names and axis values. I found DrawText and TextOut functions, but the text they show is flickering and don't know how to set the font and text orientation (I will need vertical text orientation as well as horizontal). Are there any other functions you could recoommend or how to use these stated above and get the results I need? Thanks in advance. Cheers.

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  • Controlled execution of computationally expensive tasks

    - by Sergio
    Say you have an application where a user is typing some text and as she types you'd want to perform some expensive computations in the background (related to the text that is being typed). Although you would like to do lots of things, your main priority is that the system responsiveness stay at acceptable levels so the user doesn't notice such a heavy load. Is there a way (ideally platform/language independent) to control what algorithms should be executed in the background based on the system load and responsiveness?

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  • Why do switch statements continue after case

    - by John W.
    After evaluating a case in a switch statement in Java (and I am sure other languages) the following case's are also evaluated unless a control statement like break, or return is used. I understand this is probably an implementation detail, but what is/are the reasons for having this functionality happen? Thanks!

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  • Webserver parsing chrome input from post request

    - by ravenspoint
    I am developing a small embedded web server. I want to add parsing of post requests, but I am having a problem with input password fields from Chrome. Firefox and IE work perfectly. The HTML: <form action=start.webem method=post> <input value="START" type=submit /><!--#webem start --> <p>Password: <input TYPE=PASSWORD name=yourname AUTOCOMPLETE=OFF /><br> </form> From Firefox I get POST /stop.webem HTTP/1.1 Host: 127.0.0.1:8080 User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9.1.9) Gecko/20100315 Firefox/3.5.9 (.NET CLR 3.5.30729) Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8 Accept-Language: en-us,en;q=0.5 Accept-Encoding: gzip,deflate Accept-Charset: ISO-8859-1,utf-8;q=0.7,*;q=0.7 Keep-Alive: 300 Connection: keep-alive Referer: http://127.0.0.1:8080/ Content-Type: application/x-www-form-urlencoded Content-Length: 13 yourname=test However from Chrome, about 90% of the time, the yourname=test is missing POST /start.webem HTTP/1.1 Host: 127.0.0.1:8080 Connection: keep-alive User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US) AppleWebKit/532.5 (KHTML, like Gecko) Chrome/4.1.249.1045 Safari/532.5 Referer: http://127.0.0.1:8080/ Content-Length: 13 Cache-Control: max-age=0 Origin: http://127.0.0.1:8080 Content-Type: application/x-www-form-urlencoded Accept: application/xml,application/xhtml+xml,text/html;q=0.9,text/plain;q=0.8,image/png,*/*;q=0.5 Accept-Encoding: gzip,deflate,sdch Accept-Language: en-US,en;q=0.8 Accept-Charset: ISO-8859-1,utf-8;q=0.7,*;q=0.3 Though, occasionally it does work!!! POST /start.webem HTTP/1.1 Host: 127.0.0.1:8080 Connection: keep-alive User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US) AppleWebKit/532.5 (KHTML, like Gecko) Chrome/4.1.249.1045 Safari/532.5 Referer: http://127.0.0.1:8080/start.webem Content-Length: 13 Cache-Control: max-age=0 Origin: http://127.0.0.1:8080 Content-Type: application/x-www-form-urlencoded Accept: application/xml,application/xhtml+xml,text/html;q=0.9,text/plain;q=0.8,image/png,*/*;q=0.5 Accept-Encoding: gzip,deflate,sdch Accept-Language: en-US,en;q=0.8 Accept-Charset: ISO-8859-1,utf-8;q=0.7,*;q=0.3 yourname=test I cannot find what causes it to work sometimes.

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  • Asp.net url rewriting and domain redirection

    - by GregM
    I have a domain "test.com" and I want this domain to redirect to "mydomain.com/test". I'm with 1and1 for my domain test.com and with discountAsp for mydomain.com. In the control panel of 1and1 you can set a redirection from a domain to another domain, so everything is fine. But when i'm on the page mydomain.com/test I want my url to be rewritten as test.com Is this possible to do that with IIS or in my asp.page (would prefer in my page) I'm using iis7 Thanks

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  • Conditionals in WPF.

    - by Carlos
    I have the following question: I have a Boolean variable in a configuration file. If it is true I want a property in textbox control to be setup according to the value of that variable. Try the solution above but it does not work. What am I doing wrong? This is a fragment code: bool isKeyboardAvtive = true; //read from configuration file .... .....

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  • getting the request.files count as 0 in mvc???????

    - by Ritz
    hello all, please help me when i am uploading a particu;ar file in mvc and i am requesting the file using request.files in the controller i am getting the count as 0 please tell me where i am missing.i am using asp.net + mvc. i have used a simple file upload control of html. please help me,its urgent Thanks Ritz

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  • Error with varchar(max) column when using net.sourceforge.jtds.jdbc.Driver

    - by Rihan Meij
    Hi I have a MS SQL database running (MS SQL 2005) and am connecting to it via the net.sourceforge.jtds.jdbc.Driver. The query works fine for all the columns except one that is a varchar(max). Any ideas how to get around this issues? I am using the jdbc driver to run a data index into a SOLR implementation. (I do not control the database, so the first prize solution would be where I can tweak the SQL command to get the desired results) Thanks

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  • LVM_INSERTITEM very slow in vista/W7

    - by nikos
    in a large listview control collection (say 5000 items), adding a SINGLE extra item can take 10+ seconds in windows vista/7, and that's just the LVM_INSERTITEM message handling it looks that it only affects LVS_ICON, LVS_REPORT and LVS_LIST are still very fast can anybody confirm this? the same code on windows XP with similar listview window styles adds an extra item instantly thanks nikos

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  • how to extend wpf combo box to bind data?

    - by Shaihan
    i need to bind a collection of objects to a combo box which i can use in different forms. so i want create a custom control which binds the collection to the combo box? how t do it by extending combo box? also how can i define the ItemData template?

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  • WPF Combobox auto complete/intellisense

    - by Petezah
    I am writing a WPF app that has a combo box in it that is populated with a list of names. The problem I face is that the auto complete/intellisense feature ignores case sensitivity. Is there a property in the control or a work around to enable case sensitivity on the auto complete/intellisense.

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  • What is Sharepoint? What are its main advantages for programmer?

    - by netmajor
    Hey, For some time I’ve seen employers demanding Sharepoint knowledge from programmers, but I have a problem understanding what it is :/ But today I was at IT training, and the main guy said something like: “Sharepoint is platform for commit code for programmer, control of version etc...” Is that true? It sounds like SVN. Can someone explain me what advantages it has for a C# programmer? Thanks ;)

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  • Is there any "modern" text editor with command-line/minibuffer?

    - by Pedro Morte Rolo
    A command line in a text editor is a wonderful feature. It allows the user to explore the editor's functionality and learn it's shortcuts in a textual way. It's much faster than using the mouse, and it is much easier to memorise "shortcuts" this way. Emacs and VI provide this, though, emacs and vi are not "modern". By "modern", I mean one that is original built to cope with the modern de-facto standards of selecting, copying, pasting, cutting, undoing, redoing and auto-completing. Cream/vi or Emacs/CUA are not valid options, since there are loads of things built over them that conflict with the mentioned stuff. It would be nice if there was an editor that would cope with the modern de-facto standards out-off-the-box, but still provide a command-line/minibuffer to perform/explore the commands and learn its shortcuts. Is there such a thing? I do not intend to use the "modern" term as derrogatory. I love both Emacs and VI, but I hate their keyboard-shortcut historical baggage. When I reffer to de-facto standards, I am not talking about Windows vs Whatever. Kate, gedit, Eclipse, Intelij or Textmate also follow the norm I am talking about and are not Windows editors. Please do not advertise Vim and Emacs, that's not answering the question. I am asking for alternatives. Why don't I like emacs and vi: Emacs: Despite CUA mode, emacs has loads of modes that conflict with this (e.g. slime, ruby-mode, etc...) It would be nice to have something that would work out-off-the-box. VI: I do not like that it is Visual/Insert-based. I do not know how to browse the text-editor's commands. I do not like that it is so much tought for the terminal. I believe that it has the same problem that I mentioned for emacs. This question is starting to look like requirement analysis.. As de-facto standards I mean: Ctrol-XCV for cut-copy-paste Ctrol-A for select-all Contrl-Z for Undo Ctrol-Y for Redo Control-F for Searching Contrl-Space for auto-complete Shift-arrow for selection Control-arrow for word-navigation Alt-Arrow for moving

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  • Commit all folders and files in a directory using commandline

    - by Shaharyar
    Hello everybody We are having trouble with having a generalized approach to committing with a batch file using commandline svn. We've got a backupscript that created a new folder with the current date containing the database dumps of our database. (Yes, we version control our database). Now how can I use the svn commit command to include all directories that are new in the project? Is there an approach without using the svn add command?` Thanks for all advice!

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