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• IF Statement in VBA

  - by Edmond

  Private Sub sendemail(esubj) Sheets("Actual").Select myfridate = Cells(1, 3).Value myfridate = DateAdd("d", -2, myfdate) myfridate = Format(myfridate, "mm-dd-yy") Sheets("Actual").Select mysatdate = Cells(1, 3).Value mysatdate = DateAdd("d", -1, myfdate) mysatdate = Format(mysatdate, "mm-dd-yy") If Weekday(Now()) = vbMonday Then Set omail = CreateItem(olMailItem) ROW_BEGIN = 1 ROW_END = 72 Sheet1.Activate Range("I7").Select fileSat = "\\FINANCE\Daily Report\" fileSat = fileSat & Left(Range("I7"), 3) & Right(Year(Date), 2) fileSat = fileSat & "\Key Report - " & mysatdate & ".xls" Sheet1.Activate Range("I7").Select fileSun = "\\FINANCE\Daily Report\" fileSun = fileSun & Left(Range("I7"), 3) & Right(Year(Date), 2) fileSun = fileSun & "\Key Report - " & mysundate & ".xls" Sheet1.Activate Range("I7").Select fileFri = "\\FINANCE\Daily Report\" fileFri = fileFri & Left(Range("I7"), 3) & Right(Year(Date), 2) fileFri = fileFri & "\Key Report - " & myfridate & ".xls" With omail .Subject = "M Daily Report" .BodyFormat = olFormatHTML .HTMLBody = "<a href ='" & fileFri & "'>Key Report - " & myfridate & "</a><br><a href ='" & fileSat & "'>Key Indicator Daily Report - " & mysatdate & "</a><br><a href ='" & fileSun & "'>Key Indicator Daily Report - " & mysundate & "</a>" .To = "Me" .Display End With Set omail1 = CreateItem(olMailItem) With omail1 .Subject = "R Daily Report" .BodyFormat = olFormatHTML .To = "You" .Attachments.Add fileFri .Attachments.Add fileSat .Attachments.Add fileSun .Display End With Set omail2 = CreateItem(olMailItem) With omail2 .Subject = "Mc Daily Report" .BodyFormat = olFormatHTML .To = "them" .Attachments.Add fileFri .Attachments.Add fileSat .Attachments.Add fileSun .Display End With Else ROW_BEGIN = 1 ROW_END = 72 Sheet1.Activate Range("I7").Select fileSun = "\\FINANCE\Key Indicator\" fileSun = fileSun & Left(Range("I7"), 3) & Right(Year(Date), 2) fileSun = fileSun & "\Key Report - " & mysundate & ".xls" Set omail = CreateItem(olMailItem) With omail .Subject = "M Daily Report" .BodyFormat = olFormatHTML .HTMLBody = "<a href ='" & fileSun & "'>Key Report - " & mysundate & "</a>" .To = "Me" .Display End With Set omail1 = CreateItem(olMailItem) With omail1 .Subject = "R Daily Report" .BodyFormat = olFormatHTML .To = "You" .Attachments.Add fileSun .Display End With Set omail2 = CreateItem(olMailItem) With omail2 .Subject = "Mc Daily Report" .BodyFormat = olFormatHTML .To = "them" .Attachments.Add fileSun .Display End With End If 'ActiveWorkbook.Close Set omail = Nothing End Sub I have code in vba, where if the weekday is monday, excel will generate 3 emails with 3 attachements/links. But if it is not Monday, excel will generate 3 emails with only 1 attachment/link. My issue is that In my excel spreadsheet there is a tab called Actual and it is populated with a date. If this date within my excel spreadsheet is changed on a monday, to any other day of the week, my vba code will still treat the program as if it is Monday. I need an IF statement that will allow the 3 emails with the 3 attachements/links to generate given the date typed in on the Actual tab within my spreadsheet. I hope this isnt confusing.

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• Why Switch/Case and not If/Else If?

  - by OB OB

  This question in mainly pointed at C/C++, but I guess other languages are relevant as well. I can't understand why is switch/case still being used instead of if/else if. It seems to me much like using goto's, and results in the same sort of messy code, while the same results could be acheived with if/else if's in a much more organized manner. Still, I see these blocks around quite often. A common place to find them is near a message-loop (WndProc...), whereas these are among the places when they raise the heaviest havoc: variables are shared along the entire block, even when not propriate (and can't be initialized inside it). Extra attention has to be put on not dropping break's, and so on... Personally, I avoid using them, and I wonder wether I'm missing something? Are they more efficient than if/else's? Are they carried on by tradition?

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• Getting SQL Syntax Error in INSERT INTO statement in Access 2010

  - by hello123

  I have written the following Insert Into statement in Access 2010 VBA: Private Sub AddBPSSButton_Click() ' CurrentDb.Execute "INSERT INTO TabClearDetail(C_Site) VALUES(" & Me.C_Site & ")" Dim strSQL As String 'MsgBox Me.[Clearance Applying For] 'MsgBox Me.[Contract Applying for] 'MsgBox Me.[C_Site] 'MsgBox Me.[C_SponsorSurname] 'MsgBox Me.[C_SponsorForename] 'MsgBox Me.[C_SponsorContactDetails] 'MsgBox Me.[C_EmploymentDetail] 'MsgBox Me.[C_SGNumber] 'MsgBox Me.[C_REF1DateRecd] 'MsgBox Me.[C_REF2DateRecd] 'MsgBox Me.[C_IDDateRecd] 'MsgBox Me.[C_IDNum] 'MsgBox Me.[C_CriminalDeclarationDate] 'MsgBox Me.[Credit Check Consent] 'MsgBox Me.[C_CreditCheckDate] 'MsgBox Me.[Referred for Management Decision] 'MsgBox Me.[Management Decision Date] 'MsgBox Me.[C_Comment] 'MsgBox Me.[C_DateCleared] 'MsgBox Me.[C_ClearanceLevel] 'MsgBox Me.[C_ContractAssigned] 'MsgBox Me.[C_ExpiryDate] 'MsgBox Me.[C_LinKRef] 'MsgBox Me.[C_OfficialSecretsDate] strSQL = "INSERT INTO TabClearDetail(Clearance Applying For, Contract Applying for, " & _ "C_Site, C_SponsorSurname, C_SponsorForename, C_SponsorContactDetails, C_EmploymentDetail, " & _ "C_SGNumber, C_REF1DateRecd, C_RED2DateRecd, C_IDDateRecd, C_IDNum, " & _ "C_CriminalDeclarationDate, Credit Check Consent, C_CreditCheckDate, Referred for Management Decision, " & _ "Management Decision Date, C_Comment, C_DateCleared, C_ClearanceLevel, C_ContractAssigned, " & _ "C_ExpiryDate, C_LinkRef, C_OfficialSecretsDate) VALUES('" & Me.[Clearance Applying For] & "', " & _ "'" & Me.[Contract Applying for] & "', '" & Me.[C_Site] & "', '" & Me.[C_SponsorSurname] & "', " & _ "'" & Me.[C_SponsorForename] & "', '" & Me.[C_SponsorContactDetails] & "', " & _ "'" & Me.[C_EmploymentDetail] & "', '" & Me.[C_SGNumber] & "', '" & Me.[C_REF1DateRecd] & "', " & _ "'" & Me.[C_REF2DateRecd] & "', '" & Me.[C_IDDateRecd] & "', '" & Me.[C_IDNum] & "', " & _ "'" & Me.[C_CriminalDeclarationDate] & "', '" & Me.[Credit Check Consent] & "', '" & Me.[C_CreditCheckDate] & "', " & _ "'" & Me.[Referred for Management Decision] & "', '" & Me.[Management Decision Date] & "', " & _ "'" & Me.[C_Comment] & "', '" & Me.[C_DateCleared] & "', '" & Me.[C_ClearanceLevel] & "', " & _ "'" & Me.[C_ContractAssigned] & "', '" & Me.[C_ExpiryDate] & "', '" & Me.[C_LinKRef] & "', " & _ "'" & Me.[C_OfficialSecretsDate] & "');" DoCmd.RunSQL (strSQL) 'MsgBox strSQL End Sub All The MsgBox calls work, so I believe I have typed all column names and text box names correctly. I am getting a Syntax error when I get to the DoCmd.RunSQL line. Have been staring at this for quite a while trying to see if I have missed a comma or speech mark or something, but am hoping maybe another set of eyes will see my mistake. Any help will be greatly appreciated. Thanks!

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• How Can I Set Up a "Where" Statement with a PHP Array

  - by Ryan

  Am I able to apply "where" statements to PHP arrays, similar to how I would be able to apply a "where" statement to a MySQL query? For example, suppose I have the following array: $recordset = array( array('host' => 1, 'country' => 'fr', 'year' => 2010, 'month' => 1, 'clicks' => 123, 'users' => 4), array('host' => 1, 'country' => 'fr', 'year' => 2010, 'month' => 2, 'clicks' => 134, 'users' => 5), array('host' => 1, 'country' => 'fr', 'year' => 2010, 'month' => 3, 'clicks' => 341, 'users' => 2), array('host' => 1, 'country' => 'es', 'year' => 2010, 'month' => 1, 'clicks' => 113, 'users' => 4), array('host' => 1, 'country' => 'es', 'year' => 2010, 'month' => 2, 'clicks' => 234, 'users' => 5), array('host' => 1, 'country' => 'es', 'year' => 2010, 'month' => 3, 'clicks' => 421, 'users' => 2), array('host' => 1, 'country' => 'es', 'year' => 2010, 'month' => 4, 'clicks' => 22, 'users' => 3), array('host' => 2, 'country' => 'es', 'year' => 2010, 'month' => 1, 'clicks' => 111, 'users' => 2), array('host' => 2, 'country' => 'es', 'year' => 2010, 'month' => 2, 'clicks' => 2, 'users' => 4), array('host' => 3, 'country' => 'es', 'year' => 2010, 'month' => 3, 'clicks' => 34, 'users' => 2), array('host' => 3, 'country' => 'es', 'year' => 2010, 'month' => 4, 'clicks' => 1, 'users' => 1),); How can I limit the output to only show the keys and values related to 'host' 1 and 'country' fr? Any help would be great.

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• if statement to check available elements

  - by nicmare

  Hi there, i allways found an answer here just be reading the threads but now its time for my very first thread because i was unable to find related questions: this is my target code: <li> <span class="panel"> <a href="…" class="image" rel="group"> <img title="…" src="…" alt="…" width="128" height="96" /> </a> <span class="sizes"> <span class="button"> <a href="#" class="size1" rel="…" title="1">9x13</a> </span> <span class="button"> <a href="#" class="size2" rel="…" title="3">10x15</a> </span> <span class="button"> <a href="#" class="size3" rel="…" title="6">20x30</a> </span> </span> </span> <a href="…" class="image" rel="group"> <span class="added"></span> <img title="…" src="…" alt="…" width="128" height="96" class="thumbnail" /> </a> </li> i add two "span" elements through jquery: $('.sizes a').click( function (e) { e.preventDefault(); $(this).after("<span class='checked'></span><span class='remove'></span>"); } ); the maximum amount of those s are 3 times in a wrapped div. so i am trying to do is the following: $(".remove").live('click', function(){ $(this).hide(); $(this).prev().hide(); // hide checked span if ($(this).parent().parent().children().children().each().hasClass('checked')) { $(this).parent().parent().parent().next().children(".added").hide(); } } ); of course my if statement is crap. i try it in my own words: if there are more than one span(class=remove) in span(class=panel) then nothing should happen. but if there is just one span(class=remove) left in span(class=panel) THEN should be hidden how do i achieve this? there is an online demonstration of this: http://bit.ly/972be4 as you can see, every time when i hit a button below an image, the image gets marked by a label. and i want to hide this label (class=added) when no button is selected Thank you very much! best wishes from germany

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• why am i getting error in this switch statement written in c

  - by mekasperasky

  I have a character array b which stores different identifiers in different iterations . I have to compare b with various identifiers of the programming language C and print it into a file . When i do it using the following switch statement it gives me errors b[i]='\0'; switch(b[i]) { case "if":fprintf(fp2,"if ----> IDENTIFIER \n"); case "then":fprintf(fp2,"then ----> IDENTIFIER \n"); case "else":fprintf(fp2,"else ----> IDENTIFIER \n"); case "switch":fprintf(fp2,"switch ----> IDENTIFIER \n"); case 'printf':fprintf(fp2,"prtintf ----> IDENTIFIER \n"); case 'scanf':fprintf(fp2,"else ----> IDENTIFIER \n"); case 'NULL':fprintf(fp2,"NULL ----> IDENTIFIER \n"); case 'int':fprintf(fp2,"INT ----> IDENTIFIER \n"); case 'char':fprintf(fp2,"char ----> IDENTIFIER \n"); case 'float':fprintf(fp2,"float ----> IDENTIFIER \n"); case 'long':fprintf(fp2,"long ----> IDENTIFIER \n"); case 'double':fprintf(fp2,"double ----> IDENTIFIER \n"); case 'char':fprintf(fp2,"char ----> IDENTIFIER \n"); case 'const':fprintf(fp2,"const ----> IDENTIFIER \n"); case 'continue':fprintf(fp2,"continue ----> IDENTIFIER \n"); case 'break':fprintf(fp2,"long ----> IDENTIFIER \n"); case 'for':fprintf(fp2,"long ----> IDENTIFIER \n"); case 'size of':fprintf(fp2,"size of ----> IDENTIFIER \n"); case 'register':fprintf(fp2,"register ----> IDENTIFIER \n"); case 'short':fprintf(fp2,"short ----> IDENTIFIER \n"); case 'auto':fprintf(fp2,"auto ----> IDENTIFIER \n"); case 'while':fprintf(fp2,"while ----> IDENTIFIER \n"); case 'do':fprintf(fp2,"do ----> IDENTIFIER \n"); case 'case':fprintf(fp2,"case ----> IDENTIFIER \n"); } the error being lex.c:94:13: warning: character constant too long for its type lex.c:95:13: warning: character constant too long for its type lex.c:96:13: warning: multi-character character constant lex.c:97:13: warning: multi-character character constant lex.c:98:13: warning: multi-character character constant lex.c:99:13: warning: character constant too long for its type lex.c:100:13: warning: multi-character character constant lex.c:101:13: warning: character constant too long for its type lex.c:102:13: warning: multi-character character constant lex.c:103:13: warning: character constant too long for its type lex.c:104:13: warning: character constant too long for its type lex.c:105:13: warning: character constant too long for its type lex.c:106:13: warning: multi-character character constant lex.c:107:13: warning: character constant too long for its type lex.c:108:13: warning: character constant too long for its type lex.c:109:13: warning: character constant too long for its type lex.c:110:12: warning: multi-character character constant lex.c:111:13: warning: character constant too long for its type lex.c:112:13: warning: multi-character character constant lex.c:113:13: warning: multi-character character constant lex.c: In function ‘int main()’: lex.c:90: error: case label does not reduce to an integer constant lex.c:91: error: case label does not reduce to an integer constant lex.c:92: error: case label does not reduce to an integer constant lex.c:93: error: case label does not reduce to an integer constant lex.c:94: warning: overflow in implicit constant conversion lex.c:95: warning: overflow in implicit constant conversion lex.c:95: error: duplicate case value lex.c:94: error: previously used here lex.c:96: warning: overflow in implicit constant conversion lex.c:97: warning: overflow in implicit constant conversion lex.c:98: warning: overflow in implicit constant conversion lex.c:99: warning: overflow in implicit constant conversion lex.c:99: error: duplicate case value lex.c:97: error: previously used here lex.c:100: warning: overflow in implicit constant conversion lex.c:101: warning: overflow in implicit constant conversion lex.c:102: warning: overflow in implicit constant conversion lex.c:102: error: duplicate case value lex.c:98: error: previously used here lex.c:103: warning: overflow in implicit constant conversion lex.c:103: error: duplicate case value lex.c:97: error: previously used here lex.c:104: warning: overflow in implicit constant conversion lex.c:104: error: duplicate case value lex.c:101: error: previously used here lex.c:105: warning: overflow in implicit constant conversion lex.c:106: warning: overflow in implicit constant conversion lex.c:106: error: duplicate case value lex.c:98: error: previously used here lex.c:107: warning: overflow in implicit constant conversion lex.c:107: error: duplicate case value lex.c:94: error: previously used here lex.c:108: warning: overflow in implicit constant conversion lex.c:108: error: duplicate case value lex.c:98: error: previously used here lex.c:109: warning: overflow in implicit constant conversion lex.c:109: error: duplicate case value lex.c:97: error: previously used here lex.c:110: warning: overflow in implicit constant conversion lex.c:111: warning: overflow in implicit constant conversion lex.c:111: error: duplicate case value lex.c:101: error: previously used here lex.c:112: warning: overflow in implicit constant conversion lex.c:112: error: duplicate case value lex.c:110: error: previously used here lex.c:113: warning: overflow in implicit constant conversion lex.c:113: error: duplicate case value lex.c:101: error: previously used here

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• With XSLT, how can I use this if-test with an array, when search element is returned by a template call inside the for loop?

  - by codesforcoffee

  I think this simple example might ask the question a lot more clearly. I have an input file with multiple products. There are 10 types of product (2 product IDs is fine enough for this example), but the input will have 200 products, and I only want to output the info for the first product of each type. (Output info for the lowest priced one, so the first one will be the lowest price because I sort by Price first.) So I want to read in each product, but only output the product's info if I haven't already output a product with that same ID. I couldn't figure out how to get the processID template to return a value that I need to do my if-check on, that uses parameters from inside the for-each Product loop -then properly close the if tag in the right place so it won't output the open Product tag unless it passes the if test. I know the following code does not work, but it illustrates the idea and gives me a place to start: <?xml version="1.0" encoding="utf-8"?> <xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform"> <xsl:output method="xml" encoding="UTF-8" indent="yes" cdata-section-elements="prod_name adv_notes"/> <xsl:template match="/"> <List> <xsl:for-each select="ProductGroup"> <xsl:sort select="ActiveProducts/Product/Rate"/> <xsl:variable name="IDarray"> <xsl:for-each select="ActiveProducts/Product"> <xsl:variable name="CurrentID"> <xsl:call-template name="processID"> <xsl:with-param name="ProductCode" select="ProductCode" /> </xsl:call-template> </xsl:variable> <xsl:if test="not(contains($IDarray, $CurrentID))"> <child elem="{@elem}"> <xsl:select value-of="$CurrentID" /> </child> <Product> <xsl:attribute name="ID"> <xsl:select value-of="$CurrentID" /> </xsl:attribute> <prod_name> <xsl:value-of select="../ProductName"/> </prod_name> <rate> <xsl:value-of select="../Rate"/> </rate> </Product> </xsl:if> </xsl:for-each> </xsl:variable> </xsl:for-each> </List> </xsl:template> <xsl:template name="processID"> <xsl:param name="ProductCode"/> <xsl:choose> <xsl:when test="starts-with($ProductCode, '515')">5</xsl:when> <xsl:when test="starts-with($ProductCode, '205')">2</xsl:when> </xsl:choose> </xsl:template> Thanks so much in advance, I know some of the awesome programmers here can help! :) -Holly An input would look like this: <ProductGroup> <ActiveProducts> <Product> <ProductCode> 5155 </ProductCode> <ProductName> House </ProductName> <Rate> 3.99 </Rate> </Product> <Product> <ProductCode> 5158 </ProductCode> <ProductName> House </ProductName> <Rate> 4.99 </Rate> </Product> </ActiveProducts> </ProductGroup> <ProductGroup> <ActiveProducts> <Product> <ProductCode> 2058 </ProductCode> <ProductName> House </ProductName> <Rate> 2.99 </Rate> </Product> <Product> <ProductCode> 2055 </ProductCode> <ProductName> House </ProductName> <Rate> 7.99 </Rate> </Product> </ActiveProducts> </ProductGroup> 200 of those with different attributes. I have the translation working, just needed to add that array and if statement somehow. Output would be this for only that simple input file:

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• Java: Switch statements with methods involving arrays

  - by Shane

  Hi guys I'm currently creating a program that allows the user to create an array, search an array and delete an element from an array. Looking at the LibraryMenu Method, the first case where you create an array in the switch statement works fine, however the other ones create a "cannot find symbol error" when I try to compile. My question is I want the search and delete functions to refer to the first switch case - the create Library array. Any help is appreciated, even if its likely from a simple mistake. import java.util.*; public class EnterLibrary { public static void LibraryMenu() { java.util.Scanner scannerObject =new java.util.Scanner(System.in); LibraryMenu Menu = new LibraryMenu(); Menu.displayMenu(); switch (scannerObject.nextInt() ) { case '1': { System.out.println ("1 - Add Videos"); Library[] newLibrary; newLibrary = createLibrary(); } break; case '2': System.out.println ("2 - Search Videos"); searchLibrary(newLibrary); break; case '3': { System.out.println ("3 - Change Videos"); //Change video method TBA } break; case '4': System.out.println ("4 - Delete Videos"); deleteVideo(newLibrary); break; default: System.out.println ("Unrecognized option - please select options 1-3 "); break; } } public static Library[] createLibrary() { Library[] videos = new Library[4]; java.util.Scanner scannerObject =new java.util.Scanner(System.in); for (int i = 0; i < videos.length; i++) { //User enters values into set methods in Library class System.out.print("Enter video number: " + (i+1) + "\n"); String number = scannerObject.nextLine(); System.out.print("Enter video title: " + (i+1) + "\n"); String title = scannerObject.nextLine(); System.out.print("Enter video publisher: " + (i+1) + "\n"); String publisher = scannerObject.nextLine(); System.out.print("Enter video duration: " + (i+1) + "\n"); String duration = scannerObject.nextLine(); System.out.print("Enter video date: " + (i+1) + "\n"); String date= scannerObject.nextLine(); System.out.print("VIDEO " + (i+1) + " ENTRY ADDED " + "\n \n"); //Initialize arrays videos[i] = new Library (); videos[i].setVideo( number, title, publisher, duration, date ); } return videos; } public static void printVidLibrary( Library[] videos) { //Get methods to print results System.out.print("\n======VIDEO CATALOGUE====== \n"); for (int i = 0; i < videos.length; i++) { System.out.print("Video number " + (i+1) + ": \n" + videos[i].getNumber() + "\n "); System.out.print("Video title " + (i+1) + ": \n" + videos[i].getTitle() + "\n "); System.out.print("Video publisher " + (i+1) + ": \n" + videos[i].getPublisher() + "\n "); System.out.print("Video duration " + (i+1) + ": \n" + videos[i].getDuration() + "\n "); System.out.print("Video date " + (i+1) + ": \n" + videos[i].getDate() + "\n "); } } public static Library searchLibrary( Library[] videos) { //User enters values to setSearch Library titleResult = new Library(); java.util.Scanner scannerObject =new java.util.Scanner(System.in); for (int n = 0; n < videos.length; n++) { System.out.println("Search for video number:\n"); String newSearch = scannerObject.nextLine(); titleResult.getSearch( videos, newSearch); if (!titleResult.equals(-1)) { System.out.print("Match found!\n" + newSearch + "\n"); } else if (titleResult.equals(-1)) { System.out.print("Sorry, no matches found!\n"); } } return titleResult; } public static void deleteVideo( Library[] videos) { Library titleResult = new Library(); java.util.Scanner scannerObject =new java.util.Scanner(System.in); for (int n = 0; n < videos.length; n++) { System.out.println("Search for video number:\n"); String deleteSearch = scannerObject.nextLine(); titleResult.deleteVideo(videos, deleteSearch); System.out.print("Video deleted\n"); } } public static void main(String[] args) { Library[] newLibrary; new LibraryMenu(); } }

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• Python for statement giving an Invalid Syntax error with list

  - by Cold Diamondz

  I have some code in which is throwing an error (I'm using repl.it) import random students = ['s1:0','s2:0','s3:0'] while True: print'\n'*50 print'Ticket Machine'.center(80) print'-'*80 print'1. Clear Student Ticket Values'.center(80) print'2. Draw Tickets'.center(80) menu = raw_input('-'*80+'\nChoose an Option: ') if menu == '1': print'\n'*50 print'CLEARED!' students = ['s1:0','s2:0','s3:0'] raw_input('Press enter to return to the main menu!') elif menu == '2': tickets = [] print'\n'*50 times = int(raw_input('How many tickets to draw? ') for a in students: for i in range(a.split(':')[1]): tickets.append(a.split(':')[0]) for b in range(1,times+1): print str(b) + '. ' + random.choice(tickets) else: print'\n'*50 print'That was not an option!' raw_input('Press enter to return to the main menu!') But it is throwing this error: File "<stdin>", line 19 for a in students: ^ SyntaxError: invalid syntax I am planning on using this in a class, but I can't use it until the bug is fixed, also, student names have been removed for privacy reasons.

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• Using jQuery to Insert a New Database Record

  - by Stephen Walther

  The goal of this blog entry is to explore the easiest way of inserting a new record into a database using jQuery and .NET. I’m going to explore two approaches: using Generic Handlers and using a WCF service (In a future blog entry I’ll take a look at OData and WCF Data Services). Create the ASP.NET Project I’ll start by creating a new empty ASP.NET application with Visual Studio 2010. Select the menu option File, New Project and select the ASP.NET Empty Web Application project template. Setup the Database and Data Model I’ll use my standard MoviesDB.mdf movies database. This database contains one table named Movies that looks like this: I’ll use the ADO.NET Entity Framework to represent my database data: Select the menu option Project, Add New Item and select the ADO.NET Entity Data Model project item. Name the data model MoviesDB.edmx and click the Add button. In the Choose Model Contents step, select Generate from database and click the Next button. In the Choose Your Data Connection step, leave all of the defaults and click the Next button. In the Choose Your Data Objects step, select the Movies table and click the Finish button. Unfortunately, Visual Studio 2010 cannot spell movie correctly :) You need to click on Movy and change the name of the class to Movie. In the Properties window, change the Entity Set Name to Movies. Using a Generic Handler In this section, we’ll use jQuery with an ASP.NET generic handler to insert a new record into the database. A generic handler is similar to an ASP.NET page, but it does not have any of the overhead. It consists of one method named ProcessRequest(). Select the menu option Project, Add New Item and select the Generic Handler project item. Name your new generic handler InsertMovie.ashx and click the Add button. Modify your handler so it looks like Listing 1: Listing 1 – InsertMovie.ashx using System.Web; namespace WebApplication1 { /// <summary> /// Inserts a new movie into the database /// </summary> public class InsertMovie : IHttpHandler { private MoviesDBEntities _dataContext = new MoviesDBEntities(); public void ProcessRequest(HttpContext context) { context.Response.ContentType = "text/plain"; // Extract form fields var title = context.Request["title"]; var director = context.Request["director"]; // Create movie to insert var movieToInsert = new Movie { Title = title, Director = director }; // Save new movie to DB _dataContext.AddToMovies(movieToInsert); _dataContext.SaveChanges(); // Return success context.Response.Write("success"); } public bool IsReusable { get { return true; } } } } In Listing 1, the ProcessRequest() method is used to retrieve a title and director from form parameters. Next, a new Movie is created with the form values. Finally, the new movie is saved to the database and the string “success” is returned. Using jQuery with the Generic Handler We can call the InsertMovie.ashx generic handler from jQuery by using the standard jQuery post() method. The following HTML page illustrates how you can retrieve form field values and post the values to the generic handler: Listing 2 – Default.htm <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <title>Add Movie</title> <script src="http://ajax.microsoft.com/ajax/jquery/jquery-1.4.2.js" type="text/javascript"></script> </head> <body> <form> <label>Title:</label> <input name="title" /> <br /> <label>Director:</label> <input name="director" /> </form> <button id="btnAdd">Add Movie</button> <script type="text/javascript"> $("#btnAdd").click(function () { $.post("InsertMovie.ashx", $("form").serialize(), insertCallback); }); function insertCallback(result) { if (result == "success") { alert("Movie added!"); } else { alert("Could not add movie!"); } } </script> </body> </html>     When you open the page in Listing 2 in a web browser, you get a simple HTML form: Notice that the page in Listing 2 includes the jQuery library. The jQuery library is included with the following SCRIPT tag: <script src="http://ajax.microsoft.com/ajax/jquery/jquery-1.4.2.js" type="text/javascript"></script> The jQuery library is included on the Microsoft Ajax CDN so you can always easily include the jQuery library in your applications. You can learn more about the CDN at this website: http://www.asp.net/ajaxLibrary/cdn.ashx When you click the Add Movie button, the jQuery post() method is called to post the form data to the InsertMovie.ashx generic handler. Notice that the form values are serialized into a URL encoded string by calling the jQuery serialize() method. The serialize() method uses the name attribute of form fields and not the id attribute. Notes on this Approach This is a very low-level approach to interacting with .NET through jQuery – but it is simple and it works! And, you don’t need to use any JavaScript libraries in addition to the jQuery library to use this approach. The signature for the jQuery post() callback method looks like this: callback(data, textStatus, XmlHttpRequest) The second parameter, textStatus, returns the HTTP status code from the server. I tried returning different status codes from the generic handler with an eye towards implementing server validation by returning a status code such as 400 Bad Request when validation fails (see http://www.w3.org/Protocols/rfc2616/rfc2616-sec10.html ). I finally figured out that the callback is not invoked when the textStatus has any value other than “success”. Using a WCF Service As an alternative to posting to a generic handler, you can create a WCF service. You create a new WCF service by selecting the menu option Project, Add New Item and selecting the Ajax-enabled WCF Service project item. Name your WCF service InsertMovie.svc and click the Add button. Modify the WCF service so that it looks like Listing 3: Listing 3 – InsertMovie.svc using System.ServiceModel; using System.ServiceModel.Activation; namespace WebApplication1 { [ServiceBehavior(IncludeExceptionDetailInFaults=true)] [ServiceContract(Namespace = "")] [AspNetCompatibilityRequirements(RequirementsMode = AspNetCompatibilityRequirementsMode.Allowed)] public class MovieService { private MoviesDBEntities _dataContext = new MoviesDBEntities(); [OperationContract] public bool Insert(string title, string director) { // Create movie to insert var movieToInsert = new Movie { Title = title, Director = director }; // Save new movie to DB _dataContext.AddToMovies(movieToInsert); _dataContext.SaveChanges(); // Return movie (with primary key) return true; } } }   The WCF service in Listing 3 uses the Entity Framework to insert a record into the Movies database table. The service always returns the value true. Notice that the service in Listing 3 includes the following attribute: [ServiceBehavior(IncludeExceptionDetailInFaults=true)] You need to include this attribute if you want to get detailed error information back to the client. When you are building an application, you should always include this attribute. When you are ready to release your application, you should remove this attribute for security reasons. Using jQuery with the WCF Service Calling a WCF service from jQuery requires a little more work than calling a generic handler from jQuery. Here are some good blog posts on some of the issues with using jQuery with WCF: http://encosia.com/2008/06/05/3-mistakes-to-avoid-when-using-jquery-with-aspnet-ajax/ http://encosia.com/2008/03/27/using-jquery-to-consume-aspnet-json-web-services/ http://weblogs.asp.net/scottgu/archive/2007/04/04/json-hijacking-and-how-asp-net-ajax-1-0-mitigates-these-attacks.aspx http://www.west-wind.com/Weblog/posts/896411.aspx http://www.west-wind.com/weblog/posts/324917.aspx http://professionalaspnet.com/archive/tags/WCF/default.aspx The primary requirement when calling WCF from jQuery is that the request use JSON: The request must include a content-type:application/json header. Any parameters included with the request must be JSON encoded. Unfortunately, jQuery does not include a method for serializing JSON (Although, oddly, jQuery does include a parseJSON() method for deserializing JSON). Therefore, we need to use an additional library to handle the JSON serialization. The page in Listing 4 illustrates how you can call a WCF service from jQuery. Listing 4 – Default2.aspx <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <title>Add Movie</title> <script src="http://ajax.microsoft.com/ajax/jquery/jquery-1.4.2.js" type="text/javascript"></script> <script src="Scripts/json2.js" type="text/javascript"></script> </head> <body> <form> <label>Title:</label> <input id="title" /> <br /> <label>Director:</label> <input id="director" /> </form> <button id="btnAdd">Add Movie</button> <script type="text/javascript"> $("#btnAdd").click(function () { // Convert the form into an object var data = { title: $("#title").val(), director: $("#director").val() }; // JSONify the data data = JSON.stringify(data); // Post it $.ajax({ type: "POST", contentType: "application/json; charset=utf-8", url: "MovieService.svc/Insert", data: data, dataType: "json", success: insertCallback }); }); function insertCallback(result) { // unwrap result result = result["d"]; if (result === true) { alert("Movie added!"); } else { alert("Could not add movie!"); } } </script> </body> </html> There are several things to notice about Listing 4. First, notice that the page includes both the jQuery library and Douglas Crockford’s JSON2 library: <script src="Scripts/json2.js" type="text/javascript"></script> You need to include the JSON2 library to serialize the form values into JSON. You can download the JSON2 library from the following location: http://www.json.org/js.html When you click the button to submit the form, the form data is converted into a JavaScript object: // Convert the form into an object var data = { title: $("#title").val(), director: $("#director").val() }; Next, the data is serialized into JSON using the JSON2 library: // JSONify the data var data = JSON.stringify(data); Finally, the form data is posted to the WCF service by calling the jQuery ajax() method: // Post it $.ajax({   type: "POST",   contentType: "application/json; charset=utf-8",   url: "MovieService.svc/Insert",   data: data,   dataType: "json",   success: insertCallback }); You can’t use the standard jQuery post() method because you must set the content-type of the request to be application/json. Otherwise, the WCF service will reject the request for security reasons. For details, see the Scott Guthrie blog post: http://weblogs.asp.net/scottgu/archive/2007/04/04/json-hijacking-and-how-asp-net-ajax-1-0-mitigates-these-attacks.aspx The insertCallback() method is called when the WCF service returns a response. This method looks like this: function insertCallback(result) {   // unwrap result   result = result["d"];   if (result === true) {       alert("Movie added!");   } else {     alert("Could not add movie!");   } } When we called the jQuery ajax() method, we set the dataType to JSON. That causes the jQuery ajax() method to deserialize the response from the WCF service from JSON into a JavaScript object automatically. The following value is passed to the insertCallback method: {"d":true} For security reasons, a WCF service always returns a response with a “d” wrapper. The following line of code removes the “d” wrapper: // unwrap result result = result["d"]; To learn more about the “d” wrapper, I recommend that you read the following blog posts: http://encosia.com/2009/02/10/a-breaking-change-between-versions-of-aspnet-ajax/ http://encosia.com/2009/06/29/never-worry-about-asp-net-ajaxs-d-again/ Summary In this blog entry, I explored two methods of inserting a database record using jQuery and .NET. First, we created a generic handler and called the handler from jQuery. This is a very low-level approach. However, it is a simple approach that works. Next, we looked at how you can call a WCF service using jQuery. This approach required a little more work because you need to serialize objects into JSON. We used the JSON2 library to perform the serialization. In the next blog post, I want to explore how you can use jQuery with OData and WCF Data Services.

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• Is there using goto statement in java?

  - by Venkats

  I'm confused this. Most of us told, there is no using the goto statment in java. But i found it is one of keyword in java. Where it can be used? If not used means, then why they included in java keyword?

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• Ruby does 'elseif' still exist

  - by catchmikey

  I'm just learning ROR and I came across the if / else statements. I also came across 'elseif' but my text editor (textmate) doesn't pick it up as a keyword, not does the program run properly. if name == 'Chris' puts 'What a lovely name.' elseif name == 'Katy' puts 'What a lovely name!' end I'm using the book, Learn to Program, which was written several years ago. I was wondering if the 'elseif' was changed because when I simply use 'else' it seems to function properly

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• Rewriting a statement using LAMBDA(C#)

  - by Thinking

  Is it possible to write the folowing using lambda(C#) private static void GetRecordList(List<CustomerInfo> lstCustinfo) { for (int i = 1; i <= 5; i++) { if (i % 2 == 0) lstCustinfo.Add(new CustomerInfo { CountryCode = "USA", CustomerAddress = "US Address" + i.ToString(), CustomerName = "US Customer Name" + i.ToString(), ForeignAmount = i * 50 }); else lstCustinfo.Add(new CustomerInfo { CountryCode = "UK", CustomerAddress = "UK Address" + i.ToString(), CustomerName = "UK Customer Name" + i.ToString(), ForeignAmount = i * 80 }); } }

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• Python urllib2 multiple try statement on urlopen()

  - by Kura

  So, simply I want to be able to run a for across a list of URLs, if one fails then I want to continue on to try the next. I've tried using the following but sadly it throws and exception if the first URL doesn't work. servers = ('http://www.google.com', 'http://www.stackoverflow.com') for server in servers: try: u = urllib2.urlopen(server) except urllib2.URLError: continue else: break else: raise Any ideas? Thanks in advance.

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• VB.NET Use With keyword on existing object?

  - by ropstah

  Is it somehow possible to use the 'With' keyword on an existing object? I would like to do the following using LINQ to objects and can't seem to find a way: From m as Product in Me _ Select m With {.Match = m.Name.IndexOf(query)} _ Where m.Name.IndexOf(query) > 0

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• Best match using mysql like statement(natural match)

  - by mahela

  Hello i want to search table and get best match from the table using like not FULL TEXT SERCH.iS there any wat to do?

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• What's wrong with this function?

  - by ct2k7

  Hello, I'm using this function to determine whether my application should be online or offline: function online() { if ($online == "0") { if($_SESSION['exp_user']['userlevel'] != "1") { include("error/offline.php"); exit(); } } } However, with the data value set to 0 in the database, and $online does = '0', why is error/offline.php not included for those whoose user level is not 1? Thanks :)

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• Need help with a SELECT statement

  - by Travis

  I express the relationship between records and searchtags that can be attached to records like so: TABLE RECORDS id name TABLE SEARCHTAGS id recordid name I want to be able to SELECT records based on the searchtags that they have. For example, I want to be able to SELECT all records that have searchtags: (1 OR 2 OR 5) AND (6 OR 7) AND (10) Using the above data structure, I am uncertain how to structure the SQL to accomplish this. Any suggestions? Thanks!

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• A SELECT statement for Mysql

  - by Hossein

  I have this table: id,bookmarkID,tagID I want to fetch the top N bookmarkIDs for a given list of tags. Does anyone know a very fast solution for this? the table is quite large(12 million records) I am using MySql

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• case insensitive for sql LIKE wildcard statement

  - by David Morrow

  sorry if this is a repeat, i looked around some and didnt find what i was after so here goes SELECT * FROM trees WHERE trees.`title` LIKE '%elm%' this works fine, but not if the tree is named Elm or ELM ect... how do i make sql case insensitive for this wild-card search? again apologies if this is repeated. oh, using MySql 5 on apache

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• Select statement to check multiple rows against 2 variables

  - by Duncan Cook

  I have the following table : alertID inspectorID datelive dateread 1 none 2012-11-06 10:36:03.350 NULL 2 none 2012-11-06 10:36:25.043 NULL 3 none 2012-11-06 10:36:42.433 NULL 1 31030 2012-11-06 10:37:19.193 2012-06-11 10:34:47.000 I want to select the alerts that dont have the inspectors ID against it AND where the alert ID doenst match the one that has the inspectorID against it, ie inspector has read alert 1 so i only want it to return alerts 2 & 3 Am using Classic ASP and MS-SQL Cheers

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• Case Statements versus coded if statements

  - by Eric

  What is more efficient - handling with case statements in sql or handling the same data using if statements in code. I'm asking because my colleague has a huge query that has many case statements. I advised her to take stress off of the DB by coding the case statements. I've found that it is more efficient...but why?

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• Determining an Oracle SQL MERGE statement result

  - by petejamd

  Follow up to this question This (similar version from old link) works in SQL Server 2008, however, Oracle is giving me trouble: MERGE INTO wdm_test USING ( select '10000000000000000000000000000000' Guid from DUAL ) val ON ( wdm_test.Guid = val.Guid ) WHEN MATCHED THEN UPDATE SET test_column = null WHEN NOT MATCHED THEN INSERT (Guid, test_column) VALUES ('10000000000000000000000000000000', null) OUTPUT $action; SQL Error: ORA-00933: SQL command not properly ended Does Oracle not support OUTPUT $action;? If not, is there an alternative?

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• [SQL server] How to insert artificial data into a select statement

  - by user149578

  Hi guys: Suppose we got a original query as follows: SELECT A, B, C FROM tblA Now, I need to additional artificial rows like SELECT 'Kyala', B, C FROM tblA when, for example, C = 100 to be inserted into the resultset. How could I achieve it using a single SQL instead of relying on table variable or temp table?

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• Modifying MySQL Where Statement Based on Array

  - by Ryan

  Using an array like this: $data = array ( 'host' => 1, 'country' => 'fr', ) I would like to create a MySQL query that uses the values of the array to form its WHERE clause like: SELECT * FROM table WHERE host = 1 and country = 'fr' How can I generate this query string to use with MySQL?

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