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  • ADO.NET Entity Framework: Can I have multiple entity types for the same row.

    - by black_nm
    Hi all, I have a base class Participants inherited by Artist, Author and TextWriter. I have only one table in the data store: Participants { ID, FirstName, LastName, IsArtist, IsAuthor, IsTextWriter, } The idea is to have a class for all the roles that a participant can have. I've managed to create the edmx file but when I try to get an Participant (as Artist) that is also an Author I receive the following error: All objects in the EntitySet 'Participants' must have unique primary keys. However, an instance of type 'Artist' and an instance of type 'Author' both have the same primary key value, 'EntitySet=Participants;ID=1'. Thank you

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  • How do I randomly fill an array in Java?

    - by Kat
    I'm writing a program that creates a 2D array from a integer n. I then have to fill the array with values from 1 to the n*n array size and check to see if it is a magic square. The way I am doing it now fills the array in order from 1 to n*n array size. How can I make that random? My code: System.out.print("Enter an whole number: "); int n = scan.nextInt(); int [][] magic = new int [n][n]; for (int row = 0; row < magic.length; row++) { for(int col = 0; col < magic[row].length; col++) magic[row][col] = ((row * n) + 1) + col; }

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  • t-sql most efficient row to column? for xml path, pivot

    - by ajberry
    create table _orders ( OrderId int identity(1,1) primary key nonclustered ,CustomerId int ) create table _details ( DetailId int identity(1,1) primary key nonclustered ,OrderId int ,ProductId int ) insert into _orders (CustomerId) select 1 union select 2 union select 3 insert into _details (OrderId,ProductId) select 1,100 union select 1,158 union select 1,234 union select 2,125 union select 3,105 union select 3,101 union select 3,212 union select 3,250 -- select orderid ,REPLACE(( SELECT ' ' + CAST(ProductId as varchar) FROM _details d WHERE d.OrderId = o.OrderId ORDER BY d.OrderId,d.DetailId FOR XML PATH('') ),'&#x20;','') as Products from _orders o I am looking for the most performant way to turn rows into columns. I have a requirement to output the contents of the db (not actual schema above, but concept is similar) in both fixed width and delimited formats. The above FOR XML PATH query gives me the result I want, but when dealing with anything other than small amounts of data, can take awhile. I've looked at pivot but most of the examples I have found are aggregating information. I just to combine the child rows and tack them onto the parent. For example, for an order it would need to output: OrderId,Product1,Product2,Product3,etc Thoughts or suggestions? I am using SQL Server 2k5.

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  • Passing big multi-dimensional array to function in C

    - by kirbuchi
    Hi, I'm having trouble passing a big array to a function in C. I declare: int image[height][width][3]={}; where height and width can be as big as 1500. And when I call: foo((void *)image,height,width); which is declared as follows: int *foo(const int *inputImage, int h, int w); I get segmentation fault error. What's strange is that if my values are: height=1200; width=290; theres no problem, but when they're: height=1200; width=291; i get the mentioned error. At 4 bytes per integer with both height and width of 1500 (absolute worst case) the array size would be of 27MB which imo isn't that big and shouldn't really matter because I'm only passing a pointer to the first element of the array. Any advice?

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  • Data from array to sql

    - by espentf
    I'm making a webshop for a school asignment and therfore i needed to make a shopping cart. In the shopping cart the data is storred in an array. The code for when I echo it out is <tr> <td><?php echo $row['Navn'];?></td> <td><input type="text" name="antall-<?php echo $row['id_produkt'];?>" size="5" value=" <?php echo $_SESSION['handlekurv'][$row['id_produkt']]['antall'];?>" /> </td> <td><?php echo $row['Pris'];?></td> <td><?php echo $_SESSION['handlekurv'][$row['id_produkt']]['antall']*$row['Pris'];?></td></tr> What i want is the store the data this code echoes out from the array, in a sql database. Is there anyone who can help me whith this problem?

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  • SQL Query to delete oldest rows over a certain row count?

    - by Casey
    I have a table that contains log entries for a program I'm writing. I'm looking for ideas on an SQL query (I'm using SQL Server Express 2005) that will keep the newest X number of records, and delete the rest. I have a datetime column that is a timestamp for the log entry. I figure something like the following would work, but I'm not sure of the performance with the IN clause for larger numbers of records. Performance isn't critical, but I might as well do the best I can the first time. DELETE FROM MyTable WHERE PrimaryKey NOT IN (SELECT TOP 10,000 PrimaryKey FROM MyTable ORDER BY TimeStamp DESC)

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  • Select a random row from table, but with odds?

    - by Don
    I have a table that describes a variety of objects in my system (ie. umbrella, boots, satchel, whatever). Each one of these objects needs to have a distinct prevalence or incidence. For example, the umbrella is rarer than the boots. Based on those factors, I need to randomly select a single object (including a blank or 'no object found') based on that incidence value. Yikes. Make sense?

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  • t-sql most efficient row to column? crosstab for xml path, pivot

    - by ajberry
    I am looking for the most performant way to turn rows into columns. I have a requirement to output the contents of the db (not actual schema below, but concept is similar) in both fixed width and delimited formats. The below FOR XML PATH query gives me the result I want, but when dealing with anything other than small amounts of data, can take awhile. select orderid ,REPLACE(( SELECT ' ' + CAST(ProductId as varchar) FROM _details d WHERE d.OrderId = o.OrderId ORDER BY d.OrderId,d.DetailId FOR XML PATH('') ),'&#x20;','') as Products from _orders o I've looked at pivot but most of the examples I have found are aggregating information. I just want to combine the child rows and tack them onto the parent. I should also point out I don't need to deal with the column names either since the output of the child rows will either be a fixed width string or a delimited string. For example, given the following tables: OrderId CustomerId ----------- ----------- 1 1 2 2 3 3 DetailId OrderId ProductId ----------- ----------- ----------- 1 1 100 2 1 158 3 1 234 4 2 125 5 3 101 6 3 105 7 3 212 8 3 250 for an order I need to output: orderid Products ----------- ----------------------- 1 100 158 234 2 125 3 101 105 212 250 or orderid Products ----------- ----------------------- 1 100|158|234 2 125 3 101|105|212|250 Thoughts or suggestions? I am using SQL Server 2k5. Example Setup: create table _orders ( OrderId int identity(1,1) primary key nonclustered ,CustomerId int ) create table _details ( DetailId int identity(1,1) primary key nonclustered ,OrderId int ,ProductId int ) insert into _orders (CustomerId) select 1 union select 2 union select 3 insert into _details (OrderId,ProductId) select 1,100 union select 1,158 union select 1,234 union select 2,125 union select 3,105 union select 3,101 union select 3,212 union select 3,250 using FOR XML PATH: select orderid ,REPLACE(( SELECT ' ' + CAST(ProductId as varchar) FROM _details d WHERE d.OrderId = o.OrderId ORDER BY d.OrderId,d.DetailId FOR XML PATH('') ),'&#x20;','') as Products from _orders o which outputs what I want, however is very slow for large amounts of data. One of the child tables is over 2 million rows, pushing the processing time out to ~ 4 hours. orderid Products ----------- ----------------------- 1 100 158 234 2 125 3 101 105 212 250

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  • cant populate cells with an array when i have loaded a second UITableViewController

    - by richard Stephenson
    hi there, im very new to iphone programming, im creating my first app, (a world cup one) the first view is a table view. the cell text label is filled with an array, so it shows all the groups (group a, B, c,ect) then when you select a group, it pulls on another UITableViewcontroller, but whatever i do i cant set the text label of the cells (e.g france,mexico,south africa, etc. infact nothin i do to the cellForRowAtIndexPath makes a difference , could someone tell me what im doing wrong please Thanks `here is my code for the view controller #import "GroupADetailViewController.h" @implementation GroupADetailViewController @synthesize groupLabel = _groupLabel; @synthesize groupADetail = _groupADetail; @synthesize teamsInGroupA; #pragma mark Memory management - (void)dealloc { [_groupADetail release]; [_groupLabel release]; [super dealloc]; } #pragma mark View lifecycle - (void)viewDidLoad { [super viewDidLoad]; // Set the number label to show the number data teamsInGroupA = [[NSArray alloc]initWithObjects:@"France",@"Mexico",@"Uruguay",@"South Africa",nil]; NSLog(@"loaded"); // Set the title to also show the number data [[self navigationItem]setTitle:@"Group A"]; //[[self navigationItem]cell.textLabel.text:@"test"]; //[[self navigationItem] setTitle[NSString String } - (void)viewDidUnload { [self setgroupLabel:nil]; } #pragma mark Table view methods - (NSInteger)numberOfSectionsInTableView:(UITableView*)tableView { // Return the number of sections in the table view return 1; } - (NSInteger)tableView:(UITableView*)tableView numberOfRowsInSection:(NSInteger)section { // Return the number of rows in a specific section // Since we only have one section, just return the number of rows in the table return 4; NSLog:("count is %d",[teamsInGroupA count]); } - (UITableViewCell*)tableView:(UITableView*)tableView cellForRowAtIndexPath:(NSIndexPath*)indexPath { static NSString *cellIdentifier2 = @"Cell2"; // Reuse an existing cell if one is available for reuse UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:cellIdentifier2]; // If no cell was available, create a new one if (cell == nil) { NSLog(@"no cell, creating"); cell = [[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:cellIdentifier2] autorelease]; [cell setAccessoryType:UITableViewCellAccessoryDisclosureIndicator]; } NSLog(@"cell already there"); // Configure the cell to show the data for this row //[[cell textLabel]setText:[NSString string //[[cell textLabel]setText:[teamsInGroupA objectAtIndex:indexPath.row]]; //NSUInteger row = [indexPath row]; //[cell setText:[[teamsInGroupA objectAtIndex:indexPath:row]retain]]; //cell.textLabel.text:@"Test" [[cell textLabel]setText:[teamsInGroupA objectAtIndex:indexPath.row]]; return cell; } @end #import "GroupADetailViewController.h" @implementation GroupADetailViewController @synthesize groupLabel = _groupLabel; @synthesize groupADetail = _groupADetail; @synthesize teamsInGroupA; #pragma mark Memory management - (void)dealloc { [_groupADetail release]; [_groupLabel release]; [super dealloc]; } #pragma mark View lifecycle - (void)viewDidLoad { [super viewDidLoad]; // Set the number label to show the number data teamsInGroupA = [[NSArray alloc]initWithObjects:@"France",@"Mexico",@"Uruguay",@"South Africa",nil]; NSLog(@"loaded"); // Set the title to also show the number data [[self navigationItem]setTitle:@"Group A"]; //[[self navigationItem]cell.textLabel.text:@"test"]; //[[self navigationItem] setTitle[NSString String } - (void)viewDidUnload { [self setgroupLabel:nil]; } #pragma mark Table view methods - (NSInteger)numberOfSectionsInTableView:(UITableView*)tableView { // Return the number of sections in the table view return 1; } - (NSInteger)tableView:(UITableView*)tableView numberOfRowsInSection:(NSInteger)section { // Return the number of rows in a specific section // Since we only have one section, just return the number of rows in the table return 4; NSLog:("count is %d",[teamsInGroupA count]); } - (UITableViewCell*)tableView:(UITableView*)tableView cellForRowAtIndexPath:(NSIndexPath*)indexPath { static NSString *cellIdentifier2 = @"Cell2"; // Reuse an existing cell if one is available for reuse UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:cellIdentifier2]; // If no cell was available, create a new one if (cell == nil) { NSLog(@"no cell, creating"); cell = [[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:cellIdentifier2] autorelease]; [cell setAccessoryType:UITableViewCellAccessoryDisclosureIndicator]; } NSLog(@"cell already there"); // Configure the cell to show the data for this row //[[cell textLabel]setText:[NSString string //[[cell textLabel]setText:[teamsInGroupA objectAtIndex:indexPath.row]]; //NSUInteger row = [indexPath row]; //[cell setText:[[teamsInGroupA objectAtIndex:indexPath:row]retain]]; //cell.textLabel.text:@"Test" [[cell textLabel]setText:[teamsInGroupA objectAtIndex:indexPath.row]]; return cell; } @end

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  • How do I Transpose with the 10,000 row limits of excel?

    - by ezlee69
    I am trying to Transpose all of column "B", but want to skip a line then grab the next 4 and paste them in the same column. How can I make this loop all of column "B" skipping every 5th line and change the range to the next open cell or "Range" automatically without manually typing each one individually? Range("B12:B16").Select Selection.Copy Sheets("Sheet2").Select Range("A2").Select Selection.PasteSpecial Paste:=xlPasteAll, Operation:=xlNone, SkipBlanks:= _ False, Transpose:=True Range("B18:B22").Select Selection.Copy Sheets("Sheet2").Select Range("A3").Select Selection.PasteSpecial Paste:=xlPasteAll, Operation:=xlNone, SkipBlanks:= _ False, Transpose:=True Range("B24:B28").Select Selection.Copy Sheets("Sheet2").Select Range("A4").Select Selection.PasteSpecial Paste:=xlPasteAll, Operation:=xlNone, SkipBlanks:= _ False, Transpose:=True

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  • Document Similarity: Comparing two documents efficiently

    - by seanieb
    I have a loop that calculates the similarity between two documents. It collects all the tokens in a document and their scores, and places them in dictionary. It then compares the dictionaries This is what I have so far, it works, but is super slow: # Doc A cursor1.execute("SELECT token, tfidf_norm FROM index WHERE doc_id = %s", (docid[i][0])) doca = cursor1.fetchall() #convert tuple to a dictionary doca_dic = dict((row[0], row[1]) for row in doca) #Doc B cursor2.execute("SELECT token, tfidf_norm FROM index WHERE doc_id = %s", (docid[j][0])) docb = cursor2.fetchall() #convert tuple to a dictionary docb_dic = dict((row[0], row[1]) for row in docb) # loop through each token in doca and see if one matches in docb for x in doca_dic: if docb_dic.has_key(x): #calculate the similarity by summing the products of the tf-idf_norm similarity += doca_dic[x] * docb_dic[x] print "similarity" print similarity I'm pretty new to Python, hence this mess. I need to speed it up, any help would be appreciated. Thanks.

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  • SQLServer triggers

    - by Evl-ntnt
    Please help me to write trigger that, adds new rows in table I have 3 tables in my database. 1) Regions (id, name); id - primary 2) Technics (id, name); id - primary 3) Availability (id, region, technic, count); id - primary, region - foreign on Regions.id, Technik - foreign on technics.id I want to add new row in Availability for each Technics row on adding row in Regions. Somethink like: procedure void OnAddNewRegion(int region) { foreach (Row r in Technic) { Availability.Rows.Add(new Row(id, region, r.Id, 0)); } } But in SQL trigger. Same I want to do on the adding new Technics row

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  • How can I create an automatically generated alteranate table row color ?

    - by UXdesigner
    Good day, I've been trying to make this CSS code work: table.mytable { margin: 0; padding: 0; border: 0; font-size: 0.8em; border-collapse: collapse; } table.mytable td, table.mytable th { width: auto; padding: 2px 4px; vertical-align: top; } table.mytable th { color: #fff; background:url(images/header-bg.gif); text-align: left; } table.mytable tr.alternateColor { background-color:#E9F3FC; } well, it works, if I do write it manually. But as the tables are going to be generated thru asp.NET (Aspx) , which is not manually created- I'd like my table to generate the alternate rows. I've been trying to make this work with Javascript, but I can't figure it out and I believe this is a good resource site. I've been using a manual table with Adobe Dreamweaver cs4 as a test, but I have to put the class of "alternatecolors" in order to make them appear, and I can't do this normally.: Question is , can someone provide me a good Javascript that I would put in the header of the file, and actually help me out to make this work ? I think I'm burned...or maybe I can't see what others see quickly due to the amount of time I've spent. I just tried posting the code of my table here, but I couldn't get it well formatted and I got to run... I'm not using an 'id' on this table, but the class is 'mytable'. Thank you so much for your good help.

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  • What's the simplest way to create a Zend_Form tabular display with each row having a radio button?

    - by RenderIn
    I've seen simple examples of rendering a Zend_Form using decorators, but I'm not sure they are able to handle the issue I'm facing very well. I query the database and get an array of user objects. I want to display these users as a form, with a radio button next to each of them and a submit button at the bottom of the page. Here's roughly what the form will look like: [user id] [email] [full name] ( ) 1 [email protected] Test user 1 (*) 2 [email protected] Test user 2 [SUBMIT] Is this something achievable in a reasonably straightforward way or do I need to use the ViewScript partial?

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  • It is possible to record a data that have a straight row in mysql based on date or sequence?

    - by user1987816
    I want to get the data that have a straight Sell more than 3 times, it is possible in mysql? If not, how to get it right? I'm need it on mysql or php. my database:- +----------+---------------------+--------+ | Username | Date | Action | +----------+---------------------+--------+ | Adam | 2014-08-20 22:30:20 | Sell | | Adam | 2014-08-20 22:30:20 | Sell | | Adam | 2014-08-20 22:30:20 | Sell | | Adam | 2014-08-20 22:30:20 | Buy | | Adam | 2014-08-20 22:30:20 | Buy | | Adam | 2014-08-20 22:30:20 | Sell | | Adam | 2014-08-20 22:30:20 | Sell | | Adam | 2014-08-20 22:30:20 | Sell | | Adam | 2014-08-20 22:30:20 | Sell | | Nick | 2014-08-20 22:30:20 | Sell | | Nick | 2014-08-20 22:30:20 | Sell | | Nick | 2014-08-20 22:30:20 | Sell | | Nick | 2014-08-20 22:30:20 | Sell | | Nick | 2014-08-20 22:30:20 | Buy | +----------+---------------------+--------+ From the table above, I need to list out all data that have a straight sell more then 3 times. RESULT +----------+---------------------+--------+-------------+ | Username | Date | Action | Straight 3+ | +----------+---------------------+--------+-------------+ | Adam | 2014-08-20 22:30:20 | Sell | 3 | | Adam | 2014-08-20 22:30:20 | Sell | 4 | | Nick | 2014-08-20 22:30:20 | Sell | 4 | +----------+---------------------+--------+-------------+

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  • Can I combine values from multiple rows in another table into multiple columns of one row using SQL?

    - by Jordi
    I have two tables: T1: | M_ID | P_ID1 | P_ID2 | rest of T1 columns | | 0 | 0 | 1 | ... | | 1 | 2 | 3 | ... | T2: | P_ID | Type | A | B | | 0 | 1 | a | e | | 1 | 2 | b | f | | 2 | 1 | c | g | | 3 | 2 | d | h | Now, I want to have a query that selects this: | M_ID | P_1a | P_1b | P_2a | P_2b | rest of T1 columns | | 0 | a | e | b | f | ... | | 1 | c | g | c | h | ... | So, in words: I want to select all columns from T1, but I want to replace P_ID1 with the columns from T2, where the P_ID is equal to P_ID1, and the type is 1, and basically the same for P_ID2. I can obviously get the information I need with multiple queries, but I was wondering if there is a way that I can do this with one query. Any ideas? I'm currently using SQL Server 2008r2, but I'd also be interested in solutions for other database software. Thanks for the help!

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  • How to replace a div container with javascript

    - by Kovu
    Hi, I must have a little design in javascript. I have a menu with 5 entrys and only 1 HTML-page. So I will have a content-div and enabled and disabled different static content in it, each menu-entry is another content. I tried with 5 divs and disable 4 of them and enable 1, but the element under each other means every div is like a - enabled or not, so the "content" is moving then. Hope its understandable. Here is the code so far: <html><head><title>Des Einsame-Katerchen's kleine Homepage</title> <style type="text/css"> a:link { font-weight:bold; color:blue; text-decoration:none; } a:visited { font-weight:bold; color:blue; text-decoration:none; } a:focus { font-weight:bold; color:blue; text-decoration:none; } a:hover { font-weight:bold; color:blue; text-decoration:line-through; } a:active { font-weight:bold; color:blue; text-decoration:none; } h1:focus { background-color:red; } h1:hover { background-color:silver; } h1:active { background-color:green; } </style> <script> function an(id) { document.getElementById('start').style.visibility = 'hidden'; document.getElementById('start').style.height = '0px'; document.getElementById('me').style.visibility = 'hidden'; document.getElementById('me').style.height = '0px'; document.getElementById('rpg').style.visibility = 'hidden'; document.getElementById('rpg').style.height = '0px'; document.getElementById('musik').style.visibility = 'hidden'; document.getElementById('musik').style.height = '0px'; document.getElementById('screens').style.visibility = 'hidden'; document.getElementById('screens').style.height = '0px'; document.getElementById(id).style.visibility = 'visible'; document.getElementById(id).style.height = '500px'; } </script> </head> <body style=" " > <div style="width=100%; text-align:center; border: 1px red solid; height:40px;"> <div style="float:left; width:100px;"><a href="#" OnClick="an('start')" >Startseite</a></div> <div style="float:left; width:100px;"><a href="#" OnClick="an('me')" >Über mich</a></div> <div style="float:left; width:100px;"><a href="#" OnClick="an('rpg')" >RPG-Chars</a></div> <div style="float:left; width:100px;"><a href="#" OnClick="an('musik')" >Musik</a></div> <div style="float:left; width:150px;"><a href="#" OnClick="an('screens')" >Knuddels-Screens</a></div> </div> <br> <div id="start" style="border:1px red solid; width:500px; height:500px; overflow: visible; " > a </div> <div id="me" style="border:1px red solid; width:500px; height:0px; overflow: visible; visibility: hidden; " > b </div> <div id="rpg" style="border:1px red solid; width:500px; height:0px; overflow: visible; visibility: hidden; " > c </div> <div id="musik" style="border:1px red solid; width:500px; height:0px; overflow: visible; visibility: hidden; " > d </div> <div id="screens" style="border:1px red solid; width:500px; height:0px; overflow: visible; visibility: hidden; " > e </div> </body>

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  • NHibernate cascade and inverse

    - by Kordonme
    I have three mappings as follows: public MainChapterMap() { // other properties HasMany(x => x.ClientSpecific).KeyColumn("MainChapterId"); } public MainChapterClientMap() { // other properties References(x => x.MainChapter).Column("MainChapterId"); HasMany(x => x.Details).KeyColumn("MainChapterClientId"); } public MainChapterClientDetailMap() { // other properties References(x => x.MainChapterClient).Column("MainChapterClientId"); } MainChapter has many client-specific chapters. The client-specific chapters (MainChapterClient) has many translations (MainChapterClientDetail) The dele rules should be as follow: When deleting a MainChapter Delete the MainChapterClient row Delete the MainChapterClientDetail row(s) When deleting a MainChapterClient Do NOT delete the MainChapter row Delete the MainChapterClientDetail row(s) When deleting a MainChapterClientDetail Do NOT delete the MainChapter row Do NOT delete the MainChapterClientDetail row(s) But I no matter what I end up getting this error: deleted object would be re-saved by cascade (remove deleted object from associations)[Entities.MainChapterClient#39] I'm not sure how to set up my cascades anymore. Any help are more than welcomed!

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  • how to find index of a row in sql server?

    - by NoviceToDotNet
    How can i fetch column names from a tale on index basis, like i want to make a tables whose column name should be the name of last column fields of a result set of a query, but those result sets last columns value may be different at different execution time, so i want to know how can i fetch those index value of that last column to make a temp table with column name of those last columns value of a result set. Is there any way/function in sql server to dynamically form that?

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  • What is dot and hash symbols mean in JQuery

    - by kwokwai
    Hi all, I feel confused of the dot and hash symbols in the following example: <DIV ID="row"> <DIV ID="c1"> <Input type="radio" name="testing" id="testing" VALUE="1">testing1 </DIV> </DIV> Code 1: $('#row DIV').mouseover(function(){ $('#row DIV).addClass('testing'); }); Code 2 $('.row div').mouseover(function(){ $(this).addClass('testing'); });? Codes 1 and 2 look very similar, and so it makes me so confused that when I should use ".row div" to refer to a specific DIV instead of using "#row div" ?

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  • Exception Error in c#

    - by Kumu
    using System; using System.Collections.Generic; using System.ComponentModel; using System.Data; using System.Drawing; using System.Linq; using System.Text; using System.Windows.Forms; using System.IO; using System.Runtime.Serialization.Formatters.Binary; namespace FoolballLeague { public partial class MainMenu : Form { FootballLeagueDatabase footballLeagueDatabase; Game game; Login login; public MainMenu() { InitializeComponent(); changePanel(1); } public MainMenu(FootballLeagueDatabase footballLeagueDatabaseIn) { InitializeComponent(); footballLeagueDatabase = footballLeagueDatabaseIn; } private void Form_Loaded(object sender, EventArgs e) { } private void gameButton_Click(object sender, EventArgs e) { int option = 0; changePanel(option); } private void scoreboardButton_Click(object sender, EventArgs e) { int option = 1; changePanel(option); } private void changePanel(int optionIn) { gamePanel.Hide(); scoreboardPanel.Hide(); string title = "Football League System"; switch (optionIn) { case 0: gamePanel.Show(); this.Text = title + " - Game Menu"; break; case 1: scoreboardPanel.Show(); this.Text = title + " - Display Menu"; break; } } private void logoutButton_Click(object sender, EventArgs e) { login = new Login(); login.Show(); this.Hide(); } private void addGameButton_Click(object sender, EventArgs e) { if ((homeTeamTxt.Text.Length) == 0) MessageBox.Show("You must enter a Home Team"); else if (homeScoreUpDown.Value > 9 || homeScoreUpDown.Minimum < 0) MessageBox.Show("You must enter one digit between 0 and 9"); else if ((awayTeamTxt.Text.Length) == 0) MessageBox.Show("You must enter a Away Team"); else if (homeScoreUpDown.Value > 9 || homeScoreUpDown.Value < 0) MessageBox.Show("You must enter one digit between 0 to 9"); else { //checkGameInputFields(); game = new Game(homeTeamTxt.Text, int.Parse(homeScoreUpDown.Value.ToString()), awayTeamTxt.Text, int.Parse(awayScoreUpDown.Value.ToString())); MessageBox.Show("Home Team -" + '\t' + homeTeamTxt.Text + '\t' + "and" + '\r' + "Away Team -" + '\t' + awayTeamTxt.Text + '\t' + "created"); footballLeagueDatabase.AddGame(game); //clearCreateStudentInputFields(); } } private void timer1_Tick(object sender, EventArgs e) { displayDateAndTime(); } private void displayDateAndTime() { dateLabel.Text = DateTime.Today.ToLongDateString(); timeLabel.Text = DateTime.Now.ToShortTimeString(); } private void displayResultsButton_Click(object sender, EventArgs e) { Game game = new Game(homeTeamTxt.Text, int.Parse(homeScoreUpDown.Value.ToString()), awayTeamTxt.Text, int.Parse(awayScoreUpDown.Value.ToString())); gameResultsListView.Items.Clear(); gameResultsListView.View = View.Details; ListViewItem row = new ListViewItem(); row.SubItems.Add(game.HomeTeam.ToString()); row.SubItems.Add(game.HomeScore.ToString()); row.SubItems.Add(game.AwayTeam.ToString()); row.SubItems.Add(game.AwayScore.ToString()); gameResultsListView.Items.Add(row); } private void displayGamesButton_Click(object sender, EventArgs e) { Game game = new Game("Home", 2, "Away", 4);//homeTeamTxt.Text, int.Parse(homeScoreUpDown.Value.ToString()), awayTeamTxt.Text, int.Parse(awayScoreUpDown.Value.ToString())); modifyGamesListView.Items.Clear(); modifyGamesListView.View = View.Details; ListViewItem row = new ListViewItem(); row.SubItems.Add(game.HomeTeam.ToString()); row.SubItems.Add(game.HomeScore.ToString()); row.SubItems.Add(game.AwayTeam.ToString()); row.SubItems.Add(game.AwayScore.ToString()); modifyGamesListView.Items.Add(row); } } } This is the whole code and I got same error like previous question. Unhandled Exception has occurred in you application.If you click...............click Quit.the application will close immediately. Object reference not set to an instance of an object. And the following details are in the error message. ***** Exception Text ******* System.NullReferenceException: Object reference not set to an instance of an object. at FoolballLeague.MainMenu.addGameButton_Click(Object sender, EventArgs e) in C:\Users\achini\Desktop\FootballLeague\FootballLeague\MainMenu.cs:line 91 at System.Windows.Forms.Control.OnClick(EventArgs e) at System.Windows.Forms.Button.OnMouseUp(MouseEventArgs mevent) at System.Windows.Forms.Control.WmMouseUp(Message& m, MouseButtons button, Int32 clicks) at System.Windows.Forms.Control.WndProc(Message& m) at System.Windows.Forms.ButtonBase.WndProc(Message& m) at System.Windows.Forms.Button.WndProc(Message& m) at System.Windows.Forms.Control.ControlNativeWindow.WndProc(Message& m) at System.Windows.Forms.NativeWindow.Callback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam) I need to add the games to using the addGameButton and the save those added games and display them in the list view (gameResultsListView). Now I can add a game and display in the list view.But when I pressed the button addGameButton I got the above error message. If you can please give me a solution to this problem.

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  • Python - List of Lists Slicing Behavior

    - by Dan Dobint
    When I define a list and try to change a single item like this: list_of_lists = [['a', 'a', 'a'], ['a', 'a', 'a'], ['a', 'a', 'a']] list_of_lists[1][1] = 'b' for row in list_of_lists: print row It works as intended. But when I try to use list comprehension to create the list: row = ['a' for range in xrange(3)] list_of_lists = [row for range in xrange(3)] list_of_lists[1][1] = 'b' for row in list_of_lists: print row It results in an entire column of items in the list being changed. Why is this? How can I achieve the desired effect with list comprehension?

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  • Insert multiple records from a XML string differing on one parameter in SQL SERVER 2008

    - by Rohit
    Below in a query which inserts records to SimpleDictationProfileMapping table after reading it from a XML string. Now this query inserts a single record in which DictationCaptureProfileID is @dictationCaptureProfileId . Now i want to insert multiple rows in which @dictationCaptureProfileId is different and other 2 values are same. What i want to achieve by this is in case parent changes all child values should also change. INSERT INTO SimpleDictationProfileMapping ( DictationCaptureProfileID, DictationProfileMappingAttributeID, DictationProfileMappingAttributeValue ) SELECT @dictationCaptureProfileId, row.value('@attrId','varchar(max)'), row.value('@value', 'varchar(max)') FROM @simpleDictationCaptureProfileMappings.nodes('/simpleMappingAtribute/attribute') AS d ( row ) ; I want INSERT INTO SimpleDictationProfileMapping ( DictationCaptureProfileID OR (SELECT DictationCaptureProfileID FROM DictationCaptureProfile WHERE SystemDictationCaptureProfileID = @systemDictationCaptureProfileID), DictationProfileMappingAttributeID, DictationProfileMappingAttributeValue ) SELECT @dictationCaptureProfileId , row.value('@attrId','varchar(max)'), row.value('@value', 'varchar(max)') FROM @simpleDictationCaptureProfileMappings.nodes ('/simpleMappingAtribute/attribute') AS d ( row ) ; Please tell how to achieve this.

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  • Is it possible to combine these 3 mySQL queries?

    - by Greenie
    I know the $downloadfile - and I want the $user_id. By trial and error I found that this does what I want. But it's 3 separate queries and 3 while loops. I have a feeling there is a better way. And yes, I only have a very little idea about what I'm doing :) $result = pod_query("SELECT ID FROM wp_posts WHERE guid LIKE '%/$downloadfile'"); while ($row = mysql_fetch_assoc($result)) { $attachment = $row['ID']; } $result = pod_query("SELECT pod_id FROM wp_pods_rel WHERE tbl_row_id = '$attachment'"); while ($row = mysql_fetch_assoc($result)) { $pod_id = $row['pod_id']; } $result = pod_query("SELECT tbl_row_id FROM wp_pods_rel WHERE tbl_row_id = '$pod_id' AND field_id = '28'"); while ($row = mysql_fetch_assoc($result)) { $user_id = $row['pod_id']; }

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