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  • Casting complex class into a dataset?

    - by iTayb
    This is the class I'm trying to turn into a dataset: public class BookStore { private List<Book> booksList; } public class Book { private string name; private string imageurl; private string subject; private string author; private int level; private int year; private int rating; private List<string> booksellers; private List<decimal> bookprices; } There are proprieties, of course. How can I turn it into a dataset? Thank you very much.

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  • Syntax error in INSERT INTO statement in c# oledb?

    - by sameer
    I am having a table called SubMaster_Accounts, which contains 9 fields. In which I want to insert data to some fields and i want to store some other fields as NULL. I tried to write the query using query string, The sql query works perfectly when i insert the data for all the fields, but when i insert data as NULL to some of the fields it shows syntax error in Insert command. The fields which i want to insert as NULL are not constraints. How can i do it? This is my query string. insert into SubMaster_Account ([SMcode], [MSname], [Sname], [Openbalrs], [Openbalrs1], [Openbalmet], [Openbalmet1], [Creditdays], [Sdesc]) values ('" + SMcode + "','" + MSname + "','" + Sname + "'," + Openbalrs + ",'" + Openbalrs1 + "'," + Openbalmet + ",'" + Openbalmet1 + "'," + Creditdays + ",'" + Sdesc + "')

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  • How to send data many times to web browser in response to one request?

    - by robert_d
    I have a form on my web page, it allows to submit many queries to my website, every query is on a separate line in TextArea. Because waiting for all queries to complete is too long I would like to update the web page after every query completes - send result of one query to a web browser, new result should be appended to old results that are already on the web page. How to do this in ASP.NET MVC 2? I will be grateful for helpful responses.

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  • loop for Cursor1.moveToPosition() in android

    - by Edward Sullen
    I want to get data in the first column of all row from my database and convert to String[] ... List<String> item1 = new ArrayList<String>(); // c is a cursor which pointed from a database for(int i=0;i<=nombre_row;i++) { c.moveToPosition(i); item1.add(c.getString(0)); } String[] strarray = new String[item1.size()]; item1.toArray(strarray ); I've tried to command step by step, and found that the problem is in the Loop for.... Please help... thanks in advance for all answer.

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  • suppose there is a class which contains 4 data fields.i have to read these value from xml file and s

    - by SunilRai86
    suppose there is a class which contains 4 fields.i have to read these value from xml file and set that value to fields the xml file is like that <Root> <Application > <AppName>somevalue</AppName> <IdMark>somevalue</IdMark> <ClassName>ABC</ClassName> <ExecName>XYZ</ExecName> </Application> <Application> <AppName>somevalue</AppName> <IdMark>somevalue</IdMark> <ClassName>abc</ClassName> <ExecName>xyz</ExecName> </Application> </Root> now i have to read all the values from xml file and set each value to particular fields. i hav done reading of the xml file and i saved the retrieved value in arraylist. the code is like that public class CXmlFileHook { string appname; string classname; string idmark; string execname; string ctor; public CXmlFileHook() { this.appname = "Not Set"; this.idmark = "Not Set"; this.classname = "Not Set"; this.execname = "Not Set"; this.ctor = "CXmlFileHook()"; } public void readFromXmlFile(string path) { XmlTextReader oRreader = new XmlTextReader(@"D:\\Documents and Settings\\sunilr\\Desktop\\MLPACK.xml"); //string[] strNodeValues = new string[4] { "?","?","?","?"}; ArrayList oArrayList = new ArrayList(); while (oRreader.Read()) { if (oRreader.NodeType == XmlNodeType.Element) { switch (oRreader.Name) { case "AppName": oRreader.Read(); //strNodeValues[0] =oRreader.Value; oArrayList.Add(oRreader.Value); break; case "IdMark": oRreader.Read(); //strNodeValues[1] = oRreader.Value; oArrayList.Add(oRreader.Value); break; case "ClassName": oRreader.Read(); //strNodeValues[2] = oRreader.Value; oArrayList.Add(oRreader.Value); break; case "ExecName": oRreader.Read(); //strNodeValues[3] = oRreader.Value; oArrayList.Add(oRreader.Value); break; } } } Console.WriteLine("Reading from arraylist"); Console.WriteLine("-------------------------"); for (int i = 0; i < oArrayList.Count; i++) { //Console.WriteLine("Reading from Sting[]"+ strNodeValues[i]); Console.WriteLine(oArrayList[i]); } //this.appname = strNodeValues[0]; //this.idmark = strNodeValues[1]; //this.classname = strNodeValues[2]; //this.execname = strNodeValues[3]; this.appname = oArrayList[0].ToString(); this.idmark = oArrayList[1].ToString(); this.classname = oArrayList[2].ToString(); this.execname = oArrayList[3].ToString(); } static string vInformation; public void showCurrentState(string path) { FileStream oFileStream = new FileStream(path, FileMode.Append, FileAccess.Write); StreamWriter oStreamWriter = new StreamWriter(oFileStream); oStreamWriter.WriteLine("****************************************************************"); oStreamWriter.WriteLine(" Log File "); oStreamWriter.WriteLine("****************************************************************"); CXmlFileHook oFilehook = new CXmlFileHook(); //Type t = Type.GetType(this._classname); //Type t = typeof(CConfigFileHook); DateTime oToday = DateTime.Now; vInformation += "Logfile created on : "; vInformation += oToday + Environment.NewLine; vInformation += "Public " + Environment.NewLine; vInformation += "----------------------------------------------" + Environment.NewLine; vInformation += "Private " + Environment.NewLine; vInformation += "-----------------------------------------------" + Environment.NewLine; vInformation += "ctor = " + this.ctor + Environment.NewLine; vInformation += "appname = " + this.appname + Environment.NewLine; vInformation += "idmark = " + this.idmark + Environment.NewLine; vInformation += "classname = " + this.classname + Environment.NewLine; vInformation += "execname = " + this.execname + Environment.NewLine; vInformation += "------------------------------------------------" + Environment.NewLine; vInformation += "Protected" + Environment.NewLine; vInformation += "------------------------------------------------" + Environment.NewLine; oStreamWriter.WriteLine(vInformation); oStreamWriter.Flush(); oStreamWriter.Close(); oFileStream.Close(); } } here i set set the fields according to arraylist index but i dont want is there any another solution for this....

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  • replace \n and \r\n with <br /> in java

    - by Bala R
    This has been asked several times for several languages but I can't get it to work. I have a string like this String str = "This is a string.\nThis is a long string."; And I'm trying to replace the \n with <br /> using str = str.replaceAll("(\r\n|\n)", "<br />"); but the \n is not getting replaced. I tried to use this RegEx Tool to verify and I see the same result. The input string does not have a match for "(\r\n|\n)". What am i doing wrong ?

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  • Are multiline queries sql-injection safe?

    - by acmatos
    This might be a stupid question. Or maybe my hacking skills are limited (I don't practice them at all). I have a query that looks like this: <?php $query =<<<eot SELECT table_x.field1, table_x.field2, table_y.*, table_z.field4 FROM ( SELECT ... ) as table_y LEFT JOIN table_x ON table_x.field1 = table_y.field_x LEFT JOIN table_z ON table_z.field1 = table_y.field_z WHERE table_x.field3 = '$something' AND table_z.field4 = '1' AND table_z.field5 = '2' eot; ?> I have a lot of other tests on $something before it gets used, like $something = explode(' ',$something); (which later result in a string) none of them intend to prevent injection but they make it hard for the given injection to get as is to the actual query. However, there are ways. We all know how easy it is to replace a space for something else which is still valid.. So, it's not really a problem to make a potentially harmful piece of SQL reach that $something... But is there any way to comment the rest of the original query string if it is multi-line? I can comment AND table_z.field4 = '1' using ;-- but can't comment the following AND table_z.field5 = '2' Is it possible to open a multi-line comment /* without closing it or something looked like and therefore allow the injection to ignore the multi-line query?

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  • Passing parameters among views in a navigation frame INSIDE a custom control

    - by NetWriter
    I created a silverlight 3 application with a navigation frame and 3 views: search, add and edit. I used the app file to pass parameters among the 3 pages, eg: ((App)Application.Current).SNIPSELECTED = currentSnip; Then in the receiving page: currentSnip = ((App)Application.Current).SNIPSELECTED; currentSnip is a SnipItem object: public class SnipItem { public string itemID {get;set;} public string category {get;set;} public string itemDescription {get;set;} public string codeSnip {get;set;} } This worked fine until I decided to make this entire application into a user control and put that inside a second silverlight application with its own navigation frame and app file. The app files are getting confused. The first app file with all my parameter passing is not being read. I know how to pass a simple parameter between views in the first application without the app file (in a query string), but how about these custom types like my currentSnip above?

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  • Why does this MSDN example for Func<> delegate have a superfluous Select() call?

    - by Dan
    The MSDN gives this code example in the article on the Func Generic Delegate: Func<String, int, bool> predicate = ( str, index) => str.Length == index; String[] words = { "orange", "apple", "Article", "elephant", "star", "and" }; IEnumerable<String> aWords = words.Where(predicate).Select(str => str); foreach (String word in aWords) Console.WriteLine(word); I understand what all this is doing. What I don't understand is the Select(str => str) bit. Surely that's not needed? If you leave it out and just have IEnumerable<String> aWords = words.Where(predicate); then you still get an IEnumerable back that contains the same results, and the code prints the same thing. Am I missing something, or is the example misleading?

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  • mysql result for pagination

    - by Reteras Remus
    The query is: SELECT * FROM `news` ORDER BY `id` LIMIT ($curr_page * 5), ( ($curr_page * 5) + 5 ) Where $curr_page is a php variable which is getting a value from $_GET['page'] I want to make a pagination (5 news on each page), but I don't know why the mysql is returning me extra values. On the first page the result ok: $curr_page = 0 The query would be: SELECT * FROM `news` ORDER BY `id` LIMIT 0, 5 But on the second page, the result from the query is adding extra news, 10 instead of 5. The query on the second page: SELECT * FROM `news` ORDER BY `id` LIMIT 5, 10 Whats wrong? Why the result has 10 values instead of 5? Thank you!

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  • PHP mysql_fetch does not return values

    - by Petr
    Hi, Being quite new with PHP, I cannot find any solution why this does not work. The query is OK and the resource is returned. But I dunno why fetch_assoc does not print values. Thanks $query=sprintf("SELECT ID,NAME FROM USERS WHERE PASS='%s' AND NAME='%s'",mysql_real_escape_string($p),mysql_real_escape_string($n)); $result=mysql_query($query); if ($result) { while ($row = mysql_fetch_assoc($result)) { echo $row['ID']; echo $row['NAME']; } } }

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  • Generic Dictionary - Getting Conversion Error

    - by pm_2
    The following code is giving me an error: // GetDirectoryList() returns Dictionary<string, DirectoryInfo> Dictionary<string, DirectoryInfo> myDirectoryList = GetDirectoryList(); // The following line gives a compile error foreach (Dictionary<string, DirectoryInfo> eachItem in myDirectoryList) The error it gives is as follows: Cannot convert type 'System.Collections.Generic.KeyValuePair<string,System.IO.DirectoryInfo>' to 'System.Collections.Generic.Dictionary<string,System.IO.DirectoryInfo>’ My question is: why is it trying to perform this conversion? Can I not use a foreach loop on this type of object?

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  • Problem in populating a dictionary object using Enumerable.Range() (C#3.0)

    - by Newbie
    If I do for (int i = 0; i < appSettings.Count; i++) { string key = appSettings.Keys[i]; euFileDictionary.Add(key, appSettings[i]); } It is working fine. When I am trying the same thing using Enumerable.Range(0, appSettings.Count).Select(i => { string Key = appSettings.Keys[i]; string Value = appSettings[i]; euFileDictionary.Add(Key, Value); }).ToDictionary<string,string>(); I am getting a compile time error The type arguments for method 'System.Linq.Enumerable.Select(System.Collections.Generic.IEnumerable, System.Func)' cannot be inferred from the usage. Try specifying the type arguments explicitly. Any idea? Using C#3.0 Thanks

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  • NSString inheritance

    - by Stef
    Hi, I'm doing an useless thing for my first step in Obj-C @interface String : NSString { int m_isnull; } - (id) init; - (int) isNull; @end @implementation String - (id) init { self = [super init]; m_isnull=1; return self; } - (int) isNull { return m_isnull; } @end test : String *a; a=@"ok"; Works fine, but just 2 little questions 1) When I'm compiling I have this warning warning: incompatible Objective-C types assigning 'struct NSString *', expected 'struct String *' I don't know how to avoid it !? 2) a=@"ok" is a fastest way to initialize a string, but when I'm debugging, I don't stop by at my init constructor why ?

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  • select distinct over specific columns

    - by Midhat
    A query in a system I maintain returns QID AID DATA 1 2 x 1 2 y 5 6 t As per a new requirement, I do not want the (QID, AID)=(1,2) pair to be repeated. We also dont care what value is selected from "data" column. either x or y will do. What I have done is to enclose the original query like this SELECT * FROM (<original query text>) Results group by QID,AID Is there a better way to go about this? The original query uses multiple joins and unions and what not, So I would prefer not to touch it unless its absolutely necesary

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  • PHP/MySQL Problem

    - by Scott
    Why does this only print the sites specific content under the first site, and doesn't do it for the other 2? <?php echo 'NPSIN Data will be here soon!'; // connect to DB $dbhost = 'localhost'; $dbuser = 'root'; $dbpass = 'root'; $conn = mysql_connect($dbhost, $dbuser, $dbpass) or die ('Error connecting to DB'); $dbname = 'npsin'; mysql_select_db($dbname); // get number of sites $query = 'select count(*) from sites'; $result = mysql_query($query) or die ('Query failed: ' . mysql_error()); $resultArray = mysql_fetch_array($result); $numSites = $resultArray[0]; echo "<br><br>"; // get all sites $query = 'select site_name from sites'; $result = mysql_query($query); // get site content $query2 = 'select content_name, site_id from content'; $result2 = mysql_query($query2); // get site files // print info $count = 1; while ($row = mysql_fetch_array($result, MYSQL_NUM)) { echo "Site $count: "; echo "$row[0]"; echo "<br>"; $contentCount = 1; while ($row2 = mysql_fetch_array($result2, MYSQL_NUM)) { $id = $row2[1]; if ($id == ($count - 1)) { echo "Content $contentCount: "; echo "$row2[0]"; echo "<br>"; } $contentCount++; } $count++; } ?>

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  • Querying Postgresql with a very large result set

    - by sanity
    In an application I need to query a Postgres DB where I expect tens or even hundreds of millions of rows in the result set. I might do this query once a day, or even more frequently. The query itself is relatively simple, although may involve a few JOINs. My question is: How smart is Postgres with respect to avoiding having to seek around the disk for each row of the result set? Given the time required for a hard disk seek, this could be extremely expensive. If this isn't an issue, how does Postgres avoid it? How does it know how to lay out data on the disk such that it can be streamed out in an efficient manner in response to this query?

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  • SQLite3 database doesn't actually insert data - iPhone

    - by user334934
    I'm trying to add a new entry into my database, but it's not working. There are no errors thrown, and the code that is supposed to be executed after the insertion runs, meaning there are no errors with the query. But still, nothing is added to the database. I've tried both prepared statements and the simpler sqlite3_exec and it's the same result. I know my database is being loaded because the info for the tableview (and subsequent tableviews) are loaded from the database. The connection isn't the problem. Also, the log of the sqlite3_last_insert_rowid(db) returns the correct number for the next row. But still, the information is not saved. Here's my code: db = [Database openDatabase]; NSString *query = [NSString stringWithFormat:@"INSERT INTO lists (name) VALUES('%@')", newField.text]; NSLog(@"Query: %@",query); sqlite3_stmt *statement; if (sqlite3_prepare_v2(db, [query UTF8String], -1, &statement, nil) == SQLITE_OK) { if(sqlite3_step(statement) == SQLITE_DONE){ NSLog(@"You created a new list!"); int newListId = sqlite3_last_insert_rowid(db); MyList *newList = [[MyList alloc] initWithName:newField.text idNumber:[NSNumber numberWithInt:newListId]]; [self.listArray addObject:newList]; [newList release]; [self.tableView reloadData]; sqlite3_finalize(statement); } else { NSAssert1(0, @"Error while inserting data. '%s'", sqlite3_errmsg(db)); } } [Database closeDatabase:db]; Again, no errors have been thrown. The prepare and step statements return SQLITE_OK and SQLITE_DONE respectively, yet nothing happens. Any help is appreciated!

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  • Normalizing Strings using Regexes

    - by RasputinJones
    How do I match this string "1 & 2" from this string "Foo Bar 1 & 2"? How do I match this string "1, 2 & 3" from this string "Foo Baz 1, 2 & 3"? Trying to split out "Foo Bar" from the string using regexes while using the presence of "1 & 2" or "1, 2 & 3" as conditionals to normalize these strings into "Foo Bar 1" and "Foo Bar 2" or "Foo Baz 1", "Foo Baz 2" and "Foo Baz 3" respectively.

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  • Splitting Nucleotide Sequences in JS with Regexp

    - by TEmerson
    I'm trying to split up a nucleotide sequence into amino acid strings using a regular expression. I have to start a new string at each occurrence of the string "ATG", but I don't want to actually stop the first match at the "ATG". Valid input is any ordering of a string of As, Cs, Gs, and Ts. For example, given the input string: ATGAACATAGGACATGAGGAGTCA I should get two strings: ATGAACATAGGACATGAGGAGTCA (the whole thing) and ATGAGGAGTCA (the first match of "ATG" onward). A string that contains "ATG" n times should result in n results. I thought the expression /(?:[ACGT]*)(ATG)[ACGT]*/g would work, but it doesn't. If this can't be done with a regexp it's easy enough to just write out the code for, but I always prefer an elegant solution if one is available.

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  • JDBC Pagination

    - by Zeeshan
    Hi, I want to implement pagination using JDBC. The actual thing I want to know is "How can i get first 50 and then next 50 records from database for page 1 and 2 respectively" My Query is Select * from data [data table contains 20,000 rows] For page #1 I get 50 records and for page #2 I want to get next 50 records. How can I implement it efficiently in JDBC? I have searched and found that rs.absolute(row) is the way to skip first page records but it takes some amount of time on large result sets and I don't want to bear this amount of time. Also, I don't want to use rownum and limit + offset in query because these are not good to use in query, I dont know why, still I don't want to use it in query. Can anyone help me how to get limited ResultSet for pagination or is there any way JDBC is giving us?

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  • Can't figure out what's wrong with my php/sql statement

    - by Olegious
    So this is probably a dumb beginner question, but I've been looking at it and can't figure it out. A bit of background: just practicing making a web app, a form on page 1 takes in some values from the user, posts them to the next page which contains the code to connect to the DB and populate the relevant tables. I establish the DB connection successfully, here's the code that contains the query: $conn->query("SET NAMES 'utf9'"); $query_str = "INSERT INTO 'qa'.'users' ('id', 'user_name','password' ,'email' ,'dob' ,'sx') VALUES (NULL, $username, $password, $email, $dob, $sx);"; $result = @$conn->query($query_str); Here's the error that is returned:Insert query failed: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near ''qa'.'users' ('id', 'user_name' ,'password' ,'email' ,'dob' ,'s' at line 1 Thanks in advance!

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  • jQuery: Writing jquery in an object oriented way

    - by anoopkattodi
    Hi all, I am trying to write all my query code in an object oriented way. But I don't know how to implement this for each click function and hover function etc. I also wanted to know: What are the advantages of writing query in object oriented way? For query what is better the object oriented way or in the ordinary way?

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  • How to validate phone number(US format) in Java?

    - by Maxood
    I just want to know where am i wrong here: import java.io.*; class Tokens{ public static void main(String[] args) { //String[] result = "this is a test".split(""); String[] result = "4543 6546 6556".split(""); boolean flag= true; String num[] = {"0","1","2","3","4","5","6","7","8","9"}; String specialChars[] = {"-","@","#","*"," "}; for (int x=1; x<result.length; x++) { for (int y=0; y<num.length; y++) { if ((result[x].equals(num[y]))) { flag = false; continue; } else { flag = true; } if (flag == true) break; } if (flag == false) break; } System.out.println(flag); } }

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