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• Like query ing LINQ to Object

  - by Pankaj

  Hello All i have a US states list List<string> state // contain all 51 US states Now i have a string which contain some text like okl (it means Oklahoma for me). what i want i want 'like' query in List state and get Oklahoma state.

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• Why does javac complain about not initialized variable?

  - by Marcus

  For this Java code: String var; clazz.doSomething(var); Why does the compiler report this error: Variable 'var' might not have been initialized I thought all variables or references were initialized to null. Why do you need to do: String var = null; ??

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• What is a way to fill a multiline editbox with line of text.

  - by Smoka

  What im after is a greyed out editbox, like a results box. Im having problems having the text properly formatted. so starting fromm scratch, how is it usually done? one big long string with line breaks? having the code input one line at a time as a string?

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• How to handle choice field with JPA 2, Hibernate 3.5

  - by phmr

  I have an entity with Integer attributes that looks like this in proto code: class MyEntity: String name Integer frequency Integer type def getFrequency() def getType() get* accessors return strings according to this table. value(type) HumanReadableString(type) 1 BSD 2 Apache 3 GPL min frequency max frequency HumanReadableString(frequency) 0 1000 rare 1000 2000 frequent 2001 3000 sexy It should be possible to get all possible values that an attribute can take, example: getChoices(MyEntity, "type") returns ("rare", "frequent", "sexy") It should be possible to get the bound value from the string: getValue(MyEntity, "frequency", "sexy") returns (2000,3000)

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• Base32 Decoding

  - by trampster

  I have a base32 string which I need to convert to a byte array. And I'm having trouble finding a conversion method in the .net framework. I can find methods for base64 but not for base32. Convert.FromBase64String – something like this for base32 would be perfect. Is there such a method in the framework or do I have to roll my own?

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• [C#] Problems with implementing generic IEnumerator and IComparable

  - by r0h

  Hi all! I'm working on an AVL Tree. The tree itself seems to be working but I need a iterator to walk through the values of the tree. Therefore I tried to implement the IEnumerator interace. Unfortunately I get a compile time error implementing IEnumerator and IComparable. First the code and below that the error. class AvlTreePreOrderEnumerator<T> : IEnumerator<T> where T :IComparable<T> { private AvlTreeNode<T> current = default(T); private AvlTreeNode<T> tree = null; private Queue<AvlTreeNode<T>> traverseQueue = null; public AvlTreePreOrderEnumerator(AvlTreeNode<T> tree) { this.tree = tree; //Build queue traverseQueue = new Queue<AvlTreeNode<T>>(); visitNode(this.tree.Root); } private void visitNode(AvlTreeNode<T> node) { if (node == null) return; else { traverseQueue.Enqueue(node); visitNode(node.LeftChild); visitNode(node.RightChild); } } public T Current { get { return current.Value; } } object IEnumerator.Current { get { return Current; } } public void Dispose() { current = null; tree = null; } public void Reset() { current = null; } public bool MoveNext() { if (traverseQueue.Count > 0) current = traverseQueue.Dequeue(); else current = null; return (current != null); } } The error given by VS2008: Error 1 The type 'T' cannot be used as type parameter 'T' in the generic type or method 'Opdr2_AvlTreeTest_Final.AvlTreeNode'. There is no boxing conversion or type parameter conversion from 'T' to 'System.IComparable'. For now I've not included the tree and node logic. I anybody thinks is necessary to resolve this probleem, just say so! Thx!

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• Extracting the hyperlink value from an excel cell using asp.net

  - by beytz

  Hi, I'm reading an excel file using oledb in my asp.net code (vb). I have no problem going over the data but in one of the cells there is a string that "hides" a hyperlink. I want that hyperlink and not the string... Any ideas? Thanks

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• add color style to value based on condition

  - by rod

  Hi All, How do I conditionally add the style 'color:red' to the .CurrentDifference if the value happens to be a negative value? Thanks, rod. <div class="sRow"> <div class="sLabel p40"> Difference: </div> <%= (!String.IsNullOrEmpty(Model.Amount)?Model.Amount.CurrentDifference.ToString("c"):string.Empty) %> </div>

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• Passing a Dictionary to WCF service

  - by Sandeep

  I need to pass a Dictionary (with max 20,000 entries) to a WCF service. Can I pass it all by once? void SubmitDictionary(Dictionary<string, MyEntry> val); where MyEntry is : class MyEntry { string Name; long Age; } Is there a configuration for size of the value passed? or can we pass as large data as this?

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• GUI and Threading

  - by cam

  Isn't there a better way to handle GUI (WinForms) from another thread than creating a delegate for every single method I need to use? It seems like there would be a better way. Here's the current code I use for every single GUI method: private delegate void SetStatusTextDelegate(string set_text); public void SetStatusText(string set_text) { if (status_prog.InvokeRequired) { status_prog.Invoke(new SetStatusTextDelegate(SetStatusText), set_text); } else { status_prog.Text = set_text; } }

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• Set Jtable/Column Renderer for booleans

  - by twodayslate

  Right now my Boolean values for my JTable display as JCheckBoxes. This would normally be fine but I would like to display them as either an alternative String or image. I can get them to display as true/false but I would like to display them as a checkmark (?) if true and nothing if false. Possibly an image but lets do a String first...

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• Comparing Arrays using LINQ in C#

  - by Pramodh

  hi, i've two arrays like string[] a = { "a", "b", "c" }; string[] b = { "a", "b", "c" }; i need to compare the two arrays using linq. the comparision should take place only if both arrays have same size

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• System.Drawing.Image as source for asp.net image container

  - by trnTash

  I created image from byte array System.Drawing.Image newImage; using (MemoryStream ms = new MemoryStream(imageBytes, 0, imageBytes.Length)) { ms.Write(imageBytes, 0, imageBytes.Length); newImage = System.Drawing.Image.FromStream(ms, true); } and now I need to have this image as a source for asp:Image (System.Web.UI.WebControls.Image). Is this possible as I know that conversion is impossible?

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• What's the difference between casting using (Object as TClass) and TClass(Object)

  - by Peter Turner

  Got an issue where MyObj.classnameis(TMyClass.classname) is true and TMyClass(MyObj) works but (MyObj as TMyclass).doSomething throws a conversion error. I don't really want any help with that junk, although if you want to put it in the comments that'd be super. I just would like to know what the difference between Obj As Class and Class(Obj) is.

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• null from C# getting converted into 'NULL' in Sql Server

  - by Anand

  I am trying to insert NULL value in Sql Server if I have null value in corresponding C# String object like below : String Residence = xmlDoc.Descendants("Appointment").Single().Element("StateOfResidence") == null ? null : xmlDoc.Descendants("Appointment").Elements("StateOfResidence").Single().Value; I am using Entity framework for Database access. So if Residence is null, 'NULL' gets inserted into Database instead of NULL. How can insert NULL for null ?

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• Scanned value(using scanner) in the textbox

  - by Geetha

  Hi All, I am using Scanner(basic model) to scan the barcode. Scanned barcode will be captured in a textbox. In txtBarcode_TextChanged event i am getting the barcode to access. Problem: If i clicked the scanner more than once, the barcode gets append with the previous value. Code: protected void txtBarcode_TextChanged(object sender, EventArgs e) { string txt = this.txtBarcode.Text; this.txtBarcode.Text = string.Empty; }

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• regEx pattern for checking if sting starts with a certain substring?

  - by kacalapy

  whats the regEx to check if a sting starts with "mailto" or "ftp" or "joe" or... now i am using c# and code like this in a bif if with many OR's: String.StartsWith("mailto:") String.StartsWith("ftp") and looks like regEx would be better for this, or is there a c# way i am missing here?

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• Find last match with python regular expression

  - by SDD

  I wanto to match the last occurence of a simple pattern in a string, e.g. list = re.findall(r"\w+ AAAA \w+", "foo bar AAAA foo2 AAAA bar2) print "last match: ", list[len(list)-1] however, if the string is very long, a huge list of matches is generated. Is there a more direct way to match the second occurence of "AAAA" or should I use this workaround?

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• asp.net c# ip address lost after postback?

  - by Mark

  Hi all, One of my functions in a class is called GetIpAddress() which returns the following string: System.Web.HttpContext.Current.Request.ServerVariables["REMOTE_ADDR"] This all works well in regular page loads and gets my ip address, but when i for example let a user place a comment, then the ip address is lost after postback and i get an empty string returned. Am I missing something here maybe? Kind regards, Mark

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• Silverlight : How to pass data from the reqest to the respose using Webclient Asychronous mode ?

  - by user318332

  This is probably a basic question .. void method1() { String VIP = "test"; WebClient proxy = new WebClient(); proxy.OpenReadCompleted += new OpenReadCompletedEventHandler(proxy_OpenReadCompleted); String urlStr = "someurl/lookup?q=" + keyEntityName + "&fme=1&edo=1&edi=1"; } void proxy_OpenReadCompleted(object sender, OpenReadCompletedEventArgs e) { } I need to access VIP in the proxy_OpenReadCompleted method. Pl. help

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• How to obtain The Oracle Package name from a Crystal Report file using .NET code

  - by eschneider

  I'm trying to obtain the Oracle package name used for a Crystal report data source using .NET code. I have obtained the procedure name, but for some reason I can not find the package name. Dim rpt as new ReportDocument rpt.Load(filename) Dim procedureName As String = rpt.Database.Tables.Item(0).Location Dim DataSourceAliasName As String = rpt.Database.Tables.Item(0).Name Currently using .NET Crystal Decisions version: 10.5.3700.0

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• How to render or hide a jsf subview based on a method call (which returns boolean)?

  - by jsfQ

  I have a context loader class which loads an XML file with info on which components to show or hide on a page. On the JSP pages, within the 'rendered' attribute for a subView,, I would like to make a call to ContextLoader.displayPageComponent(String pageId, String componentId) which returns a boolean. Does this work in JSF? If not, is there another way to achieve the same?

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• What is the php syntax for a REGEXP that changes "Last, First" into "Last..First"?

  - by ggg

  I need to create a php search function for names and need to change LastName, FirstName into LastName..FirstName to search the database. I don't know if this helps, but the string will originally be in the form a variable ($Client). I need the syntax for the three statements that find the string, matches, and makes the changes.

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• writing a Simplest XML DeSerialization class for the simplest xml file. How to avoid the nesting? de

  - by Enggr

  Hi, I want to deserialize an xml file which has to be just in this form <Basket> <Fruit>Apple</Fruit> <Fruit>Orange</Fruit> <Fruit>Grapes</Fruit> </Basket> Out of the examples I read on internet the least possible format I could find was the following <Basket> <FruitArray> <Fruit>Apple</Fruit> </FruitArray> <FruitArray> <Fruit>Orange</Fruit> </FruitArray> <FruitArray> <Fruit>Grapes</Fruit> </FruitArray> </Basket> and that has the following deserialization class for converting it into a class object. using System; using System.Collections.Generic; using System.Linq; using System.Text; namespace XMLSerialization_Basket { [System.Xml.Serialization.XmlRootAttribute("Basket", Namespace = "BasketNamespace", IsNullable = false)] public class Basket { /// <remarks/> [System.Xml.Serialization.XmlElementAttribute("FruitArray")] public FruitArray[] objFruitArray; } /// <remarks/> [System.Xml.Serialization.XmlTypeAttribute(Namespace = "BasketNamespace")] public class FruitArray { /// <remarks/> private string _Fruit; public string Fruit { get { return _Fruit; } set { _Fruit = value; } } } } Can I add something like the following directly under top class private string _Fruit; public string Fruit { get { return _Fruit; } set { _Fruit = value; } } and avoid the array nesting? my goal is to deserialize an xml of following format <Basket> <Fruit>Apple</Fruit> <Fruit>Orange</Fruit> <Fruit>Grapes</Fruit> </Basket>

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• preg_replace on xss code

  - by proyb2

  Can this code help to sanitize malicious code in user submit form? function rex($string) { $patterns = array(); $patterns[0] = '/=/i'; $patterns[1] = '/javascript:/i'; $replacements = array(); $replacements[0] = ''; $replacements[1] = ''; return preg_replace($patterns, $replacements, $string); I have included htmlentities() to prevent XSS on client side, is all the code shown is safe enough to prevent attack?

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