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  • How to split string in group in vb.net

    - by amol kadam
    Hi. i'm amol kadam,I want to know how to split string in two part.My string is in Time format (12:12).& I want to seperate this in hour & minute format.the datatype for all variables are string. for hour variable used strTimeHr & for minute strTimeMin .I tried below code but their was a exception "Index and length must refer to a location within the string. Parameter name: length" If Not (objDS.Tables(0).Rows(0)("TimeOfAccident") Is Nothing Or objDS.Tables(0).Rows(0)("TimeOfAccident") Is System.DBNull.Value) Then strTime = objDS.Tables(0).Rows(0)("TimeOfAccident") 'strTime taking value 12:12 index = strTime.IndexOf(":") 'index taking value 2 lastIndex = strTime.Length 'Lastindex taking value 5 strTimeHr = strTime.Substring(0, index) 'strTime taking value 12 correctly strTimeMin = strTime.Substring(index + 1, lastIndex) 'BUT HERE IS PROBLEM OCCURE strTimeMin Doesn't taking any value Me.NumUpDwHr.Text = strTimeHr Me.NumUpDwMin.Text = strTimeMin End If

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  • Free Application Lifecycle Management Tools for .NET Development

    - by pablocastilla
    I would like to achieve the following: I want a free Application Lifecycle Management (ALM) environment surrounding vs2008 sp1. (My company is short of cash). I want all the stuff: CI, BugTracking, task panel, Wiki, Source control... all integrating themselves. If I could have some kind of scrum managing tools it would be better. Any recommendation? Thanks in advance.

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  • vb.net pdf reader load problem

    - by steve
    From the tools menu I have done right clickchoose itemCOM (tab) and ticked adobe pdf reader. From here I simply dragged the pdf tool onto my form. That's all I've done. Now on form load it throws a bug. "InvalidOperationException was unhandled" hovering over the message it says the following, An error occurred creating the form. See Exception.InnerException for details. The error is: Class not registered (Exception from HRESULT: 0x80040154 (REGDB_E_CLASSNOTREG)) Any ideas anyone? Gonna take a mastermind to work this one out seriously

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  • VB.NET add an element to the XML document with LINQ to XML

    - by Bayonian
    Hi, I'm adding an element to existing XML doc with the following code: Dim theXMLSource As String = Server.MapPath("~/Demo/") & "LabDemo.xml" Dim nodeElement As XElement Dim attrAndValue As XElement = _ <LabService> <ServiceType> <%= txtServiceType.Text.Trim %> </ServiceType> <Level> <%= txtLevel.Text.Trim %> </Level> </LabService> nodeElement.Add(New XElement(attrAndValue)) nodeElement.Save(theXMLSource) It makes error like this: System.NullReferenceException: Object reference not set to an instance of an object. Object reference not set to an instance of an object. Error line: nodeElement.Add(New XElement(attrAndValue)) I debugged it but I couldn't get the error yet. Can you show what the problem is? Thank you

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  • .NET Working with Locking and Threads

    - by aherrick
    Work on this small test application to learn threading/locking. I have the following code, I would think that the line should only write to console once. However it doesn't seem to be working as expected. Any thoughts on why? What I'm trying to do is add this Lot object to a List, then if any other threads try and hit that list, it would block. Am i completely misusing lock here? class Program { static void Main(string[] args) { int threadCount = 10; //spin up x number of test threads Thread[] threads = new Thread[threadCount]; Work w = new Work(); for (int i = 0; i < threadCount; i++) { threads[i] = new Thread(new ThreadStart(w.DoWork)); } for (int i = 0; i < threadCount; i++) { threads[i].Start(); } // don't let the console close Console.ReadLine(); } } public class Work { List<Lot> lots = new List<Lot>(); private static readonly object thisLock = new object(); public void DoWork() { Lot lot = new Lot() { LotID = 1, LotNumber = "100" }; LockLot(lot); } private void LockLot(Lot lot) { // i would think that "Lot has been added" should only print once? lock (thisLock) { if(!lots.Contains(lot)) { lots.Add(lot); Console.WriteLine("Lot has been added"); } } } }

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  • How do i judge when the NetWorkStream finishes by using .net TcpClient to communicate

    - by Hwasin
    I try to use stream.DataAvailable to judge if it is finished,but sometimes the value is false but after a little while it is true again,i have to set a counter and judge the end by the symbol '' like this int connectCounter = 0; while (connectCounter < 1200) { if (stream.DataAvailable) { while (stream.DataAvailable) { byte[] buffer = new byte[bufferSize]; int flag = stream.Read(buffer, 0, buffer.Length); string strReadXML_t = System.Text.Encoding.Default.GetString(buffer); strReadXML = strReadXML + strReadXML_t.Replace("\0", string.Empty); } if (strReadXML.Substring(strReadXML.Length - 1, 1).Equals(">")) { break; } } Thread.Sleep(100); connectCounter++; } is there any good methord to deal with it?Thank you!

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  • .NET using block and return; keyword

    - by Emre
    When I say this using (Entities db = new Entities()) { return db.TableName.AsQueryable().ToList(); } Do I by-pass the functionality of using block since I return something, and the method exits before exiting the using block, so I think the using block will not serve to its purpose and dispose the resource. Is this correct?

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  • .NET Sockets and Proxy Servers

    - by Tristan
    I'm trying to make some source code for a library I downloaded work with a proxy server. The library uses sockets to connect to a server but if the client using the library is behind a proxy server it can't connect. Does anyone know how I can modify the socket to be able to connect to the server through a proxy server? I really want to just do this with the sockets in the library without having to change too much code to use WebRequest or something similar

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  • Having two ODP.NET (ODAC) versions in the same server

    - by vizcaynot
    Hello: Some months ago, a colleague of mine installed ODAC 11.106.21 in a server using XCOPY and then he developed many applications that use this client without problems (in test and production windows servers). Past week, I developed an application under ODAC 11.1.07.20. When I asked him to install these new ODAC version using XCOPY in a different folder and then include my application in the test server, he answered me that I should use ODAC 11.106.21 because he could have troubles with his applications. So I would like to know: 1) If it is really possible to have two different ODAC versions in one server. 2) If the answer is positive, how can I firmly ensure to my colleague that he will not have troubles with his applications? 3) If the answer is positive, is this necessary to do some kind of configuration in the server? Thanks!!

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  • C# Winforms ADO.NET - DataGridView INSERT starting with null data

    - by Geo Ego
    I have a C# Winforms app that is connecting to a SQL Server 2005 database. The form I am currently working on allows a user to enter a large amount of different types of data into various textboxes, comboboxes, and a DataGridView to insert into the database. It all represents one particular type of machine, and the data is spread out over about nine tables. The problem I have is that my DataGridView represents a type of data that may or may not be added to the database. Thus, when the DataGridView is created, it is empty and not databound, and so data cannot be entered. My question is, should I create the table with hard-coded field names representing the way that the data looks in the database, or is there a way to simply have the column names populate with no data so that the user can enter it if they like? I don't like the idea of hard-coding them in case there is a change in the database schema, but I'm not sure how else to deal with this problem.

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  • .NET XML Serialization without <?xml> root node

    - by Graphain
    Hi, I'm trying to generate XML like this: <?xml version="1.0"?> <!DOCTYPE APIRequest SYSTEM "https://url"> <APIRequest> <Head> <Key>123</Key> </Head> <ObjectClass> <Field>Value</Field </ObjectClass> </APIRequest> I have a class (ObjectClass) decorated with XMLSerialization attributes like this: [XmlRoot("ObjectClass")] public class ObjectClass { [XmlElement("Field")] public string Field { get; set; } } And my really hacky intuitive thought to just get this working is to do this when I serialize: ObjectClass inst = new ObjectClass(); XmlSerializer serializer = new XmlSerializer(inst.GetType(), ""); StringWriter w = new StringWriter(); w.WriteLine(@"<?xml version=""1.0""?>"); w.WriteLine("<!DOCTYPE APIRequest SYSTEM"); w.WriteLine(@"""https://url"">"); w.WriteLine("<APIRequest>"); w.WriteLine("<Head>"); w.WriteLine(@"<Field>Value</Field>"); w.WriteLine(@"</Head>"); XmlSerializerNamespaces ns = new XmlSerializerNamespaces(); ns.Add("", ""); serializer.Serialize(w, inst, ns); w.WriteLine("</APIRequest>"); However, this generates XML like this: <?xml version="1.0"?> <!DOCTYPE APIRequest SYSTEM "https://url"> <APIRequest> <Head> <Key>123</Key> </Head> <?xml version="1.0" encoding="utf-16"?> <ObjectClass> <Field>Value</Field> </ObjectClass> </APIRequest> i.e. the serialize statement is automatically adding a <?xml root element. I know I'm attacking this wrong so can someone point me in the right direction? As a note, I don't think it will make practical sense to just make an APIRequest class with an ObjectClass in it (because there are say 20 different types of ObjectClass that each needs this boilerplate around them) but correct me if I'm wrong.

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  • .net OpenFileDialog changing the CurrentDirectory

    - by meowing
    Hi, I am using OpenFileDialog. But using it changes the Environment.CurrentDirectory. Using the RestoreDirectory property solves this issue, but I'm using external dlls that I can't control that don't use RestoreDirectory. Is there a way to make it true as default? Or is there any other solution to this annoying problem? Thanks.

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  • Pros and Cons of automating Excel using VBA vs .Net

    - by Andy
    I've been tasked with creating a financial planning tool in Excel that would benefit from some custom functions/macros. My initial reaction was to use VBA. I've used it to drive Excel before (say 5 years ago). But I then began to wonder if I would be better off using VSTO. Has anyone has experience using both techs and can list the pros and cons so that I can evaluate which course would be best.

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  • .net code readability and maintainability

    - by george9170
    There Currently is a local debate as to which code is more readability We have one programmer who comes from a c background and when that programmer codes it looks like string foo = "bar"; if (foo[foo.Length - 1] == 'r') { } We have another programmer that doesn't like this methodology and would rather use if (foo.EndsWith("r")) { } which way of doing these types of operations is better?

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  • How can I make a server log file available via my ASP.NET MVC website?

    - by Gary McGill
    I have an ASP.NET MVC website that works in tandem with a Windows Service that processes file uploads. For easy maintenance of the site, I'd like the log file for the Windows Service to be accessible (to me, only) via the website, so that I can hit http://myserver/logs/myservice to view the contents of the log file. How can I do that? At a guess, I could either have the service write its log file in a "Logs" folder at the top level of the site, or I could leave it where it is and set up a virtual directory to point to it. Which of these is better - or is there another, better way? Wherever the file is stored, I can see that there's going to be another problem. I tried out the first option (Logs folder in my website), but when I try to access the file via HTTP I get an error: The process cannot access the file 'foo' because it is being used by another process. Now, I know from experience that my service keeps the file locked for writing while it's running, but that I can still open the file in Notepad to view the current contents. (I'm surprised that IIS insists on write access, if that's what's happening). How can I get around that? Do I really have to write a handler to read the file and serve it to the browser myself? Or can I fix this with configuration or somesuch? PS. I'm using IIS7 if that helps.

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  • Return ArrayList from .net web service to android application using kSoap

    - by benjamin schultz
    My web service is returning quite a bit of data, so i'm storing it in an arraylist and returning that to my application. I don't know whether or not this is the preferred method or not. When the arraylist is returned and displayed in my application, it also displays the arraylists "anyType" section. I'm new to this whole process so i'm sure i'm missing something somewhere or going about this incorrectly. Can anyone point me in the right direction please?

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  • Printing a PDF in .NET

    - by Chris Marasti-Georg
    It's the "printing question guy" again. Looking for a third-party solution to print PDFs, preferable from a service. I have seen some arguments against it, but due to our use case, this really is the preferred solution - the service will be receiving messages from a messaging bus, and there shouldn't be any sort of delay between the receipt of that message and the printing of the report. So far, I've found 1 solution from PDF Tools that seems very nice, and very flexible. The problem is that it's licensed per server. If anyone knows of any third-party solutions that have a seat license (per developer, unlimited runtime distribution), that would be much preferred. EDIT: Clarification, by printing, I mean sending the PDF to a printer.

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  • Windows Forms Autosizing in .NET

    - by mcoolbeth
    My C# project contains a form. There are some controls across the top of the form and some controls across the bottom of the form, as well as a FlowLayoutPanel in the center, all of which have been placed with the Visual Studio Form Designer. During runtime, controls are dynamically added to and removed from the FlowLayoutPanel, and both the panel and the form itself are configured to automatically fit the size of they're contents. However, since some controls were placed with the designer above and below the FlowLayoutPanel, the desired resizing fails to take place when new controls are added to the FlowLayoutPanel. Does anybody know of a convenient remedy for this problem?

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  • .NET Com Interobability

    - by Kottan
    I have C# class X which inherits from class Y. Class X should be Com-Visible (should be used in an old Vb6 application). It is it neccessary to use some Types of class Y in the VB6 application. How can I make them also COM-vivible (without changing class Y) ?

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  • Code reviews for larger MVC.NET team using TFS

    - by Parrots
    I'm trying to find a good code review workflow for my team. Most questions similar to this on SO revolve around using shelved changes for the review, however I'm curious about how this works for people with larger teams. We usually have 2-3 people working a story (UI person, Domain/Repository person, sometimes DB person). I've recommended the shelf idea but we're all concerned about how to manage that with multiple people working the same feature. How could you share a shelf between multiple programmers at that point? We worry it would be clunky and we might easily have unintended consequences moving to this workflow. Of course moving to shelfs for each feature avoids having 10 or so checkins per feature (as developers need to share code) making seeing the diffs at code review time painful. Has anyone else been able to successfully deal with this? Are there any tools out there people have found useful aside from shelfs in TFS (preferably open-source)?

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  • .Net ListView and System's Icon Size

    - by WhoaNow
    I have a ListView using the LargeIcon View mode with some 64x64 thumbnails. The problem is that the padding between ListViewItems is somehow based on the system's Icon size value (Display Properties Appearance Advanced Icon). The default for XP seems to be 32 and the ListView and its thumbnails look fine, but with higher Icon sizes, the items are spaced out horrendously. Is there any way to override this behavior and force it to use the same spacing?

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  • SQLiteDataAdapter Fill exception C# ADO.NET

    - by Lirik
    I'm trying to use the OleDb CSV parser to load some data from a CSV file and insert it into a SQLite database, but I get an exception with the OleDbAdapter.Fill method and it's frustrating: An unhandled exception of type 'System.Data.ConstraintException' occurred in System.Data.dll Additional information: Failed to enable constraints. One or more rows contain values violating non-null, unique, or foreign-key constraints. Here is the source code: public void InsertData(String csvFileName, String tableName) { String dir = Path.GetDirectoryName(csvFileName); String name = Path.GetFileName(csvFileName); using (OleDbConnection conn = new OleDbConnection("Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" + dir + @";Extended Properties=""Text;HDR=No;FMT=Delimited""")) { conn.Open(); using (OleDbDataAdapter adapter = new OleDbDataAdapter("SELECT * FROM " + name, conn)) { QuoteDataSet ds = new QuoteDataSet(); adapter.Fill(ds, tableName); // <-- Exception here InsertData(ds, tableName); // <-- Inserts the data into the my SQLite db } } } class Program { static void Main(string[] args) { SQLiteDatabase target = new SQLiteDatabase(); string csvFileName = "D:\\Innovations\\Finch\\dev\\DataFeed\\YahooTagsInfo.csv"; string tableName = "Tags"; target.InsertData(csvFileName, tableName); Console.ReadKey(); } } The "YahooTagsInfo.csv" file looks like this: tagId,tagName,description,colName,dataType,realTime 1,s,Symbol,symbol,VARCHAR,FALSE 2,c8,After Hours Change,afterhours,DOUBLE,TRUE 3,g3,Annualized Gain,annualizedGain,DOUBLE,FALSE 4,a,Ask,ask,DOUBLE,FALSE 5,a5,Ask Size,askSize,DOUBLE,FALSE 6,a2,Average Daily Volume,avgDailyVolume,DOUBLE,FALSE 7,b,Bid,bid,DOUBLE,FALSE 8,b6,Bid Size,bidSize,DOUBLE,FALSE 9,b4,Book Value,bookValue,DOUBLE,FALSE I've tried the following: Removing the first line in the CSV file so it doesn't confuse it for real data. Changing the TRUE/FALSE realTime flag to 1/0. I've tried 1 and 2 together (i.e. removed the first line and changed the flag). None of these things helped... One constraint is that the tagId is supposed to be unique. Here is what the table look like in design view: Can anybody help me figure out what is the problem here?

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