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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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  • 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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  • Displaying Many-To-Many Database relationship in VB.NET 2008 with DataGrid, MS SQL 2008

    - by user337501
    Computer bombed while posting this, couldnt find a duplicate question but if there is one, forgive me. So, I've run into a wall. And rather than use a ladder to avoid it, I'd like go through it. I'm setting up what I can best describe as a many-to-many relationship in a database. To examplify, imagine I have three primary tables: Items, Categories, Sections(nevermind the potential redundancy) Then I have another table, Properties. Items, Categories, and Sections can be associated with many properties. A single property can be associated with one, all, or none of the other tables. The best way I can figure to do this is to have join tables make the relationship. i.e. tblItems----(Foreign Key)----tblItems_To_Properties----(Foreign Key)----tblProperties In this example, tblItems simply has an "ItemID" Primary Key. tblItems_To_Properties has its own Primary Key(tblItems_To_PropertiesID), a Foreign Key to the Item(ItemID) and a Foreign key to the Property(PropertyID). The Properties table simply has its primary key(PropertyID) I hope this example isnt too confusing...if I have to I can find a way to put a diagram up or something. My problem is, I want to display this in a DataGrid using the Master-Detail method(DevExpress GridControl). I use the tblItems as a test, and I can see the Items in the parent view, but in the child view I see(understandably) the join table and that is it. My goal is to make it so the Grid ignores the join table and shows the Properties table as the only child. Any help on this method or insight into another solution would be muuuuuuuch appreciat

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  • .NET/C# - Disposing an object with the 'using' statement

    - by AJ Ravindiran
    Hello, Suppose I have a method like so: public byte[] GetThoseBytes() { using (System.IO.MemoryStream ms = new System.IO.MemoryStream()) { ms.WriteByte(1); ms.WriteByte(2); return ms.ToArray(); } } Would this still dispose the 'ms' object? I'm having doubts, maybe because something is returned before the statement block is finished. Thanks, AJ.

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  • lucene.net get starting and end index of a highlighted fragment in a searched field

    - by user339995
    "My search returns a highlighted fragment from a field. I want to know that in that field of particular searched document, where does that fragment starts and ends ?" for instance. consider i am searching "highlighted fragment" in above lines (consider the above para as single document). I am setting my fragmenter as : SimpleFragmenter fragmenter = new SimpleFragmenter(30); now the output of GetBestFragment is somewhat like : "returns a highlighted fragment from" Is it possible to get the starting and ending index of this fragment in the text above (say starting is 10 and ending is 45)

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  • Problems refreshing DataGridView after database update in VB.NET

    - by Gbolahan
    Dim myQuery = "UPDATE table1 SET data= CONCAT (data,'" & vbCrLf & "[ " & Date.Now() & " ]" & " " & "[" & getCN() & "]" & " " & txtTelenotes.Text & "[ item1 ]" & "') WHERE id='" & txtID.Text & "'" myCommand.Connection = conn myCommand.CommandText = myQuery myAdapter.SelectCommand = myCommand Dim myData As MySqlDataReader myData = myCommand.ExecuteReader() txtTelenotes.Text = "" dgvREcord.Refresh() I tried refreshing the DataGridView using: dgvREcord.Refresh() but it does not load the changes from the database.

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  • How to use Castle Windsor with ASP.Net web forms?

    - by Xian
    I am trying to wire up dependency injection with Windsor to standard asp.net web forms. I think I have achieved this using a HttpModule and a CustomAttribute (code shown below), although the solution seems a little clunky and was wondering if there is a better supported solution out of the box with Windsor? There are several files all shown together here // index.aspx.cs public partial class IndexPage : System.Web.UI.Page { protected void Page_Load(object sender, EventArgs e) { Logger.Write("page loading"); } [Inject] public ILogger Logger { get; set; } } // WindsorHttpModule.cs public class WindsorHttpModule : IHttpModule { private HttpApplication _application; private IoCProvider _iocProvider; public void Init(HttpApplication context) { _application = context; _iocProvider = context as IoCProvider; if(_iocProvider == null) { throw new InvalidOperationException("Application must implement IoCProvider"); } _application.PreRequestHandlerExecute += InitiateWindsor; } private void InitiateWindsor(object sender, System.EventArgs e) { Page currentPage = _application.Context.CurrentHandler as Page; if(currentPage != null) { InjectPropertiesOn(currentPage); currentPage.InitComplete += delegate { InjectUserControls(currentPage); }; } } private void InjectUserControls(Control parent) { if(parent.Controls != null) { foreach (Control control in parent.Controls) { if(control is UserControl) { InjectPropertiesOn(control); } InjectUserControls(control); } } } private void InjectPropertiesOn(object currentPage) { PropertyInfo[] properties = currentPage.GetType().GetProperties(); foreach(PropertyInfo property in properties) { object[] attributes = property.GetCustomAttributes(typeof (InjectAttribute), false); if(attributes != null && attributes.Length > 0) { object valueToInject = _iocProvider.Container.Resolve(property.PropertyType); property.SetValue(currentPage, valueToInject, null); } } } } // Global.asax.cs public class Global : System.Web.HttpApplication, IoCProvider { private IWindsorContainer _container; public override void Init() { base.Init(); InitializeIoC(); } private void InitializeIoC() { _container = new WindsorContainer(); _container.AddComponent<ILogger, Logger>(); } public IWindsorContainer Container { get { return _container; } } } public interface IoCProvider { IWindsorContainer Container { get; } }

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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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  • 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 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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  • Getting Service Tag from Dell Machine using .net?

    - by JonH
    Hello folks I've got a class that pulls model information (hardware info) for a local machine code is like so: Imports System.Management Public Class clsWMI Private objOS As ManagementObjectSearcher Private objCS As ManagementObjectSearcher Private objMgmt As ManagementObject Private m_strComputerName As String Private m_strManufacturer As String Private m_StrModel As String Private m_strOSName As String Private m_strOSVersion As String Private m_strSystemType As String Private m_strTPM As String Private m_strWindowsDir As String Public Sub New() objOS = New ManagementObjectSearcher("SELECT * FROM Win32_OperatingSystem") objCS = New ManagementObjectSearcher("SELECT * FROM Win32_ComputerSystem") For Each objMgmt In objOS.Get m_strOSName = objMgmt("name").ToString() m_strOSVersion = objMgmt("version").ToString() m_strComputerName = objMgmt("csname").ToString() m_strWindowsDir = objMgmt("windowsdirectory").ToString() Next For Each objMgmt In objCS.Get m_strManufacturer = objMgmt("manufacturer").ToString() m_StrModel = objMgmt("model").ToString() m_strSystemType = objMgmt("systemtype").ToString m_strTPM = objMgmt("totalphysicalmemory").ToString() Next End Sub Public ReadOnly Property ComputerName() Get ComputerName = m_strComputerName End Get End Property Public ReadOnly Property Manufacturer() Get Manufacturer = m_strManufacturer End Get End Property Public ReadOnly Property Model() Get Model = m_StrModel End Get End Property Public ReadOnly Property OsName() Get OsName = m_strOSName End Get End Property Public ReadOnly Property OSVersion() Get OSVersion = m_strOSVersion End Get End Property Public ReadOnly Property SystemType() Get SystemType = m_strSystemType End Get End Property Public ReadOnly Property TotalPhysicalMemory() Get TotalPhysicalMemory = m_strTPM End Get End Property Public ReadOnly Property WindowsDirectory() Get WindowsDirectory = m_strWindowsDir End Get End Property End Class Any possibility to get a service tag from WMI ? From the client side form I display values like so: Dim objWMI As New clsWMI() With objWMI Debug.WriteLine("Computer Name = " & .ComputerName) Me.Label1.Text = "Name: " & .ComputerName Debug.WriteLine("Computer Manufacturer = " & .Manufacturer) Me.Label2.Text = "Manufacturer: " & .Manufacturer Debug.WriteLine("Computer Model = " & .Model) Me.Label3.Text = "Model: " & .Model Debug.WriteLine("OS Name = " & .OsName) Me.Label4.Text = "OS Name: " & .OsName Debug.WriteLine("OS Version = " & .OSVersion) Me.Label5.Text = "OS VERSION: " & .OSVersion Debug.WriteLine("System Type = " & .SystemType) Me.Label6.Text = "System type = " & .SystemType Debug.WriteLine("Total Physical Memory = " & .TotalPhysicalMemory) Me.Label7.Text = "Memory: " & .TotalPhysicalMemory Debug.WriteLine("Windows Directory = " & .WindowsDirectory) Me.Label8.Text = "Win Directory: " & .WindowsDirectory End With

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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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  • creating enumeration using .NET's CodeDom

    - by Manish Sinha
    Hi, I want to create an Enumeration using CodeDom API. I have searched enough on the internet and I get results which are hardly of any use. What I want to generate is public enum bug_tracker_type { [Description("Bugzilla")] Bugzilla, [Description("Debbugs")] Debbugs, [Description("PHP Project Bugtracker")] PHP_Project_Bugtracker, [Description("Google Code")] Google_Code } I used CodeTypeDeclaration and set it's IsEnum property as true, created a name, and set it's Attributes. Now the biggest problem is how to populate the body? I tried CodeTypeMember mem = new CodeTypeMember(); mem.Name = WadlSharpUtils.CreateIdentifier(discreteValue.value); mem.CustomAttributes.Add(new CodeAttributeDeclaration(discreteValue.value)); // enumCandidate is an instance of CodeTypeDeclaration enumCandidate.Members.Add(mem); Though using this solution I can generate the Description attributes, the end of line would be ; and not ,

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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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  • A very weired problem with texbox control in C# .net

    - by Kazoom
    Well i know textbox is a very simple user control, perhaps the first input control ever made. I have been facing a very frustrating problem with this simple control. I programatically add a textbox in my user control. From ui i am able to edit it like a normal textbox. however, i am not able to read the user inputed value in the program. my program all the time sees the old value with which my text box was initialized. i textchange event getting triggered but the value never gets updated. This seemingly looks to be some innocuous bug in the code, but the program is very simple and it does not seem to be having any bug. Any guidelines on this issue?

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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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  • 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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  • VB.NET invalid cast exception

    - by user127147
    Hi there, I have a simple application to store address details and edit them. I have been away from VB for a few years now and need to refreash my knowledge while working to a tight deadline. I have a general Sub responsible for displaying a form where user can add contact details (by pressing button add) and edit them (by pressing button edit). This sub is stored in a class Contact. The way it is supposed to work is that there is a list with all the contacts and when new contact is added a new entry is displayed. If user wants to edit given entry he or she selects it and presses edit button Public Sub Display() Dim C As New Contact C.Cont = InputBox("Enter a title for this contact.") C.Fname = frmAddCont.txtFName.Text C.Surname = frmAddCont.txtSName.Text C.Address = frmAddCont.txtAddress.Text frmStart.lstContact.Items.Add(C.Cont.ToString) End Sub I call it from the form responsible for adding new contacts by Dim C As New Contact C.Display() and it works just fine. However when I try to do something similar using the edit button I get errors - "Unable to cast object of type 'System.String' to type 'AddressBook.Contact'." Dim C As Contact If lstContact.SelectedItem IsNot Nothing Then C = lstContact.SelectedItem() C.Display() End If I think it may be something simple however I wasn't able to fix it and given short time I have I decided to ask for help here. Thank you

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  • In .net what are the difference between Eventlog and ManagementObject for retriving logs from remote

    - by Mitesh Patel
    I have found out following two ways for getting Application Event log entries from remote server. 1. Using EventLog object string logType = "Application"; EventLog ev = new EventLog(logType,"rspl200"); EventLogEntryCollection evColl = ev.Entries 2. Using ManagementObjectSearcher object ConnectionOptions co = new ConnectionOptions(); co.Username = "testA"; co.Password = "testA"; ManagementScope scope = new ManagementScope(@"\" + "machineName"+ @"\root\cimv2", co); scope.Connect(); SelectQuery query = new SelectQuery(@"select * from Win32_NtLogEvent"); EnumerationOptions opt = new EnumerationOptions(); opt.BlockSize = 1000; using (ManagementObjectSearcher searcher = new ManagementObjectSearcher(scope, query,opt)) { foreach (ManagementObject mo in searcher.Get()) { // write down log entries Console.Writeline(mo["EventCode"]); } } I can easily get remote eventlog using method #1 (Using EventLog object) without any security access denied exception. But using method #2 (Using ManagementObjectSearcher object) i get access denied exception. Actually I want remote event log (only application and also latest log not all application logs) to be displayed in treeview like below - ServerName - Logs + Error + Information + Warning Can anybody help me in this to find out best way from this or any other? Also the main thing is that user who reads remote logs may be in different domain than server. Thanks Mitesh Patel

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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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  • 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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  • Enable/disable RequiredValidator on client-side / CustomValidator not firing

    - by Simeon
    I've got a drop-down where the user selects a Country. It is a required "field". Next to it, there is a textfield named State. If the user selects US, then the field State is required. If the user selects e.g. Sweden, the State is not required, since Sweden has no states. Example code: <asp:DropDownList runat="server" ID="Country"></asp:DropDownList> <asp:RequiredFieldValidator ControlToValidate="Country" runat="server" Display="Static" ErrorMessage="Required field" /> <asp:TextBox runat="server" ID="State"></asp:TextBox> <asp:CustomValidator ClientValidationFunction="DoesntGetFiredIfStateIsEmpty" runat="server" Display="Static" ErrorMessage="Required field" /> <!-- SO, RATHER THIS TOGETHER WITH CONDITIONAL FIRING --> <asp:RequiredFieldValidator ControlToValidate="State" runat="server" Display="Static" ErrorMessage="Required field" /> My question to you is: How can I make this CustomValidator fire validation when it is empty? Or put simplier: How can I make a RequiredValidator fire conditionally? Or simplest: How can I enable/disable a RequiredValidator on client-side?

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  • best method to update the SQL table data from c# .NET 2005

    - by Jebli
    Hi , I have a dataset with some 30 records in it. I want to update it to the database tables. which is the best method to update the table. I am unable to use dataadapter.update() since i am using a procedure to populate the dataset. is there any efficient way to update other than iterating through EACH record and updating it Please help. Thanks.

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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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