Visual C#

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  • Topics
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  • Searching for a string item in List<string>
    by Kulvinder
    6 Replies
    Last post by Thomas Danecker
      • Hi, I have a List<string> and a string value. I want to do a case insensitive check whether the string value i have is present in the string collection i have. I used List<string>.Contains(string item) method but it does a case sensitive check. Is there any way that i can check whether my string value is present in the list without worry for case I mean : List<
  • Detecting Windows events
    by EduardoPayan
    2 Replies
    Last post by Peter Ritchie
      • What i am trying to do is that, if a user creates an image file in a certain folder, a background program detects such event and triggers the automatic creation of a text file which will be related to this image fils by having the same name (Except of course for the extension). It's just an idea that popped in my mind a few minutes ago... and I wonder if i could develop it in some way. Thank
  • How to change the name of C# Project
    by ranadheer mac
    4 Replies
    Last post by ahmedilyas
      • Dear friends my question may sounds little bit different. yes it is how to change the name of C# project. i have made a .dll file using VS2005 C# it contains several class files and windowsforms and referal dll's now after finishing that project i just want to change the name of the whole project. any guide lines to follow. Thnaks and regards Ranu
  • params without parameters
    by Selcux
    4 Replies
    Last post by James Curran
      • public static void UseParams( params int[] list) { for (int i = 0 ; i < list.Length; i++) { Console.WriteLine(list ); } Console.WriteLine(); } Assume that I have such method. What if I call it wihout parameters. Like UseParams(); It works but I wonder if it will be a problem or not. Should I use it in that way
  • Event best practice
    by dotnetluke
    11 Replies
    Last post by dotnetluke
      • I need to create an event class that will: The event will fire in one class...and a different class will consume the event. public class Event { public delegate void MyHandler (); public event MyHandler MyEvent; public void FireEvent { MyEvent(); } } How to I subscribe to the event class
  • Conversion Issue from VS.NET 2002 to VS.NET 2005
    by Vishal Shah
    4 Replies
    Last post by Vishal Shah
      • All the classes are converted to partial and in the user controls the shared property has following error. "Reference to a non-shared member requires an object reference".
  • TimeSpan in Table.Select statement
    by AlexBB
    5 Replies
    Last post by AlexBB
      • I have a field in a table which is TimeSpan and I need to do Select on it. All my statements threw an exception. TimeSpan tsp; Table.Select ("timeOfDay = #" + ( TimeSpan )tsp + "#" ); Cannot perform '=' operation on System.TimeSpan and System.DateTime. Table.Select ("timeOfDay = ''" + ( TimeSpan )tsp + "'" ); Cannot perform '=' operation
  • Unhandled exception only when running in release without debugger attached.
    by utterlyconfused
    14 Replies
    Last post by utterlyconfused
      • I am beyond baffled by this. My application throws a System.AccessViolationException only when it is run in Release mode without the debugger attached (as in, I run the exe directly, outside of Visual Studio or I do "Start Without Debugging" in the Debug menu). Debug mode - everything works great; Release mode with debugger attached - everything works great. The very nature of how this e
  • Q: Using the ThreadPool class
    by kirchu
    14 Replies
    Last post by Sean Hederman
      • Hello everybody. I have a little trouble using the ThreadPool class. The logic is the following. I have a class called Render and a method in it.
  • .NET Application does not start
    by sanchez911
    9 Replies
    Last post by Timur SHAKIROV
      • Hi! I'm have following problem: my .NET application does not start on another computer. It has Win XP SP2, I've installed .NET Framework (2.0) from my distributive of Visual Studio, but problem remains. When I try to launch this application, just nothing happens, it appears in processes for a short time and than dissapears. There are no any error messages. Application is simple "hello worl
  • Object class and value data type
    by brother14th
    11 Replies
    Last post by Figo Fei - MSFT
      • Hi All, I cheked the Object.ToString method in MSDN this morning. It says that This method can be overridden in a derived class to return values that are meaningful for that type.For example, the base data types, such as Int32 , implement ToString so that it returns the string form of the value that the object represents... After reading these, I've two questions. Q1)Can Int32 be conside
  • Using the "as" Keyword
    by Tryin2Bgood
    5 Replies
    Last post by boban.s
      • Will using the "as" keyword when using type conversion not through an Invalid cast exception If so how would i make this statement the same but use the as keyword instead of the = _EndingVendorLegs.EndID = ((Tracking.BusinessObjects. StopOrderLegDetail )tempOrderManifest[ this .tempOrderManifest.Count - 1]).StopID; I want to see if it could be _EndingVendorLegs.EndID as ((T
  • Virtual parameters on a function?
    by Al Pike
    6 Replies
    Last post by Al Pike
      • Is there such a concept as virtual parameters as part of a function definition in C# I believe this is similar in concept the problem of 'dynamic casting' that I sometimes have seen posts about which I understand is not possible but virtual parameters could be a 'doable exception' that I think serves the same purpose. Let me explain what I want to do. I want to extend an exsiting set
  • May I use FieldAccessException for own purpose ?
    by mhoffmann
    5 Replies
    Last post by sirjis
      • Hi, I wanna throw an Exception when assignments are made to field-corresponding properties, which are already initialized, 'cause I want to force a user of the class to use Change..-Methods on already initialized fields , which implement a confirm-dialog before overwriting existing data. Would it be bad style to use the NET-FieldAccessException for that ( It's not really
  • Problem with delegates and invoke
    by mhmani21
    2 Replies
    Last post by mhmani21
      • Hi. I have a networking application. All that is transfered between the client and server is string, nothing else. I deal with the the netwroking things in a class library. I send my info to server using functions and when I receive the answer from server, depending on what it is, I'll decide what I need to do in the client. At some point, I need to receive a list o names form server, and updat
  • How to Serialize an array whose type is decided during runtime?
    by Chaitanya Vempati
    6 Replies
    Last post by Peter Ritchie
      • Hi, I have the following problem: I want to use a class with an array public class readVariable { public string name; public string type; public Array value; } The instance of this class is created during runtime using Array.CreateInstance method. The type of array is decided by the "type" string which is read from the user. So
  • Create Window
    by sachin kumar rana
    2 Replies
    Last post by Figo Fei - MSFT
      • Hello , I want to create a Window and place it over any running application. My Window should behave as if it is the part of running application. Any ideas.. Pls suggest me . If possible please give me some code sample or list of APIs .. Thanks Sachin Kumar Rana
  • A question of OO structure...
    by BenFinkel
    11 Replies
    Last post by BenFinkel
      • Hello All, I'll do my best to explain what I'm trying to accomplish and look forward to any and all suggestions you have for the "proper" way to do this (realizing there is no 100% correct way, but some methods are more optimal than others). I apologize in advance for my n00bness. For this example, I'll use football (american) players. I want my Player class to have a List<Stat> co
  • Date & Time
    by ABCsharp
    8 Replies
    Last post by ABCsharp
      • hi, im doing a project and i am required to display date & time. however, im unable to get the codes online, i tried researching but to no avail. can somebody help me on it. i jus want to get the current time n date. thanks.
  • Dependent Assemblies not copy over multiple levels
    by THURST80
    4 Replies
    Last post by THURST80
      • It appears that following my conversion to .NET 2 some of my dependent assemblies aren't getting copied accross more than one level. i.e. SmartCheckRemoteBusinessServices references SmartCheckDataAccessObject that references both SmartCheckBusinessObjectPersistenceMappingAU and SmartCheckBusinessObjectPersistenceMappingUK . SmartCheckBusinessObjectPersistenceMappingAU.dll and SmartCheckB
  • obtaining the index of a checkbox from inside an event
    by christopherbouy
    3 Replies
    Last post by christopherbouy
      • Quick Question I have an array of checkboxes,(not a checkbox list), created at runtime and inserted in a panel. Upon creation, they're each attached to the same CheckChanged event. Within this event, how do I know the index of the checkbox that triggered it Thanks in advance.
  • How to have multiple sets of application settings?
    by FredKotelet
    6 Replies
    Last post by Steven E Blake
      • Hi, I'm using the standard mechanism to set and retrieve application settings (using app.config, Settings.settings and Settings.Designer.cs). I can set the application settings using the Visual Studio IDE and retrieve them like this: string title = Properties. Settings .Default.WindowTitle; This works fine - for a single set of settings. But now I'd like to run multiple instances of my a
  • validating gender
    by adorer
    6 Replies
    Last post by adorer
      • I am using this code to validate my records .. but the problem come always from gender ... I want it to be male or female but alwayes when I type male it does not pass the validator.. help me this is m code if (Request.QueryString["username"]=="123" && Request.QueryString["password"]=="123") { if (Request.QueryString["
  • Tab value in .txt file
    by Krutika
    2 Replies
    Last post by Krutika
      • I have a method which takes 2 parameters delimitors as string and data as dataset public void createTxtFile(string delimitor, DataSet newData) The method reads the dataset, adds delimitor after each value in dataset, writes to .txt file The problem is how do I pass tab value to the method Can anyone help
  • Simple C# SQL Reading Question
    by StevenAFC
    4 Replies
    Last post by StevenAFC
      • string strSQLCon = "Provider=SQLOLEDB;Data Source=TECRA\\SQLEXPRESS;Initial Catalog=Elsie;User ID=primUser;Password=Password"; string strSQLQuery = "SELECT * FROM Test"; ADODB.Connection Conn = new ADODB.Connection(); ADODB.Recordset RS = new ADODB.Recordset(); Conn.Open(strSQLCon,null,null,-1); RS.Open(strSQLQuery,strSQLCon,ADODB.CursorType