I have found some examples on MSDN (http://msdn.microsoft.com/library/ default.asp?url=/library/en-us/csref/html/ vcwlkIndexedPropertiesTutorial.asp), Code Project, etc about property indexers. In these examples the indexer uses a reference back to the main class. Why is this done this way? Why ...more >>

Hello, I get some strange behaviour after calling a method on a third party library when I call: System.Diagnostics.Process.GetCurrentProcess().StartTime If I run the following code it works as expected: try { MapInfo.Engine.Session.Current.Catalog.OpenTable(@"C: \MapApplication\Data...more >>

I am somewhat new to the concept of remoting in c#. Here is my scenario, if anyone could give me some tips I would really appreciate it: I have a server program running that updates a database and a binary file every hour - this process takes approximately 10-15 seconds to complete. There a...more >>

Greetings, I would like to integrate a barcode scanner into the current project I am working on. I have been looking around teh web and with the exception of embeded devices I cannot find many programming guides. What I am looking for is a barcode scanner with an api/sdk. I am not interested ...more >>

Hi, I have a column with SQL Server type binary(20) (contain a sql handle, ex : 0x01000800B73B573B98C6B1030000000000000000) I want to convert this column to string value with this code : string sql_hndl = MyDataRow["ColWithBinaryType"].tostring; I'm expecting '0x01000800B73B573B98C6B10...more >>

Hi, I need to programmatically allow or disallow the selection of multiple checkboxes on a form . At certain times I only want to allow a single selection, at other times I may wish to allow multiple. Is there a way of doing this ? I dont want to use Radio buttons..... Thanks, Jon....more >>

Hello, Not sure If I'm posting in the correct group here, so I appologize in advance if I selected the wrong one. I am trying to initialize a short with a hex value... sounds trivial right? Well I have not found a way to do this in c# without the compiler complaining or throwing a exception...more >>

Hi, Could someone please tell me if I undrestand the concept of "Thread Saftey" correctly in Multi-threaded web application (asp.net 2) using following examples: 1. Class A is NOT a thread safe class: public sealed class A { private static int _iCustomerId; //Property Examp...more >>

Hello group, I have a project with several WebBrowser objects on separate tabs. I want to take screenshots of these. I am currently using the PrintWindow function. (Code below.) This works if the tab is open and the WebBrowser is displayed. For browsers on other tabs, however, the resulting b...more >>

Can i create Command,Connection objects once inside a class constructor and use them again and again by changing their values and destroy them instead of creating objects everytime in a class member function....... ...more >>

I've run into a problem in some code involving two class hierarchies that I can't figure out: I have an event hierachy topped with an interface, let's say- IEvent, EventA : IEvent, EventB : IEvent And some handlers- abstract EventHandler EventHandler1 : EventHandler Now in the abstr...more >>

Below is a class that can accessed from multiple threads and I want the = class to be thread safe. I have a private timer member whose interval = can be changed by different threads. Which is the correct way to define = the property below. Thanks Kurt Class1 { private Timer _timer =3...more >>

Hi, I have a Windows application (C# 2.0) that I have built, and I was wondering if anyone could help me. I am looking for ideas on how to go about making it so that when my application is installed, it can only be used on the computer it was installed on. I have no references to any non ....more >>

I have a Windows .NET 2.0 application that has been working fine for last year, and now all of a sudden on one customers computer I am getting this error, "Binary format of the specified custom attribute was invalid." Here is a stack trace of the error: at System.Reflection.CustomAttribute...more >>

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My client manager likes concatenated/composite primary keys. I don't. Can anyone forward any arguments pro or con? Thanks, Ron ...more >>

very confused on how to implement the IEnumerable and IEnumerator interfaces on a generic type. I understand I should just use a foreach loop in the GetEnumerator method and use "yield return", etc. would like to know how implement my generic GetEnumerator to yield return an interface to IEn...more >>

Hi, For example, if I do : using System.IO; using (StreamWriter sw =3D new StreamWriter("text.txt")) { sw.WriteLine("coup=E9"); } I end up with a file containing "coup=C3=A9" instead of "coup=E9" ... How can I solve this problem...more >>

I have used the publish wizard to distribute app using click once. A few questions: 1. Is there a way for me to dictate what folder on the users computer the application gets installed into? 2. Why do I see a "reference" to the application exe and not the atucal file exe anywhere on the ...more >>

hey all, is there a shorter way to write the following: System.Data.DataColumn[] keys = new System.Data.DataColumn[1]; // Add the column to the array. keys[0] = dataTable.Columns[0]; // Set the PrimaryKeys property to the array. dataTable.PrimaryKey ...more >>

I have a small C# program (about 400 lines of code) that is only 28kb after compiled. However when it runs (takes a whole 5 seconds) it takes up nearly 20MB of memory and I don't see why. Some of the assembly I used: using System; using System.Collections.Generic; using System.Windows.F...more >>

Note: My question is after the following code. I have this call: Navigate2(@"http://www.mySite.com"); Using this code: private void Navigate2(String address) { if (String.IsNullOrEmpty(address)) return; if (address.Equals("about:blank")) return; ...more >>

i am new with c sharp.... can u please tell me what is wrong here.... try { //message = _serialPort.ReadLine(); if (_serialPort.ReadLine()== "asif") { _serialPort.WriteLine("asif is there:"); ...more >>

I need to add a web reference programatically on the application's load event. Can anybody help me out with this Thanks in advance...more >>

hello, i'm try to research the way to open a remote machine's to collect the services and processes. i have the local data collection running but i can not figure out what MSDN or the C# help file is stating how to use "servicecollecter.machinename" to get the remote server's data. there i...more >>

hey all, i noticed when i run my stored procedure in sql studio i get a result set from my select statement and then below that i get a return value. how about when it's called from inside csharp. how do i get the return value then? thanks, rodchar...more >>

Hi, Is there an easy way to get an XPath expression (in string format) to an arbitrary node in a XmlDocument. E.g.: string s = node.XpathToString(). s = "myRoot/foo[@bar='altova']/myChild/text()" Regards Jesper. ...more >>

Hi, somebody help me? I need to know how can i do to create a report with c# code. The report could exist previously but should will be empty. My idea is to create some fields with c# code and include them into a report and posicioning and resizing them into the report with c# code. S...more >>

Hi all, I want to monitor internet explorers instance and get events when any IE instance is open. I want to develope it in dot net. how will i do this? Any help will be truely appreciated. thanks in advnace. ...more >>

Hi, I need a installer for c#.net application I'm using visual studio 2005,.net2.0 and sql server 2000 My application is windows application. I have two installers in mind 1.Wise installer 2.Install shield installer I don't know which one will be best. Most probably both have same facility. ...more >>

hi, I'm having problem with seeing my datagrid? Yet I set Property visible to true and I'm caling the DataBind() what could be the Problem. I mayed be forgetting something.. Could you please help? Thanks? ...more >>

Hi I am trying to view a Crystal report (8.5) using the Crystalreports viewer for C#.net. I have a form and the view control on it. I am using the following code to try load the report as the database location might change from PC to PC. The report is using a Microsoft Access Database. Ther...more >>

Hi All, Was wondering if anybody could help. I'm currently trying to copy a record from datatable to another. I have two problems: 1) Transferring the record from one datatable to another. 2) Transferring the record from the new datatable back to the database. Any ideas? Thanks Gib...more >>

Hi Folks Greetings to you all. I have been dealing a project, in which one of the requirement is to clear FireFox browser history programatically. Can anybody suggest me, how this can be implemented in either VB/C#.NET? Thanking You in Advance Regards Vighneswar ...more >>

Hello!! If I want to use SDK 2.0 do I have to download .NET 2.0 first. Or is it possible to use SDK 2.0 for .NET 1.1. I now use the default for VS2003. //Tony ...more >>

i have written a costum user control for my program works like an empty windows form, for styling and using reasons. and then i create inherited controls from that my main form design.. everything workd great till this point.. and then my client wanted the forms appear from full transparency...more >>