I am trying to work on an application that uses a dll as a COM object. I am coming in late to this project to administer/update the application. I notice in the References that a particular DLL is referenced as "Interop.DLLName" and I have the original DLL file as just DLLName with no Inter...more >>

How to obtain the IP address of the interface that is connected to the Internet? I´m using the code below to get IP address of the local machine: //********************************************* private void button1_Click(object sender, System.EventArgs e) { string HostName = Dns.GetHostName...more >>

I have the following regular expression. It works fine if the regex code returns a match. However if not the .match code fails. How can I code this so that it skips the match if the regular expression does not find anything? Regex reg_unit_num = new Regex("L_unit_num.*?>(.*?)</td>", Reg...more >>

Hi, I am triggering a batch file from my C# code. There are no echo commands in the batch file...yet the console window/command prompt window pops up every time the batch file is triggerred. Is there a way to stop the window from appearing and just running all the batch commands in the backgr...more >>

I am trying to code an compile a stored procedure without success. So I generated one using Microsoft Visule C# .Net. and it follows. One of the problems is that it will not compile. Some of the message won't to put ';' all over the place, I some need help!!! These are some of the compile m...more >>

I had some code that returns a random record for a recordset. It works fine unless my record set has one value. So as a solution I tried to wrap the whole thing inside an If statement so that it was only called if the record count was bigger then 1. However when I made that I change I get th...more >>

Hello all, I would like some advice how best to approach the following problem. I have "sort of" solved it but in a very horrible and complex way, I'm sure there's a better, simple and more elegant way, but I just can't see it. The problem is as follows... I have a list of items that are...more >>

I was wondering if anyone knew any places where I could get some more specifics about it. I have read the docs but they seem very vague to me and don't describe all the available settings. Specificaly I'm wondering 1. What is the instrumentation part do? It seems it only counts the number ...more >>

I have a SQL database and some fields may be null. This will trow an exeption: string[] s=new string[10]; s[0]=String.Format("{0}",myReader.GetString(1)); s[1]=String.Format("{0}",myReader.GetString(2)); s[2]=String.Format("{0}",myReader.GetString(3)); // null field s[3]=String.Format("{0}",...more >>

I read in MSDN an examples for Image Stretching but something I can not understand is this line e.Graphics.DrawImage(newImage, destRect1, x, y, width, height, units); what is e in all example they did not show what is e ????? any help...more >>

I'm implementing a singleton using the example at: http://www.yoda.arachsys.com/csharp/singleton.html as a basis (second example). However - I have about 20 classes I wish to make singletons - and I don't want to duplicate the code in each one. The difficulty comes in the method that returns...more >>

I heard that beta 2 now makes ASP.NET xhtml compliant. Can anyone shed some light on what this will change and it will break stuff as converting HTML to XHTML pages DO break things. see, http://www.alistapart.com/articles/betterliving/ I read on http://msdn.microsoft.com/netframework/defaul...more >>

hello all, I am wondering how to trap application load event on a windows forms c# application. My objective is to instanciate my own windows forms on the fly based on some registry settings. where in the visual studio project can I write this code? I need to know where does the applicat...more >>

Hi all, I have a table having 20 fields & 10 rows with one field as primary key say rollNo. I want to copy a row of the table to the table itself with a new rollNo. Is there a simple way out or i have to take the row in a dataset & then modify the rollno column of the dataset with the new ...more >>

Hi all, Iam getting a Specified cast not valid on this line ((System.Data.OleDb.OleDbDataA=ADdapter)objDataAdapter).AcceptC=ADhangesDur= ingFill=3Dfalse; Please help me out=20 thanks in advance=20 thomson ...more >>

Hi, I have one base form which has a panel control. I made the panel control protected because I want to add controls in it. When I inhert it using visual studio designer and add controls (anywhere in the form) the designer add one row: this.myPanel.Size=.... and in this way I have problems w...more >>

Hi does anyone know of a C# Web Control Library example code / project which creates a Graph not using controls like Table, Labels etc. TIA Barry ...more >>

Hello. I want to display the content of 'displayTable' object reversely. When from r=0 to r= displayTable.Length-1, the code works well to display. But when from r= displayTable.Length-1 to r=0, the code doesn't work to display. Thanks a lot for any help. ********** DataRow[] displayTa...more >>

I have two window services that I created in C# and VB.net, one each, and set them to manual startup type. However, sometimes (not everytime) when I starts the service, an error message pops-up to say the service started and stopped automatically. -------------------------------------------...more >>

What is empty character literal and how can we get rid of it. I want to check whether the text box is empty so I use if (TextBox1.Text == '' ) Why cant I do this? *** Sent via Developersdex http://www.developersdex.com ***...more >>

Hi, I have created a dropdownlist as a web user control. I am using its multiple instances on the webpage. How do I access the selectedValue of each instance? All the instances have different IDs. Thanks Vivek ...more >>

hi all I want to decrease size of an image without losing it's content. for example decreasing size of an image by 20%. thx in advance ...more >>

Could somebody say why the piece of code below does not work? My purpose is to renumber keys in a SortedList (after removal of an item) so that the keys would always contain an unbroken sequence of integers starting with 1. For some reason this is not the result. IDictionaryEnumerator d...more >>

OK, I know you can't have globals in C#, and I know that they are abused in other languages, but sometimes they are the best answer: I have a Settings Class. I would like to create a single instance of this settings class so that my other classes can use it to read / write their settings....more >>

I have a regular expression : Match match = Regex.Match(line, @"(?<name>.*)\((?<id>\S+)\)"); It is able to parse the text with the following syntax: data(Hello) type(integer) My regular expression failed when the following is encountered: data(Hello world) How do I modify my regula...more >>

What is wrong with **** What should it be? Thank you. private void button3_Click(object sender, System.EventArgs e) { { if(saveFileDialog1.ShowDialog() == DialogResult.OK) { using (StreamWriter sw = new StreamWriter(saveFileDialog1.FileName****)) { sw.WriteL...more >>

Hi I am having a few problems with one of my forms... I have a data grid bound to a dataset using a currencymanager and it's all working fine. However when i edit or change any of the data in the Datagrids columns/rows i need to call update so the changes are saved back to my database, this is...more >>