What tool can I use to see where my C# code is spending most of it's cycles for the purpose of optimizing it? Thanks in advance! ...more >>

Hi, I created a strong-typed (Class1) collection class for my web service, it actually serialized to <ArrayOfClass1 /> and I need to make the root named as <Class1Collection /> so I was trying to add an XmlRootAttribute but I always got error message when I tried to serialize this collectio...more >>

Hi Geeks, Can anyone suggest me an exhaustive tutorial/free e-book/forum on creating real-time graphing components in C#? The component should accept data from serial port (using API functions/events) & plot the same in real-time. -- Radhakrishna Banavalikar Vasant-Vihar, Thane, INDIA....more >>

I have a datetime filed, name Birthday. I use aTexBox.Text= ((DateTime)dr["Birthday"]).ToShortDateString(); but it result in an .InvalidCastException: How can I datetime field in a TextBox? ...more >>

Hi, What is the difference between (string)dr["FieldName"] and dr["FieldName"].ToString(); ...more >>

I'm using the following to transfer the content of two strings containing non-english letters byte[] responseB = Encoding.ASCII.GetBytes(responseHdr.ToString() + responseBody.ToString()); But when I receive it, the non-english letters have been replaced by question marks (?). What could ...more >>

Here's another one. The code is below. If I display to the ListBox, I get the exception: Could not bind to the new display member, Parameter name: newDisplayMember and all ListBox members are set to MtProg.Form1.USState If I comment out the listBox1 lines, leaving the comboBox1 line...more >>

Hi y'all, I tried to bind a one column table to a ComboBox and got this error: "Complex DataBinding accepts as a data source either an ILIST or an ILISTSOURCE" The code is: DataSet dataSet1; DataTable dataTable1 = new DataTable("LastNames"); dataTable1.Columns.Add(new DataColumn("L...more >>

I have a javascript functions which are used for populating 2 select boxes. The first select box is used for continent names, the second for the countries in the contint. When I click on a continent, in the second select box, are shown the countries. Everything works well accept one thing. When I...more >>

I need some assistance doing some "right way to do it" coding. The following are EventHandlers associated with Delegates in a child form that call a procedure in the MDI form that resets a timer. There must be a better way to code this than calling OnResetTimer in all these procedures separ...more >>

[DllImport("kernel32.dll")] static extern uint GetPrivateProfileString( string lpAppName, string lpKeyName, string lpDefault, StringBuilder lpReturnedString, uint nSize, string lpFileName); Interoping GetPrivateProfileString is giving me this Exception in certain cas...more >>

Is there any way in C# to mimic the T-SQL EXEC() command (which runs a string as if it was in-line T-SQL code) ? ...more >>

What is the proper way of defining a class that inherits from a base class that has no constructor with 0 arguments? The following code generates compiler error CS1501, "No overload for method 'BaseClass' takes '0' arguments". class BaseClass { public BaseClass(double x) { ...more >>

Hi People, I have the following bit of code: Console.WriteLine(DateTime.Now.ToString()); TcpClient tcp = new TcpClient(server, port); Console.WriteLine(DateTime.Now.ToString()); When "server" is an IP address it takes approximately 5 seconds while Windows works out if there is a Netbios...more >>

At runtime, how do you take a user-supplied string, and then match that up with a class property name? For example, I have a User class with the property User.Name. At runtime, I want the user to type 'set user.name=adam' and the code checks the user class instance for the property name pro...more >>

Thanx Willy, this was very helpful. But i also need (and want to know) how to do this from code. Can you plase give me right topic in MSDN? is there good example? Thanx p.s. this is copy/paste from previous thread, don't ask why... "Grei" <danko.greinerREMOVE@zg.htnet.hr> wrote in messag...more >>

I have just started doing some exercises in C# and have a question about carriage return and new line escape characters. The code is concatenating the text values from two textboxes and both the \r (carriage return) and \n (new line) escape characters are used between the two strings. Could yo...more >>

hi, is it possible to use a Socket (proto_udp) and recieve icmp messages ? what i want to do is, send a datagram to a remote host/port and check if the host replies with port_unreachable (i think icmp type 3). is this possible with a udp Socket and the RecieveFrom() method ?. another approach...more >>

I am looking for something similar to Microsoft.XMLHTTP in .NET I am just need to synchronously call an ASP page,pass it some parametrs and accept true or false string as a response Thanks ...more >>

Hi, Anyone know why "s" equals "0.0870000000000000000000" after the following lines execute? Thanks, Nate double d = 0.087000000000000008; string s = string.Format("{0:f22}", d);...more >>

I am using the following piece of code to post some data to a web form, req.Method = "POST"; req.ContentType = "application/x-www-form-urlencoded"; req.ContentLength =formcontents.Length; sendStream = req.GetRequestStream(); sendStream.Write(formcontents, 0, formcontents.Length); ...more >>

Hi again. Now I got a brand new problem using the java webservice. I'm trying to use the wsdl tool of the "Microsoft Visual Studio .Net 2003 Command Prompt"... but I got the same message when trying to add web reference in visual studio. Now, the message displayed is the following: "The...more >>

Hi, Can anyone help, I want to get a reference to a combobox item based on the item's value rather than the text (basically what I am asking is, is there a function like 'FindStringExact' for values) , does anyone know how to do this? Thanks, Nicky ...more >>

I need to insert a null value in a table on MS SQL Server 2000 using a stored procedure. When I send no data to the stored procedure, I get an error saying that the value cannot be null, but I did the table to receive null values. I tried DBNull.Value but didn't work. Thanks, Rodrigo....more >>

Hi! I need to convert from VB ASP to C# ASP.NET. // the following code is already converted. ' Create recordset and query Set rsCHI = Server.CreateObject("ADODB.Recordset") sCHI = "SELECT ..... ' Open recordset and run query rsCHI.Open sCHI,db,,,adCmdText // the code b...more >>

Hi, If you doubleclick on a dbgrid title separator the column automticly resize to his minumum width. How to do this in code ? -- rgds, Wilfried http://www.mestdagh.biz...more >>

is it a bad programming design to throw exception in the try block then catch it?? ...more >>

In development for a windows app, is it proper to manipulate and keep versions of the MyApp.exe.config or just the App.config file? ...more >>

Hello, I am failing to understand why I get an invalid cast exception with this very simple code. I have derived the EventArgs class as follow: public class StringArgs : System.EventArgs { public string Msg; public StringArgs(string aMsg) { Msg = aMsg; } } and I fire the...more >>

I'm running into an issue where I have a timer that appears to be timing out immediately, when it shouldn't be timing out for about int.MaxValue milliseconds. I have written a small app that isolates the problem and was wondering if anyone had any ideas on what I am doing wrong, or if there...more >>

I'm extremely new to C# and the Microsoft Visual Studio IDE. I'm writing a small web-application that executes a SQL Server stored procedure. For the most part, I have it working. I am at the point where I now just need to pass two more fields to the stored procedure, they are both to be da...more >>

Why do I get the exception An unhandled exception of type 'System.NullReferenceException' occurred in system.dll Additional information: Object reference not set to an instance of an object. before even getting to the first line of the event handler for my radio button? I guess that...more >>

Hi, I have the following piece of code. In reality it is a menu which has more options. The main idea was taken from the following link. http://msdn.microsoft.com/library/default.asp?url=/library/en-us/odc_fp2003_ta/html/OfficeFrontPageCreateDropDownMenu.asp <table class="navbar" width=...more >>

Hi! I need to convert the select statement below from VB ASP to C# ASP.NET. Pls. help and thanks in advance. ' Create recordset and query Set rsCHI = Server.CreateObject("ADODB.Recordset") sCHI = "SELECT a.cust_des1, a.des1 projectName, b.job_no JobNo, b.des1 jobName, b.contract_amt,...more >>

is it possible to use c# windows controls the same way as VB Activex Controls in IE pages? We did something like: <OBJECT ID="MyControl" NAME="MyControl" CLASSID="clsid:FFFFFFFF-FFFF-FFFF-FFFF-FFFFFFFFFFFF"> </OBJECT> i'd rather use windows controls than web controls because we may also...more >>

I would like to have the flyout/pushpin affect in an application I'm developing. Am I missing something, or is there no standard control for doing this in VS.net 2003? -- Thanks Wayne Sepega Jacksonville, Fl "When a man sits with a pretty girl for an hour, it seems like a minute. But ...more >>

I am curious about declaring strings in C#. I see strings declared like: string mystring = "something"; I also see: String mystring = "something"; What is the difference? -- Robert Hill ...more >>

I have a tray icon which I have changed. However, I have deleted lots of cache things but still I have the old icon in the system tray. How can I make my new version of the icon appear in the system tray? Where is the cache that I have to delete to make it work?...more >>

When executing the following code ArrayList list = new ArrayList(); try { //Make sure connection is open if (!connection.State.ToString().Equals("Open")) connection.Open(); DataSet list = new DataSet(); SqlDataAdapter da = new SqlDataAdapter("select " + m_TableSerieColName + " ...more >>

What is the best way to work with multiple db connections? I mean that I ahave an app with a TreeView on it and for each node(if he has some props)I want to use a diffrent db (MsAccess) connection, what i did is that when I press a node I verify the conditions and if they are OK I [] conn=new Ol...more >>

Hi, I want to generate dataset class using Visual studio ( I can do this as first generate SqlDataAdaptor and SqlConnection). But can I ganerate it without sqldataadaptor and sqlconnection, because I want to create SqlConnection at runtime(may be i have to delete them after generating the datas...more >>

Hi, Iam currently using asp for sending the newsletter to the subscribers of my website. The list is stored in database. But there are a lot of problem tht I am facing So i was thinking to shift teh code to asp.net in c#. But not able to find a proper code for this.... can anyone help me i...more >>

i'm trying to access the values of a set of controls on one form from another form. how do i do this without breaking the .NET convention of not declaring visible instance fields? do i have to make and assign properties for each control? cheers dave ...more >>

I have a string like string sAge="13"; How Can I cast sAge to a integer? ...more >>