Hello, I have following structs public struct User { public string Username; public string Password; public string[] Permissions; } public struct Users { public User[] RemoteUsers; } when I Serialize a Users struct I get following File <?xml version="1.0" encod...more >>

Does C# have any classes or methods for transfering data through serial and parellel ports? I know that no hardware can be accessed directly in windows XP and other NT based OS, but I think, it may be possible to use windows too access ports Does any body have any information please?...more >>

Hi Folks, I'm trying to call a C# method from assembler language. Specifically, I'm trying to persuade the Turbo68k emulator to interface with C#. This is where the function is called in assembler: push edx // Contains 'Data' parameter. push ebx // Contains...more >>

I want to know if "int" is a primitive type, or an object? For example, the following two approaches yield the same result. > int t1 = int.Parse(TextBox2.Text); //method 1 > int t2 = System.Int32.Parse(TextBox2.Text); //method 2 And people said "int" is a C# alias for "System.Int32". If t...more >>

I want to access online graphics for a networked application I am writing & am having trouble using the WebClient for this. Basically I want the users to be able to enter an URI to a file either on their local machien or on the web which they can then use as their icon. I wasnt planning on saving...more >>

What is the major differences between array and collection? For example, ArrayList. When to use which? I think array is static container, but collection is dynamic container. The drawback of array is to define the size in declaration, but not in collection. Please advise... ...more >>

Hi All, I am trying to access a mapped network drive from a service that I have created. The service needs to create/delete folders/files on a network drive. When I tried to connect to a folder on mapped network drive (eg. N:\Storage that corresponds to \\FS1NS\SharedDir\), I get an error ...more >>

Hi, I have a small function, that returns a string[], inside the function, there is an arraylist[], being processed. At the end of the function all the elements of the ArrayList are copied to my returning array, using ArrayList.ToArray(type) method. But i am getting an error message that ...more >>

hello. i'm trying to implement IBindingList to wrap DataTable (like DataView) with hierarchy capabilities and bind it to DataGrid. The problem is i don't know yet all the stuff i need to know. the current problem - what should i return in the IList[int index] indexer? definetely not DataRo...more >>

Given a file, how do I know if it's ascii or unicode or binary? And how do I know if it's rtf or html or etc? In other words, how do I find the stream type or mime type? (No, file extension cannot be the answer) Thanks *** Sent via Developersdex http://www.developersdex.com *** Don't just ...more >>

I have a DataTable in which one of the columns is a GUID. When I go to add a new DataRow, how do I generate a GUID? I see that there is a datatype of Guid, but it appears to me that I must define the guid value that I am wanting. Is there some way to generate this automatically? After I ...more >>

What is the differrence between using the "using" caluse outside of the namespace definition and inside the namespace. Example Outside: using System; namespace Example.Outside { } Example Inside: namespace Example.Inside { using System; } Any help is appreciated. -rythm ...more >>

If a program works with decimal points the system country setting requires commas as a decimal separator the number of decimals = 2 then two positions are added to the numbers when displayed my question is how do I stop that from happening? ...more >>

2 questions... The documentation shows a "property" call Now, which returns the current date and time, but it is not valid for how I am using it. If you declare a field as a DateTime, but never populate it, how can you tell if it is null?...more >>

The DataTable contains, for example, only one column of lets say Person class. Person class has three fields, and a constructor that takes a single string and parses it over those three fields. Now, how do I modify the Person class (which interfaces to implement) so I can bind my DataTable to...more >>

Hello, If you have a method which test field to see if it is a valid date and either returns a DateTime value which either has a valid datetime or it has null, how can you test if the value returned is null? I tried and I get an compile error "Can not be applied to operands System.DateTime an...more >>

Hi, I created an access database and I am using ado.net to access it. Now I am trying to create an update statment but I am having some error when so fields are empty. Here is my statment which read a set of textboxes from a screen and tries to save them. string sSql; OleDbConnection co...more >>

Environment:- Framework 1.1 DB: SQL Server 2000 (SQL Provider) OS: Windows 2000 Language: VB.NET I'm trying to do mass inserts/updates. Using Transactions. The table hierarchy contains 3 levels (TL1, TL2, and TL3): Here is what I'm trying to accomplish: 1) Start Begin Transaction (i...more >>

I want to convert a string to an integer, I tried the following 2 methods and they both worked. But I dont understand in method 1: int.Parse(...), "int" should be the primitive type, but it can operate a method Parse? int t1 = int.Parse(TextBox2.Text); //method 1 int t2 = System.Int32.Parse(Te...more >>

I am using C# / ADO.NET to create an Excel sheet: This connection string works: "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" + filename + ";" + "Extended Properties=Excel 8.0;"; This connection string DOES NOT: .... "Extended Properties=Excel 8.0;HDR=YES;"; => Error: Could not find ins...more >>

I create an Excel worksheet in C# (should be similar in VB) Connection String: "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" + filename + ";" + "Extended Properties=Excel 8.0;"; Create string: "CREATE TABLE S1 (Dt date, St char(40), Cr currency)" Works fine, but the worksheet is named ...more >>

Hi, Is it possible to get the current cursor position and append text from that point in a rich textbox? Thanks in advanced. Eddie ...more >>

Hello, VB has an IsDate function which determines if a text field is a valid date. What is the equivalent in C#? Thanks in advance for your assistance!!!!!!...more >>

I've got an outlook add-in. I'm running Outlook XP, .NET 1.1. My Add-In is written in C#. I'm trying to trap either the Application.ItemSend or the MailItem.ItemSend event to put up a dialog and possibly let the user cancel the send. I can get the events to fire, but setting the Cancel fla...more >>

Hi People Few day ago, somebody sent me this code. ArrayList al = new ArrayList(); //Insertar datos en la lista: al.Add("Ejemplo1"); al.Add("Ejemplo2"); It can store two string in ArrayList, my question is ArrayList can Store Classes ? Thanks. ...more >>

Hi, I want to put a type conversion in my class, but I don't want the conversion to be usable in a passed parameter because it makes no sense. class cData { string s; public cData(string s) { this.s=s; } public static implicit operator cData(string s...more >>

Is it possible to change this function into a string override? So I could just say d.ToString() Patrick private string reformat(double d) { NumberFormatInfo nfi = new CultureInfo("").NumberFormat; nfi.NumberDecimalSeparator="."; nfi.NumberGroupSeparator=""; return d.ToStri...more >>

Is it possible to do something like what this chapter excerpt shows, except for just a regular non-remoting bunch of code? http://www.microsoft.com/mspress/books/sampchap/6172a.asp The reason I ask, is that I have implemented everything as is from the chapter above, but none of my attribute ...more >>

what function do i use to remove leading and trailing space? " ABC " i want the string to be "ABC" thanks...more >>