Hi. I'm new to regular expressions, and have what I hope is a basic question. In the file that my code is parsing, some lines may look like :name:colour :name:colour and some lines may just have :name Note that the name and colour would actually be a name and a colour - not the te...more >>

In cases where a variable can be initialized in the declaration or constructor, which approach do you take? Are there any genuine advantages to one approach over the other? Example: public class foo { private int maxItems = 5; private ArrayList items = new ArrayList(); p...more >>

Can anyone point me in a direction for developing apps that integrate into Visual Studio.NET? I would like to build my own designers, and tools bars, etc.. Thanks in advance, Marty...more >>

To all, I've tried to write a program to parse / read the contents of an XML file. Now if the xml file has no DTD references; it seems to be ok (can parse and get values from the tags); but when the xml file has a DTD reference an exception pop out saying invalid Text declaration.... (the err...more >>

return arr.Length == 0 ? null : arr[item].ToString(); Can anyone tell me what this syntax means? Does it basically mean if arr.Length is equal to 0 then return null, else return the item in the array ?? ...more >>

Hi, I need to know how to make smoothes to images with c#. An image with littlies cubes, make the curves more soft. *** Sent via Developersdex http://www.developersdex.com ***...more >>

I'm preparing a form with some controls laid out at design time and some controls added dynamically at run time. During the latter I programatically set the TabIndex of these new controls so that the tab order will flow like I want. But my settings seem to have no effect. Is this a know...more >>

Hi, I have a assembly in GAC that I don't have the source code and I need to have the actual DLL. How can I copy that DLL from GAC? Thanks, Alan ...more >>

Hi All, I have a simple beginer question. What is the real use of interface in c#. I am not getting the use of it. I can declare a class as interface and declare all the methods that need to be implemented. 'Now if you want to use the interface', put them as a derived class and implement al...more >>

Hi, I want to get a char from a virtual key, and if SHIFT key or Alt Gr key is pressed get the char corresponding ( the char in upper case for virtual keys between a and z). I saw the ToAscii API function, and use it, but always ignore SHIFT key. I thought that with the KeyboardState param read...more >>

Hi, In my Console Application, I am accessing sql server using windows authentication and I get this error. Login failed for user '(null)'. Reason: Not associated with a trusted SQL Server connection. How to fix this on sql server side? Thanks, Lalasa. ...more >>

Is there a way to add numbering to the rows in a DataGrid control? I just want to have 1, 2, 3... show up for each row so the user can see how many items they've entered....more >>

Lets say we have a tree control with a user as the root node with child nodes that represent test sets they subscribe to (which map directly to sql tables) and related reports (sql stored procedures returning data viewed in a datagrid) list so User |___TestSet1 |_____Re...more >>

I have a class I'm writing that has aprox 20 methods, a mixture of both public and private. Of the private methods, 3 use a database command object (OleDbCommand) for either inserting data or selecting data. AM I better off making the OleDbCommand object a private field to the class, or pass...more >>

I'm having problems trying to get HTML content from a website. object WebpageContent; mshtml.HTMLDocument MSHTMLobj = new mshtml.HTMLDocument(); WebpageContent = MSHTMLobj.createDocumentFromUrl(http://www.microsoft.com, ""); I get this error: The server threw an exception. I have also ...more >>

Hi when focus is on a cell in datagrid. double click event does not occur. when I double click on rowheader, columnheader then this event fires. I am using DataGridTableStyle in the grid. -- Regards, Lalit Bhatia ...more >>

Hello, friends, I wonder how can I sign Interop.SourceSafeTypeLib.dll a strong name and reference it from my own dll? (I am using C#.net). (Interop.SourceSafeTypeLib.dll is automaticall generated when I reference VSS COM component in my own dll C#.net project) Thanks....more >>

I have a function that is sending a value via querystring to another page by hitting a submit button: private void btnSubmit_Click(object sender, System.EventArgs e) { Response.Redirect("destination.aspx?txtstuff=" + this.txtstuff.Text); } I'm just not sure how to config the submit button...more >>

I have class that also uses a custom editor that, when compiled directly into my project, works just fine in a propertygrid. However, it was necessary to place that class into a DLL, hense the editor was also moved into the DLL and compiled. The issue I have is the the editor is now inactive...more >>

I have been developing winforms for a while. I had an app, that downlods exchange rates from an html page from a website, creating a dataset, and then writing the xml to the local drive. Basically, when I need an old exchange rate, I already have it on my dataset, and whenever there is a new...more >>

I have been working on trying to write a directory watcher service. One of the requirments is that it be able to watch multiple directories, not sub directories of one parent directory, but just multiple directories. I have hit a snag and don't know how to get around it. Basically I read in...more >>

Hi There, I am trying to track down a bizzare problem; It seems that the run time is inserting some JS at the top of the page. <script language=javascript> alert('Specified argument was out of the range of valid values. Parameter name: 13'); </script> Does anybody know where this is co...more >>

hi.. our company does not allow each server to send mail to outside destinations each server's ip must be configured in exchange to do. inorder to avoid that, we want to create a web service on a single server, have it email everything, is it advisible? ...more >>

I'm loading a TreeView with ~8900 root nodes and only a couple of child nodes giving a total of 8910 nodes. It takes several seconds for the tree to display. The method that populates the tree returns in < .5 seconds. Populating the tree in the Load event takes even longer than clicking a ...more >>

Hi Can any one give me some help with this problem please? Here is the scenario: A user submits page 1 which is a web form. After the form has been submitted they are (redirected) onto the next page, page 2. The user then clicks back on the browser. They are now back in page 1 ...more >>

All, I want to know how others deal with long lines of code. Do you care? If so, what rule(s) do you follow? Is it important to you how it looks on printed paper or displayed on the screen? Being able to keep all of the code on the screen without scrolling horizontally is important to me, ...more >>

I'm writing some code that interacts with MSMQ, and am getting in the habit of using try{}catch{}finally{} blocks, but am now running into a problem with un-initialized variables... for example, consider the following method: private void GetQMessage() { System.Messaging.Message oMsg; Sy...more >>

I've taken 4 of 5 exams to get my MCSD. My last exam is the Solution Architecture exam. At least in my experience, I've been surprised at how different the difficultly level *felt* between the different exams. 1/2 way through the web services exam, I thought I had failed (I squeaked it out)...more >>

I have a TreeView on my app and I want to use the arrows to navigate in it but every time i click on one of the nodes and then press an arrow the TreeView losses focus and I am forced to click him again how can I resolve this? THX ...more >>

I have a class inherited from Control, which I want to serialize, since Control is not Serializable, I have had to implement ISerializable. This works but I now want to inherit this base class into a number of other classes, I was assuming that I could just mark them as [Serializable] and use ...more >>

I am using StackFrame class to retrieve File Name and File Line number for printing out into the debug file. Everything is working under Debug build. However StackFrame doesn't capture File Name and File Line Info in release build. Is there anyway or any class which can be used as an alter...more >>

i'm getting the exception: Parameter 'p1': No size set for variable length data type: String. my code follows: OracleCommand cmd = new OracleCommand(); cmd.Connection = oraConn; cmd.CommandText = "ops$sqltime.pa_new_job_no_fn"; cmd.CommandType = CommandType.StoredProcedure; Orac...more >>

Hi people. I have a question - how to show existnig form? I create two forms: Form1 and Form2 in designer. I place a button on Form1 and I want to call a Form2 (better in modal mode!). It's simple to show NEW form: Form Form2 = new Form(); Form2.Show(); but i want to call a form I des...more >>

I have a 4 tab form each with different dataviews attached to a datagrid. On the last tab, I have a dataview attached to a datagrid and 2 comboxes that are bound to the same dataset representing 2 different columns in the dv. When I create cbSecond.BindingContext = new BindingContext(); the...more >>

A year or two ago, I read an article on Microsoft's MSDN or Patterns and Practices site about application optimization when using strings. Some of the recommendations were: use string.Empty rather than "", use string.Compare rather than myString == myOtherString, etc., etc. I have been ...more >>

In working with excel, you use an object array inputData[,] to get and set data. If I have an object array defined as object[] rowData and it gets populated with 53 elements, can I do the following: inputData[0,0] = inputRow; When looking at the debugger, inputData does get the valu...more >>

Hello, I am working on a Windows application in .NET 2.0 that will send emails. I have removed my account from the administrator group to put it in the user group. When I run my application and try to send an email, I get a time out exception. When I run my application as an administrator, the ...more >>

Hi There In C# windows app, .NET 2003 I have a text box with the following event handler: private void textBox3_KeyDown(object sender, System.Windows.Forms.KeyEventArgs e) { if (e.KeyCode == Keys.A) e.Handled = true; } I would expect that the text box would not let me type a but ...more >>

Kindly i want to know how to use window proc from within C# Application is there any tutorial or somebody can help me in doing this...more >>

Hi How do I catch a SHIFT TAB in the key down event of a text box? Thanks Bill ...more >>

Hi, I would like to know if I can set a combobox properties to read-only, I mean, usually the user can delete the items in the comboBox, but I don't want to let the user do that. In textbox properties, if I set to read-only, the user can't delete the contents of the textbox. Chee...more >>

Hi There In a C# windows app in .NET 2003, I would like to capture when the user is within a certain text box and holds down shift then presses tab. Atm, my code is: protected override bool ProcessCmdKey(ref Message msg, Keys keyData) { const int WM_KEYDOWN = 0x100; const int WM_SYS...more >>

I have an API (*.DLL) written with C/C++ language, I successfully import the functions from C# application by : [Imprt....] static extern ................ Now: How can I do the same with Class? How to import an class from API written with C++ language to C# (My application). ...more >>

Hi Does anyone know why i am getting the following error message (line 64) , if i change to objBitmap.Save(Response.OutputStream, ImageFormat.Jpeg) i do not get this error Exception Details: System.Runtime.InteropServices.ExternalException: A generic error occurred in GDI+. Source...more >>

Just wondering about something - I'm relatively new to C# & not quite sure about a few things... I've created a "breakout" style game in Visual C#. I have also made a small web application using VB with aspx pages - basically scripting them like a regular ASP page or a PHP page. I have r...more >>

Hi All, i have a stupid question, but I really don't know How can I do it. I want use icons for treeview from resources, but I don't know , How can I load it from resources to ImageList. Can anybody help me? Thaks Jan ...more >>

I need to get access to the Windows Messages queue (WM_xxx) I have a old C application that sends some messages to all windows on the computer. How can my new C# application receive this message? ...more >>

Hello. I have one small program which I need to convert in C#. The original source codes are written in Fortran 77. Can anybody advice me what is the easy way to do this task? Or may be there is some tools for it? Thank you. ...more >>

This is a really lame question but.... I have a datagrid and I want to create the event and the signature for a ItemCommand, if i double click the datagrid it creates the SelectedIndexChanged handler, but how can i create the ItemCommand without manually adding the event handler and the routin...more >>

I want to verify whether the email input by user exists in the exchange server. How to do that? Any replies / reference provided are greatly appreciated. Thanks! ...more >>

The page always throw the InvalidCastException When i do some conversion . and tell me that "System.InvalidCastException: Ö¸¶¨µÄת»»ÎÞЧ" , how to deal with this problem ? Thanks ! ...more >>

Hi I am using a Timer in the code. When ever the event elapses i populate a datagrid. Without timer it was working okay but i need timer coz of some constraints. After using timer whenever datagrid populates it makes a horizontal scrollbar just above already existing scrollbar and also w...more >>

Hi, Would it be possible to create dynamically in C# a subsite www.subsite.mysite.com? This address should point to an aspx page, let say www.mysite.com/product/subsite.aspx?id=5 Thanks for your help, Olivier ...more >>

Hi, I need to be able to create one or more form(s) from a method that is called from different threads. When this form is created, it appears but it does not receive any message. It looks blank, and when you move your cursor over it, it becomes an hourglass. Can anyone help me with this...more >>

Hi Please help... i am running an application where one of my data validation funtions linked to a Dataset event ColumnChanging keeps throwing a StackOverflowException!!! My code is fine, i just have a deep method/function call going on.... how can i increase the stack from it's default siz...more >>

-- Hi,all if i wirte string str = "\u6570\u636e\u5e93\u64cd\u4f5c\u95ee\u9898\uff0c\u8bf7\u60a8\u91cd\u65b0\u7 67b\u5f55\uff01"; dotNet can recognize as unicode ,and when i console.write() it , it can show right chinese words. but if i read this sentence from TextBox,...more >>

how can I select a row in one datagrid when a row is selected in another grid by clicking on row header? -- Regards, Lalit Bhatia ...more >>

Hi! I have a strongly typed dataset based on a db (SQL Server)... One of the tables contains a column with name: ISO-3166-A2 and data type nchar(2)... The generated code (xsd.exe) in the dataset looks like this: public string _ISO_3166_A2 { .... } VS.NET 2003 identifies this as an e...more >>

Hi, I am using a listbox in a web user control with selection mode as "Multiple". I am not sure how can I access the multiple selected values in my aspx form. Please help. THanks ...more >>