I have tried using GetThumbnailImage to create thumbnails for uploading on the internet. However, quality of such thumbnails is quite poor while file size is quite large (this is about jpg's). Is there a way to set a quality and compression level for jpg's, or if not, does anyone know a good c...more >>

I have a SQLConnection, SQLdataAdapter and a Dataset. The Dataset is connected to a Grid. I can insert, update and delete data on the grid, but I can only update my Database if push a button(save : Dataadaper.update(..)). I would like to know if there is a way to update the database after the in...more >>

Hi, I am having a thread hang problem in my c# code. The example on the website: http://csharp.web1000.com/ is a simplified version of my problem. You will see in the form that a method TestThread increments a number in the textbox on the form. TestThread is called from a worker t...more >>

If you return a struct that holds an array of strings, is the array of strings passed by value or by ref? Thanks, RickN ...more >>

I've seen this question asked before, but no answer is visible. Is it possible to determine when the user scrolls an auto-scroll panel? ...more >>

I'm wondering if it's possible to modify an existing program's CIL for the purpose of "patching" that file. If so, would I have to rewrite the entire function I wish to update (using Reflection.Emit)? Thanks ...more >>

How would i count how many times a file has been downloaded? I want to do this C# and ASP.NET. Could any one point me to write direction. Thanks ...more >>

hi, there I have a question about unsafe code. The following is my code: private byte [] a = new byte [100]; private System.IntPtr b; unsafe private Aa() { fixed (void * p = a) { b = new IntPtr(p); } } my question is, after some time, the GC maybe change the posi...more >>

Hi, Can anyone help on how to add a line number section to a RichTextBox? In the same way any code editor have... thanks in advance ...more >>

Is there anyway to send files via ftp using a method other than sockets in C#. I know there are the wininet api commands, but I really cannot find or think of another method. Most of the examples I have seen on the net regarding C# sockets require a server app as well as the client app, but ...more >>

Hi Everybody, I have an issue about deleting an object from an arrayList. I've bounded a datagrid using this code where it will first run through all of the code in loadQuestions() and bind a arrayList to the datagrid. private void BindQuestions() { dataGridQuestions.DataSource= thi...more >>

I have source code for a 3rd party product. The product is written for traditional C++. There was a VS .NET Solution File that was provided for compiling the DLL. I have compiled the code using the VS .NET 2003 C++.NET and am now trying to build some demos to test the features. My quest...more >>

Hello, I'm using COM object in an application. One method used give an object wich type is object. When I use a GetType on its, I have "System.String[*]". I try to convert it to loop on the array of string but I have an exception (Invalid Cast Exception) Here is my code : myFormule ...more >>

If I mark something protected virtual I really get protected OR virtual. I see that the C# spec allows protected AND virtual but the compiler does not. How would I make such a change to the IL? Thanks, -Eric ...more >>

Hi, I am doing the regressive testing for a product that is about to ship, and I would like to know just how throrough my testing has been. What I am looking for is some kind of code coverage utility for c# code that can determine how much a set of code gets exercised during runtime. It seems t...more >>

First, if MSFT is listening I'll say IMO the MSDN material is sorely lacking in this area... it's just a whole bunch of information thrown at you and you're left to yourself as to organizing it in your head. Typical learning starts with basics and progresses through increasingly complex informat...more >>

Trying to determine if I can use C# to write programs to run on the latest version of the PocketPC. The website isn't clear, at least to me. At one point they talk about using embedded VC++ or embedded VB, then they say they are dropping support fo eVB. Another part actually gives an example i...more >>

Hi there, The following code is troubling me: UInt32 nOffset = nStringEntriesOffset + (40 * nIndex); nStringEntriesOffset is a UInt32 containing 2124 nIndex is a UInt32 containing 5213 After the execution of the above line, nIndex equals to : 14036 !!! What the hell is hapening? ...more >>

Hi All I got a datagrid and a ComboBox on a form. I populate the combobox with years for all the data avaiable. When the user chooses a year the datagrid is populated with the specific years information. Problem... when the users scrolls the datagrid with the mouse wheel it work for 2 whe...more >>

When I wrote <summary> comment for a function. I wrote: /// <summary> /// Line one. /// Line two. /// </summary> I want the intelligence mechanism display: Line one. Line Two. but it display: Line one. Line two. They were put in one l...more >>

Hi all, We are developing an asp.net application using C#. Right now we have a set of pdf files. we need to auto-populated some field in the pdf file from the database and show that in the browser. Can anyone please suggest how to do that. Thanks in advance cholan ...more >>

I made a new UserControl, and I want to hide some event (like click..) when the other user use the control view the property page! How can I do? ...more >>

What is the best way to add several pages of text to a readonly TextBox? The text does not change and was created in a Word rtf document but could as easly be put in a ASCII text file. Can this be done using a resource or something? Can TextBoxes be attached to data sources other than database o...more >>

Couldn't I create DataSet in child forms???? Is there any solution for this??? Thanks in advance! E.T. ...more >>

Does anybody can tell which currently working products of Microsoft are written in C# ? Or which products will be written in C# ? I've was told, as an example, that next generation of the database SQL Server will be in C#, is that true ? Regards, ...more >>

I am trying to get the URL from the user and then set it for a webservice. This fails when the URL is not of the right format and gives me URIFormatException. My question is : Is there anything I could use in my form so that I check for teh right format for URL even before calling the webs...more >>

I've got a problem with a System.Net.Socket that is failing on connect. Each time I attempt a connection, 3 handles are allocated, and when the connect fails 2 handles are freed. If left retrying over a long period of time the extra handles build up to several thousand quite quickly. Here's t...more >>

I am in the process of migrating an existing project from Borland C++ to C#. I don't want to just throw away all the existing C++ code, so I need to be able to call C# assemblies from Borland. I want all future development to be done in C#. Does anyone know how I can accomplish this??? ...more >>

Hello, I know C++ but am new to C# so bear with me. I want to create an array of my own class. Something like this: /////////////////////////////////////// class CLoginInfo { public string name; public string id; public string pw; public CLoginInfo()/...more >>

Hi, Is it possible to compile a C# class and embed it into a asp.net page like an activex control? When the client access the page, the embedded and compiled class will be downloaded by ie, and the client-site script can access the methods of that downloaded class. Ofcourse the client sh...more >>

Hi, all I keep getting the message "There is no source code available for the current location" when debugging an application. AFAIK it has nothing to do with MS's explanation (http://msdn.microsoft.com/library/default.asp?url=/library/en-us/vsdebug/ht ml/vxgrfnosourcecodeavailableforcurrent...more >>

Hello: I would appreciate if anyone could tell me why the following occurred in my WinForms app. I am using a User control and everything was running ok until I defined the following property: public int Height // Height of the control in pixels { get { return thi...more >>

Hi All How to get a Hex value of an integre. i tried ToString("%x"), but it didn't return the right value. Any help is appreciated. Thanks Sasha ...more >>

I have a DataGrid. I update a CELL in the DataGrid with the value the user choses from a DateTimePicker. The update is only visible in the grid when I tab over to an adjacent cell. How do I coerce/raise a Tab event after I load the cell with the new date ? Thanks Andrew ...more >>

I have a Stream-object with a serialized Xml-Object. How do I load an XmlDocument with the data from the Stream-object? I have tried the code below but it won't work. Try 1. XmlDocument myXmlDoc = new XmlDocument(); myXmlDoc.Load(myStream); Try 2. XmlTextReader myXmlTextReader = new...more >>

Hi! I use following code to execute SP's on SQL server from my web page: // Create Instance of Connection and Command Object SqlConnection myConnection = new SqlConnection(ConfigurationSettings.AppSettings["connectionString"]); SqlCommand myCommand = new Sq...more >>

if there is a function in a win32 dll, it is definition is int add(int a, int b); how to define that function pointer in C#? thank you very much! ...more >>

I want to write a Update program like Norton LiveUpdate, but I canot how to update the Update program itself? ...more >>

Is it possible to dynamicaly to local and call a function in Win32 dll(not a ..net assembly dll) in C# at run time, for example, a C# program popup a dialogbox to let use input which Win32 dll to be loaded, which function to be called, and what are the parameters to call the function. Thank ...more >>

How to play sound by C# without using WMP? ...more >>

Hi, I'm looking for a way to have my app wait a few seconds before performing the next statement. I've tried Thread.Sleep(), but that makes my app non-responsive sometimes. Is there another way to do this? Thanks ...more >>

How can I call a VB.NET function form C#? ...more >>

Is it possible to use nested MDIContainers? In Visual C#, I want to use another MdiContainer in a MdiContainer. But it gives error, saying that an MdiContainer cannot be child at the same time.... Thanks in advance! E.T. ...more >>

Does anyone know how the number inserted in place of the * is generated? It does not seems to be stored in any files (at least not in the one that are managed by SourceSafe). José ...more >>

Is there an advantage to either of these methods, or is it simply a matter of style? I used to use the "as" method, but later gave it up for the "is" method as the intent of the code seems a little clearer to me. I now have some projects coming up where the baseTypeCollection will contain 5k to...more >>

I'm switching to C# from Delphi. I do a lot of database programming and I need a quick and easy way to copy a failed SQL string into the clipboard. In delphi I use InputBox() which allows me to copy the statement. There is no InputBox() in C# so how do I most easily copy the string to the cli...more >>

I'm creating a custom control that uses the OnPaint event to paint a graphic. The graphic needs to resize itself when the control is resized. Right now, I'm trapping the Resize event to trigger the paint. However, the Resize event appears to fire repeatedly as the control is being resized, which...more >>

Does anyone know how to set the version number in a .NET service? There is no AssemblyInfo settings. Thanks....more >>

In our company, i have three servers; 1) a development server (mine only - here i make daily changes and test my stuff) 2) a test server (for the users to test milestone builds - changes weekly) 3) production server (for when a new build is fully tested, and stable) The problem is that the ...more >>

Hello Experts. I'm a H/W guy (not S/W) In a C++ code, I need to find/identify all calls that the program sends to the Operating System (Linux). What are the definitions, syntax etc... of such a calls that I can trace them ? Thanks, Rob. *** Sent via Developersdex http://www.develop...more >>