Answer Questions

• Tulika .NET Application crashes

  In the sample code , show below, we are merging many binary file to a single mp3 file. This process works fine for 4 times , but on the 5th time, the application crashes on br.Read without throwing any .net error. We have implemented try catch blocks also.It gives the system error &H80131315&  Dim fsInput As System.IO.FileStream Dim fsOutput As System.IO.FileStream Dim bw As BinaryWriter Dim br As Bi ...Show All

• dcintern Deleted row detached, but still in the DataTable

  This is a screenshot of VS 2005 at the point where I got a RowNotInTable exception: http://www.commongenius.com/rowstate.jpg Is it just me, or is this supposed to be impossible How can I get a detached row when I am iterating through a DataRowCollection . The row I am accessing was deleted, and accept changes was called on it, so I understand why it is detached. But why is it still in the Rows collection of my DataTable And why is its ...Show All

• gpx Timeouts

  A Treeview is used to select the record to be displayed. On clicking a node a record is displayed. It is possible to click 9 nodes & get the record displayed but the 10th bombs out with a TimeOut message. "Error. System.Data Timeout expired....." On restarting VB (2003) clicking the record causing the bomb is displayed correctly so it is not an issue with that record. I have VERY carefully checked that every "cnn.open ...Show All

• Juke .NET Remoting v/s Web Services

  In terms of performance, is there a difference between Web Services and .NET Remoting when the latter is hosted by IIS. If I understand correctly, in this case they would both be using SOAP to communicate with their clients, and I would like to know if there will still be a performance difference. Hi HBOne, In summary, according to me, if you are using microsoft techs on both the ends (provider and consumer) then go for remoti ...Show All

• Paul Turner Time Control

  Does anyone know where to get the time control that is used throughout windows   For example, it is in SQL Server for scheduling purposes or when you double-click the time in the lower lefthand corner of windows to set the time.  It is that is a little widget that that has Hour, minute, AM/PM and a little Up/Down scroller, that when you place your cursor on the hours, and press the updown button it scrolls through the ho ...Show All

• zdrae Disappearing updates in local SQL Server Express database

  Hi, I created a SQL Server Express database and added it to my project by using "Project|Add New Item" and selecting "SQL Database". I then added a single table to the database and added a single text column to the table. I dragged the table to an empty form which prompted the UI to automatically add a datagridview, a binding source and a dataset, configured and ready to go. When I run the program, I can add data to the ...Show All

• RPriesing How to access forms that have multiple instances...

  I've done this in other languages but haven't found the right way to do this in VB 2005 yet. I have an application that will open up multiple instances of the same form. Each form will have it's own unique name set in the Text property. From the main form I will then send data to the form in which it is intended to be displayed on. I am unsure how to accomplish this task of looping through the open windows and sending data to some object, contro ...Show All

• Adam404 How can I do this?

  Hi, I have an abstract class, and some inheritant classes, in order for the abstract class methods implementation (these methods make sql operations) to work I need to idenfity from which class the method is beign called. Doing it this way could save a lot of code (instead of implementing an interface in each class) Is this possible , is there any other way to make this Not exactly, I'm looking for a way to ...Show All

• Rschraeger Opening Images

  Hi this is a very silly question but how do load an image wthout using a full file path e.g. Dim fs As New IO.FileStream("flower.gif", IO.FileMode.Open) If you want to open a GIF, why not use Image.Load Either way, you can specify a full path, or a relative path to the location of your exe. You can't just find a file anywhere on your system without giving a path. Anything that's in the PATH var ...Show All

• Roji. P. Thomas C# Generics and Constructor Constraint

  Hi I want to add contructor contraint on generic type that accepts string parameter. I know that this is possible class Node<T> where T : new() { public T GenericType; public Node() { GenericType = new T(); } } I need this class Node<T> where T : new(string attribute) { public T GenericType; public Node (string attribute) { GenericType = new T(attribute); } } Is that possible, and how s ...Show All

• dophine Can ActiveDirectory provider be used with Login control?

  I would like to use the new Login control to gather a username and pw. I'd then like to make sure that the user exists in ActiveDirectory with that same username/pw. If they exist then I'd like to check for their assigned roles that were set within the Web Site Admin Tool. I'll be using c# and .NET 2.0. In the scenario above would I be using 2 different providers ActiveDirectory to check the input from the Login control and then sqlServer whe ...Show All

• YorkshireTony .NET2 SerialPort - 100% CPU problem

  Hi All , i'm using .net2 beta1 SerialPort class. the problem is when i first recieve bytes - the CPU is getting up to 100% and stays there. i tried working with the SerailPort in many ways (starting Recieve thread, etc') but it seems that this problem repeats itself. is the read call is synchronous and does not come back until it finish a sample code that cause this without a seperate thread in this case) SerialPort m_SP; m_SP = new SerialPort( ...Show All

• slush_puppy System.NullReferenceException: Object reference not set to an instance of an object

  Hello Guys, I dont know the reason why I m getting this error I fully understand what does this mean....i dont know cant find the solution ...... If you see in the code the probem exists in the foreach statement..... the XMLNode node is somehow getting set to NULL.....It goes into the loop once and second time it just freaks out...The code was working perfectly, it just started like this.......... string path = "Common/"; // Path to ...Show All

• Adamus Turner How use c# ADO.NET to insert the data in sql2005

  using System; using System.Collections.Generic; using System.ComponentModel; using System.Data; using System.Drawing; using System.Text; using System.Windows.Forms; using System.Data.SqlClient; private string strconn = @"Server=WINXP-SP2\SQLEXPRESS;DataBase=my;Integrated Security = SSPI"; private SqlConnection conn; private SqlCommand cmm; private SqlDataAdapter da; private DataSet ds; conn = new SqlC ...Show All

• Sharjeel.Ahmed Security: protect public classes and functions in common DLLs?

  Hello community members, let's assume that my .NET application is composed of three assembiles, one executable and two libraries. All assembiles communicate through public methods, instantiate public classes and so on. I want to prevent anybody from simply linking the DLL and using the public functions in his own application, else, anyone could write own frontends for example, and use our backend functions. What is a common and reliable way to p ...Show All