I have a table with two columns field1 int,Field2 and added a column to datagrid on runtime sum (field1+field2) ,upon changing the data in either of the fileds the sum field or column too changes . Intially there will be data in the fields ..and ii try to change the value of column [field1] so t...more >>

I'm wondering if anyone has come across any good components, articles, or books about creating a data dictionary for an application. I need to be able to allow the data dictionary keep the database schema up-to- date with changes in the program. I found ADDA (Advanced Data Dictionary Architec...more >>

How do I tell DataAdapter that Column 2 and 3 are string and not integer? Following is the example data that comes from the .csv file FEDERAL TAX,1084,0000 COREHCR,1084,0000 CLIENT P,1084,0000 The select is: Dim da2 As New OleDb.OleDbDataAdapter("Select * from " & "CorelandGLConversio...more >>

I want to have my SQL Server 2000 database connection string data in an .ini file or a .xml file and then read that string into my vb.net 2005 app - rather than hard code the connection string in the app. What are most programmers doing and how do I read this data into my program on startup...more >>

I just download a DLL from MS website for VS.NET 2005. I added it reference to my project, and I have to add five [Imports] statements on top of each class. It is burden. I found that Microsoft Demo Project don't have [Imports] statement in the class. How could they do that? Thanks...more >>

I am reading from my serial port a 24 bit hex number which consists of 6 place values. For example: 7FED6F which equals 8383855 using the hex2dec excel function. I need to convert this hex into a value I can display in a textbox and also do other math functions with. I looked at the example ...more >>

I have a ListBox with the SelectionMode set to MultiSimple. How can I iterate thru it using a for next loop to fill an array? Listbox For Row 1 = Array(1) Row 2 = Array(2) Next And so on. -- thank You...more >>

Can I call a file (*.html) within My.Resources to show-up in my WebBrowser control? If so, please provide a sample code or a link. Thanks in advance for your help. William Cruz *** Sent via Developersdex http://www.developersdex.com ***...more >>

I am trying to access the registry from a normal user by the following code .... but failed!! However, it works under admin user logon. I think I need to grant some access right to the normal user, but I don't know how! Can anyone give me a hand please? Many Thanks!! ^_^ ' ---- Code sta...more >>

I have the following line which I believe was working before. The error I am getting is: An unhandled exception of type 'System.Data.EvaluateException' occurred in system.data.dll Additional information: Cannot find column [F1]. I am getting this error from the last line of: sTemp =...more >>

I would like to have a limited pool of objects (the objects are expensive to create) that can be enlisted to process items in a queue. Moreover, I would like to be able to have the processing (time-consuming) occur on a background thread. I have two questions: * what is a good way to bl...more >>

Is there a way to update a DataSet Object? I have a Dataset Object (DataSetObj.Tables(0) - one table) that I read in from a .csv file. I normally do the following to get my data from the .csv: Dim DataSetObj As New DataSet Dim DTDepartment As New DataTable Dim dt As New DataTable Dim...more >>

Hi, I am hoping to find out the differences between the System.Net.Mail and System.Web.Mail. Can some nice folks post the differences; or some urls which show the differences? Great Thanks Frank ...more >>

We need a system out there that will be used as a license key system... not for an application in itself but to say an app can have so many users based on the key's installed or such (tied to a database backend in our code) anyone make license key systems that are extensible like this out ther...more >>

I have a fairly simple RegEx code below. I am given a file name, (which I don't control) , and need to change a folder name in it. The code below is choking on the filename not being escaped. "Unrecognized escape sequence" While I can escape the findValue and replaceValue, I do...more >>

Hi, I am fairly new to .net and objects. I learned to create a reader object in method 1, however if I wanted to create multiple select queries in the same module I did not know how to reuse the same code, I would like to verify if method 2 is the right way to reuse the same reader object. ...more >>

Hi people, Let me introduce to how I get this error. I have a form which load all my bills representation depending upon filters which each bill is a usercontrol of my own having some textboxes containing bill's datas. (I already replaced the labels by painting the text instead.) When I...more >>

Hi, I need an application which clears the cache of the internet explorer and found the code for this on http://support.microsoft.com/kb/311289/en Problem: The end of the loop below is never reached so the program is blocked. Reason: Marshal.GetLastWin32Error() always returns code 87 ("Th...more >>

Hi all, I got a problem of getting a display text and value from a item of a listbox Below is how I databind the data into myListBox dt is a dataTable with 2 column, ID (int) and value (string) Me.myListBox.DisplayMember = dt.Columns(1).ColumnName Me.myListBox.V...more >>

Hi, i get the error: "There is already an open DataReader associated with this Command which must be closed first" Thanks Bart ----------------------------------------- Imports System.Data.sqlclient Imports System.Data .... .... sql = "SELECT count(*) FROM pc where lokl='" & w & "';"...more >>

I need to drill down from a directory through all the sub directories and build up a list of files. I have VB6 code to do this but it uses APIs etc and am hoping that there is a better way of doing in .net 2003 I would appreciate any help or examples that anyone can give me Thanks Jack ...more >>

My client put the SQL server in data center. Their branches (located in different area) run vb.net application via VIA VFP . Now, they complaint that there is Timeout occurs. When I test the system locally, it run very fast and fine. I think it is the internet problem . However, I just a SA b...more >>