vb.net

How to AutoSum in Excel using VB.Net

Via VB.Net, is there any way to access the AutoSum feature that Excel has? I have a spreadsheet that I create and populate via a datatable using my application. I know how to sum based upon a predefined range (e.g., .cells(cnt + 1, 21).Formula = "=Sum(U3:U" & cnt & ")") but is there any way that I can just call a cell in my worksheet an...

setting maximum length in a gridview

Greetings Everyone..i just wanna ask is it possible to set a maximum length in my field in gridview? Below is my gridview sample that retrieve a formatted html in my database..All i want to achieve is to limit the maximum length of characters i.e "50" then automatically create a pagination for the succeeding characters..to be posted in...

"File in Use" error from vb.net

When I try to connect to a database that was previously opening with a SQL connection I get a "File in Use" error. Process Explorer tells me that sqlservr is still holding the file. Any ideas on how to get sql to release the file from within the vb.net 2010 code? ...

I Need Help Deploying a Winform Application Using Setup Project

When a user click the .msi, i want a folder called "Your Files", which comes with two small images by default, to be created in C:\Users\YourName\Documents. In short, MyDocuments. What i did is put the following code in program.cs: string myDocuments = Environment.GetFolderPath(Environment.SpecialFolder.MyDocuments); string downloadAr...

Is it possible to create an app in VB6 that read/writes to a database hosted on a web server?

I was just wondering if it's possible to create an app that interacts with a database hosted on a web server... or is it only possible using VB.NET? Also if it is possible, is there any good documentation or tutorials I could reference? ...

Why Does CascadeWindows win32 function throws an AccessViolationException on windows 7

Private Declare Function CascadeWindowsNative Lib "user32" Alias "CascadeWindows" ( _ ByVal hwndParent As Long, _ ByVal wHow As Long, _ ByVal lpRect As Long, _ ByVal cKids As Long, _ ByVal lpkids As Long) As Integer calling: CascadeWindowsNative(Nothing, &H4, 0, 0, 0) ...

How to pass strings By Ref from VB.NET to VB6 OCX?

Hi. I need to pass 2 strings from VB.NET to an OCX written for VB6. VS2008 put a wrapper on the OCX, but while the routine is called, the string parameters are not correctly received. I do not know why but I am guessing that it is because, as I understand it, in VB6 parameters are passed By Ref as a default while in VB.NET, parameters ...

Running a batch file

Hi, How can I include a batch file or an .exe file in my setup, that runs after setup is complete? Thanks Furqan ...

vb.net convert string to date

hello, how do i convert the string 30.10.2009 in date? (dd.mm.yyyy) thanks :> ...

Counting Word Frequency (most significant words) in a String, excluding keywords

I would like to count the frequency of words (excluding some keywords) in a string and sort them DESC. So, how can i do it? In the following string... This is stackoverflow. I repeat stackoverflow. Where the excluding keywords are ExKeywords() ={"i","is"} the output should be like stackoverflow repeat this ...

Regex email address validation fails if Underscore character present

Hi! I'm very new to Regular Expressions, but I thought it'd be the best way to validate email addresses entered on my form. My Regex works, except if the email address entered has an underscore character (_) in it. Because of my lack of experience with regular expressions, I'm not sure where in my pattern I'm supposed to add the offen...

Microsoft Chart Controls Assembly reference: howto move it to web.config

Currently, when I want to use Microsoft Chart Controls on a website, I need to add the following onto every aspx page where I want to use it: <%@ Register Assembly="System.Web.DataVisualization, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" Namespace="System.Web.UI.DataVisualization.Charting" TagPrefix="asp" %> ...

Reference to a non-shared member settings error

I have added a settings file to a project but whenever I reference one of the setting variables I get the following error: Error 2 Reference to a non-shared member requires an object reference. C:\Development\PhoenixApp\Process\CreditCardProcessing.vb 67 77 Process I had to manually add this in a merge conflict and the settin...

Setup Project Does Not Create File System Folders During Installation

I want to create personal folders during installation. I did the following steps: Right click on your setup project -> View -> File System Right click on node “File system on target machine” -> Add special folder -> User’s personal data folder Right click on node “User’s personal data folder” -> Add -> Folder -> typ...

Problem in reading from text file in my code

Using Microsoft Visual Studio 2008: ' Create an instance of the open file dialog box. Dim openFileDialog1 As OpenFileDialog = New OpenFileDialog ' Set filter options and filter index. openFileDialog1.Filter = "Text Files (*.txt)|*.txt|All Files (*.*)|*.*" openFileDialog1.FilterIndex = 1 openFileDialog1.Multiselect = True ' Call the S...

Best way to view Crystal Reports on the web

I am trying to view Crystal Reports(.rpt) on a Visual Studion 2008 VB.Net web page and am having some problems. I tried using the CrystalReportViewer control but this is very slow for me. Just to view a 768 KB rpt file in took over 20 seconds and another 15 seconds to load a page when I clicked the next page button. Am I doing somethi...

Remove row from DataSet if bound table is sorted

I have a DataGridView that is bound to a DataSet and I allow someone to remove a row from the table and I remove the row from the set. My code looks like this: ds.Tables(0).Rows(dgCourseList.SelectedRows(0).Index).Delete() My problem I found is if the grid gets sorted the index of the rows no longer corresponds to the indexes in the D...

how i can deal directly with html page contents in vb.net

how i can deal directly with html page contents like counts the attribute in each tag and sort these attribute ...

TargetInvocationException when handling a COM Event

I am developing a COM dll library, and I have a little vb.net (vs 2005) application just to test it. I had my object declared in the application as Private m_VarName As MyLib.CMyComClass So far, so good. But now, I need an event to inform the application of some things, so I implemented such event in the COM dll, and changed the...

find ALL methods of getting current date/time in VB.net

I have a 500K+ lines vb.net app, written by 10+ different devs over the past 5 years. Many times it gets the system time and/or date and relies on it. Now I have to re-run real cases thru the program for regression testing purposes, and it screws up cases where the date/time matter. My fix is easy, just replace all the areas in the pro...