Visual Basic .NET Forum

I have many ComboBoxes with DataSource set to a binding source which is a list of values and display text. My requirements for these ComboBoxes were: - limit the user to choosing items in the list only - if the user selects an item, then changes their mind they should be able to delete the selected item so that the combobox is blank and no...

There are some List of items in my ComboBox Collection to choose the necessary on run time. But on Run time, I can also write the value on the combo text and it is also saved in the database. I dont need anything to be changed on the combobox. I need only the items to show in the dropdown list. No other items can be added to the database...

Could someone please give an idea about PerformClick()?

When I use Visual Studio 2010 to debug Visual Studio 2005 project, I get some error prompt out, seem like not support it. So we have a license for Visual Studio 2010, but we still want to maintenance the project is develop by Visual Studio 2005, can I down grade the license to Visual Studio 2010? Anybody know it?

Syntax error (missing operator) in query expression 'Serial Number = 'L3FW341''. The Serial Number field is declared as text in Access Db. I am not sure which operator is missing in my command! Below is my code: Cmd1 = New OleDbCommand("Select * from Asset Details where Serial Number = 'L3FW341'", Conn) Da = New...

I'm using VB.NET (MS 2005). I knew how to add buttons on Run time and I know How to change the position of the button on Runtime. dragging = True beginX = e.X beginY = e.Y But I am adding many buttons in the forms. Its not practical to code each button. Is there any code to control all the buttons using a common...

I am using vb.net,is it possible to change the size or place of a button at run time.I meant we can click and drag the button to increase the size or move? could someone help? Thanks in advance

Suppose, i have a button(button1)in form1. Now i have opened a new form. I want to display the same button(button1) from form1 to form2. Please help.. Thanks in advance

hi.. i'm actually developing monitoring application based on sms.it have 1 monitoring application and 1 for remote.my problem is how i can control the remote site from the monitoring application based on the sms that received.thanks.. here's my code.. Dim rxbuff As String

I am gettting the following 2 errors: Invalid attempt to call Read when reader is closed and sometimes Invalid attempt to call MetaData when reader is closed when attempting to read from a sqldatareader object. What I want is to list groups in listview. The last column is "Total Numbers".

I had created a program to add context menu on windows explorer.Now i need to right click on any folder and select menu "Copy Path" then the folder path will be send to my application's text path..Is it possible?

How to display canvas element of HTML5 in Visual Basic .net 2010 webbrowser (I try in framework 2 and 4, WebBrowser version 2 and 4)? It seems that VS2010 not support new version of HTML. In Microsoft Web Browser - "AxWebBrowser" didn't work too. Any idea to make this thing work? Thank in advance.

guyes, i am trying to write the application which saves the web page in html format on local path. But this aspx page contains the 3 classic asp pages,so i am not getting any help to make this possible. sample code Dim myWebClient As New WebClient Dim cred As New NetworkCredential("***removed***", "***removed***") ...

I have a textbox,it should display something like "please enter your name" by default. The default text must disappear when i click on that textbox. Could someone please help..

I've got a program for books. An author can be selected: after selecting the author a combobox appears which has a list of books by this author, click on box and it drops down. Now before selecting a book the mouse is moved up and down the list and the focus goes on to one item after the other. I want to be able to catch the item the mouse is over...

Hi! I have an application in VB. In a single form are lots of labels with atleast 3 different sizes. What I want to do is, when I resize the form or maximize it, all of the labels and pictureboxes int the form are also going to be resized. How can I do that? Thanks!

In a form, when I cut a control (a label) which has an event attached to it (click event), i noticed that the event attached to it doesnt work anymore when you paste it (the label I cut). why? how to resolve this?

hi. i want to update a row in an ACCESS DB in vb.net using sql query. the way to point to the row is using the primary key. the problem is that i was an error saying that there is a data type mismatch in criteria expression. the primary key type is auto-increment. when i change his type to text, i haven't this error anymore. below is a part of my...

Hey guys,i am a newbie to VB, i created a database with MS access 2007, the DB has two tables: Case and Phone Number. (each case may have more than one phone number). the tables are linked. in access, the forms work fine, but when i designed the form in VB 2010, it behaves funny. when i enter data into the caseform, it doesnt seem to link the data...

Hi! I Have a form created in vb and disable resizing it. Initially I also disabled maximizing it and set the max and min size to the default size of the said form. What I want to do is when I maximize the form, all of the widgets in: there are 2: label and picturebox will also be resized and centered regardless of the size of the user's screen...

Create a font size increment application that displays Size in label and increases the font size of the label in intervals of 5 starting at size 10 and ending at size 50. Here is my code: Dim intCount As Integer, intStart As Integer, intEnd As Integer Dim intStep As Integer Dim intSize As Integer intStart = lblSize.Font.Size = 10 intEnd...

I am using vb.net 2005 and access in back end. my code is :

Could someone please help me to decrypt password from database. Here is my code to encrypt password Dim a, enc As String Private Sub encrypt(ByVal a) Try Dim encData_byte() As Byte = System.Text.Encoding.ASCII.GetBytes(a) enc = Convert.ToBase64String(encData_byte) TextBox4.Text = enc ...

how to retrieve an image from SQLserver database with the help of SqlDataReader into a picturebox

Kamya, I have a problem in displaying the records from the database table after character matching from the combo box in crystal report.I m using combo box as dropdown. I have used this code on the text changed event of combo box: CrystalReportViewer1.ReportSource = New rpt_custsale CrystalReportViewer1.ReportSource =...