20,285 Topics
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 | Hello, I am writing a simple program. I want to select the date and time, it should appear like this: DAYS HOURS MINUTES SECONDS when the time reached set date my timer must stop like this 0(d) 0(h) 0(m) 0(s) and show Form2. But my timer continues to count from …  |
 | Here I present a WebSite containing just Default.aspx. Current snippet code has to do with coloring text in an input field of a web page. The input field is an editable DIV HTML element. While the user writes, there is a partial post (an XMLHttpRequest) to the server. Then the … |
 | Dear Friends, Good Day, I am facing an issue in one of the functions the code is given below if someone can help on this actually this function is supposed to check the work ordewr number if it's nulll then it is suppose to take default value as 4999 and … |
| | ive been develop a project known as ordering system i need to delete data from db by clicking the button ive follow a tutorial from utube and to the exact same code he been used error "object reference not set to an instance of an object" ive double check my …  |
| | Need to program timeseries using RStudio in visual basic. Am trying to use time series forecastingto predict a critical newborn baby’s possible outcome in a intensive care unit so as to alert caregivers to possible detrioration. |
 | I need a help about this i have a log in form design Username Password And my database table Username Password Usertype I want that if admin will login admin form will show. While if employee will log in emlpoyee form will show. How to do that in code. Im … |
| | Hi Guys, im facing problem at cmd.ExecuteNonQuery() kindly correct me wer is the mistake? n how to correct? Private Sub btnSave_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnSave.Click Dim sqlinsert As String ' We use the INSERT statement which tells our program to add the information ' from …  |
| | Hello I have a Web page here: http://www.dimadayoub.net/forgot.aspx for users who have forgotten their password. When I type in the email address of a user who I know exists as an entry in the MS Access database, I get the following error: **Mailbox unavailable. The server response was: Authentication is … |
| | hi, im new to vb.net and recently i am doing a web application on sending sms. anyone has got any codes for sending sms using vb.net? or does anyone know where i can get relevant info for it.  |
| | I'm working with VB.net 2010. I need an windows form where i can select scanner's connected to my pc and then scan image and save it by a save dialogbox.... Waiting for help..... |
 | INGGRIS How to connect device scanner with visual basic, its analogy I made button scan in vb and typing button scan in press scanner live and walk .. how? Help me sir  |
| | I have the following problem. when i pres buttun printpreview (button 5) the the print preview fires up. and when i close the print preview without printing and minimize the form (after close the printpreview), and when i maximize the form again the image in the picturebox is turned 90 … |
 | Hello All, I have experienced a very strange problem in my application. When I launch my WPF application, it loads fine with a window and button, upon clicking the button, it launches another form which is also fine but in this second form, when I click some button, it launches …  |
 | Ingreso una operación donde ingreso 0.25 pero me da por respuesta 25.0 , por lo tanto no puedo guardarlo en la base de datos Private Sub btningresar_Click(sender As Object, e As EventArgs) Handles btningresar.Click tara = CDbl(LblIndicador2.Text) PB = CDbl(lblindicador.Text) 'Calcular el peso: PN = Convert.ToDouble(PB - tara)  |
| | Hi, I am developing my own designer and got stuck at a point where I need to establish or implement some business logic whenever any UI Element is dragged and determine if that falls withing the boundaries of another parent control (specifically TabControl or GroupBox), so that the next time … |
| | Hi I have a broblem with my label text. The code is Public Class Form5 Dim a As Integer Dim currentDate As DateTime = DateTime.Now Dim jaarnu As Integer = currentDate.Year Private timeLeft As Integer Dim WithEvents timer As New Timer Dim milliseconds As Integer Dim monthnumber As Integer Dim … |
 | hello ! i want to develop the keycounter , i mean i want to get the total no. of key pressed by the user in the specific time , i have a code of keylogger , i can use it to get the text in that time period and after …  |
 | Hi, I have one doubt. I did creat a new software from vb 6.0. Database management system. I am using MS access database. that is saved and connectivity in my C drive. And I did out put the exe file. What i need na, i did install this software one …  |
 | Hello!! I am a Chemistry student. I am trying to make a simple database application. I am using DataGridView as database.Data is inserting in DataGridView.But I don't know how to store it. I want to store data from DataGridView to MS access file. I have five Columns. How can I … |
| | Hi I Currently working on a project to schedule installers to do installations. When scheduling the user will select the day of intall and if the number of days the instalation will take or motning or afternoon if its only hafday and I want the application to search which installer … |
| | Who can help me with the following For Each Con As Control In GroupBox1.Controls If Con.GetType Is GetType(Button) Then Con.BackColor = SystemColors.Control Con.UseVisualStyleBackColor = True End If Next Can someone help me to fix it with Con.UseVisualStyleBackColor = True or do i have to do the for all buttons separate … |
| | i am using vb asp.net **error**: there is already an open DataReader associated with this Command which must be closed first. working on this issue for couple weeks now and i have no idea how to fix this. any help will be helpful i am using 2 reader on page … |
 | Hi, Good day, Hope someone can help me on this. I want to display data from my Ms. Access Database. I already display values from my Combo Box from my DB1. DB1 - IDNO / PRODUCTCODE / PRODUCTNAME DB2 - IDNO / PRODUCTCODE / PRODUCTDESCRIPTION / EXPIRYDATE ComboBox - Displays …  |
| | my code is this: Me.Validate() Me.CFTINVENTORYBindingSource.EndEdit() Me.TableAdapterManager.UpdateAll(CFTDataSet) At first I can insert data into the cells and save it... but when i try to edit the same cell with data already saved in it I get this error... sqlcelexception was unhandled There was an error parsing the query. [ Token …  |
 | i want to update row after union conection code conect Dim cmd As OleDbCommand = New OleDbCommand("SELECT tb1_type ,tb1_price FROM tb1 UNION SELECT tb2_supp,tb2_debt FROM tb2 UNION SELECT tb3_name,tb3_price FROM tb3", con) con.Open() DataAdapter1 = New OleDbDataAdapter(cmd) Dim builder As OleDbCommandBuilder = New OleDbCommandBuilder(DataAdapter1) DataSet1 = New DataSet() DataAdapter1.Fill(DataSet1, "tb1,tb2,tb3") …  |
| | Hi can someone give me the code how i make the first and last word of a string to Propr case The folowing gives all words to proper case Dim plaats As String = Replace(TextBox1.Text, "'", "''") plaats = StrConv(plaats, VbStrConv.ProperCase) I want, shall we say: "ohe en laak" to … |
 | i have 3 table i inner join with 3 table and add function but now getting error please help me how to solve the the problem please help me ERROR :Msg 8120, Level 16, State 1, Line 1 Column 'TBL_pur_inv.invno' is invalid in the select list because it is not … |
 | can you help me in my program ? i want to connect my log in form to my database but i dont have any idea on how to connect it .pls help me . |
 | Good day, I am newbie on programming and started to learn vb.net, What I would like to do is to create an attendance system that have a time in and time out , once the person successfully timed in it displays on form the … |
| | Several people have asked how to export data to Excel. This code snippet shows how to export the data from a listview in details mode to a new Excel spreadsheet. Take note of the comments in the header to avoid having orphaned Excel.exe tasks eat up your system memory. |
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