20,285 Topics
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| | how to select an item in the combobox and then put item quantity in the textbox. and how to price the combobox items. Really need help .. Next week is my system defense.. Thank you  |
 | need help for factorila within range if you entered 3 in textbox, This will appeared in Listbox 1! = 1 2! = 2 3! = 6  |
| | hi everyone can someone help me on vb.net code on how to load selected row from datagridview and transfer in to combobox or radio button.. i will appreciate your help so much |
 | I am currently creating a product lookup system for a project of mine, however from reading around it has come to my attention that an OLEDB connection will not handle the SQL query below as it will not handle more than a simple "SELECT, FROM". Table: tbl_ProductInformation Field: Product_Name CurrentEntry … |
 | Anybody who knows how to change word or character in kanji to katakana or vice-versa. I'm using 2 textbox to do this, the first textbox is for katakana and the second textbox is for kanji. What i wanted to do is, whatever i typed in the kanji textbox it will … |
| | Hey everyone. I received this sql server error and I can't figure out where the trouble is: Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code. Exception Details: …  |
| | I have a problem. I want to show two different value in same button. Here is the image of the report---- https://ibb.co/wrrDSDX Try If Not String.IsNullOrEmpty(ComboBox1.Text + TextBox1.Text) Then Dim keyword As String = Me.ComboBox1.Text + TextBox1.Text.Trim() Me.LeaveInfoBindingSource.Filter = "(LeaveCategory LIKE '%" & keyword & "%')" & "OR Convert(PersonalNo,'System.String') LIKE … |
| | This application was sending out orders without errors when smtp wasn't secured. Now the clients webmail server was changed to ssl. After making the changes the server times out. I did some research and found this .ConnectType = SmtpConnectType.ConnectSSLAuto I'm anable to assign the SmtpServer.ConnectType = SmtpConnectType.ConnectSSLAuto. This is my …  |
| | Hello to all. I am developing software in vb.net for sales invoices. Where i need to import invoice data from excel file to vb.net Grid Data View and then save into access db. I will use db data in future for creating customer invoices. I have code that import excel … |
 | Hi all, I have a new project with vb.net. I need to always connect with older program that run in foxpro, i need to get dbf table and convert it to mysql table. Can anyone help me ?  |
| | Please i have a textbox, a button and a listview. The listview contains a list of items let's say 20 items. When i enter 3 in the textbox and click on the button, the first three items should be removed likewise if i enter 10, then the first 10 items … |
| | alright here is my issue i dont know how to even start this problem iam still new to vb so i need lil guidance and help in the right direction. here is the problem : Use a one-dimensional array to solve the following problem: Read in 20 numbers, each of … |
 | For this particular sub I type the customer id in a text box and then click the button, then I'm trying to get the relative information pertaining to that id. Not sure what I am doing wrong. Comes back with an error message of system.data.sqlclient.sqlexception Recursive common table expression '[customers]' … |
| | Hello, I'm a beginner and I created a log-in form in VB.net using Windows Form and configuring the Settings of the project. I need help on how can I prevent the user from accessing the other parts of the program if they haven't registered yet, as well as deleting the …  |
| | So, I created a program in VB.Net with Windows Form and I want the user to be able to create a new user, limited to 5 user accounts only. I also want to know if it's possible to change password and delete user accounts. Can I make it so that … |
| | Hi, I'm creating a project using VB.Net Windows Form and I want to create a Log-In form that can **Add New User (Limited to 5 User Accounts), Delete User Account, and Change Password**. I want to use Microsoft Access with it. What are the codes I should use to create … |
| | Through Web Search I found [this link](https://www.daniweb.com/posts/jump/1740388) but I want to know is there a way to do it so the sub items in the dropdown would be colored? |
| | The panel has controls like labels, text boxes, list view and pictures boxes. which is probably more than four pages. I have tried all my best still i cant print all the pages. i surf online for help and found this code. the code works perfect by printing all the … |
 | Hi there I’m learning vb.net and my main outcome is to be able to find out how to create from scratch custom GUI controls like 7 Segment displays in vb.net mind you and once I have accomplished that to be able to connect the hardware to a serial port like … |
| | I am trying to apply an automatic scrolling down and up in Datagridview Scrollbar. I've seen a related topic (using scrollbar panel) but I dont know how to convert for datagridview auto scrolling up and down. I'll be using Timer for autoscrolling. Here is the code from another topics forum. … |
| | I have to Create an application that enables the user to create a file named grades.txt in which to store grades. The app should allow the user to write to grades.txt file: student number, student name, surname, subject, individual assignment grade, group assignment grade, test grade. When you click Create … |
| | ##**What can you tell us about XSD file in C# ?? Explain in Details..**## |
| | hi, I have a vb program that wants to retrieve data from MySQL dbase. this code is working fine : Dim vDATE As String vDATE = mDATE.ToString("yyyy/MM/dd", System.Globalization.CultureInfo.InvariantCulture) Dim connstring As String = "server=xxx.xxx.x.xx;database=dbname;uid=idko;Pwd=passko" Using con As New MySqlConnection(connstring) con.Open() Dim query As String = "SELECT issue_date, inc_date, exp_date, total … |
 | How can I get internal HDD_DETLAIS = SerialNumber, Model, Manufacturer,TotalHeads ...... etc. Please help me.. Now my problem is my code run ok, but when I insert external HDD or pen drive then showing the last counting device Details please help .... i want to show only internal HHD device … |
| | My program fail to generate the auto ID on my text can help me. Private Sub getNextNumber() If Not app.State = ConnectionState.Open Then 'open connection app.Open() End If Dim da As New OleDb.OleDbDataAdapter("select top 1 ID from ADMIN ORDER BY ID desc;", app) Dim dt As New DataTable 'fill data …  |
| | Hello all, I've actually seen a few posts floating around the web (most of which are rather old and none of which were solved) about the same question that I'm having which is this: I have a combobox that is populated with movies with a number corresponding to where it … |
| | Hello, I have a ComboBox in my WinForm which has data from SQL server (used LINQ to bring up the data). I'd like to have an option just like AutoComplete in VB.NET but not only by the first letter but for a search LIKE. For Example: My ComboBox has there … |
| | I have looked on the web for a solution to print scrollable panel larger than can be fitted on the screen but couldn't find any solution and it looks like that many people has this problem! PrintForm (printform powerpack component) can not do this because it only capture that part … |
| | Hi guys, Am developing a clinical management system in VB.net and using Microsoft Access for the database. Everything else is working very well. But the login code is not working. It's throing an error message "Object reference not set to an instance of an object" on line 12. Below is … |
| | This was a query raised by one of a forum members at another site, where he had a worksheet filled with random numbers, and I have already answered that query [at my post here](https://vbacoder1962.wordpress.com/2019/07/15/extracting-cell-phone-numbers-from-random-strings-of-variable-length/). You may go through that post and read the logic behind the code.  |
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