20,278 Topics
 | |
| | Lets say now i want to use Select Case For some purposes as shown below: Here, i have two arrays, One is called strmac() and another one is mac(). strmac() is used to store the variable read from the [COLOR="#ff0000"]database[/COLOR], it is used to read the Machine ID for example. …  |
| | Hi, i have two textboxes one for month(2digits) and one for year(4digits). i want to validate them so users cannot input dates in past. what would be a better way of doin this. ps. it is for winforms thanks  |
| | Hi There, I am experiencing a very weird problem with a visual basic.net program I am creating. The app uses an access database. Note: I am an Australian user so use date format dd/mm/yyyy Problem: my frmMain has a list box that retrieves a list of date values from the … |
 | hi friends, i need your help in my project. i need to group my dropdownlist data. can anyone help me to get "optgroup" functioning in asp.net 1.0 using vb.net |
| | Dear All, I m trying to read and upload the eml extension file which is saved in my local hard disk from my windows application form using Vb.NET. But I failed to do this, i Done the same using ASPOSE.dll in ASP.NEt application. Please guide me or suggest me some … |
| | Hi I am having a problem coding a save/change button on my form which I want to be able to edit a record in a text box then save the changes made, it will save it in a sequential dat file. At the moment it will just overwrite the entry … |
| | Hi I am trying to run the code below and get Exception From Hresult 0x800A0046 (CTL_E_PermissionDenied) error only on Button 2. Button 1 does what it is supposed to ie remove all files found in the folders that are older than today. Button 2 should remove all files regardless but … |
| | Im pretty new to VB, using .Net 2008, and I am saving two DataGrids, ComboBoxes, and Textbox to a txt file, using "*99*" as a terminator between each, but I am having trouble reading it back into each field. Heres my open file code. [CODE] Private Sub openbtn_Click(ByVal sender As … |
| | Hows it going everyone. Im trying to compare two tables, and display the rows that are not in both tables in a DataGrid. Im using Visual Basic 2008, and created a query in the TableAdapterManager, but when I try to call the query, it is not displaying the results. Shows … |
| | Hello :) Iam using windows application, I want to know how can I move from textbox1 to textbox2 through the tab control key or enter key..  |
| | I have a basic program that access a local Access database, reads data from it into a datagrid, and then allows me to manipulate it by using textboxes. I can add, delete, and search for records. I want to remove the textboxes from the equation completely. Is there any way … |
| | can u spot the error in this code.. [CODE] Private Sub fncExcelExport(ByVal strSql As String) 'fncExcelExport("SELECT * FROM tbl_rop WHERE Name_User ='" & (TextBox1.Text) & "', Date_of_birth= '" & (TextBox2.Text) & "' , Hobbies='" & (TextBox3.Text) & "' , Phone_Number ='" & (TextBox4.Text) & "' where Name_User = '" & … |
 | To have bonus mark in my project i would like to register my application... I want a msgbox to appear after i login which tell him/her that "this application is not registered".. i want to put a counter which after 5 mins a msg box will appear which he/she must …  |
| | Hi, I am not really familiar with framework yet, I am just a beginner. What I am trying to do here is to add a clipboard button (using windows copy icon) placed in the framework in the report viewer. So I have a crystal report open in the report viewer … |
| | Hi there I am creating a system where I link a .net app to a oracle db and am currently working on linking it to the database so that I can add new users for oracle here is my code: [CODE]Imports system.Data.OracleClient Public Class Form1 Dim OracleConn As New OracleConnection … |
| | [code] Private Structure word Dim b1 As Byte Dim b2 As Byte Dim b3 As Byte Dim b4 As Byte End Structure Private Function DoubleToWord(ByVal n As Double) As word DoubleToWord.b1 = Int(DMod(n, 2 ^ 32) / (2 ^ 24)) DoubleToWord.b2 = Int(DMod(n, 2 ^ 24) / (2 ^ 16)) … |
| | Formdocs has given me the following code. What I am trying to accomplish is make the form undeleteable without a password. While the code kinda works all you have to do it select cancel and you can delete the record. any Ideas other than go back to class and pay … |
| | Hello, everyone... I'm a novice from Indonesia. Would u kind to help me? I need to convert a textfile containing integer data as running 2D line, as u can see if we press ctrl+alt+del in our comp? text goes like this: 78 79 67 90 67 89 ... soon and … |
| | I'd implemented what i need for the project but i found that the code is lengthly and not well practice... Some more i found that the code keep repeating in some kind of format..... However, at the moment i still thinking on the way to simplify it...Thanks if anyone can … |
 | I have a project that requires a barcode and other information to be printed onto a label using a Thermal Printer (i.e. Zebra, TEC) I have a print routine that will print plain text using "Generic Text" driver and has been tested for output using Dot-Matrix printers in other projects. … |
| | Hi All, I'm doing a mini project which is adding items to the listview and calculate the total price in a label outside the listview. How do I print the final receipt with all the sold items listed and the total etc Thanks in advance for ur help How do … |
| | hey frnds i want to know that how to add Textbox entry into the dataGridView. Suppose I have DataGridView with two Columns- First Column--name Second Column--marks. On the Form-- I have a Combobox ,Two Textboxes ,Button,Gridview. User select roll from combobox,Suppoes he Select Rol number 1 ,I want that on … |
| | i wanted to put a Exit for statment. how can i put it Public Class Form3 Private Sub Form3_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load Dim i As Integer Dim Name As String For i = 1 To 10 Name = InputBox("Enter the Name") Exit For Name="Done" …  |
| | After several hours of searching the web and the student MSDN archive in Visual Studio.net i cannot figure out through the random blabber of sample codes how to do basic connections using TCP socket connections through a client and a listener. I got the jist that winsock had become outdated … |
| | Hi. I am generating Excel reports for my company using VB.NET programming but have a problem when inserting an image into the spreadsheet and attempting to position it within the sheet. Please see my code snippet: 'Specify cell range for logo and insert the image oRng = osheet.Range("A1") oRng.Cells.Select() oexcel.ActiveSheet.Pictures.Insert(Application.StartupPath … |
| | I really dont know this Program is rite or wrong. but it wont give a answer. if anyone can help me in this Public Class Form2 Dim num As Integer Private Sub Form2_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load Dim fact As Integer num = Val(InputBox("Enter the … |
| | I have a parent form that has a combobox. Whn the form loads I get the data from the db and bind to the combobox. that works fine and here is the code I use in form load to cause this to happen: [code] conn.Open() cmd.Connection = conn da = … |
 | |
| | can anybody tell me.... how to control parallel port, serial port and usb port through vb.net |
| | I'm developing handheld application written in VB.NET, with .sdf database. I have following problem: on one form I have combo box (which relates to the primary key) and several text boxes (other fields in the table). When I enter data in the database I can retrieve data from the database … |
The End.