20,284 Topics
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| | I am inheriting my own datagridview (say MyDataGridView) from the standard datagridview control. What I want is that certain properties of MyDataGridView should have a different default value than what its base have. For example, AllowUserToAddRows, AllowUserToDeleteRows, AllowUserToResizeRows properties should have the default values of False; so that when I …  |
| | Just want to ask, how can i create a log file on vb.net, what libraries should i need for this to work,. thanks |
| | Hi, This is my situation. I am entering a value in textbox and click the find button. In the button click i've written the following code, but it does not yield any result. Kindly help. [CODE] dbprovider = "PROVIDER=Microsoft.Jet.OLEDB.4.0;" dbsource = "Data Source = D:\sprrg.mdb" con.ConnectionString = dbprovider & dbsource … |
| | hello all, how can I add a user to a table in a mysql database without datagridview ? I already have this: [CODE]Dim conn As MySqlConnection 'connect to DB conn = New MySqlConnection() conn.ConnectionString = "server=localhost; user id=root; password=test; database=test_addtable" 'see if connection failed. Try conn.Open() Catch myerror As MySqlException …  |
| | Hi, I have a form where i can enter new product. In that same form i have listbox where i show the current product from the database. I want to know how to update that listbox as i enter new product into the database so that user can see the … |
| | I have a program that I wrote that creates a database in SQL Server called States_02 as a sysadmin user. Later on I want to grant SELECT permissions to that database to another user, web I always get an error that it cannot find States_02 or I don't have permissions …  |
| | Hi, i'm doing a registration form and i have problems checking if the username exists in the database. [CODE] Imports MySql.Data.MySqlClient Public Class Admin_Reg Dim server As String = "Server=localhost;Database=escola_musica;Uid=root;Pwd=;" Dim con As New MySqlConnection Private Sub Admin_Reg_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load con.ConnectionString = server … |
| | Hi all, Someone please tell how to print invoice. I dont have printer, is it possible to print a sample bill in notepad?  |
| | i am new to VB.net. just want to check an id number in my textbox if its aldready existed in my database. this is my condition: if textbox1.text = ds.tables("employees").row(0).item("id") then msgbox("ID already exist") end if  |
| | I have a connection string for my SQL database connection called my.settings.GCRConnectionString which was created when I created my dataset for the application. I want to change the value of the connection string but it give me an error saying it is ready only. Is there a way to update … |
| | hi experts During my development progress i was stuck up with a problem. I used a class MyList and with the Help of this MyList the combo box named cboCity was filled with City Code(like 1001,1002,etc..) as Value member and City Name (like Canada,California etc...) as display member. [CODE] Public … |
| | Hi, I have this sort of problem whenever the datatable has an empty cell, it shows cannot find column 6 or depending on the number of the datatable column cell. Why does this happen and how can I resolve this? Thanks |
| | I want to disable shortcuts in a menu. This dont work. Even though I dont have any shortcutkeys it automatically chooses the first letter in every menuitem. This I dont want. I found very little about this on the net. Below is a link where they finally concludes it with … |
 | Hello All, I have 3 combo boxes on my form 1. Doctor Start Time 2. Doctor End Time 3. Doctor Appointment Duration I want a 4th combo Box that will Start from Doctor's Start Time upto Doctor's End Time with the interval of Appointment Duration eg. Suppose the Start time … |
| | Hi, How can I create an array of a class that I have declared? I have this class named parts with properties of frame, engine and date, and i want to know how could I store them in an array .. thanks |
| | please help..i need a basic code in printing using vb.net..the scenario is..im going to print a delivery reciept..the data will be came from my tables...i need the code on printing..basic printing.. thanks in advance rudner  |
| | Hi, I have this fileupload in my program and I want to set it's extension to .xls only, Is it possible? If yes, how can I set it so it's file filter will only be .xls? Thanks |
| | Hi, i have been working on a questionnaire that will allow me to show a question and then have three possible answers in the form of radio buttons. Users will have to select one then hit the NEXT button to move onto the next question. I have managed to use … |
| | Guys i always get an error in this...it says "Syntax error in Update Statement" please help... [CODE] Sub updateaccount(ByVal Username As String, ByVal Password As String, ByVal FName As String, ByVal MName As String, ByVal LName As String, ByVal Restrict As String, ByVal FullName As String) connect = New ADODB.Connection …  |
| | Guys just wondering how can I create a program that does specific actions just by pressing any of the alphanumeric keys on my keyboard instead of the very traditional clicking of a button in a GUI. Example, I want to close the window just by pressing the letter x on … |
| | Hey guys, So, I have a CheckedListBox that will be used to choose what columns they want to select from a database. Is it at all possible to display it in the format of [Table Name].[Column Name]? So far I have this: [CODE]con.Open() theQuery.Connection = con theQuery.CommandText = strColumns theAdapter.SelectCommand … |
| | Hey all, Apologies for this question, as I imagine it will be very easy. I'm creating a form that will be used to update fields in a table. I don't want the user to be able to update primary keys though, so I'm trying to disable the textbox so it … |
| | I am creating a login form together with sql as may databse but when i run may program an error occur at "myData = myCommand.ExecuteReader()" stating that "Connection must be valid and open" what should i do on that to make it fix?? someone help me please thanks in advance … |
| | Hi, My title may be wrong but I would like to explain this process that I need here, Here is my Process, I already have imported excel file and inserted it in the datatable, and then I also validated it's format before inserting it in the database. Now Here is … |
| | Hi, I just want to know how can vb.net validate the format of a certain string for example, i have a string with 2011/13/02, and I want to check if it's format is in yyyy-dd-MM format,. how can this be done? Thanks |
| | Hello Friends, I need to retrive a part of the value present in combobox. Suppose the ComboBox stores the Time values in it. eg. 00:00 00:30 01:00 01:30 Then how can I retrive only the hours value or the first two values separately from the Combo Box. Is there any … |
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 | Hello ! i m developing a application i want that my notification form will pop up just like messengers , anti virus , and other applications forms pop from right bottom of the screen what can i do for it , i m using this code for it [CODE] Me.Location … |
| | hi, am doing my thesis entitled Automatic Exam Scheduling System. this works when button "GENERATE" is click. that would initialize the automatic assigning of proctors and rooms to classid.....plz help...i can't filter the conflicts of proctors and rooms since it is automated...early tnx...ur response will be greatly appreciated..tnx so much:) |
| | hey guys i was wondering if anybody knew how to open an array into visual basic. I have it saving as a text file correctly but i have no idea on how to open it up to use it again. what i have so far is [CODE] Private Sub Hour1ToolStripMenuItem_Click(ByVal …  |
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