Connecting To Sql Using Classes?
Jun 5, 2011'A way to connect to SQL with VB.Net using Classes
'This must be a class on its own
Imports System
Imports System.IO
[code].....
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Use LINQ To Filter Collection Of Nested Classes To Yield Dictionary Of Unique Properties Of Those Classes?
Jan 23, 2012I have two classes, one nested in the other. [code]Neither "Name" or "ID" are unique between operations and records.I wish to construct a dictionary using LINQ = Dictionary(Of String, Of List(Of Integer), whereby the keys are uniqe examples of Names in my collection and the values are the collective set of distinct IDs that are associated with those names.
View 2 RepliesVS 2010 Structure Classes So That The User Interfaces Though A Single Class While The Supporting Classes Are Hidden From Their View?
Jun 13, 2012How can I structure my classes so that the user interfaces though a single class while the supporting classes are hidden from their view? I think its best understood in an example:
Public Class MyInterface
Public Economic as EconomicClass
Public Sub New()
MyBase.New()
[code].....
So you might ask why am I even separating them? It's strictly for others who will be working with this interface. I need to funnel them though a logical structure:
interface.Economic.MyMethod
interface.Currency.MyMethod
etc
This way everything is already handled for them in the background and they only need to run the method they need. I don't know if I can have it both ways in VB.NET.
VS 2010 Calling Subs And Functions Within Classes That Are Within Classes?
Oct 24, 2009Here is some example code of what I mean:
vb
Public Class Form1
Private Sub Button1_Click(ByVal sender as Object, e as systemEventArgs) Handles Button1.Click
[Code]....
Derived Classes Cannot Raise Base Classes
Jul 10, 2009I m trying to raise Click event of Textbox explictly but I m getting "Derived classes cannot raise base classes" error.[code]....
View 1 RepliesLoop And Enumerate Properties Of Nested Classes In Nested Classes?
Sep 24, 2010so far i got
code
For Each item As Reflection.FieldInfo In GetType(NameSpace.ClassWithNestedClasses).GetFields
rtfAppend(item.Name & ":" & Tab & item.GetValue(Me))
Next
For Each item As Reflection.PropertyInfo In GetType(NameSpace.ClassWithNestedClasses).GetProperties()
[code]...
which gets me the simple string vars and properties of my top class, but how can i apply this to loop through all sub classes and get there vars and props?
VB XML Classes Vs String Classes?
Oct 13, 2011Searching the internet finds no less than 700 different ways and opinions to accomplish what I'm trying to do, and I would just like to know the simplest, most bullet-proof way possible.
[Code]...
I simply want to extract the string "bar," which is inside <hostName></hostName>I can do this easily enough with simple string functions, but I'd like to do it with one of the .NET XML classes/methods.
Best Pratice In Inheritance - Three Classes Employee, Manager And Salesman. Manager And Salesman Classes Inherits Employee Class
Jul 27, 2010I have three classes Employee, Manager and Salesman. Manager and Salesman classes inherits Employee class.
Employee :
Public MustInherit Class Employee
' Field data.
Protected empName As String
Protected empID As Integer
Protected currPay As Single
[CODE]...
Manager :
Public Class Manager
Inherits Employee
[CODE]...
Salesman :
Public Class Salesman
Inherits Employee
[CODE]...
Now I have created a object of salesman and manager using the following code:
Dim objSalesMan as Employee=new Salesman("xyz",1,2000,5000)
Dim objManager as Employee=new Manager("abx",2,5000,"production")
Is this a good programming pratice or should I use:
Dim objSalesMan as new Salesman("xyz",1,2000,5000)
Dim objManager as new Manager("abx",2,5000,"production")
Connecting PC's In .NET?
Nov 2, 2006I am trying to figure out a way to connect 2 users within my VB.Net application.The goal would be to send strings/integers/booleans from one computer to another that could be translated on the other side. The effect being a multiplayer game, or a chat box or anything of the sorts.If I wanted to connect to a computer here in the office, I couldn't because I can only connect to the shared IP and not the local IP's...
View 7 RepliesAsp.net Connecting To A Sql Database
Feb 14, 2011I'm trying to write a method in VB.net so that when I click a button it queries the database and returns all the values which match a textbox which is located next to the button. I have no idea how to do this, I assume in the onclick method for the button I will need to pull in the value from the textbox, connect to the database and display the results to a gridview?
View 2 RepliesC# - Connecting To DataBase ASP.NET
Jun 22, 2010I have a database in the same workspace, I've tried to connect to this DB using this codes :
[Code]...
Connecting .net With Access?
Dec 30, 2010i have to do a hospital mangment system by VB.net and connec it with a DB and i do that by using Wizard ,the problme is that i dont know how i can validat the data thet the user will enter it and i don't know how to give each patient and staff member a uniqe ID and send it to the DB?
View 2 RepliesConnecting From VB To Access?
Oct 30, 2011trying to connect to my access DB, run a query, and do something with the result set
View 2 RepliesConnecting To A .mdf Database?
Jun 5, 2011I got vb.net 2008 express and sql server 2005 and 2008 express editions whic I downloaded from microsoft website.Now I just want to connect vb.net with sql server 20o5 or 2008.I am using a connection string as
PubConnstring = "Data Source=RAMANSQLEXPRESS;Database=FirmTest11;Trusted_Connection=Yes"
'Create your connection object
Dim objconnection As ADODB.Connection
Dim strSQL As String
[code]....
Getting Error : [Microsoft][ODBC Driver Manager] Data source name not found and no default driver specified.
Connecting To A Dabase?
Apr 29, 2009I am having a problem with my 64-bit Windows 7, where a program I am creating in class (well, a group of us are creating) will not run on my 64-bit Windows 7.I know that problem stems from the Microsoft Jet OleDb connector, and that it's only for 32-bit windows and does not work with my 64 bit (and is not even listed in the Data sources page of the admin tools in 7).So, what can I do to resolve this problem? is there any way for me to connect to the database?I know the connection string is on this line:
<connectionStrings>
<add name="PrioritySystem.My.MySettings.systemDatabaseConnection"
connectionString="Provider=Microsoft.Jet.OLEDB.4.0;Data Source=|DataDirectory|\UserData.mdb"
[code].....
Connecting To A Database?
Apr 14, 2011I'm having problems connecting to a database. I have sql server 2005 express installed on my PC, and i am using the following to code to connect to it.
Dim nwindConn As SqlConnection = New SqlConnection("Data Source=localhostSQLExpress;Initial Catalog=northwnd;" & _
"Integrated Security=SSPI")
[code].....
Connecting To A Different Form?
Apr 1, 2011I have to buttons that I'm trying to connect to. The names are: Search and Schedule. When I'm debbugging, and I try to click on one of the buttons to go to the form that I'm not on, it tweeks out. Here is the code I'm using:
System.Diagnostics.Process.Start("Schedule.vb")
&
System.Diagnostics.Process.Start("Search.vb")
The error that I get is this:
Quote:
The system cannot find the file specified and then it has tips on how to fix it, but none of them help. Am I just coding it wrong or what? I'm using VB 2010 Express.
Connecting To A SQL Database?
Jun 2, 2010Ok I'm finally getting to put on big boy pants and have now moved beyond doing everything in Access (yay me).o here is the problem, can't connect to the Server. created a test button on my form, which is what I usually do with Access so Ican be sure everything is where it needs to be pointing.
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
Dim connetionString As String
[code]....
Connecting To A Web Database?
Sep 21, 2010is it possible to connect to a database residing on a website (eg., MS Access)to get/update data.can we do it by a VB.net windows application.
View 9 RepliesConnecting To Access Db With VB?
Jan 27, 2010Dim objConn As New OleDb.OleDbConnection("Provider=Microsoft.Jet.OleDb.4.0;" & "Data Source=C:\popsCatering\popsCatering.db")
Dim objCmd As New OleDb.OleDbCommand("INSERT INTO personalInfo (Name) VALUES ('test')", objConn)
objConn.Open()
[code]....
when i try to debug i get this error:
OleDbException was unhandled Could not find file 'C:popsCateringpopsCatering.db'.
however i'm confident that the file exists and that the path is correct?
Connecting To Database In .NET?
Mar 25, 2011Dim con As New System.Data.SqlClient.SqlConnection
con.ConnectionString = "Server=iraq\sqlexpress ; Database=stats ; Trusted_Connection=True ;"
Dim com As New System.Data.SqlClient.SqlCommand
com.CommandText = "insert into users values('" & TextBox1.Text & "','" & TextBox2.Text & "','" & TextBox3.Text & "')"
[Code]...
There are new events happen when i adjust the connection string
con.ConnectionString = "Data Source=.SQLEXPRESS;AttachDbFilename=C:Documents and SettingsAdministratorMy DocumentsVisual Studio 2005WebSitesWebSite2App_Datastats.mdf;Integrated Security=True;User Instance=True"
show me error with com.ExecuteNonQuery()
Connecting To IBM / ISPF From .net?
Apr 7, 2012I want to connect to IBM mainframe thru VB.net and run jobs present in mainframe directly through VB.net and view the output back.... how to connect to IBM mainframe and run jobs directly through vb.net....
View 1 RepliesConnecting To MS Access?
Jul 14, 2009i have do a program to connect to access but there are some error can not run the program
userdel.vb useredit.vb <-- can not run
order.vbButton4 <---also can not
Connecting To Mysql In .net?
Mar 27, 2012im trying to connect mysql from vb.net in visual basic 2010. i wanted to query the db just to get 1 return is response to my proID once i click the button. it successfully show connection has been establish but i cant seems to run any sql query on it. what might have been wrong? this is the error i got from immediate window.A first chance exception of type 'System.InvalidOperationException' occurred in MySql.Data.dll.lets assume num is 1001 from the keypress event.
[Code]...
Connecting To SQL Database
Feb 8, 2012I am a wannabe programmer but quite new, started with VB.net about 1 month ago.I write on this forum because It's the first time that I'm actually stuck. The problem is I cannot find a way to connect to SQL server database I have created and saved earlier on my HD using visual express 2010. I want to find a way to connect using code, not by click and drop. I just hope you won't find my issue too trivial to even answer it.The project is very simple, it just consists of a button that should connect to the db on click.[code]
View 9 RepliesConnecting To SQL Express ?
Apr 14, 2009I have a function that works perfectly when I am connecting to a SQL Server on another machine as shown below:
vb.net
Public Function OpenDatabaseConnection(ByVal DB As String, ByVal Server As String, ByVal UID As String, ByVal Password As String) As Boolean
OpenDatabaseConnection = False[code].....
This works every time without an issue. But now I am trying to do some testing on a local version of SQLExpress 2005 on my machine and this fails with the following error:[DBNETLIB][ConnectionOpen (Connect()).]SQL Server does not exist or access denied.
I have tried server names of local, (local), localhost, (localhost), the ip address of my machine. I am using my own user name which has complete rights to the process, so is someone out there able to help me out as to why I would be getting this error? Is something different?
Connecting To SQL Server?
Nov 24, 2010I have this connection string (IP and port number changed)Public ConnectString As String = "Data Source=207.167.717.614,8711;Network Library=DBMSSOCN;Initial Catalog=TableName; User=User; Password=Password;"It does not all a connection, i've opened this port for port fowarding and have unlocked the TCP port of the firewall what else could be wrong?
View 24 RepliesMSSQL While Connecting With .Net?
Dec 15, 2011i have problem with connecting Vb.Net with MSSQL database i have a shared host for windows server and i have to insert each ip trying to connect with the MSSQL database through my program and its impossible to insert each ip to the Whitelist so while i was thinking for a solution an idea came to me that i can change the ip address of any user for the program to a unique ip such as ( 174.162.45.23 ) and i whitelist this ip i do this or a solution for this problem because i cant continue my project with this problem
View 10 RepliesVB Connecting To DB2 On Linux?
Jun 7, 2010I can get Visual Studio 2010 Professional to connect to a DB2 UDB database but I don't see any tables. I can hand code the sql and get data returned but I want to be able to drag and drop and use the power of the Studio. I've tried OLE and ODBC connections but I'm still missing something in the set up.
View 4 RepliesVS 2008 - Connecting To Net
Oct 7, 2009i'm making a program, that allows you to connect to the net, and 2 disconnect.
View 4 Replies