.net Connection String To Sql Databse?

Jan 11, 2012

After using the following code, no errors are shown, but my database is not updated once i have made a change using my management system application.

Dim constring As String = Application.StartupPath.ToString() + "mydatabaseName.mdf"
Public c As String = "Data Source=.SQLEXPRESS;AttachDbFilename=" + constring + ";Integrated Security=True;User Instance=True"
Sub openConnection()
conn.ConnectionString = c
conn.Open()
End Sub

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Assign A My.Settings.Item Connection String To Cmd.Connection Connection String Value?

Aug 25, 2009

How do I assign a My.Settings.Item connection string to cmd.Connection connection string value?

Dim cmd As New SqlCommand()
cmd.Connection = My.Settings.Item("csStaffHoursWorked")
cmd.CommandType = CommandType.StoredProcedure
cmd.CommandText = "spSaveDeltekImport"

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The Connection String Could Not Be Found Or Data Provider Associated With The Connection String Could Not Be Loaded

Mar 11, 2010

I got this Error Message while I try to preview the records in Dataset Designer:"The connection string could not be found or Data provider associated with the connection string could not be loaded"

Here is my dataset.xsd code

<Connections>
<Connection AppSettingsObjectName="MySettings" AppSettingsPropertyName="loginConnectionString1" IsAppSettingsProperty="true" Modifier="Assembly" Name="loginConnectionString1 (MySettings)"

[code]....

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Display Connection Properties Dialog For Connection String Browsing(for Database) In Run Time?

Feb 5, 2010

Is there a way to display the connection properties dialog for connection string browsing(for database) in run time?

As I want the user to be able to connect to various database using the GUI.

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Sep 3, 2011

I understand the possibilities for encrypting a connection string in .net v4. I have a win forms application that will be used by multiple people on different machines. I understand that I need to protect the connection string at time of the app being first run on the target machine. However I am concerned that for a period of time my connection string will be unencrypted. I am looking for advice in how to deploy my app with the connection string already encrypted or encrypted during installation. encrypting the connection string in a secure way?

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Invalid Connection String When Modifying Tableadapter Connection?

Jan 19, 2011

I'm developing an app in vb.net (visual studio 2008). I have a Teradata back-end that will be supporting multiple users in a production environment. I need to use variables in the connection string as the user/pass will be changed every 3 months.

For the gist of the application:

In it's most basic form - I have a search form which works correctly - it pulls results into a listbox and the user then double clicks the list box which will then open a form that is bound via table adapter to the back-end table (Teradata). My connection string is fine everywhere in the application. My problem is using a modified connection string for the "fill" function of the table adapter once the form is opened.

I'm using the code below for the on-load event and keep getting an "invalid connection string" - again, the connection string works fine everywhere else in the app, and the variables etc... are working correctly.

Private Sub adaptertest_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
Dim DBConnStr As String = "Provider=TDOLEDB;Data Source=TDDEV;Persist Security

[Code].....

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Mdb Connection - Transfer File Path In Our Connection String

Aug 26, 2009

I'm facing a problem after installation any software setup that has a database in access(mdb file) How to I transfer file path in our connection string.

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Mar 18, 2012

I am trying to connect DSN from my VB 2008 project. When i try using myoledb.connectionstring="DSN=myDNSname" I get the following error message An OLEDB provider was not specified in the connectionstring.

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SQLClient.Connection Without Connection String?

Feb 18, 2012

Why doesn't an exception get thrown when this function is called when there is no ConnectionString set for the Connection? I just spent 15 minutes debugging and staring at it and finally figured out it needed the connection string. Shouldn't an exception get thrown?

Friend Function GetValues(ByVal TableName As String, ByVal FieldName As String) As DataTable
Dim cn As New SqlConnection
Dim cmd As New SqlCommand[code].....

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How To Update SQL Databse

Sep 5, 2010

I'm new to VB.NET 2010, i have a form that has textboxes and i need to update my Database but i am failing to do so.I maged to create the login page and i can search from my db but i cannot add or insert a record.

My form has the following textboxes, Name, Surname, Username, Password and i have to insert to a table with the same columns

[Code]...

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Update In .net In Databse?

Jun 12, 2011

Everytime i run the program and update the data in database. I got the error in this code da.Update(ds, "reservationdata") Dim dt As DataTable = ds.Tables("reservationdata") If resno.Text = "" Or custname.Text = "" Or custaddress.Text = "" Or TextBox1.Text = "" Or endTime.Text = "" Or amouttopaid.Text = "" Or InitialDeposite.Text = "" Or RemainingPayment.Text = "" Or DateTimePicker1.Text = "" Then

[Code]...

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Mar 2, 2009

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Mar 15, 2012

i have datagrid on my interface with few columns eg. student name, address and age. on top of that there is a text box to include the group name. i want to save all the grid data into table called "groups" in access database. as an instance under group 1 all the students names and their details.

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Jul 18, 2009

i have a calendar on a form, i am wanting to use the date clicked method so when i click on a date in the calendar amessage box will pop up and pull the informationfrom a field in the database and be displayed

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Apr 3, 2012

can anyone give me any tutorial or guide me in building an application using vb.net which can display table from sql databse.

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Getting Data From Ms Access Databse To Combo Box

Oct 15, 2011

i tried a lot of variations in my code and even sql statement but still nothing happens.. i really need to do thing messed up project of mine and put all my efforts here.. but i really can't understand why my combo box isn't showing the names of the candidates w/ that designated position.. heres my current code:

constr = "Provider=Microsoft.Jet.OLEDB.4.0; Data Source = " & Application.StartupPath & _
"SSC_Automation.mdb; Persist Security Info = False"

[Code]....

i am working on a university student council voting system and what i wanted to do is when the voter selected the radio button name "Vote by Party list" automatically the names of all the partylist that are entered in the databse will be listed in the combo box and all the candidates on that Party list will be shown on the individual combo boxes made for each position..

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Insert Record In Mysql Databse?

Jun 26, 2010

I have this code and whenever i try to run it, I always get an ODBCEXCEPTION WAS UNHANDLED ERROR [42000] [MySQL][ODBC 5.1 Driver][mysqld-5.0.51b-community-nt]You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'char VALUES('101','noodles')' at line 1

[Code]...

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Jun 10, 2011

I m entering information of each person in Employee Information form and saving it in MS Access database.Now i want to Show the data of each person Individually and the information of the next person will be shown on the next button click. to do this what shall i use a crystal report or windows form.

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Jul 16, 2009

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Apr 7, 2011

Why my database always reset and what i had enter to the database using my application will be erased.if i dont close the application. the data will stay.

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Nov 17, 2010

Is there a tutorial out there for connecting an access database to a VB project? I want to create an appplication that generates numbers incrementally based on certain other conditions.

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Mar 17, 2009

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May 19, 2009

Can i ask how do i make the data i retrieve from the database into a link?

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Sqlcompact Databse In My Windows Form Applicaton?

Sep 10, 2011

I have searched a lot regarding my problem but no solution so i am posting here to get advise from the experts.I am making a windows form application , and using Sql compact database.My Problem :When i am inserting records in the database using code (run time) they are inserted deleted , update and i can see them updated,inserted,deleted in my application , but when i close the application and start again only a few times they are changed, once a million :). Else i again see blank database ,or if i directly put values in the database from the solution explorer Visual studio 2010 , they stay there forever. I am using simple update,insert ,delete statement but not sure why the changes made to database disappear when i close the application.

First this For all :
Dim con As New SqlCeConnection
Dim command As New SqlCeCommand

[code].....

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Jan 11, 2011

There are 3 textboxes->textbox1,textbox2,textbox3 and 1 button.In textbox1 bname will be stored and in textbox2 aname is stored.Bname and aname are columns of databasetable.This are not unique.There are same bnames and anames records.What I am trying to do is:when the user clicks on button then the code should match textbox1 and textbox2 with the databasetable and get the count of rows that match this data.And print the count in the textbox3.If there is no similar bname and aname in the table then the count should show 0.I tried doing this but am pretty sure that its not right as its not working.

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VS 2008 : View Databse In Excel - Exporting?

Apr 24, 2010

I would like to view my database in excel.I want to be able to press a button in my program and then have a specified table in my database to be sent to excel to be viewed.How do i do that? Would it be possible to do that? I just want to see the data table in excel, not really looking for anything else, just a simple table in the excel spreadsheet.

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VS 2010 - QUERY The Information From The Databse With Variable

Dec 9, 2011

I am almost finished my project for a vb database app, but lack the apparent knowledge to make this last connection. My listbox populates fine on form_load. I have identified the "category id number" from the database as the identifier for my information to be displayed (from that field). The variable catID returns the proper "category id" number to match the information to be returned when clicked (a description is part of the field for the appropriate number)

I presume the extra sub procedure I wrote for another daCategory = New OleDbDataAdapter is probably not necessary, but I'm very confused. How do i QUERY the information from the database with variable catID? tblSamples.Category(#) to return tblSamples.description to textbox when called from the listbox. I am not/will not use a databinding approach. [Code]

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C# - Get A Connection String From Other App?

Dec 29, 2011

I have two website application,

first Application is located at:

MyApp/WebApp1

and the second at:

MyApp/WebApp2

is it possible WebApp2 get a Connection String from WebApp1 web.config?

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