VS 2008 Class To Create Database And Tables From XML File
Jun 27, 2011
I need some expert help in achieving this task. I have an xml file which will be emailed to me everyday. I need to loop through the xml and create tables in a database based on the xml nodes and their attributes. looking at the following xml fragment for example: Code:
So based on the above xml, I would have to create a Shipment table as a Parent with fields like ShipmentIdentifier. Then I would have to create an Event table with the ShipmentID as a foreign key and fields like Source, Code. Basically a field for each node. Then if there are columns in the table that are new, I would have to modify the table and add the column. I only have to create tables where there are child nodes or where the nodes have attributes.
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Aug 6, 2009
I have a class that add extra information about a column for linq2sql (see code below) right now, I have to explicitly tell what column I want that info on, how would you put that code with a loop on every column in every table from a dbml file? I was doing my test on a very very small DB, now I have to implement it on a much more bigger database and I really don't want to do it manually for every tables/columns it will take hours.
how it's being used:
Partial Class Contact ''contact is a table inside a dbml file.
Private _ContactIDColumn As ExtraColumnInfo
Private _ContactNameColumn As ExtraColumnInfo
Private _ContactEmailColumn As ExtraColumnInfo
[Code]....
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Jul 25, 2012
I am using VS2008 and SQLite. I have created a database and several tables and am attempting to populate the tables with data from arrays.
The following code (example) works fine but stops after it inserts 30 to 50 records. I am running the VB code in debug mode and when it stops, I press pause to see where it is. It stops on "SQLcommand.ExecuteNonQuery()" and when I press continue (F5) it will insert another 30 to 50 records.
I do not get an error message. Is this a timeout issue? How do I keep the loop running to the end of the array?
Following is example code.
Dim
SQLconnect As New SQLite.SQLiteConnection()
Dim SQLcommand As SQLiteCommand
CODE:.....................
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Feb 3, 2010
I am new in this forum, also new in VB.Net I need to create a public class for insert and delete data to database Public Class My_DBFunctions
[Code]...
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Feb 9, 2011
I have trying to create a database that uses object dependencies for five different related tables.
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Jun 5, 2011
I have a requirement to create n Access 2007 database & some related tables from my application at runtime.
I used to be able to do this ages ago in VB5 but having difficulties doing it in VS (VB) 2010.
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Sep 15, 2011
My project is about recipes. I want to automatically create table inside in mysql database when I hit the add button on my project through codes. First is when I input recipe name in the textbox1 then my input will be saved in the recipes table under recipe name column and also create a new table through codes on what i input in the textbox1
Example of my database in sql
texbox1 input will be save here
recipes - id, recipename
And then it will also automatically create a new table in mysql database, create newtable, with id, quantity ,unit, ingredients
Private Sub iadd()
Dim command As New MySqlCommand("insert into recipes (recipename) values ('" & TextBox1.Text & "')", connection)
Try
connection.Close()
connection.Open()
command.ExecuteNonQuery()
[Code] .....
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Mar 24, 2011
I've been into programming, I've landed a job with a local company, the entire project the gentleman is paying me to do is incredibly easy, with one hitch, the original project I'm converting is built using access databases, for efficiency, and easier online transfer, I'm wanting to switch to using an SQL database, I've got plenty of experience inserting, modifying, and controlling an access database, but where should I start to learn how to essentially set up, create tables, and modify data within an SQL database?
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Jul 20, 2009
my visual basic create a .sdf file for every database but then when i try to access it it says that its an unknown database file extension. i used a tutorial which used a .mdb file which i had to download and it worked fine with it. how do i create a .mdb file
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Aug 14, 2011
I developed an application in VB.Net 2010 Express by which my users can updated the data in their offices and send XML files (total 4 xml files) for that particular date - its working fine I am getting 100's of files on daily basis to my FTP servers in a common folder.
Now i want to make an application that read those XML file at a scheduled intervals and import that to MySQL database tables. Also it should keep a log of files that has been imported in order to avoid duplicate importing of files.
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Sep 23, 2010
I have a problem using my database in which I have a table with product names, codes, prices and information. I use the below method to get connected to my database and tables.
Dim dtCOP As New AmetailorDataSet.COPDataTableDim adapterCOP As New AmetailorDataSetTableAdapters.COPTableAdapter
adapterCOP.Fill(dtCOP)
[code]......
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Nov 28, 2010
I want to create a class is it where I can do...
[code]...
How do I do this? Do i create a class and create a instance of CarData? but how do I add Color and Year etc to it?
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Aug 3, 2010
I have a problem using my database in which I have a table with product names, codes, prices and information. I use the below method to get connected to my database and tables.
Dim dtCOP As New AmetailorDataSet.COPDataTable
Dim adapterCOP As New AmetailorDataSetTableAdapters.COPTableAdapter
adapterCOP.Fill(dtCOP)
But in one row, I have product descriptions so there should be sentences. I set the type of this row is Text in the database. When I use single numbers in the table, there is no problem. But if I write sentences (that is a must because it is product description) or even a single word, I get the below error on adapterCOP.Fill(dtCOP):
"Input string was not in a correct format.Couldn't store <(the written text in description)> in Description Column. Expected type is Decimal."
There is a richtextbox in my form that should show the product description when the product code is selected from a listbox available in my form.
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Nov 22, 2009
So Im working on updating our company's program from Visual FoxPro to VB and this is the first step. I can access and read data from the table
Code:
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
[code].....
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Jul 1, 2009
I seem to have a major problem. when I add a typed dataset to my project and go back to my sql server and click on the databse I use it doesn't open. the tables and stuff just vanish. using the wizard, it creates this connectionstring:
<add name="Schenectady.My.MySettings.SISQL2ConnectionString"
connectionString="Data Source=.SQLEXPRESS;AttachDbFilename="C:Program FilesMicrosoft SQL ServerMSSQL.1MSSQLDataSISQL3.mdf";Integrated Security=True;Connect Timeout=30;User Instance=True"
providerName="System.Data.SqlClient" />
</connectionStrings>
It connects fine. but after I try opening it in sql server i get an error. It doesnt let me restore or anything. i tried restarting my pc incase the db was locked but it is still gone. now my app cant connect. Just for clarity, is user instance supposed to be set to true. and what is the purpose of it. also when the wizard asks to make a copy of the file that will be copied accross each time I run my project I select No.
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Jul 10, 2009
I'm building a multi language application, but in the application, there will be some data that will be retrieved from the db. In the db I have two tables (Access Groups, Teams) the two tables are related, there are some groups, that have teams, example (sellers can belong to team 1, team 2, team 3...). The data that will change it's the names for the access groups and the names for the teams. The only way that I can think to do this, is to have the different values for all the languages in the code, or some auxiliar file, and when loading the application I'll truncate the two tables and fill them with the current language values. By the way those values never change...
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Mar 7, 2009
code for creating a class in vb.net for a database table that includes insert,delete,update function.
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Jan 20, 2010
i just like to know how create a base class for connecting the database.just the simple one.
what are the best practice in creating a base class connection.
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Jun 12, 2009
We have 3 databases providers we use to connect to our databases: DB2, MS SQL, and Interbase. I would like to create a single generic database wrapper class that can be used to talk to all three just by passing in the correct connection string, username, password, and the provider desired.
I don't want to have to add references and import all three providers in the database class. Is this possible?I have done this before in Java using the Class.forName() function.
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Oct 11, 2010
I have to create an XML database for a class I'm taking, but I'm running into some problems. I'm trying to pack my data directly into the DOM using some classes I created and derived from the XMLDocument class, I'm trying to do it this way so I can easily manipulate the entries while the document is in memory and save them back to a file without having to mess around too deeply with the XMLDocument class. I'm running into some problems however when I try to typecast the elements I get from calling
Code:
XMLDocument.DocumentElement.Item
I assume that this is happening due to my derived class not being pushed into the DOM when a file is loaded, because it works just fine if I enter the data manually in code.
Code:
Option Explicit On
[CODE].............
Other than writing my own XMLReader I have no idea how to accomplish this, does anyone have an idea how I could go around doing this(other than writing my own XMLReader).
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Feb 24, 2009
I want to create a class (I think) that has properties that correspond to column names in a database table, such that they come up in Intellisense when I type the dot after the class name. Is this possible to do?
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Feb 6, 2010
There would be more than 8 table controls in the report(.rdlc) and each would hold records that has specific values on specific fields.The fields in my database table are;
1. Year
2. Semester
3. Subcode
[code].....
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Jul 21, 2009
How do I create DLL file from a class that I have ?
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Jul 12, 2011
have a datagridview containing 2 tables left joined, so that:table1 LEFT JOIN table 2 ON table1.id=table2.idI get an error whenever I try to edit my datagridview."invalidOperationException was unhandled by the user codeDynamic SQL generation is not supported against multiple base tables."The error points to this line:
da.FillSchema(dt, SchemaType.Mapped)
da.Update(dt) << This line
'da = dataadapter
[code].....
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Oct 22, 2010
how to implement UI, BL and DAL in a project the way that I see it as a requirement for some projects. The way I am able to do a project now is from a form create an object of a class in which there are properties and functions that do database selects, updates and deletes. Looks to me that doing a project like that is separating the UI from the DAL. In an update button click event I may call Obj. Delete (txtCustID.txt) for example. I don't understand the part of further breaking it down to include a Business layer; in which a vb solution is made up of three solutions.What goes in the BL?Does the BL call the DAL?
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May 17, 2009
I'm using the Access Database format .accdb?
1. Can I just create a database by creating the file: "<db name here>.accdb"?
2. Once that is done, is it simply as easy as executing the "CREATE TABLE" command to populate the database with tables and columns?
3. These queries return an error:
vb
Dim query As New OleDbCommand("CREATE TABLE xp (Name Text, Author Text, Version Text, Data Memo, Engine Text, Website Text, Call Text, SDK Text, Type Text, Demo Text);", cn) Dim query2 As New OleDbCommand("CREATE TABLE vx (Name Text, Author Text, Version Text, Data Memo, Engine Text, Website Text, Call Text, SDK Text, Type Text, Demo Text);", cn)
Error:Format of the initialization string does not conform to specification starting at index 0
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Mar 6, 2010
I'm wondering how I can go about creating something like a header file to contain some verbose functions I don't want to have to look at after I get them created. Something like in c++ like..
#include "classfunctions.h" to hide all the nasty stuff you don't want anyone to see.
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Apr 20, 2012
I have been trying to generate a Proxy class in VB.NET using a WSDL file for an Apache Axis SOAP Web Service. They have provided me the WSDL file and when I use the WSDL.exe command (In Visual Studio 08) and point it to the local path I get an error.
wsdl /language:vb c:Orders.wsdl
(I am trying to create a .NET Client that consumes the SOAP Web Service Hosted on Apache Axis 2)
The Error
Unable to import binding 'OrdersSoapBinding' from namespace 'urn:company:orders:schemas:OrderTypes:1.00'.
-Unable to import operation 'placeOrder'
-The element 'urn:company:remtp:schemas:PlaceOrderRequest:1.00:PlaceOrderRequest' is missing
If I use the svcutil.exe I also get an error message...
svcutil.exe C:Orders.wsdl /t:code /l:VB /o:"C:Orders.VB"
WSDL Code
<?xml version="1.0" encoding="UTF-8"?>
<wsdl:definitions
targetNamespace="urn:company:orders:schemas:OrderTypes:1.00"
xmlns:impl="urn:company:orders:schemas:OrderTypes:1.00"
[Code] .....
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Oct 22, 2010
I have used VB (versions 2 - 6) through many years; however, I am crash-course training myself into the VB2008 / VB2010 world kicking a screaming. I would like suggestions as to what SQL database access method should I focus more on in my learning process without making me feel that I'm a million years behind. I know I have WinForms where I can create a datasourse and drag / drop fields or tables on a form to create a grid (not really what I'm looking for).
My trouble isn't so much designing the form but in how I access the database. Theres XML, LINQ to SQL, ADO.NET, and many other methods. Not only do I need to grasp these methods quickly but I also need to know what type of projects I should create. What I mean is...I was thinking that I would design a WinForm app; however, I see that there are WPF apps and others to chose from. This is getting deep. I know it depends on the project that I'm working on. My plans are to write an app based off of either an SQL Express 2008 or SQL Server 2008 database. This first app will be standalone for now but may later become multi-user. I know I'm far behind on my learning curve coming from VB6. I have read a bit on VB2005 / 2008 / 2010. I own
both VB2008 and VB2010. I use VB2008 at work. I know ADO.NET is still alive but by what I read online, it's a dying method and is only kept for backward compatibility. XML and LINQ to SQL and other methods are all pretty new to me.
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May 3, 2009
create a Class Template for VB so that when I click Add -> Class, in the Add New Items window, that class will be displayed? And also the variables that are needed inside the class. I guess I need a tutorial.
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