.net - Distribute Data From An Internet Datasource To An Embedded Database?
Jul 13, 2010
I am developing a winforms application that will have an offline mode, so that it can access the data if an internet connection (or more accurately, a connection to my WCF service) cannot be established. I have decided to utilize SQL Server Compact edition on the client side of the application & was wondering what the general consensus is on the "best" practice for making the client application (Sql Server Compact) subscribe to the master database (MSSQL 2008).
Management enters information into a web based administration panel that I developed and is stored in a MSSQL 2008 database.After adding / modifying information, they can click a release "datapack" button which will increment a "datapack" version number, which will later be used by the client application to determine if they are in sync or not. When the client application is started, it connects to the internet and determines if the version numbers are in sync. If not, it pulls the information from the server.
That third step is where I'm a bit lost I thought about simply developing a web service that will expose a dataset containing all of the data and just iterating through it doing inserts, but that seems terribly inefficient to me. The full database probably wouldn't amount to much more than 5 MB total, so that led me to think it would be great if when management clicks the release datapack button, it would store the database in a file that could simply be downloaded and would replace the embedded database. Again, I'm a little lost on how that would work. This is my first time working with an embedded database, most of my work has been web/win apps that have real-time access to the data.
I am about to develop an application in vb.net 2010, until now I used to connect to database server to manage my data . Now i need to develope an .exe which could run in any pc, so I need somehow to store the data in a local database which is embedded to my application, I see .NET has a local database. My question is a right choice to use a local database for these kind of solutions?
i just want to know, what is much better to do for data access? include the database to my solution (tools>connect to database), or just hardcode everything?
I need to target an MS SQL compatible MDF file for database entry, but I need a database engine that can be embedded in an application - don't want to run MS SQL Server on every machine where the application is installed.I've been through a lot of documentation without any luck.
In my database table I have a varbinary field that holds PDF documents. I would like to have an aspx page where I can build in a frame or content placeholder where the content of the PDF is embedded in the page.
I am trying to have letter templates (word documents) that are stored in sql server VarBinary(max) to be accessed via a web application where they will be edited and saved back to sql server by directors of our company. Then various managers will be able to select an existing template (word document), make any additions, and mail merge with a list of customers to print or save the letters.
I am looking to open up word within a web page much like you would an email in outlook, edit it with spell check and the like, and then save it back in sql server. I am able to get word to open from a file but it is outside of the web application in a separate word document. I am storing the word document in sql server but am unable to open it in word without having to save it to a disk (why should you have to go to a disk for viewing or editing?). I am able to programmatically mail merge but that is in a separate word application.
I am finding bits and pieces on the web but nothing that will pull things together such as embedding word but in a windows app not a web app. Mail merge from a file not from a database, converting a byte array to word in a directory but not on a web page.
I'm using visual studio 2005 to develop a form with a combobox passing a value into the parameter of an embedded crystal report. Why it keeps prompting me for a database login every single time you try to run the report with a different combobox selection.
Here is my code: private Sub Form1_load... Dim ConnName As String Dim ServerName As String Dim DBName As String Dim user As String Dim pass As String [Code] ..... I looked at this previous posting [URL]. I couldn't find where a CMC was to disable the prompt.
I am trying to retrieve an image from an Embedded resource, and displaying it in its RAW DATA format (ie-> junk text data).Basically, I am running into a wall with everything I attempt.
the story goes something like this:i have embedded resource file, a vbs script.i have an error when i use writeallbytes and it says dimensional error cannot be converted to bytes something like that so i decided to make a module instead of writeallbytes,what my program does is it writes the content of the script to textbox and after that this data will be written in a script and will be save on drive C: as .vbs.that is perfectly working on my codes
A program that I'm designing for a local jewelry shop to print receipts and what not, there are multiple cashiers. I have written a database in Access with the Cashier ID, First Name, Last Name, PasswordI have added this to my dataset, it shows up as CashierDataSet1. What I need to do is verify the Cashier ID, and the Password match TextBox1, and 2. All the tutorials I have found are for accessing that database on the local hard drive, which would be fine if I could get rid of my UnauthorizedAccessException error. Any ideas or well known tutorials for using a database in a dataset without pulling the text boxes onto the form and creating that navigator ?
I know this is a very basic question but it has been awhile since I created a project with a database( been using a lot of XML). I created a database then selected it as a data source added some controls to some forms. Then I realized I needed to adjust some tables and I needed to add a whole new table. I deleted the controls and updated the tables that needed some adjustment. Now I would like another table. Can I disassociate the data source and do my adjustment to the database?
Have I created a problem with the binding object since I just deleted the controls on the form. I have written classes and some logic or else I might just start over. I guess I could copy those files but I am wondering if there is an easy way to fix what I have started. I realize that there are alot of questions here so any resource on how to modify a database that is attached to a VB.Net project.
My program needs to create a mailmerge with Word using a specific group of clients from the sql database list. I have a datatable set up in the database that stores the clients information on the individual user's computer.
The code below will automate word to create the mailmerge, but I can't figure out how to pull the following from my client table and use the results as a mailmerge datasource[code]...
I have a sqldatasource with a very simple select statement that should always return one row. I have textboxes on a page that i want to fill with that data from the datasource. how could i do this for textboxes? If there is no data in the database then i want the textboxes to remain empty.[code]....
i am building a database application in vb.net and i started by adding a data source from the DATA in the toolbar. my connection is good and it shows all my tables in the data source panel.
i also see new classes related to my database, like
sakilaDataSet sakilaDataSet.customerDataTable ... and so on.
how do i query and use these ? i googled a lot and i am not able to get this.
Dim cust As sakilaDataSet.customerDataTable = New sakilaDataSet.customerDataTable Dim row() As System.Data.DataRow = cust.Select("customer_id=5") MsgBox(row.Count)
My last try was with the above code, but the row.count always turns out to be zero.
my program has a datalist which list out all the item from datasource and display the detail information on different textbox the problem happened while i click "vitamin a" from datalist, and the "supplier name"will display "daily medicine",then when i click "vitamin b", it will display "sunny medicine",finally when i clicked back "vitamin a", the supplier name still remain "sunny medicine" which mean it does not change from "vitamin b"?
I am using the following code to add a row and data into my datasource.[code]Row # 150 for example, the reason is I want to be able to only add 1 record and if the end user adds another one it overwrites the exisitng one and also be able to retrive that record the next time program is opened.
So I have an application which uses MSSQL server as datasource. Is there anyways I can avoid using any database server and use a local file as datasource ?
I normally place all db related work in my databases in SQL Server Express 2005. But in tutorials I have seen, I heard that one needs to re-create referential integrity and relationships and constraints and checks and defaults anew in datasources mapped onto databases. Is this true? What parts of a database are NOT mapped on to datasources?
I am currently building an app using net framework 4 I am aware that if I want to distribute it for Windows XP, I have to include this as part of the setup
Which versions of windows has which net framework in the operating system which means I do not have to include it in the setup
ie What does Vista 32 & 64 bit have, What does windows 7 32 & 64 bit have
Also, is there a step by step tuition to create a setup package
I took the liberty of creating a small slideshow showing my problem. view it here.
[URL]
As you can see, I start with an empty data table on the data source. I add information to a form and the data appears on other parts of the program through data bound list boxes and such. I can exit debugging mode and re-enter it, and the data is still available.
However, the data is NOT actually added to the data source's table.
If I modify the program at all, the data that is floating around disappears.
I do not understand why this is happening. Apparently I need some kind of code to tell it to write permanently but I have no idea how to go about it. This is something I've been fighting with for over a week. I cannot find any solid information about this online at all.
creating an application using VB 2010 Express. i found data I entered into table were not saved (after I clicked"Save" button)successfully into Microsoft access file which I had added successfully as datasource.These are the codes:
Ok, so I've got this Visual Studio 2008 Project I was working with about a year ago perhaps. And this project had a datagrid that was linked to an external database running on a server off the internet. Now, this databinding was all done using Visual Studio 2008's built in features. But how can I now change the binding to a different server, without destroying the project? I've noticed that a lot of the code that Visual Studio creates makes a mess. So manually trying to change the datasource has allways f*cked up the whole project for me.
I'm not all that good with this stuff, that's why I used the built in features of Visual Studio. But I noticed that several things appear, like a binding source, and a dataset. Is it possible to do this? Perhaps even better, making these settings be controlled after the program has been compiled. The way it is now, it's all hard coded after compiling, and that kinda sucks. I remember trying to do this about a year ago, trying to bind these settings to variables stored in settings. But I never got that to work. Just throwing around ideas here
i have a win app in vb2005 but when i want to create a data-source to connect with my database i got this error: The file \CATV-ANTIVIRUSdata|CLINICA_Data.mdf is on a network path that is not supported for database files.
An attempt to attach an auto-named database for file \CATV-ANTIVIRUSdataCLINICA_Data.mdf failed. a database with the same name exists, or specified file cannot be opened, or it is located on UNC share. i need the datasource to start creating datareports but i don't know how to resolve this problem before.
