VS 2010 To Write To A 'database' (txt, Xls, Csv, Etc)?
May 24, 2012
Disclaimer: I didn't place this in the Database forum because since I'm so new to VB I might not even know of some kind of ingrained function for the saving of data. I have NEVER used standalone VB (I have 2010 Express now) -- I've always used VB 6 in MS Excel for the storage of data, so I really DON'T KNOW what is possible with VB6. (I also don't want to learn ALL of VB just to see what direction I need to go in, I'd rather get a direction -- even if vague -- and learn from there)
Goal: I want to write a standalone application for the creation of, storing of, manipulation of, etc records in Visual Basic 2010.Specifically what I want to do: IN VB, type in a bunch of client information in a variety of fancy windows, and when I'm done, have that client record saved in some kind of database.
Problem: I've tried Googling a ton of things about reading and writing from files (txt seems easiest for me at this instant) and I also see APPENDING to the end of a file. I don't see how a record in the file can be UPDATED. I see saving, I see loading, but I don't see (for example) the identification that I'm trying to save another record for Client 1234 so that it saves over the old client's record with the updated information.
1) Is this possible?
2) What database format would be preferable? (Right now I'm aware of txt, xls, csv, or access as possible options) I'm sure there are strengths and weaknesses to each but if there is general watered down version that would be awesome (I'm not trying to suck away anyone's life force)
3) Sample code, if possible, for whatever record solution you recommend using?(And I know that Access is generally pretty darn awesome, but the final project that I'm hoping to build to is likely to surpass the 'reasonable size limit' of Access that I've been told about)
I have NEVER used standalone VB (I have 2010 Express now) -- I've always used VB 6 in MS Excel for the storage of data, so I really DON'T KNOW what is possible with VB6. (I also don't want to learn ALL of VB just to see what direction I need to go in, I'd rather get a direction -- even if vague -- and learn from there)Goal: I want to write a standalone application for the creation of, storing of, manipulation of, etc records in Visual Basic 2010.
Specifically what I want to do: IN VB, type in a bunch of client information in a variety of fancy windows, and when I'm done, have that client record saved in some kind of database.Problem: I've tried Googling a ton of things about reading and writing from files (txt seems easiest for me at this instant) and I also see APPENDING to the end of a file. I don't see how a record in the file can be UPDATED. I see saving, I see loading, but I don't see (for example) the identification that I'm trying to save another record for Client 1234 so that it saves over the old client's record with the updated information.
i need to make a database application that can write/retrieve cells/datasets from/to a database i buyed a book in there was an example of how to create a database application while debugging i had the "Object reference not set to an instance of an object." error and it highlighted this code
objDataRow = objDataSet.Tables("KlantenTable").NewRow now the problem is here i declare something later in the code i write to it objDataSet.Tables("KlantenDataTable").Rows.Add(objDataRow)
My Visual Basic 2008 can insert a new row to a dataset, but the dataset does not insert new rows into the actual Access 2007 database. The database remains unchanged and there are no error messages. How can the dataset write the new row to the database? [code]
the way im connecting to database is different than any turtorial i found im using access and i need to write a ssn from a form to the database field.[code]
as a comparative newbie to VB, I am having trouble with a program I am writing in Visual Studio 2005 in order to insert a value into a table I have previously created with SQL Server. Here is the function that is giving me trouble
How hard is this. i need to send information from a text box to a website(i not done the website yet) which is anothing il be asking abot.I have basic vb.net skills. so can follow what i am doing. just not great
I have an application that will be called by a database(this application is called from an access shell that uses SQL Server Tables), my question is do I need to provide a connection string to write to the database or since it is already open I can just pass the insert statement. If I am to provide a connection string do I use OLEDB JET 4.0 or ?
I am trying to write VB.NET query without writing SQL stored procs. I have already gotten many dataset text queries to work. But I am having trouble with getting this scalar query to work. All I want to do is to get the result of this T-SQL query. How can I code this successfully? select (DateDiff(w, '1/1/' + '2011', getdate())) / 7 AS SELECTED_WEEK (What this code does is it returns the current week of the year). And will this query above return the value as an integer datatype or string?
I tried your answers but it gave me this exception error:
System.InvalidOperationException: ExecuteReader requires an open and available Connection. The connection's current state is Closed.
I am trying to make a anti virus program, I know that any antivirus should have a file contains a database of virus signatures. How to build a database in VB.Net? I'm not asking about the way to create the database. What I want to know is how to write the virus signatures in the database? What actually a virus signature is? Is it strings used in a virus or what?
table building contain the buildin information table costomer conrian the customer information table picture conrian the Picture i save these information from anther form but when i binding the data and click next button the picture dont change
I need to know who to write data from several text boxes on a form to a sql database.I have created the sql database on a localhost using myphp admin, i have created the connection in a module named as dbconnect()i can try the connection and this connects fine, but unsure how to write the data from the texboxes to the database.
I loaded a dataset (just one table) from the database. Then I modified f.e. the rows from 5 to the end and add 4 new rows. Now, I would like to write back the dataset into the database.
I am having a problem with an application that displays data in datagridview depending on a selection from a combo box.The problem occurs when I want to write the data back to the database.
I get the following error:"Update unable to find TableMapping['Product'] or DataTable 'Product'."
Is this because the table in the dataset is filled in a private sub? If so how do I make it public?
I am using VB2005. I am trying to write to an Access database seperate from the data's origin. AKA: I need to run a query getting data from one Access table and write it to a table in another Access database.
Overview: I need to get data from one Access table and two Excel worksheets. I need to write the data to an Access database so I can run a query combining the three into one table. I will then use the table to create reports.
I have googled, checked multiple sites, and checked MSDN. The only thing I have been able to find is populating a datatable and writing changes back to the database. This was SO easy in VB6.
I am using MS Access 2003 and vb.net to develop a windows application of inventory management.
I have used datagridview in the form and using FillBytoolstrip option, can filter data using type.
But i have no idea as to how can i update the database to reflect the latest changes in the gridview.
following is the code I have used.
Private Sub BOM_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load Me.PartnoTableAdapter.Fill(Me.HemDatabase1DataSet3.partno) End Sub
I am designing an interface using vb.net and the values inputted there should be saved in a database and I choose to design my database using mysql in phpmyadmin. I already made my database in php via localhost/phpmyadmin/index.php. But I do not know what commands / codes should I write in vb.net so that i.e. the value of textbox.text would be saved in database.
I'm trying to write a ClickOnce ap that will connect to a web database and download the data into a collection that will be written into a local database. This will allow the user to update the data while online but use the program while offline. I see it as a hybrid ap using both Windows forms and asp sql calls.
