I am in a bit of a sticky situation. I am currently writing a program where users are going to have to search for a specific skill in order for a calculation to take place.I have to hard-code around 500 skills but they also have to be able to search for the skill via a text box.I am stuck on whether or not to use an XML file to hold all this data or use a DataSet.I have no experience with either, but the XML file seems more appealing because I wouldn't then have to re-release the program for an update on skills, only the XML file would need to be replaced.
I have a dataset (WW1Dataset) with one data table(WW1).(database used in an access database) I'm trying to filter the dataset e.g a user wants to filter by a chosen surname (SurnameTextBox.text) so the datset is filtered to display only those records wherethe surname column in the dataset matches SurnameTextBox.text.
I am currently developing an application that is linked to a MS SQL Server 2008 Database. So now I realised that I needed to make a few minor changes to the database (add new columns to some tables, change the data type of a few columsn in some tables). After making the changes, I realised that these changes have not been updated in my VB application's dataset. I then tried to "refresh" the dataset, but it still is not updating the dataset. What do I need to do to update the dataset to reflect the changes in the database?
I'm developing an application where depending on a textfile input i should update/insert some data into an Access database. Let;s say I'm updating the bookshelf of a book according to a textfile that goes like:
TEXTBOOK | BOOKSHELF 000000001 | 000000000A and so on
[Code]....
does that make any sense? What I'm trying to do is basicalle: check if a book exists, if yes, then attach to Dataset, change its Bookshelf to the one in the textfile and repeat until the file is completely read. The Bookshelf can or not exists, if it doesn't then it should be inserted, is it done automatically when I update the Dataset? Finally "Batch update" the whole Dataset.
I have a problem saving a dataset which contains rows that i have imported from another dataset. i can successfully view the imported rows in a gridview but i cannot commit the rows back to the database.
I created a SQL database using the migration tool.I am converting my access forms to VB.net (VS2008).I am wondering if I create a single dataset in studio to the database or do I create a dataset for each form (query)? I am trying to determine what the best solution is. Many of my forms have drop downs that are populated using queries from tables.
I had a dataSet which link to a database. I need to add one field inside the database, After adding the field, how can I update and link it to the dataSet?
I am using Access 2010 and VB in VS2010.I have created a DB and have several tables. 1 table in particular called Employers, has the normal AutoNumber Primary key. Everything in Access runs fine. I used Access to develop a basic model application of the full version I am developing in VS.My VB front end contains a dataset linked to the employers table. I have dragged onto my form the "detail" view of this DataSet, not the DataGridView. The usual controls are in place such as the EmployerBindingSource, EmployerTableAdapter, TableAdapterManager and a EmployerBindingSourceBindingNavigator.On my VB form Scrolling through the record set is fine and all works well.My problem is after I click the "Add" record button on the EmployerBindingSourceBindingNavigator. The form fields go blank as expected awaiting user input. However, the field that is bound to the employer_id field (the Employer table's primary key) shows a value of -1.The insert command works no problem, and having looked at the database the table contains the new record with a correctly incremented PK
I am using VB 2008 frountend & Access Databases for my backend.When i make changes to Database such as Change In Field Name, Change In Data Type, Change In field size Addition of new Fields, Deletion of old fields, ReOrdering fields names I use to reconfigure DataAdapter in dataset to take those changes in effect, however some changes took place where some other doesn't.get those changes in effect in right order.
If i make changes to tables in a dataset, then want to save those changes to the actual database, how do i do this? I know that the dataset is just an "in house" virtual copy of the real database. I believe i need to use a commandbuilder but is there an easy way to do it, other then using an sql statement? If i spent the time making the changes to the dataset, why redo the work on the actual table? here's what i have, after the datasets have been changed:
I just want to ask. Using getChanges method in vb.net only get the changes on the dataset not on the table in database?for example I fill a dataset from a table in database.So there is a table in my dataset. There has been a changed in my table in database for example an added row.So there is no way in my dataset to determine this change because it has filled the original data.How can I determine the changes in my database table?
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]
So I'm not familiar with much vb code but I was hoping someone my spell out something pretty generic as far as updating a database. I'm pretty sure I've successfully edited rows but when i'm using my database update i get an error, probably just incorrect syntax. This is what I have so far...
It seems that there is no way to preserve changes to a DataSet made with the Designer when there is a change to the database. The only way to get the Designer to rescan the database to incorporate a change is to delete the DataSet and then recreate it. This of course blows away all the mods you've made in the designer. There should be a way to have the Designer rescan the database while preserve all the mods that have been made in the Designer. Otherwise the Designer is essentially useless after the initial generation of code. What am I missing?
As a workaround, I tried incorporating the changes to the database by making the same change in the Designer rather than recreating. However, clearly no one tested this is it only partially regenerates the code based on the change. Try changing a field from nulls not allowed to allowed. This works when you add data to the DataTable, but bombs as soon as you update the database, because the DataSet code does and the database code doesn't get regenerated.
I have an excel worksheet that has 20 columns of data, and thousands of rows. My goal is to take every row, and every column and insert it into a dataset.Which I have successfully done here:
'exporting the data from the excel workbook into a dataset Public Sub Export_From_Excel() Dim objApp As Excel.Application
I am currently working on a program (VB.net) that use a database (SQL server 2005)that is on a server. I am using a dataset to store queries and update the database.If i was going to copy the database and move the copies location, what would i need to do to make sure that my dataset points to the copy and it's new location.
I'm using the Visual Basic Express edition 2008 and I'm not able to save the changes to the dataset as well as dataset. While the application is running. I can see the changes are made in the table but the moment I close the application and check the data in the Dataset in the right window or the data in the database in the left window, I see no changesI have also tried the Update property of Table Adapter but no use. I have done Endinit, AcceptChanges everything but moment I clode the application no changes are reflected in dataset or databse.
I have an Access Database in which I am trying to add a row through a dataset. I am able to add the record to the dataset but I can't write it to the live database.
Dim connectionString As String = _ "Provider=Microsoft.ACE.OLEDB.12.0;Data Source=C:extraTEST.accdb;Persist Security Info=False;"
I am looping through my dataset to save my database, I thought this might not be the best way. Is there a more resource efficient of doing it?
For i As Integer = 0 To CO.Tables("CO_Del").Rows.Count - 1 'CO is my DataSet dbCommand.Parameters.Clear() AddInParameter(dbCommand, "@IsDelete", DbType.Boolean, 0, DBNull.Value)[code].......
I have a form in vb8 that is set up as follows: I have a table in my Access database calledUsers that has a name and a password (encrypted). Using the toolbar I created aBindingSource with a name of UsersBindingSource and a dataSource ofUsers Using the toolbar I created aDataset called with a Name and a DatasetName called Users_Dataset Using the toolbar I created atableAdapter called UsersTableAdapter I added two textboxes on the form and changed theirDatabindings...Text property to the corresponding field in the Database.
How to now update the database when I click Update. What the program needs to do first is encrypt the Password before saving it. I wrote the code in the TextBox2.Lostfocus event to encrypt the data a place it back into the TestBox2 field. The only samples I find on the net refer to DataGridView controls (which work) but I don't want to use them. How can I get the database to accept these changes as well as changes to radio buttons or comboboxes?
On a form i have several text boxes binded to a bindingsource and including a datagridviewI have populated the textboxes with database fields successfully and the datagridview displays the correct information.I have the following code to save the information to the database but i cannot get it to work. [code] I have tried many code examples here in order to save the data, none of which has worked.Can anyone please help me with this?
I am attempting to create a tier application. Im wondering which approach would be better to take on. Should i have stored procedures on the database and then call these from my Data Access Layer (this is when you right click your dataset and add a table adapter, select existing stored procedures or create the entire query in my Dataset under TableAdapter?
My reason for asking is because my Stored procedures are created to insert and update in one command (by using an If statement), but saw the other approach recently. Any reason for one over the other?
Having found the following post on datareaders Topic Posted On DaniWeb i have managed to successfully create a datareader in a class that updates a listbox on the calling form with entries retrieved from a SQL server database.I was wondering if it is possible to achieve the same thing using a dataset?My ultimate aim is to read a SQL table / view of information (ie customers), add this into a list box so that when i click on a specifc line in the list box i can then use that selected entry to do something further (ie click a line and then an edit button to edit that records details)[code]
Using Visual Basic 2010 Express on Windows 7 whilst learning to program a database application using windows forms. I created a database (.mdf I think) with a tables e.g. patient details. Then created a form and dragged dataset and database adapter follwed by dragging database fields - this all worked perfectly well. I then created a table "tblSuburbs" with key suburbID, suburb, postcode fields. This also went well when creating a form to add, modify or delete suburbs. I modified my Patient table to include a link to the Suburb table - creating a relationship and saving both tables. Here comes my problem - Whilst the Database Explorer shows the "_SuburbID" field I added to my patient table, it does not show up in the DataSet even after I try and "refresh" every "refresh" button I can find. I need the DataSet to show the link field as I need the User to select which Suburb they in.
i'm using vb 2008 express editor, and 3.5 compact sql, through my program, i make changes, like altering rows, deleting or adding new rows, to a dataset. i want, that when button 1 is pressed, all changes made to that dataset, are updated to my database. what is the line of code that does this? [Code]
