Populating A Dataset From The Tables That Are In An Access Database?
May 7, 2010
I have a database that has tables in it. Tables can be added to this databse programatically as well as the data that needs to be in those tables.I need to be able to query that database to get what tables are in it, place the names of those tables into a listbox so that when a user clicks on the name of the table, It will update a DataGridview with the data that is in that table in the database.I assume that you would need to build a dataset at runtime based off of what tables are in the DB, but i have no idea how to do this.
I dont know how to dynamically populate a dataset based off the tables in an existing database.Once I can get the dataset to populate, I can then move forward with the next step of the project.
I'm trying to populate an Access Data Table (5 columns) with a Visual Studio front end, but I'm not clear on how to pass the data through the parameters. I have created a connection, a data adapter, and a data set in the project by dragging them onto the form. I know the connection works because I can see my Access database using the Server Explorer. I have an INSERT command in the data adapter and the parameters are represented in this command with question marks. See my insert command below INSERT INTO tbl_ConstraintLogs (ConstrinatChangeReason, ConstraintTagName, ConstraintValueBefore, ConstraintValueAfter, onstraintTimeChange) VALUES The values that I want to pass to the database are coming from text boxes or they are program generated. For example: If I have a variable in my program called "AbcValue", how do I get the value of this variable into the database as the first parameter. I was trying to use the "Fill" command, but I'm at a loss here.
I am populating a collection from some tables in the database which serves as a look-up from controls (combobox) I am using but what I want is rather than hitting the database each time can I just cache the collection and get the collection from the cache? The look-up table may or may not change all the time so I would want to have a way to validate if the cached collection is still valid or not.
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 have a field in an access database with decimals in it. I am using ADO to read in the data and are trying to assign it to a textbox in a form. This works fine when its a whole number. But it doesnt seem to work when its a decimal for some reason.
I have declared the variable i have assigned the access field to as a double, but when i set up a test textbox which i point the variable at and times it by 1000, it doesnt work. Works perfectly when i change the access field entry to a whole number though.
This sounds like im not using the right syntax or something.
I am using visual studio 2010 with vb environment, I am connecting to a microsoft access database with 2 tables, one table per form, i can add a record and save it no problem, but when I update a existing record i receive the error, this happens on both tables, i am using the standard navigation buttons on the forms.
I want to gather some data from some tables of an Access Database, I've found some solutions online, but I haven't found ways to fill a datatable, or dataset, and get each single field properly. Is it easier for me to get whole tables then get just the info that i want, or should I make a lot of searches in the access DB getting just what I want each time? Any code snippets for it? The Access Database is in an ACCDB file, with no user or password. I'm currently using VB.NET, but it doesn't matter if you answer in C#. [URL]
I am in the middle of the creation of an application using vb.net. I have a database created in MS.Access which includes 7 tables. I connected this one with my parent program code. Now the problem is that I want to display the data from each column. I have 12 columns and 14 rows in my first table. How can I display data from one column in a Combo box?
I have got a database with a bunch of tables in it. So far, i can query that database and get the names of all the tables into a listbox. this is sweet.
What i need to do now is to enable the user to click on a table name thats listed in the listbox (which were put there using the
GetOleDbSchemaTable method)
and when they do, i need to populate the Datagridview with the relevant data thats sitting in the table that is listed in the listbox.
I've tried a couple things to get the tables themselves to populate the DGV(which kind of works now), but not the Data thats sitting in the individual table.
I have a system that gathers raw data from electronic devices, uses that data to populate a set of tables and allow uses to add/edit certain data and report on it. (Kind of basic right...NOT) There are 3 applications that I've written that use the same database.
One is a client that is on 3-4 user machines which allows them to see the data that has come in and work with it. Two a Data-to-Information process program which takes the raw data, checks up certain information and puts the results into the database. Third is a data gathering app that interfaces directly with the electronic devices and about 10 times per day places the raw data into a single table in the database.
If a user is in the 'client' application the data processing application crashes all over the place: 1. Database file already in use. 2. Unrecognised Database format 3. File locked exclusively by User on PC X.
Almost always on a different line of code and once when I made it retry over and over I managed to corrupt the database and had to Compact and Repair it to fix it. If no one is using the client everything works perfectly. On each client machine is a database with linked tables to the server machine. The machine that is running the Data processing is the server and the processing is using a database in a different folder that also has linked tables.
I have gone through all the recordsets in the Data Processing application and made sure that they are only using ForwardOnly and Read Only. They edit the data only with Insert, Update or Delete queries. I'm about to do the same in the Client Application as it seems to be the one that is locking everything all the time. The client machines haven't crashed on that error at all. Does it matter which version of Access is on the client and server machines? (All the clients have Access 2003 and the server has 2007 but the Database was created in 2003). Should I just convert the Access database to SQL server and be done with it?
I have a form with 5 fields(inputs). When I entered data in the form and click submit, the data is entered into an Access 2007 Database(Table). All the set up (connection) is working because the data table is getting populated with the user info. However, I also need to search the database by entering a name in the name text box and clicking a button.
This is suppose to populated all the fields with information from the data base if the user exist. The search part is not working. I have no more hair to pull. :) Here is the code:
I am looking to select all the tables from a microsoft access database. I just need the SQL statement i think, i can connect to the database that is needed.
I have three tables (Supplier, Product, PurchaseOrder) within a MS Access database. I am trying to display Product table in DataGrid1, Supplier in DataGrid2, PurchaseOrder in DataGrid3. What I am trying to do is to choose a product, the total list of suppliers for that product appears in DataGrid2. Up to here works fine. Now I want to add the third datagrid so that for product #1, supplier #1, there are four purchase orders listed - default. Then if I choose product #1, supplier #3, there are two purchase orders listed, and so on. I can not find out how to work with the DataAdapters and DataSet Relations for three joined tables.
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?
I am having a problem updating an access database with new information from an updated dataset. the database consists of 4 columns: User_ID, Login_Name, Password, Access. The following code makes a connection to the database, fills a dataset with the data from the database, reads a txt file with user name and passwords, and should update the dataset and then the database. However, I keep getting an Syntax error on the INSERT INTO statement on the datest.Update(dsUser,"User") line. I have found multiple posts on here showing the correct syntax of how to update a database, but I can't seem to get it to work.
I am trying to get my head around datasets, etc. The following code pulls data from an sql server and stores it in a data set. I then set the grid's datasoure to this data set. Now I want to populate a combo box on 'form load' with information from a field (surname) within the authors table.How do I approach this? I can do it in design mode but I want to do it in code as I feel you get a better understanding of what is happening under the hood.
Using VB2010, I am trying to insert a row into an Access 2010 database. The database has several tables, but right now, I'm just trying to insert a row into a standalone table in the database.
I am trying to use a DataSet to retrieve the data necessary to display a Crystal Report. Just before the report is set to load, I have a message box to show the number of rows in the table. As of right now, when the message box comes up it says "3" which is right. I have 3 records currently in the table I am trying to read from. But the report is always blank with the column headings. [code]....
I have 2 databases that I am working with. One is a compant customer database and the other is my personal call log. Now I am creating a front end for the Call Log. I was updating my customer list by Importing 2 tables from the customer database, a series of queries would erase all of my info, take all the data from the imported tables and move it into mine then erase the imported tables.
Im trying to accomplish the same in my VB frontend. I can connect and fill datasets from the customer database. I can erase my tables. How do I take all of this data from the newly created dataset and move it over to my empty tables?
I have created an application in which I have to make a report with ReportViewver from Microsoft.Everything ok until now. I have created the report and for this report I have created a dataset. This dataset contains data for every month in every year from 2010 to 2015. With this dataset I am populating a graphic but my problem is that I want to select the year and create graphic for one year.I do not know how to insert a parameter in the dataset. In sql is very easy by in Access is different and if I try to put something like ...' where year_column=@year_parameter' I receive an error.
I've included an MS Access database in my WPF VB app, and I'm trying to link the data to an XCEED Datagrid. I have the following code in my testerDataSet.Designer.vb file which I assume is the funcion I should be referencing
Public ReadOnly Property Contact() As ContactDataTable Get Return Me.tableContact End Get End Property
I'm trying to get it to fill my datagirid using this <Grid.Resources> <xcdg:DataGridCollectionViewSource x:Key="cvs_contacts" Source="{Binding Path=Contact, *Source={x:Static testerDataSet}*}"/> </Grid.Resources> [Code] ..... What I'm trying to achieve is for the datagrid to display the data in the Contact datatable.
