I have written my main program which uses a datagridview however I seem to be struggling when trying to access the dataset items that have been deleted. Just before I commit the changes I want to record the user that deleted the items.
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I have a listbox and would like to save the items added/deleted when the form closes.
View 4 RepliesI have the following code to delete a row in an Access Database Table. It executes with no errors, but the row is not deleted.
Code:
Dim adpMasterRecipe As OleDb.OleDbDataAdapter
Dim dsMasterRecipe As New System.Data.DataSet
Dim iIndex As Integer[code].....
I am using VB.Net and EWS Managed API to create appointments in Exchange 2010. When i call the "Save" method, an appointment is also created in the "Deleted Items" folder in the Outlook. Why is it the appointment is created in the "Deleted Items" folder? How do i avoid the appointment created in the "Deleted Items" folder? I use below code to save an appointment in the Outlook Calendar:
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I have a form that has 1 text box and has 2 queries that locate the data. One is by customer ID and the other is by customer last name. They both work but when the code works and the user enters a customer ID and the query locates it then enters a customer last name it also locates it. If the user enters the same customer id again the query seems to fail. This is why I'm sure I need to add some kind of code to reset the Dataset.
Here's the code in the load sub procedure:
EditBoxSearch.Focus()
' Start out clean.
[code].....
I really am stuck. I can add records to a table ok . when i close and restart my code the new records are still there but deleteing does not work. I delete the records, they disappear. I close and restart the code agian but the deleted records return. this is my code.
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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.
View 1 RepliesIm pulling information from SQL and filling a datatset, im then trying to add the items from the dataset to a listbox and i cant figure it out, iv tried many ways but with no luck
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Iv checked and checked again and i know the DS has information in it
I use the following loop to add the Item "email" of the first 10 rows to a listbox.
For i = 0 To 10
s = ETAPDataSet.Tables(DBTable).Rows(i).Item("Email")
lstContacts.Items.Add(s.ToLower().Trim())
[code].....
What is the easiest way to export the items from an asp:listbox into a dataset?
View 1 RepliesI have a list box that is bound to a datatable, which works fine. The question I have is this. I have a list of values in the form of a sqlDatareader that I want to use to select values in the list box, that is to say if the value from from the datareader matches the value member from the row in the listbox then select the row. I've come up with the following code, but can't find the syntax to utilize the SetSelected method.[code]...
View 5 RepliesI am trying to utilize the access database, but I'm getting an error message: Value cannot be null. Parameter name: dataSet
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That's the code I'm using, why I'm getting this error?
Visual studio 2005 - vb.net..I have a user control on a form containing 15 combo boxes.All contain Y, N, and blank (for Yes, No, or blank) in the Items Collection property.Each of the combo boxes have a binding source to the same table, different fields.When you select a value Y, N, or blank for any of the fields and do a save, the values save while the application is open.Once you close and reopen, the values are gone.It appears the dataset does not recognize the change, so the values are not getting stored in the database table. Is there something I can do or put in one of the events that would identify this as a change.
View 3 Repliesdoes VBasic allow a MS Access Database DataSet create a Stored Procedure or will it only allow SQL Database DataSet create SP...
View 4 RepliesI'm just starting to explore VB.NET datasets but I'm stuck on a (probably) trivial problem.I have declared a dataset (let's call it 'Fred') as public in a VARs module.In the main form in a sub routine called at the start of the project I connect to an Excel spreadsheet and read it into the 'Fred' dataset into one table (called 'Table')I then bind the dataset table to a datagridview and I can see the spreadsheet. Which is very nice :-)
Having loaded the dataset I want to be able to get some values so I created a button and used the following [code]....
I am developing an app. with VB and i have stumbled across a verry eary problem. Until 2 weeks ago everything was working perfectly but now here what is my problem:
View 2 RepliesI have access Query have more than one table. I want to insert into it. I cannot insert into it by CommandBuilder coz CommandBuilder for one table only so how can I do that using DataAdapter with dataset.
View 6 RepliesSo i have a DB with 3 tables. User Table with U_ID and U_Name, Class with C_ID, and C_Name and User_Class Table with U_ID and C_ID. Foreign keys are set.I want to display the classes associated with the selected user. The user is identified by their name. I know these are the two SQL statements I need to execute:SELECT U_ID FROM User WHERE U_Name = current_U_name
then
SELECT C_ID FROM User_Class WHERE U_ID = current_U_ID
then
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The SQL string won't return data from Access. I've tested this exact SQL String in Access and it works fine.First of all, Am I getting a SQL query from Access in the proper manner?Second... should I be using a stored procedure for this? Or is making a query from tables like this a good practice? Third, if I'm doing it right, why won't Access query return and fill my dataset?These are the results I'm getting.
Connection State = 1
Tables in Dataset = 0
Where am I going wrong?
SQL:
SELECT PageSetupData.Size, PageSetupData.Category,
PrinterList.Location, PageSetupData.isPlotter, PrinterList.LocationSuffix,
PaperSizeData.PrinterName, PrinterList.HasAltPrinter, PageSetupData.SetupTitle,
[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?
new to vs2010 express trying to accomplish a simple task read records from a sql server DB table and add them to a table (different format eventually) in an access DB Sample code below seems to work ok up to the point of the data actually showing up in the access table.
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I'm confused about DataSources and DataSets.I created a DataSource (DataSet?) via the DataSource wizard called PPIDataSet. This has tables in it Customer, Vendor, Orders, etc.Now I want to access the data in these tables via code. So I'm expecting to be able to do PPIDataSet.Customer.AddRow or something like that. However, when I access the PPIDataSet object, in IntelliSense,I only get PPIDataSet.CustomerDataTable PPIDataSet.CustomerRow
How do I access the table data via the DataSet? Or do I have to access it some other way?
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.
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I have been allover the web and can't find a solution that works.I am creating a signout system using An access DB I call student info using their ID# using FillBy to fill a form I call Equipment Info using a Barcode # Using FillBy1 and fill the rest of the form I then use a OleDb.OleDbConnection To add a row to the DB this adds the row to My Access table and works fine.Now the problem when I go to sign the equipment back in the equipment can't be found ( I am loading the record using the barcode#and Fillby for that tableAdapter But if I stop debugging and start again I can find it.
So I am assuming that I am writing data directly to access but calling data from the dataset which I can only get to update when I restart the program.The question is how can I get the dataset and the database to both be updated with the same data at the same time without stopping and restarting my project?
In my VB.Net desktop application, I have several places where I am accessing a table, both for reading and for updating. For example:
Dim tempCount As Integer = Glbl.GlobalDataSet.Tables("Profiles").Rows.Count
The above does not work. However, the following does:
Dim tempCount As Integer = Glbl.GlobalDataSet.Tables(4).Rows.Count
I am pretty sure it was working in th past (I have recently switched to VS 2010 - could this have anything to do with it?) but it is not working now.
How can I make the first statement work, so can access tables by table name instead of by index?
Automatic update Dataset after change in Access
View 8 RepliesI used this code to assign the primarykey from my MS Access database to my DataSet in my project:
Dim col(1) As DataColumn
col(0) = ds.Tables("Filmer").Columns(0)
ds.Tables("Filmer").PrimaryKey = col
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I think this may be a usual issue but I am not able to find much info. There is a master customer database and a call log database at work. The call log database has two tables that are updated from the master database monthly. Now I am writing this vb frontend for the call log database and cannot figure out the update portion
For p = 0 To maxrowsC (currently around 1000 rows)
With myCommand.Parameters
.AddWithValue("@HEATSeq", dsCallLog.Tables("ConfigDS").Rows(p).Item(0))
[code].....
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.
View 5 RepliesI 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.
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