I have used VB6 for all kinds of database programming. Now I am fairly new to the vb.net. How do we read the records (rows) from a dataset and manipulate data? I want to populate a combobox or a datagrid with a recordset (in VB6 language). What is the .net equivalent of ado dataset, and how do I use it. I have tried several ways using dataadapters and dataset, etc.
View 4 RepliesHow do I update records in a dataset with records in a transaction file?
View 3 RepliesI 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.
View 2 RepliesI use this code to get row id from dgv to delete that row after that
Me.
TextBox1.Text = DataGridView1.Rows(e.RowIndex).Cells("id").Value
Now how can I amend this code to use it to get sevral rows ids in case that I want to delete more than one row ?
Below is my export to csv from listview using vb.net
Function ExportListview2CSV(ByVal lstview As ListView) As Boolean
Dim saveFileDialog1 As New SaveFileDialog()
Dim csvFileContents As New System.Text.StringBuilder
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i want to exclude the records from the 1st and last rows where should i make chages in above code
I'm following a tutorial using serialization/saving records.I can make records, display them ok in a datgridview and then save them ok using serialization. Then I can reopen the programme and reload the dataset from the deserialised file, and show the records ok [code]....
View 1 RepliesI'm following a tutorial using serialization/saving records. I can make records, display them ok in a datgridview and then save them ok using serialization. Then I can reopen the programme and reload the dataset from the deserialised file, and show the records ok - but I cannot add any more records to the datagridview.
Here is my code:
Imports System.IO
Imports System.Runtime.Serialization
Imports System.Runtime.Serialization.Formatters.Binary
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i have a register form and a dataset called clifs_project21Dataset.xsd
i just want to update
de info from register form to dataset and i use acces 2007
I want to insert records from a datagrid with multiple rows, into the database, is it possible?
View 1 RepliesI am using datarepeater on my windows form to populate records from a temp table. I want to write query to insert records for an employee in a single row rather than multiple rows. For example: I am displaying records of one month only. so i know the definite number of columns. Normally if we use select * from Temp ' it will display and i can populate in a datagrid.
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Assuming this schema:
Table1 (Col1 int, Col2 str, Col3 str, ...)
Table2 (Col1 int, Col2 str, Col3 str, ...)
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I need to select all records from Table2 where there are NO records in Table1 having matches of both Col2 & Col3. For instance, Table 2 records where Table1.Col2 <> Table2.Col2 AND Table1.Col3 <> Table2.Col3.
I want to return the top 5 records of a table in a dataset for datagrid view. The following does not work.
DataGridView.DataSource = DS.Tables("TABLENAME").Select("SELECT TOP 5")
having trouble adding records to an existing dataset, I tried the following code but it made a new connection which I don't want:
Dim inc As Integer
Dim con As New OleDb.OleDbConnection
Dim da As OleDb.OleDbDataAdapter
Dim sql As String
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I am trying to use a ListView to display records from a dataset. In these records, I have 4 columns: EmployeeID, EmployeeName, CustomerID, and CustomerName. It is possible for both the Employee and Customer to be listed multiple times, but with different combinations.
For instance, if we have Employees 1, 2, 3 and Customers A, B, C we could have:
(1A)
(1B)
(1C)
(2A)
(2B)
etc.
What's going on with mine is I add say (1A) to the listView and then when it tries to add (1B) I get an error saying that it cannot add the same item.
Here is my code so far:
With list
.Clear()
.Columns.Add("Employee ID")
.Columns.Add("Employee Name")
.Columns.Add("Customer ID")
.Columns.Add("Customer Name")
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so I have chosen to add the database to my vb project when the connection was being set up in Visual Studios 2010. so the code below inserts it to dataset, but database doesnt seem to be updated, I am trying to add new records to Business and Login tables and have defined two functions to assign the value of text boxes to the fields on the records: [Code]
View 6 RepliesIm trying to read A .CSV file into the database.Every time at exactly 100 records the code seems to stop executing.Strange thing is, that when I step through the code manually, the code DOES run to the end...and a total of 403 records are imported.So NO errors are thrown, and no weird data is present in the row at which the code stops running (which makes sense, since the code is all executed when stepped through manually)[code]
View 3 RepliesI have a parent/child relation I am trying to create fow 2 datasets.The parent ds consusts of a range of PO Header information
After I fill this dataset I loop through it getting the PO number. I then take that value and execute another sql statement on the DETAIL file and fill a dataset(dtlDS) for EACH row in the parent. How do I add to this dtlDS for each row? I am getting no CHILD data in the merge. Should I be filling to a datatable and do an add.row and THEN dump into the dtlDS?
I have a model that returns a dataset to a view and builds a list. The crazy thing is that I have tested this code with IE, Safari on Mac and Windows, Chrome and Opera and all return data. However, on the iPad or iPhone, zero rows are returned from the dataset object. It seems that the model is in fact passing the dataset to the view. I am using jquerymobile to render the view for the iOS devices and have taken that out of the mix to test and it still doesn't work.
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how can I test if a dataset has rows? I'm trying to see if my sql procedure call managed to fill up my dataset.Also, is there an easy way to print the rows to a label?
View 3 RepliesI have a temp dataset (ds) that I load with data from a filtered dataset. I run this in a loop essentially populating the temp dataset with select records from the main dataset. I then merge the temp dataset back to the main dataset (dsSpecifics). The issue I am running into is that the records are loaded into the temp dataset in the way they were merged. record 1 is at row 0, record 2 is at row 1 and so on. When I merge the ds back to dsSpecifics, they load out of order but in a predictable way. Here is a snipit of the code:
myAircraft.Reset()
While myAircraft.MoveNext()
Me.TblAircraftSpecificTableAdapter.FillBy(Me.DsSpecifics.tblAircraftSpecific, CInt(myAircraft.Key.ToString))
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It seems that after the final merge, the merge starts with the last record of ds and and then rolls over to record position 0.
I want to display dataset records in textboxes instead of GridView. I also want to provide next, previous and search option to navigate between records in the dataset. And I also want to provide update and delete buttons to update and delete the current record that is being displayed.
View 4 RepliesI'm having a problem with editing records in my DataSet. When adding a record to the database, I have a button that adds to the binding source
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I've got a form where a user enters data. When the user submits that data, it inserts a record to two separate tables via a dataset. One of the records has no problem being saved into the database (in the table it was put into), but the other record seems to temporarily be in there (according to a third form), because it exists for the duration of the application, but when I exit, and then check the database, it's not there, and it's not shown on the third form when I restart the application again either.
View 11 RepliesI need to add rows to a DataSet using databound controls in VB.net. I've set up the data bindings themselves, they're bound the the correct controls, and the BindingSource uses the correct DataSet. The DataSet is filled from the DataAdapter correctly, and the binding source works, as the navigation controls all work fine. How do I use the controls to add new data to the DataSet? I guess there must be some kind of end-edit involved which would enable me to insert, update and delete records in the DataSet (as you would use with DataGridViews)
View 1 RepliesIm inserting records from a dataset to access table by selecting a key(dix) from a listbox. below is the code Sub loop2(ByVal dix)
ds.Clear()
table_name1 = "TestStepDetailTable"
con.ConnectionString = dbprovider
con.Open()
'MsgBox("database is open")
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The problem is when i insert a first key(dix) records its coying fine. But when i insert the second set of records in is sorting int he table. but when i looked at the dataset by using gridview the recods appears in a right order. but the updated table is somewat sorted order. Is there any possible way to insert the records in the same order in the dataset..
I have a piece of code that works for adding multiple rows to a dataset but I think that it is a lot of code and thought maybe someone may know a better way of doing it. I need to add rows to the dataset based on the selection of a combo box. ie if the user selects 15 the the program adds 15 rows to the dataset.
Case cboQty.SelectedItem = 3
Try
Dim dr As DataRow
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I have been looking for some syntax online to help me do this, but i cannot seem to find anything. I am trying to move some rows from a table in an access database to another on a click event handler.
One of the tables names is "Basket", and the other is order.So far i have this.
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I am new to vb.net and I am trying to query a database and print out the records in the row to the console window. I got it to work, but I have a feeling that there is a more concise way to do this. One thing that I am sure is wrong is that I had to convert the dataset to a datatable to be able to retrieve the values. Is that correct? Could you take a look at the code below (especially the for loop) and let me know what I can improve upon?
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I pass it a valid dataset that has the department name and the Department id as a number..20, 40, 30..... I want to get the department number.. I pass it HR(which is in the ds.table) but I am getting an error on the rows.find() "Input string was not in a correct format" it is a string.. what else could i be doing wrong here...
Public Function GetDeptID(ByRef ds As DataSet, ByVal strDepartment As String) As Integer
'Dim dr As DataRow
' Check to see if date is already in the table
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My Application uses For...Next loops to read a spreadsheet into a DataSet and then display information from it based on the results of search conditions (search term and a date range).I'm having a problem with the data where, if I run a search that should return the first 400 rows in the spreadsheet, I'm only getting around 200 results. I know the search should return the 400 rows because I checked it in the spreadsheet before running the search.I think my problem might be caused by my date comparisons. I think the problem might be that I'm comparing String valueHere's my code:
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
If ListBox1.Items.Count <> 0 Then : ListBox1.Items.Clear() : End If
[code].....