Can't Add Records To A Reopened Dataset

Jul 16, 2009

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 - 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

[Code].....

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Can't Add New Records To A Reopened Dataset

Jul 16, 2009

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]....

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Dec 29, 2011

How do I update records in a dataset with records in a transaction file?

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Save Records To A Dataset?

Jul 18, 2010

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

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.net - Return Top 5 Records Of A Table In A Dataset?

Mar 30, 2010

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")

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Adding Records To An Existing Dataset?

Mar 12, 2009

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

[code].....

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How To Read Records (Rows) From DataSet

Jun 24, 2010

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.

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ListView To Display Records From DataSet

Feb 21, 2012

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")
[Code] .....

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Records Inserts Into Dataset, But Not In Database

Mar 11, 2012

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]

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Keep Data When Reopened?

Oct 9, 2009

Does anyone know if it is possible for data which a user has typed into a text box can remain when the application has been completely close and reopened again, and if all of the new windows can also reopen with the user inputted text.

I have been spending hours trying to work out how to do it but can't find a way!

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Dataset Merging Sorts Records Incorrectly?

Feb 4, 2011

I 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))

[Code].....

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.

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Display Dataset Records In Textboxes Instead Of GridView?

Jun 7, 2010

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.

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Get Accidental Deleting Records In Dataset Back?

Jun 19, 2011

I'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

[code]...

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Inserting Records To Two Separate Tables Via DataSet

Dec 19, 2009

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.

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May 2, 2011

I 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)

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VS 2005 Inserting Records From Dataset To Table?

May 11, 2012

Im 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")

[Code]...

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..

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Duplicate Records While Loading Data From XML File Into The Dataset?

Mar 15, 2011

I'm using the following code to write the data and schema of a dataset to a XML file.

[Code]...

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Jan 1, 2011

What I am trying to do is update existing records in a dataset with an unbound datagridview. It updates just fine but I have added a simple backcolor change for errors. What I don't understand is it will update fine but throw the backcolor = red at the same time. Am I overlooking something here?

vb.net
For Each dr As DataRow In Form1.DbDataSet.Tables("tblInventory").Select() For Each row As DataGridViewRow In DataGridView1.Rows If row.Cells("colInventoryID").Value = vbEmpty Then 'Do Nothing Else If dr.Item("Inventory ID").ToString() = row.Cells("colInventoryID").Value.ToString() And

[code]....

I'm trying to get this working in a test application before adding it to my main project, so that's why the names of controls are the way they are.The errors I'm trying to show are if "Inventory ID", "Cart" and "Shelf" do not match. When they don't match it doesn't update, which is what it is supposed to do. However, if they do match they update just fine but also show the Inventory ID error. If I comment out that ElseIf for the Inventory, it throws the Cart error. It's like the ElseIf blocks get called even if the If statement is true...

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Mar 15, 2010

I want to create a sub that gets changes from my typed dataset and datatable. But it says mydatatable is not a public member of dataset. Passing in as objects.

Public Sub GetRateChanges(ByVal myDataSet, ByVal myDataTable)
If myDataSet.HasChanges(DataRowState.Modified Or DataRowState.Added) Then
' Create DataSet variable.
Dim xDataSet As DataSet

[CODE]...

Another question. . I pull this infor from a view via tableadapter and it comes from several different tables.. How could I save my changes and insert the new records to the appropriate tables>?

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Threading Doesn't Impact The Performance While Reading Dataset Records?

Aug 29, 2011

I am having dataset with 5000 records.I am reading them in the below 2 functions and writing to excel.

FillDataRows1(worksheet)
FillDataRows2(worksheet)
private sub FillDataRow1(byval ws as worksheet)

[code]....

When I create thread also it is taking same time .

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Aug 6, 2009

how do you save the value of a variable for later if the application is closed and reopened in winforms, vb.net?

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Add Records Through DataSet Detail And Click Save It Temporarily Shows On DataGridView?

Apr 5, 2011

I don't know why it is not saved to the table. Here is my code.

Private Sub btnSave_Click(ByVal sender As System.Object, ByVal e As _
System.EventArgs) Handles btnSave.Click
Try

[Code]....

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Textboxes And Labels Contain Wrong Text After Saved And Reopened

Aug 8, 2009

Hi,
I have a program that has over 100 labels and over 40 textboxes. I was using the code below to save the text. However, when I open it, some of the text is in the wrong spot (for a label or textbox) and some of the text that shouldn't have been saved is. Is there a way that I can get all these labels' and textboxes' data saved? I would like to stick to the code somewhat if thats possible. I may be looking in the wrong direction too as I am very new. Thank you.




Private Sub SaveAsToolStripMenuItem_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles SaveAsToolStripMenuItem.Click




Dim myStream As Stream




Dim saveFileDialog1 As New SaveFileDialog()
saveFileDialog1.Filter =



"txt files (*.txt)|*.txt|All files (*.*)|*.*"


saveFileDialog1.FilterIndex = 2


saveFileDialog1.RestoreDirectory =


True





If saveFileDialog1.ShowDialog() = DialogResult.OK Then


myStream = saveFileDialog1.OpenFile()





If (myStream IsNot Nothing) Then





Dim myStreamWriter As StreamWriter = New StreamWriter(myStream)
myStreamWriter.WriteLine(txtName1.Text.ToString)

myStreamWriter.WriteLine(txtName2.Text.ToString)

myStreamWriter.Flush()

myStream.Close()






End If





End If

Private





Sub OpenProjectToolStripMenuItem_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles OpenProjectToolStripMenuItem.Click




Dim myStream As Stream = Nothing





Dim openFileDialog1 As New OpenFileDialog()
openFileDialog1.Filter =



"txt files (*.txt)|*.txt|All files (*.*)|*.*"


openFileDialog1.FilterIndex = 2


openFileDialog1.RestoreDirectory =


True





If openFileDialog1.ShowDialog() = System.Windows.Forms.DialogResult.OK Then





Try


myStream = openFileDialog1.OpenFile()





If (myStream IsNot Nothing) Then





Dim myStreamReader As StreamReader = New StreamReader(myStream)
txtName1.Text = myStreamReader.ReadLine()

txtName2.Text = myStreamReader.ReadLine

myStream.Close()






End If





Catch Ex As Exception
MessageBox.Show(



"Cannot read file from disk. Original error: " & Ex.Message)




Finally





If (myStream IsNot Nothing) Then


myStream.Close()





End If





End Try





End If

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Textboxes And Labels Contain Wrong Text After Saved And Reopened?

Nov 3, 2011

I have a program that has over 100 labels and over 40 textboxes. I was using the code below to save the text. However, when I open it, some of the text is in the wrong spot (for a label or textbox) and some of the text that shouldn't have been saved is. Is there a way that I can get all these labels' and textboxes' data saved? I would like to stick to the code somewhat if thats possible.

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Oct 19, 2011

Using VB.Net, how can I save values from a textbox and checkbox when the application is closed? When the user opens the application again, the textbox and checkbox should be filled in with the same values as before.Do I have to save these values in a database, or what other options are there?

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I can retrieve records from my Database fine, but I'm having trouble updating records. I am getting a syntax error on [code] I get this error when I change the Last Name (Row 0, Column 1). [code]

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Oct 27, 2009

how to get records into oracle database delete from db & update the records i have successfully connected my vb 2008 win form with oracle 10g.

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Access - Search The Records And Display The Records?

Feb 9, 2010

I want to search the records from the textbox and display the records to the datagridview, if there are no records, just display empty on the datagridview.

this is not working:
Dim sqlsearch As String
sqlsearch = "SELECT * FROM setting WHERE mname LIKE '%" & TextBox.Text

[code].....

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Mar 27, 2012

I have this piece of code wich works perfectly when inserting records into one table using records from another table. My question is that now i need to create another table by using records from 3 other tables (tables are related). Can i use aliases on the column names, like on Oracle SqlPlus? How will be the syntax of the 'INSERT INTO SQL statement?

Dim MyConn As ADODB.Connection
Dim MyRecSet As ADODB.Recordset
Dim tmpSQL As String
MyConn = New ADODB.Connection

[code]....

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VS 2008 Duplicate Records/Deleting Records?

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I am working on creating a program that records animal data (wombats) and stores it into a database, using vb.net. I am trying to add new records into a database but every time I click add, to execute that, there are duplicate records that gets added. How do i write the code so itonly adds it one time. I am using a data reader. Here is the

[Code]...

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