Combobox The Field Names From A Dbase File?

Jan 31, 2011

i want to input into my combobox the field names from a dbase file. this is the code i have so far:

Dim table As DataTable
Dim restrictions() As String = {Nothing, Nothing, Nothing, "COLUMN"}
Using connection As New OleDb.OleDbConnection("Provider=Microsoft.Jet.OLEDB.4.0;Data

[code]....

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Reading File Names And Filling A ComboBox?

Sep 15, 2011

I tried the code below but unfortunately, all i get is a combobox with U,s,e,r,s, as each line in the items collection and not the filenames of the relevant files. 

the DirGetPath("Users") Function below returns my default document and application paths and appends "Users" to the end as the relevant files are stored in that Folder. 

All I get is a combo box with the items as U, s,e,r,s (i.e. Users spelled out). 

I tried all of the following as alternative methods too: 

System.IO.Path.GetExtension()
System.IO.Path.GetFileName()
System.IO.Path.GetFileNameWithoutExtension()

[Code]....

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Jun 9, 2011

I'm new to VB.net and i wanted to find out how i could load the names of files(in a specified dir) into a combobox?

1. get the number of files in specified dir

2. add names of files as items in combobox (using a loop structure)

3. when an item is selected. display the contents in a textbox[code]...

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Apr 10, 2012

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Private Sub BrowseButton_Click(sender As System.Object, e As System.EventArgs) Handles BrowseButton.Click
If FolderBrowserDialog1.ShowDialog() = DialogResult.OK Then
TextBox1.Text = FolderBrowserDialog1.SelectedPath
End If
[Code].....

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Aug 27, 2010

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Dim connectionString = "Provider=Microsoft.Jet.OLEDB.4.0;DataSource=C:devDATA.DBF;Extended Properties=dBASE IV;"
Dim connection As OleDbConnection = New OleDbConnection(connectionString)

[code].....

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Oct 28, 2011

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Apr 22, 2010

It is not so hard to get the field names from a database via GetOleDbSchemaTable and OleDbSchemaGuid.Columns. It works fine. The field names come i alphabetical order though. I really need them in the correct field no order.

Used code:

connection.Open()
Dim schemaTable As DataTable = _
connection.GetOleDbSchemaTable(OleDbSchemaGuid.Columns, New Object() {Nothing, Nothing, tblname, Nothing})

[Code].....

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Mar 2, 2010

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As I only want to read the data from the table, using SqlDataReader would be more efficient. But how can I then find what the header or column names are? The following code fails with a message that the SqlDataReader class does not have a member called 'Columns ':

Dim sqlCmd As SqlClient.SqlCommand = New SqlCommand(SQL, Connection)
Connection.Open()
Dim Reader As SqlClient.SqlDataReader = sqlCmd.ExecuteReader()
Dim FName0 As String = Reader.Columns(0).ColumnName() '<==FAILS
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Nov 4, 2009

I posted in the Database development forum, but no bites. I have field names in my Access table which have a number as the first character (i.e. "2x2"). Evidently, the DataAdapter doesn't like this. I'm able to view the data in a DataGridView, but I get an exception when I use DataAdapter.Update.

Can I modify my sql statement to make the command builder work or do I have rename the fields?

For example:

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Changing the names of the fields would be a huge pain-in-the-arse!

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Feb 25, 2012

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EDIT: JUST REALISED MY CODE WAS AWFUL, SO UPDATED:
Dim paymentTable As New DataTable("paymentTable")
For j = 0 To UBound(paymentTypes)

[code]....

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[code]...

is there any expression I can use to get the month format on the header of column.

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i just got it in the internet and edited it..

Dim xlApp As Microsoft.Office.Interop.Excel.Application
Dim xlWorkBook As Microsoft.Office.Interop.Excel.Workbook
Dim xlWorkSheet As Microsoft.Office.Interop.Excel.Worksheet[code]....

what I want to do is have a column name in the excel worksheet which is not included in the code..i'm getting the data from a datagridview but it only shows the data in the excel.. i also want the field name of these data to be shown..another, as you can see in the code given, the directory is fixed.. what do i have to do to choose a directory to save my work? and also, i have many gridviews and whenever i'm exporting my work to the excel worksheet, it always overwrites my work.. i want to choose the directory to save, also show the field names, and make a separate worksheet for every gridview..

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Nov 7, 2011

I want to populate my combobox with the list of banknames available in my database.. I tried doing so but I am getting a blank list. i.e.. shows no value in combobox!

Here is what I tried...
Private Sub ComboBox4_SelectedIndexChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles ComboBox4.SelectedIndexChanged
Try
'MsgBox("Open")
cn = New OleDbConnection("Provider=microsoft.jet.oledb.4.0;Data Source=E:\Project-Hemtech\HemDatabase1.mdb;")
[Code] .....

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Jul 2, 2009

I use the following code to populate a ComboBox with printer names.

Dim ps As PrinterSettings.StringCollection = PrinterSettings.InstalledPrinters
For i As Integer = 0 To ps.Count - 1
Me.CurrentPrinter.Items.Add(ps.Item(i))
Next

When the uses selects a printer from the ComboBox I then need to set a PrintDialog.PrintQueue to the PrintQueue that corresponds to the select name (which is a string). Here's the code I tried that's not working.

Dim dlg As New PrintDialog()
dlg.PrintQueue = GetPrintQueueFromCombo()
dlg.PrintVisual(canvas, "AlignPrinterSampleForm")

[Code].....

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Jun 17, 2010

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Apr 21, 2009

Ive completed this code, and it enters names into the combobox, but not any of the tables that i have created. I have checked that they have been created and they have. An ideas?

Dim DatabaseConn As OracleConnection
Dim DatabaseConnString As New OracleConnectionStringBuilder
With DatabaseConnString
.DataSource = "XE"
.UserID = "SYSTEM"

[Code]...

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Jun 22, 2010

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[Code]...

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FilterColumnsComboBox.DataSource = WOTable.Columns?
FilterColumnsComboBox.DisplayMember = ???
FilterColumnsComboBox.ValueMember = ???

[Code]....

I could hard-code in the column names ("WO_Number",WO_CustID","CustLastName", etc...), but would prefer to pick this up dynamically (partly because I want to reuse this code later).

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Jul 31, 2009

I have 2 table in my dataset i want to add both table column names to the combobox.. how can I add the other table to the datacolumncollection?

'gets column names from typed datset and uses as combobox in datagridview
Dim columns As DataColumnCollection = DataSet1.Tables(1).Columns
Dim column As DataColumn

[code]....

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Nov 28, 2011

I've created the beginnings of my new web application, but I am often coming up against the issue that ASP.NET renames elements IDs or in the case of form fields, their names.I have a form which is basically a sales system. It is essentially made up of two User Controls, one is a form for Customer Details (name, address etc) and the second is a form for the customer's purchases, it consists of a number lines dynamically created by Javascript created as you list the items the customer is purchasing. Both these sections are User Controls because they are to be used for other areas of the system where this data will need to be recalled/re-entered.

When the USer Control is loaded, the field which contains the Customers' Name is renamed "m$mainContent$customerForm$name" I understand where this comes from, "m" is the ID of my Master Page, "mainContent" is the main Content Placeholder and "customerForm" is the name of the User Control.In fact, in my case, this will always remain the same on all forms, so it is relative easy to overcome... but... suppose it wasn't I can see there are ways I could deal with this with Javascript, but the form doesn't need an AJAX submit, a normal Post will do fine for this, so when I open up the recieving page I want to call Request.Form("name")% to save the customer's name into the database, but of course I really need Request.Form("m$mainContent$customerForm$name")% How would I dynamically extract those prefixes from the posting form to ensure that if I rename anything or use it in a different scenario, the problem will not break it?

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May 24, 2012

I have a combobox which reads a directory and displays the file names in the combobox. What I'm trying to do is when a value is selected in the combobox I wish to display this in a label.

I have tried the following

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But it doesn't seem to work.

My coding to display value in the combobox

With Combobox1
.DisplayMember = "Name"
.ValueMember = "FullName"

[Code]....

I have the first snippet of coding in the Combobox1_SelectedIndexChanged event.

The "FullName" works with textbox1 when i select a value in the combobox but I want to display the "Name" in label1.text

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[code]....

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May 1, 2012

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Dim con As New OleDbConnection("Provider=Microsoft.Jet.OLEDB.4.0;Data Source=C:Documents and SettingsPC #6My Documentsstudent.mdb")
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[Code] .....

How could I get a combobox to just display just one field, like idk if I'm explaining myself correctly, like a SQL statement look like this:
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strSQL =
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Public

[Code].....

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I have a combobox which reads a directory and displays the file names in the combobox. What I'm trying to do is when a value is selected in the combobox I wish to display this in a label.

I have tried the following

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But it doesn't seem to work.

My coding to display value in the combobox

With Combobox1
.DisplayMember = "Name"
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[Code]....

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