Set listbox column when get data from database

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Hi all,

I have a listbox which needed to fill data from database. How can I add more column into it? At my database i have tblCategory which has 2 column; ID and Category. When I add to my listbox with this 2 columns, it will insert as 1 index for each number followed by the Category in next. How can I get a row data and put in a single row in listbox but has many column? I have my code below that can load 1 column but not 2 column:

SQL

If rdr.HasRows Then
       While rdr.Read
                lbWhich.BeginUpdate()
                lbWhich.Items.Add(rdr.Item("ID"))
                lbWhich.Items.Add(rdr.Item("Category"))
                lbWhich.EndUpdate()
       End While
End If

Posted 2-Mar-14 16:24pm

Luiey Ichigo

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Asgard25 · Answer 1 · 2014-03-19T23:12:00

Try this, I use it all the time

smodule is your sql connection string

VB

Using sqlCon = New SqlConnection(sModule)
            sqlCon.Open()
            Dim cmd As New SqlCommand("your sql query which returns two values ", sqlCon)
            cmd.ExecuteNonQuery()
            Dim adp As New SqlDataAdapter(cmd)
            Dim dt As New DataTable()
            adp.Fill(dt)
            lbWhich.DataSource = dt
            lbWhich.DataTextField = "Category"
            lbWhich.DataValueField = "ID"
            lbWhich.DataBind()
            sqlCon.Close()
        End Using

You use a datatable that has two column that you fill from the DB, and than assign a column to the value and text fields of the listbox, but it will only show the text to the user.

Let me know if it helps or works

Marcin Kozub · Answer 2 · 2014-03-20T01:27:00

ListBox control can display only ONE data column. If you wish to display more than one data column you should try to use controls like ListView or DataGridView.

Here you have some informations:
http://www.dotnetperls.com/listview[^]
http://www.dotnetperls.com/datagridview-tutorial[^]

If you really need to use ListBox to display your data you can try to format strings while inserting data but still you will have only ONE column:

VB

lbWhich.Items.Add(String.Format("{0} - {1}", rdr.Item("ID"), rdr.Item("Category")))

More informations about string formatting you can find here:
http://msdn.microsoft.com/en-us/library/microsoft.visualbasic.strings.format%28v=vs.110%29.aspx[^]

Set listbox column when get data from database

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