Binding data to DropDownList...

RAB

I have the following code:

<%@ Page Language="VB" %>
<script runat="server">

Function GetName() As System.Data.IDa taReader
Dim connectionStrin g As String = 'path to datasource
Dim dbConnection As System.Data.IDb Connection = New
System.Data.Ole Db.OleDbConnect ion
(connectionStri ng)

Dim queryString As String = "SELECT [Customer].[ID],
[Customer].[LName], [Customer].[FName] FROM
[Customer]"
Dim dbCommand As System.Data.IDb Command = New
System.Data.Ole Db.OleDbCommand
dbCommand.Comma ndText = queryString
dbCommand.Conne ction = dbConnection

dbConnection.Op en
Dim dataReader As System.Data.IDa taReader =
dbCommand.Execu teReader

(System.Data.Co mmandBehavior.C loseConnection)

Return dataReader
End Function

Sub Page_Load(sende r As Object, e As EventArgs)
Listbox1.dataso urce = GetName()
Listbox1.databi nd()
End Sub

</script>
<html>
<head>
</head>
<body>
<form runat="server">
<p>
</p>
<p>
<asp:ListBox id="ListBox1" runat="server"
DataTextField=" LName" DataValueField= "ID"></asp:ListBox>
</p>

<p>

</p>
</form>
</body>
</html>
If I wanted to populate my dropdownListbox with first and last name,
how would I code this?

Thanks,
RABMissouri2007

Mar 12 '07 #1

Subscribe Reply

1212

mark4asp

On 12 Mar, 16:00, "RAB" <rabmisso...@ya hoo.comwrote:

I have the following code:

<%@ Page Language="VB" %>
<script runat="server">

Function GetName() As System.Data.IDa taReader
Dim connectionStrin g As String = 'path to datasource
Dim dbConnection As System.Data.IDb Connection = New
System.Data.Ole Db.OleDbConnect ion
(connectionStri ng)

Dim queryString As String = "SELECT [Customer].[ID],
[Customer].[LName], [Customer].[FName] FROM
[Customer]"
Dim dbCommand As System.Data.IDb Command = New
System.Data.Ole Db.OleDbCommand
dbCommand.Comma ndText = queryString
dbCommand.Conne ction = dbConnection

dbConnection.Op en
Dim dataReader As System.Data.IDa taReader =
dbCommand.Execu teReader

(System.Data.Co mmandBehavior.C loseConnection)

Return dataReader
End Function

Sub Page_Load(sende r As Object, e As EventArgs)
Listbox1.dataso urce = GetName()
Listbox1.databi nd()
End Sub

</script>
<html>
<head>
</head>
<body>
<form runat="server">
<p>
</p>
<p>
<asp:ListBox id="ListBox1" runat="server"
DataTextField=" LName" DataValueField= "ID"></asp:ListBox>
</p>

<p>

</p>
</form>
</body>
</html>

If I wanted to populate my dropdownListbox with first and last name,
how would I code this?

Thanks,
RABMissouri2007

It is always a good idead to specifically name the fields in your data
source to which you're binding, so that the Value and Text are made
explicit for the DataValueField and DataTextField properties.

Listbox1.DataSo urce = GetName();
Listbox1.DataVa lueField = "myValueNam e";
Listbox1.DataTe xtField = "myTextName ";
Listbox1.DataBi nd();

Mar 12 '07 #2

Lloyd Sheen

Easiest way to to change the select to output the name in the format you
wish to display. Something like "SELECT [Customer].[ID],
[Customer].[LName] + ', ' + [Customer].[FName] FROM
[Customer]"
Lloyd Sheen
"RAB" <ra*********@ya hoo.comwrote in message
news:11******** **************@ q40g2000cwq.goo glegroups.com.. .

>I have the following code:

<%@ Page Language="VB" %>
<script runat="server">

Function GetName() As System.Data.IDa taReader
Dim connectionStrin g As String = 'path to datasource
Dim dbConnection As System.Data.IDb Connection = New
System.Data.Ole Db.OleDbConnect ion
(connectionStri ng)

Dim queryString As String = "SELECT [Customer].[ID],
[Customer].[LName], [Customer].[FName] FROM
[Customer]"
Dim dbCommand As System.Data.IDb Command = New
System.Data.Ole Db.OleDbCommand
dbCommand.Comma ndText = queryString
dbCommand.Conne ction = dbConnection

dbConnection.Op en
Dim dataReader As System.Data.IDa taReader =
dbCommand.Execu teReader

(System.Data.Co mmandBehavior.C loseConnection)

Return dataReader
End Function

Sub Page_Load(sende r As Object, e As EventArgs)
Listbox1.dataso urce = GetName()
Listbox1.databi nd()
End Sub

</script>
<html>
<head>
</head>
<body>
<form runat="server">
<p>
</p>
<p>
<asp:ListBox id="ListBox1" runat="server"
DataTextField=" LName" DataValueField= "ID"></asp:ListBox>
</p>

<p>

</p>
</form>
</body>
</html>
If I wanted to populate my dropdownListbox with first and last name,
how would I code this?

Thanks,
RABMissouri2007

Mar 12 '07 #3

RAB

What would one set Listbox1 DataValueField equal to, if one used the
ammended select statement?

Thanks,
RABMissouri2007

Mar 12 '07 #4

RAB

I figured it out. If one alters the select statement to the
following:

"SELECT [Customer].[ID],
[Customer].[LName] + ', ' + [Customer].[FName] as FullName FROM
[Customer]"
Then use "FullName" for the DataValueField

RABMissouri2007

Mar 12 '07 #5

Lloyd Sheen

Each item in the listbox has both a display and value. When you select the
item you will use the value rather than the display value.

To do this you will have to tell the binding which column has the display
value and which has the value value.

Use the DataTextField and DataValueField to set those. You will need to
change your select statement to then return both the display and actual
values to the datareader.

Lloyd Sheen

"RAB" <ra*********@ya hoo.comwrote in message
news:11******** **************@ s48g2000cws.goo glegroups.com.. .

What would one set Listbox1 DataValueField equal to, if one used the
ammended select statement?

Thanks,
RABMissouri2007

Mar 12 '07 #6

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