Binding to a Drop Down box with a sql server datasource

Try these,

Approach 1 . Binding dropdown using vb.net

Protected Sub Button1_Click1(sender As Object, e As EventArgs)

dim str As String = "Data Source=.;uid=sa;pwd=wintellect;database=rohatash"

	Dim con As New SqlConnection(str)
Dim anyFilter as string= ""
	Dim cmd As New SqlCommand("select textColumn,valueColumn from UserDetail where id = '" & anyFilter & "'", con)

	Dim Adpt As New SqlDataAdapter(cmd)

	Dim dt As New DataTable()

	Adpt.Fill(dt)

	ddl1.DataSource = dt

	ddl1.DataBind()
ddl1.DataTextField="textColumn"
ddl1.DataValueField="valueColumn"


End Sub

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Approach 2 : Using SqlDatasource control .
Binding Dropdown using SqlDatasource control without codebehind .
http://asp-net-example.blogspot.in/2008/12/aspnet-sqldatasource-example-using.html
Sqldatasource connectionstring parameter is configured in web.config file .

ConnectionString="<%$ ConnectionStrings:NorthwindConnectionString %>"
<connectionStrings>
  <add 
    name="NorthwindConnectionString" 
    connectionString="Data Source=serverName;Initial 
    Catalog=Northwind;Persist Security Info=True;User 
    ID=userName;Password=password"
    providerName="System.Data.SqlClient"
  />
</connectionStrings>

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More Info Regarding Connection string ,
http://msdn.microsoft.com/en-us/library/ms178411(v=vs.100).aspx

Meeran03