<asp:Image ID="Image1" runat="server" 
    ImageUrl='<%# Eval("Picture", "~/Folder/{0}") %>' 
    Visible='<%# !(Eval("Picture") is DBNull) %>'
/>

Dim s As String = ""
While y.Read()
    s &= y("Lastname") & " " & y("id") & " " & y("Firstname") & vbCrLf
End While
y.Close()
textbox9.Text = s

ListItem li = new ListItem("Text", "Value");
li.Attributes["title"] = "Tooltip";

protected void GridView1_RowDataBound(object sender, GridViewRowEventArgs e)
{
    if (e.Row.RowType == DataControlRowType.DataRow)

...
Dim list As New ArrayList
For Each i As ListItem In cblTestItem.Items
   If i.Selected Then
      list.Add(i.Value)
   End If
Next
Dim arr() As String = list.ToArray(GetType(String))
Dim test_item As String = String.Join(",", arr)
...

// using System.Data.OleDb; <-- replace this with
using System.Data.SqlClient;
...
// string cs = "Provider=Microsoft..."; <-- replace this with
string cs = "...";
// where ... is connection string for SQL Server

// tested with IE7 and FF3 only
var txt = document.getElementById("TextBox1");
var s1 = txt.value;

// tested with IE7 and FF3 only
var ddl = document.getElementById("DropDownList1");

...
FormsIdentity fi = (FormsIdentity)HttpContext.Current.User.Identity;