using System;
using System.Data;
using System.Configuration;
using System.Collections;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
using System.Data.SqlClient;
public partial class AddressBook : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
if (!IsPostBack)
{
BindGrid();
}
}
private void BindGrid()
{
// Define data objects
SqlConnection conn;
SqlCommand comm;
SqlDataReader reader;
// Read the connection string from Web.config
string connectionString = ConfigurationManager.ConnectionStrings["Dorknozzle"].ConnectionString;
// Initialize connection
conn = new SqlConnection(connectionString);
// Create command
comm = new SqlCommand(
"SELECT EmployeeID, Name, City, State, MobilePhone FROM Employees", conn);
// Enclose database code in Try-Catch-Finally
try
{
// Open the connection
conn.Open();
// Execute the command
reader = comm.ExecuteReader();
// Fill the grid with data
grid.DataSource = reader;
grid.DataKeyNames = new string[] { "EmployeeID" };
grid.DataBind();
// Close the reader
reader.Close();
}
finally
{
// Close the connection
conn.Close();
}
}
protected void grid_SelectedIndexChanged(object sender,
EventArgs e)
{
BindDetails();
}
private void BindDetails()
{
// Obtain the index of the selected row
int selectedRowIndex = grid.SelectedIndex;
// Read the employee ID
int employeeId = (int)grid.DataKeys[selectedRowIndex].Value;
// Define data objects
SqlConnection conn;
SqlCommand comm;
SqlDataReader reader;
// Read the connection string from Web.config
string connectionString =
ConfigurationManager.ConnectionStrings[
"Dorknozzle"].ConnectionString;
// Initialize connection
conn = new SqlConnection(connectionString);
// Create command
comm = new SqlCommand(
"SELECT EmployeeID, Name, Address, City, State, Zip, " +
"HomePhone, Extension FROM Employees " +
"WHERE EmployeeID=@EmployeeID", conn);
// Add the EmployeeID parameter
comm.Parameters.Add("EmployeeID", SqlDbType.Int);
comm.Parameters["EmployeeID"].Value = employeeId;
// Enclose database code in Try-Catch-Finally
try
{
// Open the connection
conn.Open();
// Execute the command
reader = comm.ExecuteReader();
// Fill the grid with data
employeeDetails.DataSource = reader;
employeeDetails.DataKeyNames = new string[] { "EmployeeID" };
employeeDetails.DataBind();
// Close the reader
reader.Close();
}
finally
{
// Close the connection
conn.Close();
}
}
protected void employeeDetails_ModeChanging(object sender, DetailsViewModeEventArgs e)
{
// Change current mode to the selected one
employeeDetails.ChangeMode(e.NewMode);
// Rebind the grid
BindDetails();
}
}
