Web Forms :: How To Load Two Pages Once The User Log In
Mar 18, 2010
I am trying to load two pages in two different windows (at the same time). I have three pages in my application
1) Login.aspx
2) TakeOrder.aspx
3) OrderSummary.aspx
When application is executed, user is presented with Login.aspx page. If the user is authenticated, I want TakeOrder.aspx and OrderSummary.aspx to load in two different windows.
TakeOrder.aspx is used to take orders and OrderSummary.aspx shows the summary of the orders which have been placed since morning.
I can put a button on TakeOrder.aspx to redirect to OrderSummary.aspx (but such logic is not allowed by the client).
Also when the user takes an order (I will add the order to th database), I want to refresh ( do postback) OrderSummary.aspx to show newly placed order for e.g.
OrderSummary.aspx is showing "n" orders, now the user takes an order "x", I want OrderSuammyry.aspx page to show "n+1" orders (including order "x")
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The problem I am facing Admin.
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i have encountered a problem on how to load the database images to be display in the Image content in the web pages. I am currently using an Access database with a table "Images" and there are 4 columns in it. "ImageID", "ImageDescription","ImageofPicture","Description". Below is my code: Words highlighted in bold is where the problem occurs. No image is display in the Image box but theres a red cross at the top left. Image description is displaying fine in the textboxes
int MaxRows = 0;
int inc = 0;
int inc1 = 1;
int inc2 = 2;
int inc3 = 3;
System.Data.OleDb.OleDbConnection cs;
System.Data.OleDb.OleDbDataAdapter dta;
DataSet ds1;
byte[] photo_array;
protected void Page_Load(object sender, EventArgs e)
{
cs = new System.Data.OleDb.OleDbConnection();
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ds1 = new DataSet();
string sql = "SELECT * From Images ORDER BY ImageDescription ASC";
dta = new System.Data.OleDb.OleDbDataAdapter(sql, cs);
cs.Open();
dta.Fill(ds1, "Images");
Navigation();
//MaxRows equals to the total amount of records from the database
MaxRows = ds1.Tables["Images"].Rows.Count;
}
private void Navigation()
{
//get the first records from the database
DataRow dtaRow = ds1.Tables["Images"].Rows[inc];
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TextBox3.Text = dtaRow.ItemArray.GetValue(1).ToString();
TextBox7.Text = dtaRow.ItemArray.GetValue(3).ToString();
DataRow dtaRow1 = ds1.Tables["Images"].Rows[inc1];
TextBox4.Text = dtaRow1.ItemArray.GetValue(1).ToString();
TextBox2.Text = dtaRow1.ItemArray.GetValue(3).ToString();
DataRow dtaRow2 = ds1.Tables["Images"].Rows[inc2];
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TextBox8.Text = dtaRow2.ItemArray.GetValue(3).ToString();
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TextBox6.Text = dtaRow3.ItemArray.GetValue(1).ToString();
TextBox9.Text = dtaRow3.ItemArray.GetValue(3).ToString();
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if (ds1.Tables[0].Rows[inc][2] != System.DBNull.Value)
{
Image5.ImageUrl = "ImageHandler.ashx?ImageDescription=" + TextBox3.Text;
}
if (ds1.Tables[0].Rows[inc1][2] != System.DBNull.Value)
{
Image5.ImageUrl = "ImageHandler.ashx?ImageDescription=" + TextBox4.Text;
}
if (ds1.Tables[0].Rows[inc2][2] != System.DBNull.Value)
{
Image5.ImageUrl = "ImageHandler.ashx?ImageDescription=" + TextBox5.Text;
}
if (ds1.Tables[0].Rows[inc3][2] != System.DBNull.Value)
{
Image5.ImageUrl = "ImageHandler.ashx?ImageDescription=" + TextBox6.Text;
}
}
}
Code for ImageHandler.ashx:
using System;
using System.Web;
using System.Data.OleDb;
public class ImageHandler : IHttpHandler {
public void ProcessRequest (HttpContext context) {
string qry = "SELECT ImageofPicture FROM Images WHERE ImageDescription = ?";
string connect = "Provider=Microsoft.Jet.OleDb.4.0;Data Source=C:\Users\Admin\Desktop\Website1\App_Data\Database.mdb";
using (OleDbConnection conn = new OleDbConnection(connect))
{
if (context.Request.QueryString["id"] != null)
{
OleDbCommand cmd = new OleDbCommand(qry, conn);
cmd.Parameters.AddWithValue("", context.Request.QueryString["id"]);
conn.Open();
using (OleDbDataReader rdr = cmd.ExecuteReader())
{
if (rdr.HasRows)
{
rdr.Read();
context.Response.ContentType = "image/jpeg";
context.Response.BinaryWrite((byte[])rdr["ImageofPicture"]);
}
}
}
}
}
public bool IsReusable {
get {
return false;
}
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