Load Different Size And Weight Images From One Column Image Data Type?
Aug 8, 2010
I'm going to design a database for an image gallery in ASP.NET Web App . Because of some reasons I've decided to store the image in Data Base , Not the address .
In the application i need two or more different size and weight image for each image that the admin insert .For instance , One of them is small and lightweight thumbnail , and the other is Original big one .
My question is : Should i have two column ( one for lightweight and small thumbnail and one for big and full size one ) in DataBase Or Is there any way i could load different size and wight image from Big and original image column ?
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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();
//tell the program where the database is located
cs.ConnectionString = "Provider=Microsoft.Jet.OleDb.4.0;Data Source=C:\Users\Admin\Desktop\Website1\App_Data\Database.mdb";
ds1 = new DataSet();
string sql = "SELECT * From Images ORDER BY ImageDescription ASC";
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Navigation();
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}
private void Navigation()
{
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TextBox3.Text = dtaRow.ItemArray.GetValue(1).ToString();
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DataRow dtaRow1 = ds1.Tables["Images"].Rows[inc1];
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TextBox2.Text = dtaRow1.ItemArray.GetValue(3).ToString();
DataRow dtaRow2 = ds1.Tables["Images"].Rows[inc2];
TextBox5.Text = dtaRow2.ItemArray.GetValue(1).ToString();
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{
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{
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if (ds1.Tables[0].Rows[inc2][2] != System.DBNull.Value)
{
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if (ds1.Tables[0].Rows[inc3][2] != System.DBNull.Value)
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Image5.ImageUrl = "ImageHandler.ashx?ImageDescription=" + TextBox6.Text;
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}
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 = ?";
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{
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{
OleDbCommand cmd = new OleDbCommand(qry, conn);
cmd.Parameters.AddWithValue("", context.Request.QueryString["id"]);
conn.Open();
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{
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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