Step 1. First We will create Table.
Now code to insert image in Database
SaveImage.aspx
Design.
<form id="form1" runat="server">
<asp:FileUpload ID="FileUpload1" runat="server" />
<asp:Button ID="Button1" runat="server"
Text="Button" onclick="Button1_Click" />
</form>
Code.
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Data.SqlClient;
using System.Configuration;
using System.Data;
using System.Data.SqlClient;
public partial class saveimageinbinary : System.Web.UI.Page
{
SqlConnection conn;
string s = ConfigurationManager.ConnectionStrings["imageconverter"].ConnectionString.ToString();
protected void Page_Load(object sender, EventArgs e)
{
conn = new SqlConnection(s);
}
protected void Button1_Click(object sender, EventArgs e)
{
StartUpLoad();
}
private void StartUpLoad()
{
//get the image file that was posted (binary format)
byte[] theImage = new byte[FileUpload1.PostedFile.ContentLength];
HttpPostedFile Image = FileUpload1.PostedFile;
Image.InputStream.Read(theImage, 0, (int)FileUpload1.PostedFile.ContentLength);
int length = theImage.Length; //get the length of the image
string fileName = FileUpload1.FileName.ToString(); //get the file name of the posted image
string type = FileUpload1.PostedFile.ContentType; //get the type of the posted image
int size = FileUpload1.PostedFile.ContentLength; //get the size in bytes that
if (FileUpload1.PostedFile != null && FileUpload1.PostedFile.FileName != "")
{
//Call the method to execute Insertion of data to the Database
ExecuteInsert(theImage, fileName, length);
Response.Write("Save Successfully!");
}
}
private void ExecuteInsert(byte[] Image, string Name, int length)
{
string sql = "INSERT INTO TblImages (Image, ImageName) VALUES "
+ " (@img,@imgname)";
// SqlCommand cmd = new SqlCommand(sql,conn);
// conn.Open();
//// cmd.ExecuteNonQuery();
try
{
conn.Open();
SqlCommand cmd = new SqlCommand(sql, conn);
SqlParameter[] param = new SqlParameter[4];
param[0] = new SqlParameter("@img", SqlDbType.Image, length);
param[1] = new SqlParameter("@type", SqlDbType.NVarChar, 50);
param[2] = new SqlParameter("@imgsize", SqlDbType.BigInt, 9999);
param[3] = new SqlParameter("@imgname", SqlDbType.NVarChar, 50);
param[0].Value = Image;
param[1].Value = Type;
param[2].Value = Size;
param[3].Value = Name;
for (int i = 0; i < param.Length; i++)
{
cmd.Parameters.Add(param[i]);
}
cmd.CommandType = CommandType.Text;
cmd.ExecuteNonQuery();
}
catch (System.Data.SqlClient.SqlException ex)
{
string msg = "Insert Error:";
msg += ex.Message;
throw new Exception(msg);
}
finally
{
conn.Close();
}
}
}
Step 3
Fetch Image from Database.
Here I am using Handler.ashx page to retrieve image.
ShowImage.aspx
Design.
{
protected void Page_Load(object sender, EventArgs e)
{
public string GetConnectionString()
{
private void GetImageInfo(string id)
{
}
<div>
<asp:DropDownList ID="DropDownList1" runat="server" AutoPostBack="true" onselectedindexchanged="DropDownList1_SelectedIndexChanged">
</asp:DropDownList><br />
<asp:Label ID="Label1" runat="server" Text="Label"></asp:Label><br />
<asp:Label ID="Label2" runat="server" Text="Label"></asp:Label><br />
</div>
Code.
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Data.SqlClient;
using System.Data;
using System.Data.SqlClient;
using System.Configuration;
public partial class showbinaryimage : System.Web.UI.Page
{
SqlConnection connection;
string s = ConfigurationManager.ConnectionStrings["imageconverter"].ConnectionString.ToString();
private void BindFileNames(){
DataTable dt = new DataTable();
// SqlConnection connection = new SqlConnection(GetConnectionString());
try
{
connection.Open();
string sqlStatement = "SELECT * FROM TblImages";
SqlCommand sqlCmd = new SqlCommand(sqlStatement, connection);
SqlDataAdapter sqlDa = new SqlDataAdapter(sqlCmd);
sqlDa.Fill(dt);
if (dt.Rows.Count > 0)
{
DropDownList1.DataSource = dt;
DropDownList1.DataTextField = "ImageName"; // the items to be displayed in the list items
DropDownList1.DataValueField = "Id"; // the id of the items displayed
DropDownList1.DataBind();
}
}
catch (System.Data.SqlClient.SqlException ex)
{
string msg = "Fetch Error:";
msg += ex.Message;
throw new Exception(msg);
}
finally
{
connection.Close();
}
}protected void Page_Load(object sender, EventArgs e)
{
if (!Page.IsPostBack)
{
BindFileNames();
connection = new SqlConnection(s);
}
}public string GetConnectionString()
{
//sets the connection string from your web config file "ConnString" is the name of your Connection String
return System.Configuration.ConfigurationManager.ConnectionStrings["imageconverter"].ConnectionString;
}private void GetImageInfo(string id)
{
string sql = "SELECT * FROM TblImages WHERE Id = @id";
SqlCommand cmd = new SqlCommand(sql, connection);
cmd.Parameters.AddWithValue("@id", id);
connection.Open();
SqlDataReader reader = cmd.ExecuteReader();
reader.Read();
//Get Image Information
Label1.Text = reader["ImageName"].ToString();
reader.Close();
connection.Close();
}
protected void DropDownList1_SelectedIndexChanged(object sender, EventArgs e)
{
if (DropDownList1.SelectedIndex > 0)
{
//Set the ImageUrl to the path of the handler with the querystring value
Image1.ImageUrl = "Handler.ashx?id=" + DropDownList1.SelectedItem.Value;
//call the method to get the image information and display it in Label Control
GetImageInfo(DropDownList1.SelectedItem.Value);
}
}
Handler.ashx
<%@ WebHandler Language="C#" Class="Handler" %>
using System;
using System.Web;
using System.Data.SqlClient;
using System.Data;
using System.IO;
using System.Collections.Specialized;
using System.Data.SqlClient;
using System.Data;
using System.Configuration;
public class Handler : IHttpHandler {
public string GetConnectionString()
{
//sets the connection string from your web config file "ConnString" is the name of your Connection String
return System.Configuration.ConfigurationManager.ConnectionStrings["imageconverter"].ConnectionString;
}
public void ProcessRequest(HttpContext context)
{
string id = context.Request.QueryString["id"]; //get the querystring value that was pass on the ImageURL (see GridView MarkUp in Page1.aspx)
if (id != null)
{
MemoryStream memoryStream = new MemoryStream();
SqlConnection connection = new SqlConnection(GetConnectionString());
string sql = "SELECT * FROM TblImages WHERE Id = @id";
SqlCommand cmd = new SqlCommand(sql, connection);
cmd.Parameters.AddWithValue("@id", id);
connection.Open();
SqlDataReader reader = cmd.ExecuteReader();
reader.Read();
//Get Image Data
byte[] file = (byte[])reader["Image"];
reader.Close();
connection.Close();
memoryStream.Write(file, 0, file.Length);
context.Response.Buffer = true;
context.Response.BinaryWrite(file);
memoryStream.Dispose();
}
}
public bool IsReusable {
get {
return false;
}
}
}
