code for Aspx.cs Page
protected void btnSubmit_Click(object sender, EventArgs e)
{
try
{
//typecasete imageupload control in a varaiable
FileUpload img = (FileUpload)imgUpload;
Byte[] imgByte = null;
if (img.HasFile && img.PostedFile != null)
{
//To create a PostedFile
HttpPostedFile File = imgUpload.PostedFile;
//Create byte Array with file len
imgByte = new Byte[File.ContentLength];
//force the control to load data in array
File.InputStream.Read(imgByte, 0, File.ContentLength);
}
// Insert the employee name and image into db
connection.Open();
string sql = "INSERT INTO image_test(image_name,image_source) VALUES(@image_name, @image_source)";
SqlCommand cmd = new SqlCommand(sql, connection);
cmd.Parameters.AddWithValue("@image_name", imgUpload.PostedFile.FileName.ToString() );
cmd.Parameters.AddWithValue("@image_source", imgByte);
cmd.ExecuteNonQuery();
connection.Close();
}
catch
{ lblResult.Text = "There was an error"; }
}
protected void Button1_Click(object sender, EventArgs e)
{
// For reading image from database and display in a image control in web form.
Image1.ImageUrl = "~/image.ashx?image_name=" + txt_imageshow.Text.Trim();
}
Next step add ashx extension file with following instruction:
click project > Add New Item > Generic Handler > image.ashx
then write the code in the form.
public void ProcessRequest(HttpContext context)
{
{
string image_name = null;
if (context.Request.QueryString["image_name"] != null)
image_name = Convert.ToString(context.Request.QueryString["image_name"]);
else
throw new ArgumentException("No parameter specified");
context.Response.ContentType = "image/jpeg";
Stream strm = ShowEmpImage(image_name);
byte[] buffer = new byte[strm.Length];
int byteSeq = strm.Read(buffer, 0, Convert.ToInt32(strm.Length));
while (byteSeq > 0)
{
context.Response.OutputStream.Write(buffer, 0, byteSeq);
byteSeq = strm.Read(buffer, 0, 4096);
}
// context.Response.ContentType = "text/plain";
// context.Response.Write("Hello World");
}
public Stream ShowEmpImage(string image_name)
{
string sql = "SELECT image_source FROM image_test WHERE image_name = @name";
SqlCommand cmd = new SqlCommand(sql, connection);
cmd.CommandType = CommandType.Text;
cmd.Parameters.AddWithValue("@name", image_name);
connection.Open();
object img = cmd.ExecuteScalar();
try
{
return new MemoryStream((byte[])img);
}
catch
{
return null;
}
finally
{
connection.Close();
}
}
if (context.Request.QueryString["image_name"] != null)
image_name = Convert.ToString(context.Request.QueryString["image_name"]);
else
throw new ArgumentException("No parameter specified");
context.Response.ContentType = "image/jpeg";
Stream strm = ShowEmpImage(image_name);
byte[] buffer = new byte[strm.Length];
int byteSeq = strm.Read(buffer, 0, Convert.ToInt32(strm.Length));
while (byteSeq > 0)
{
context.Response.OutputStream.Write(buffer, 0, byteSeq);
byteSeq = strm.Read(buffer, 0, 4096);
}
// context.Response.ContentType = "text/plain";
// context.Response.Write("Hello World");
}
public Stream ShowEmpImage(string image_name)
{
string sql = "SELECT image_source FROM image_test WHERE image_name = @name";
SqlCommand cmd = new SqlCommand(sql, connection);
cmd.CommandType = CommandType.Text;
cmd.Parameters.AddWithValue("@name", image_name);
connection.Open();
object img = cmd.ExecuteScalar();
try
{
return new MemoryStream((byte[])img);
}
catch
{
return null;
}
finally
{
connection.Close();
}
}
