getting the type of image. jpg, gif

I don't know how to populate this:
command.Parameters.Add(new System.Data.SqlClient.SqlParameter("img_type", "??????");

protected void btnUploadImage_Click(object sender, EventArgs e)
{
RbmBinaryImage1.ImageContent = FileUpload1.FileBytes;
string connection = ConfigurationManager.ConnectionStrings["LocalSqlServer"].ConnectionString;
System.Data.SqlClient.SqlConnection con = new System.Data.SqlClient.SqlConnection(connection);
System.Data.SqlClient.SqlCommand command = new System.Data.SqlClient.SqlCommand("InsertNewImageTest");
command.CommandType = CommandType.StoredProcedure;
command.Connection = con;
command.Parameters.Add(new System.Data.SqlClient.SqlParameter("img_title", FileUpload1.FileName));
command.Parameters.Add(new System.Data.SqlClient.SqlParameter("img_stream", FileUpload1.FileBytes));
command.Parameters.Add(new System.Data.SqlClient.SqlParameter("img_type", "??????");
command.Parameters.Add(new System.Data.SqlClient.SqlParameter("UserID", strUsrId));

con.Open();
command.ExecuteNonQuery();

}

Instant Access to this Solution

Plus...

30 Day FREE access, no risk, no obligation

Collaborate with the world's top tech experts

Unlimited access to our exclusive solution database

Never be left without tech help again

Trusted by hundreds of thousands everyday for fast, accurate and reliable tech support.

"The time we save is the biggest benefit of Experts Exchange to Warner Bros. What could take multiple guys 2 hours or more each to find is accessed in around 15 minutes on Experts Exchange." Mike Kapnisakis, Warner Bros.

"Our team likes having a resource that is more secure than just using Google and most experts using this service really know their stuff. It's nice to look here first versus using Google." Dayna Sellner, Lockheed Martin

"Anytime that I've been stumped with a problem, 9 out of 10 times Experts Exchange has either the accepted solution or an open discussion of the potential solution to the problem." Kenny Red, eBay Inc.

See what Experts Exchange can do for you.

Got a question?

We've got the answer.

Experts Exchange has been collecting answers to technology questions since 1996…3 million and counting! If you have a question, chances are we already have your answer.

Screenshot of Experts Exchange Knowledgebase

Need individual assistance?

Our experts are ready to help.

If you can't find the exact answer you're looking for, ask our exclusive community of 50,000 experts. You’ll get a personalized answer from a trusted professional.

Want to learn from the best?

Read articles from industry experts.

Thousands of free tech tips, tricks, how-to’s and tutorials are available in our peer reviewed articles section. See for yourself how smart our experts are, no login required.

Working on a long term project?

Store your work and research.

Save solutions to your questions, answers you’ve discovered through searching plus helpful articles in your personal knowledgebase for easy future access.

Join the Community

Give a Little. Get a Lot.

Join the community of experts here and help other tech pros by answering question in your area of expertise. You can earn FREE access to all Experts Exchange's premium features and resources.

use system.io.fileinfo class for extension..

here is an example

Imports System
Imports System.IO 
Public Class Test 
    Public Shared Sub Main()
        Dim path1 As String = Path.GetTempFileName()
        Dim path2 As String = Path.GetTempFileName()
        Dim fi As FileInfo = New FileInfo(path1) 
        If fi.Exists = False Then
            'Create a file to write to.
            Dim sw As StreamWriter = fi.CreateText() 
            sw.WriteLine("Hello")
            sw.WriteLine("And")
            sw.WriteLine("Welcome")
            sw.Flush()
            sw.Close()
        End If 
        Try
            'Open the file to read from.
            Dim sr As StreamReader = fi.OpenText() 
            Do While sr.Peek() >= 0
                Console.WriteLine(sr.ReadLine())
            Loop
            sr.Close()
            Dim fi2 As FileInfo = New FileInfo(path2) 
            'Ensure that the target does not exist.
            fi2.Delete() 
            'Copy the file.
            fi.CopyTo(path2)
            Console.WriteLine("{0} was copied to {1}.", path1, path2) 
            'Delete the newly created file.
            fi2.Delete()
            Console.WriteLine("{0} was successfully deleted.", path2) 
        Catch e As Exception
            Console.WriteLine("The process failed: {0}.", e.ToString())
        End Try
    End Sub
End Class

1:
2:
3:
4:
5:
6:
7:
8:
9:
10:
11:
12:
13:
14:
15:
16:
17:
18:
19:
20:
21:
22:
23:
24:
25:
26:
27:
28:
29:
30:
31:
32:
33:
34:
35:
36:
37:
38:
39:
40:
41:
42:
43:
44:
45:
46:
47:

Select all Open in new window

Question

getting the type of image. jpg, gif

Subscribe now for full access to Experts Exchange and get

Instant Access to this Solution

Programming for ASP.NET

Trusted by hundreds of thousands everyday for fast, accurate and reliable tech support.

See what Experts Exchange can do for you.

Got a question?

We've got the answer.

Need individual assistance?

Our experts are ready to help.

Want to learn from the best?

Read articles from industry experts.

Working on a long term project?

Store your work and research.

What Makes Experts Exchange Unique?

Trusted by the world's most respected brands.

Faithfully serving IT professionals since 1996.

Related Solutions

Free Tech Articles

Cloud Class Webinars

Join the Community

Give a Little. Get a Lot.

Answers

3 Ways to Join

The Experts

The Experts

Testimonials

Testimonials

Testimonials

Business Clients

Business Clients

In the Press

In the Press

In the Press