store the image data in another table in sql server 2005

i added following code:
<pre>public Stream SaveToMyDB()
{
SqlConnection connection = new SqlConnection(ConfigurationManager.ConnectionStrings["conStr"].ConnectionString);

try{
connection.Open();

string strCmd = String.Format("SELECT ImageFile FROM MyImageTable WHERE ImgID ='"+ImgIDTextBox.Text+"'");
SqlCommand cmd = new SqlCommand(strCmd, connection);



byte[] b = (byte[])cmd.ExecuteScalar();
if(b.Length > 0)
{
// Open a stream for the image and write the bytes into it

System.IO.MemoryStream stream = new System.IO.MemoryStream(b, true);
stream.Write(b, 0, b.Length);

// Create a bitmap from the stream

Bitmap bmp = new Bitmap(stream);

// Check for scaling and assign the bitmap to the Picturebox
return stream;
stream.Close();


}


}</pre>

but it is giving error like:: not all code paths return a value .

thank u very much.. it was 3 line code...But since i have used function and returned it it was giving problem,that was the problem. now i removed function. it is working fine now.thanks.