nullreferenceexception was unhandled - c#
<p>I have downloaded this <a href="http://www.codeproject.com/Articles/21143/PictureBox-Array-in-Visual-Studio-NET" rel="nofollow">PictureBox ImageArray</a><br>
then I've added a button which will add all it's image to sql server 2005  </p>

<p>this is the code:  </p>

<pre><code>private System.Windows.Forms.PictureBox[] imgArray2;
string c_string = "server=.\\sqlexpress;database=Blue;trusted_connection=true";


for (int i = 0; i &lt; NumOfFiles; i++)
{
    imgArray2[i].Image = Image.FromFile(imgName[i]);
    string name = imgName[i].Substring(imgName[i].LastIndexOf(@"\") + 1, imgName[i].Length - imgName[i].LastIndexOf(@"\") - 1);
    MemoryStream mstr = new MemoryStream();
    imgArray2[i].Image.Save(mstr, imgArray2[i].Image.RawFormat);
    byte[] arrImage = mstr.GetBuffer();
    string cmd = "insert into Images (ImagePart" + i + "Name, ImagePart" + i + ") values (@PName, @Pic)";

    SqlConnection c = new SqlConnection(c_string);
    SqlCommand comm = new SqlCommand(cmd, c);
    comm.Parameters.Add(new SqlParameter("@PName", SqlDbType.VarChar, 40)).Value = name;
    comm.Parameters.Add(new SqlParameter("@Pic", SqlDbType.Image)).Value = arrImage;

    try
    {
        c.Open();
        comm.ExecuteNonQuery();
    }
    catch (System.Data.SqlClient.SqlException err)
    {
        MessageBox.Show(err.Message);
    }
    finally
    {
        c.Close();
    }

}
</code></pre>

<p>I've added an <code>imgArray2[]</code> so the image from <code>imgArray[]</code> won't changes and even though I'm using <code>imgArray[]</code> it still throwing the Null error.</p>

<p>The error info highlights the <code>imgArray2[i].Image = Image.FromFile(imgName[i]);</code><br>
it shows nullreferenceexception was unhandled - Object reference not set to an instance of an object.</p>
