Multiple Images upload with different titles

My Requirement is. I will be uploading 3-4 images at a time through FileUpload. Each Image will have its own Title, Descriptions etc.

Now my issue is that, whenever uploading I have given a title column for the images. But when I upload 3-4 Images the title and description is going same for all the images.

Here Is my HTML for the Image Uploading via FileUpload.

 <tr>
    <td style="vertical-align: top;">
        <asp:label cssclass="control-label" id="Label1" runat="server">Image Title</asp:label>
    </td>
    <td>
        <div class="control-group">
            <div class="controls">
                <asp:textbox id="txtImagetitle" cssclass="form-control" runat="server" validationgroup="AddNew"></asp:textbox>
                <asp:requiredfieldvalidator cssclass="error-class" id="RequiredFieldValidator1" runat="server"
                    controltovalidate="txtImagetitle" errormessage="Please add the image title" validationgroup="AddNew"></asp:requiredfieldvalidator>
            </div>
        </div>
    </td>
</tr>
<tr>
    <td style="vertical-align: top;">
        <asp:label cssclass="control-label" id="Label2" runat="server">Image description</asp:label>
    </td>
    <td>
        <div class="control-group">
            <div class="controls">
                <asp:textbox id="txtImagedesc" cssclass="form-control" runat="server" validationgroup="AddNew"></asp:textbox>
                <asp:requiredfieldvalidator cssclass="error-class" id="RequiredFieldValidator2" runat="server"
                    controltovalidate="txtImagedesc" errormessage="Please add the image description"
                    validationgroup="AddNew"></asp:requiredfieldvalidator>
            </div>
        </div>
    </td>
</tr>
<tr>
    <td style="vertical-align: top;">
        <asp:label cssclass="control-label" id="Label3" runat="server">Image upload</asp:label>
    </td>
    <td>
        <div class="control-group">
            <div class="controls">
                <asp:fileupload id="FileUpload1" runat="server" allowmultiple="true" />
                <asp:requiredfieldvalidator cssclass="error-class" id="RequiredFieldValidator3" runat="server"
                    controltovalidate="FileUpload1" errormessage="Please add the gallery date" validationgroup="AddNew"></asp:requiredfieldvalidator>
            </div>
        </div>
    </td>
</tr>

Please suggest what to do in this case when uploading multiple images how to set different titles for different Images.

UPDATED CODE BEHIND

protected void btnSubmit_Click(object sender, EventArgs e)
{
    if (Request.QueryString.Count > 0)
    {
        foreach (var file in FileUpload1.PostedFiles)
        {
            string filename = Path.GetFileName(file.FileName);

            file.SaveAs(Server.MapPath("/GalleryImages/" + filename));

            using (SqlConnection conn = new SqlConnection(conString))

                if (Request.QueryString["Id"] != null)
                {
                    string Id = Request.QueryString["Id"];

                    SqlCommand cmd = new SqlCommand();
                    cmd.CommandText = " Update tbl_galleries_stack SET gallery_id=@gallery_id,img_title=@img_title,img_desc=@img_desc,img_path=@img_path, IsDefault=@IsDefault Where Id=@Id";
                    cmd.Parameters.AddWithValue("@Id", Id);
                    cmd.Parameters.AddWithValue("@gallery_id", ddlgallery.SelectedValue);
                    cmd.Parameters.AddWithValue("@img_title", txtImagetitle.Text);
                    cmd.Parameters.AddWithValue("@img_desc", txtImagedesc.Text);
                    cmd.Parameters.AddWithValue("@img_path", filename);
                    cmd.Parameters.AddWithValue("@IsDefault", chkDefault.Checked);
                    cmd.Connection = conn;
                    conn.Open();
                    cmd.ExecuteNonQuery();
                    conn.Close();
                    ScriptManager.RegisterStartupScript(this, this.GetType(), "alert", "alert('Gallery updated sucessfully');window.location ='csrgalleriesstack.aspx';", true);
                }
        }
    }
    else
    {
        foreach (var file in FileUpload1.PostedFiles)
        {
            string filename = Path.GetFileName(file.FileName);

            file.SaveAs(Server.MapPath("/GalleryImages/" + filename));
            SqlConnection conn = new SqlConnection(System.Configuration.ConfigurationManager.ConnectionStrings["DefaultCSRConnection"].ConnectionString);
            using (SqlCommand cmd = conn.CreateCommand())
            {
                conn.Open();
                SqlCommand cmd1 = new SqlCommand("Insert into tbl_galleries_stack (gallery_id,img_title,img_desc,img_path,IsDefault) values(@gallery_id,@img_title, @img_desc, @img_path,@IsDefault)", conn);
                cmd1.Parameters.Add("@gallery_id", SqlDbType.Int).Value = ddlgallery.SelectedValue;
                cmd1.Parameters.Add("@img_title", SqlDbType.NVarChar).Value = txtImagetitle.Text;
                cmd1.Parameters.Add("@img_desc", SqlDbType.NVarChar).Value = txtImagedesc.Text;
                cmd1.Parameters.Add("@img_path", SqlDbType.NVarChar).Value = filename;
                cmd1.Parameters.Add("@IsDefault", SqlDbType.Bit).Value = chkDefault.Checked;
                cmd1.ExecuteNonQuery();
                conn.Close();
                ScriptManager.RegisterStartupScript(this, this.GetType(), "alert", "alert('Gallery added sucessfully');window.location ='csrgalleriesstack.aspx';", true);
            }
        }
    }
}