Update Statement not working

codebehind:

using System;
using System.Data;
using System.Data.SqlClient;
using System.Collections.Generic;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.Configuration;
using System.Web.Security;
using System.Drawing;
using System.Drawing.Drawing2D; 

public partial class profileupdate : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {
        HyperLink hl;

        try
        {
            hl = Master.FindControl("_members") as HyperLink;
            hl.CssClass = "current_page_item";
        }
        catch (Exception)
        {
        }

        string getMemInfoSQL = "Select MEMBER_ID, MEMBER_SNAME, MEMBER_PIC, MEMBER_PHONE FROM MEMBER WHERE MEMBER_ID = @MEMID";

        SqlConnection myConnection = new SqlConnection();
        string connectionString = WebConfigurationManager.ConnectionStrings["DBSFL"].ConnectionString;
        SqlConnection dbconn = new SqlConnection(connectionString);

        SqlCommand cmdread = new SqlCommand(getMemInfoSQL, dbconn);
        SqlDataReader myReader1;

        MembershipUser m = Membership.GetUser();
        string memberuserid = m.ProviderUserKey.ToString();

        cmdread.Parameters.AddWithValue("@MEMID", memberuserid);

        try
        {
            dbconn.Open();

            myReader1 = cmdread.ExecuteReader();
            myReader1.Read();

            if (myReader1.HasRows)
            {
                String memimage = Convert.ToString(myReader1["MEMBER_PIC"]);
                String memsname = Convert.ToString(myReader1["MEMBER_SNAME"]);
                String memphone = Convert.ToString(myReader1["MEMBER_PHONE"]);

                txtSName.Text = memsname;
                txtPhone.Text = memphone;
                if (memimage == "")
                {
                    imgAvatar.Visible = false;
                }
                imgAvatar.ImageUrl = memimage;
            }
            myReader1.Close();
        }
        catch (Exception ex)
        {
            throw new Exception(ex.ToString(), ex);
        }
        finally
        {
            dbconn.Close();
        }
    }

    protected void btnUpdate_Click(object sender, EventArgs e)
    {
        MembershipUser m = Membership.GetUser();

        string memuserid = m.ProviderUserKey.ToString();
        string membersitename = txtSName.Text;
        string memberphone = txtPhone.Text;
        string mempicloc = sqltest.Text;
        string updateSQL = "";

        updateSQL = "Update MEMBER set MEMBER_SNAME = @MEMSNAME, MEMBER_PHONE = @MEMPHONE, MEMBER_PIC = @MEMPIC WHERE MEMBER_ID = @MEMID";

        string connectionString = WebConfigurationManager.ConnectionStrings["DBSFL"].ConnectionString;
        SqlConnection dbconn = new SqlConnection(connectionString);
        SqlCommand cmdUpdate = new SqlCommand(updateSQL, dbconn);

        cmdUpdate.Parameters.AddWithValue("@MEMID", memuserid);
        cmdUpdate.Parameters.AddWithValue("@MEMSNAME", membersitename);
        cmdUpdate.Parameters.AddWithValue("@MEMPHONE", memberphone);
        cmdUpdate.Parameters.AddWithValue("@MEMPIC", mempicloc);

        try
        {
            dbconn.Open();
            cmdUpdate.ExecuteNonQuery();
        }
        catch (Exception ex)
        {
            throw new Exception(ex.ToString(), ex);
        }
        finally
        {
            dbconn.Close();
        }

        Response.Redirect("members.aspx");

    }

    protected void profilePicUpload_UploadComplete(object sender, AjaxControlToolkit.AsyncFileUploadEventArgs e)
    {
        if (profilePicUpload.HasFile)
        {
            profilePicUpload.SaveAs(Server.MapPath("~/MemImages/" + System.IO.Path.GetFileName(e.filename)));
            sqltest.Text = "~/MemImageThumbs/" + System.IO.Path.GetFileName(e.filename);
            string destimg = "~/MemImages/" + System.IO.Path.GetFileName(e.filename);
            resizeimage(100, 100, "MemImageThumbs", destimg, System.IO.Path.GetFileName(e.filename));
            UpdatePanel1.Update();
        }
    }

    public void resizeimage(int tw, int th, string destfold, string srcimg, string fname)
    {
        int thumbWidth = tw;  //Max width allowed
        int thumbHeight = th; //Max height allowed
        decimal twidth = Convert.ToDecimal(thumbWidth);
        decimal theight = Convert.ToDecimal(thumbHeight);
        decimal heightdiff;
        decimal widthdiff;

        string src;
        string imgname = Convert.ToString(fname);
        src = srcimg;

        String dest = Server.MapPath("~/" + destfold + "/" + imgname); //absolute location of the new image created(thumbnail) 
        System.Drawing.Image image = System.Drawing.Image.FromFile(Server.MapPath(src));

        //- Create a System.Drawing.Bitmap with the desired width and height of the thumbnail.
        int srcWidth = image.Width;
        int srcHeight = image.Height;

        if (srcWidth > thumbWidth)  //example sw = 800  tw = 640  
        {
            widthdiff = srcWidth / twidth;  // wd = 1.25
            if (srcHeight > thumbHeight)  //example sh = 500 th = 420
            {
                heightdiff = srcHeight / theight;  //hd = 1.19
                if (widthdiff > heightdiff)  // 1.25 > 1.19
                {
                    theight = srcHeight / widthdiff;  // 800 div 1.25  = 640
                    twidth = srcWidth / widthdiff;   //500 div 1.28
                    thumbHeight = Convert.ToInt32(theight);  // 800 div 1.25  = 640
                    thumbWidth = Convert.ToInt32(twidth);    // 500 div 1.25  = 400
                }
                else  // say hd was 1.28
                {
                    theight = srcHeight / heightdiff; //800 div 1.28
                    twidth = srcWidth / heightdiff;   //500 div 1.28
                    thumbHeight = Convert.ToInt32(theight);  // 800 div 1.25  = 640
                    thumbWidth = Convert.ToInt32(twidth);    // 500 div 1.25  = 400
                }
            }
            else  // ex sw = 800 sh = 400
            {
                theight = srcHeight / widthdiff;  // 800 div 1.25  = 640
                twidth = srcWidth / widthdiff;   //500 div 1.28
                thumbHeight = Convert.ToInt32(theight);  // 800 div 1.25  = 640
                thumbWidth = Convert.ToInt32(twidth);    // 500 div 1.25  = 400
            }
        }
        else  //example sw = 600
        {
            if (srcHeight > thumbHeight)  // sh = 450
            {
                heightdiff = srcHeight / theight;  // wd = 1.07
                theight = srcHeight / heightdiff; //800 div 1.28
                twidth = srcWidth / heightdiff;   //500 div 1.28
                thumbHeight = Convert.ToInt32(theight);  // 800 div 1.25  = 640
                thumbWidth = Convert.ToInt32(twidth);    // 500 div 1.25  = 400
            }
            else
            {
                thumbHeight = srcHeight;
                thumbWidth = srcWidth;
            }
        }

        Bitmap bmp = new Bitmap(thumbWidth, thumbHeight);

        //- Create a System.Drawing.Graphics object from the Bitmap which we will use to draw the high quality scaled image
        System.Drawing.Graphics gr = System.Drawing.Graphics.FromImage(bmp);

        //- Set the System.Drawing.Graphics object property SmoothingMode to HighQuality
        gr.SmoothingMode = System.Drawing.Drawing2D.SmoothingMode.HighQuality;

        //- Set the System.Drawing.Graphics object property CompositingQuality to HighQuality
        gr.CompositingQuality = System.Drawing.Drawing2D.CompositingQuality.HighQuality;

        //- Set the System.Drawing.Graphics object property InterpolationMode to High
        gr.InterpolationMode = System.Drawing.Drawing2D.InterpolationMode.High;

        //- Draw the original image into the target Graphics object scaling to the desired width and height
        System.Drawing.Rectangle rectDestination = new System.Drawing.Rectangle(0, 0, thumbWidth, thumbHeight);
        gr.DrawImage(image, rectDestination, 0, 0, srcWidth, srcHeight, GraphicsUnit.Pixel);

        //- Save to destination file
        bmp.Save(dest);

        //- dispose / release resources
        bmp.Dispose();
        image.Dispose();
    }
}


main page:

<%@ Page Title="" Language="C#" MasterPageFile="~/SFL.master" AutoEventWireup="true" CodeFile="profileupdate.aspx.cs" Inherits="profileupdate" %>

<asp:Content ID="Content1" ContentPlaceHolderID="head" Runat="Server">
SFL 2010 Profile Update
</asp:Content>
<asp:Content ID="Content2" ContentPlaceHolderID="ContentPlaceHolder1" Runat="Server">
    <asp:Label ID="lblError" runat="server" />
    <ajaxToolkit:ToolkitScriptManager ID="ToolkitScriptManager1" runat="server">
    </ajaxToolkit:ToolkitScriptManager>
    <div id="page">
	<div id="page-bgtop">
		<div id="page-bgbtm">
			<div id="content">
				<div class="post">
					<div class="post-bgtop">
						<div class="post-bgbtm">
							<h2 class="title"><a href="#">Profile Update</a></h2>
							    <br /><asp:Label ID="sqltest" runat="server" Text=""></asp:Label><br /><br />
								
								<label for="curavatar" class="contactlabel">Current Avatar</label>
                                <asp:Image ID="imgAvatar" runat="server" /><br />
								<label for="txtSName" class="contactlabel">Site Name</label>
                                <asp:TextBox ID="txtSName" runat="server"></asp:TextBox><br />
                                <label for="txtPhone" class="contactlabel">Phone Number:</label>
                                <ajaxToolkit:MaskedEditExtender ID="MaskedEditExtender1" runat="server" Mask="999\-999\-9999" MaskType="Number" Enabled="True" TargetControlID="txtPhone">
                                </ajaxToolkit:MaskedEditExtender>
                                <asp:TextBox ID="txtPhone" runat="server"></asp:TextBox><br />
                                <label for="profilePicUpload" class="contactlabel">Avatar:</label>
                                <asp:UpdatePanel ID="UpdatePanel1" runat="server" UpdateMode="Conditional">
                                <ContentTemplate>
                                    <ajaxToolkit:AsyncFileUpload ID="profilePicUpload" runat="server" OnUploadedComplete="profilePicUpload_UploadComplete" />
                                    </ContentTemplate></asp:UpdatePanel><br />	
                                    <label for="btnUpdate" class="contactlabel">&nbsp;</label>							
                                    <asp:Button ID="btnUpdate" runat="server" Text="Update Profile" OnClick="btnUpdate_Click" />
						</div>
					</div>
				</div>
		    </div>
			<!-- end #content -->
			<div id="sidebar">
				<ul>
					<li>
						<h2>My Tools</h2>
						<ul>
                            <li><a href="profileupdate.aspx"><img src="images/editprofile.jpg" />&nbsp;&nbsp;Edit Profile</a></li>
                            <li><a href="talkshit.aspx"><img src="images/talkshit.jpg" />&nbsp;&nbsp;Talk Shit</a></li>
                            <li><a href="traderequest.aspx"><img src="images/trade.jpg" />&nbsp;&nbsp;Request Trade</a></li>
                            <li><a href="placesidebet.aspx"><img src="images/sidebet.jpg" />&nbsp;&nbsp;Place Sidebet</a></li>
                            <li><a href="updatelineup.aspx"><img src="images/lineup.jpg" />&nbsp;&nbsp;Update My Lineup</a></li>
						</ul>
					</li>
					<li>
						<h2>Quick Tools</h2>
						<ul>
                            <li><a href="players.aspx"><img src="images/players.jpg" />&nbsp;&nbsp;View Players</a></li>
						</ul>
					</li>
				</ul>
			</div>
			<!-- end #sidebar -->
			</div>
	</div>
</div>
</asp:Content>

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