各位大侠，请请帮一下忙下面几段代码有错误没有，小弟在这先鞠躬了！

2 各位大侠，请请帮一下忙下面几段代码有错误没有，小弟在这先鞠躬了！
using System;
using System.Data;
using System.Configuration;
using System.Collections;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
using System.Data.SqlClient;

public partial class backmanage_updategoods1 : System.Web.UI.Page
{
protected SqlConnection strcon = new SqlConnection(System.Configuration.ConfigurationManager.AppSettings[ "conn "]);
protected DataSet ds = new DataSet();
protected void Page_Load(object sender, EventArgs e)
{
if (Session[ "admin "] == null)
{
Server.Transfer( "backlogin.aspx ");
}
strcon.Open();


bind1();
strcon.Close();


}


protected void bind1()
{
SqlDataAdapter sda = new SqlDataAdapter( "select goodsname,price,memberprice,picture,introduce,latenew,youhuiprice from tb_goods where id= " + Request.QueryString[ "id "], strcon);

DataSet ds = new DataSet();
sda.Fill(ds, "tb_goods ");

DataRow[] rows = ds.Tables[0].Select();
foreach (DataRow row in rows)
{



txtgoodsname.Text = row[ "goodsname "].ToString();


txtgoodsprice.Text = row[ "price "].ToString();
txtmemberprice.Text = row[ "memberprice "].ToString();

txtgoodsintroduce.Text = row[ "introduce "].ToString();

txtyouhuiprice.Text = row[ "youhuiprice "].ToString();
txtpicture.Text = row[ "picture "].ToString();
int latenew = Convert.ToInt32(row[ "latenew "]);
if (latenew == 1)
{
RadioButtonList1.SelectedIndex = 0;
}
else if (latenew == 2)
{
RadioButtonList1.SelectedIndex = 1;
}
else if (latenew == 3)
{
RadioButtonList1.SelectedIndex = 2;
}
}



}


protected void Button3_Click(object sender, EventArgs e)
{
string filePath = " ", fileExtName = " ", mFileName, mPath;
System.Text.StringBuilder strMsg = new System.Text.StringBuilder( "上传文件信息; <hr color=red> ");
if ( " " != fileup.PostedFile.FileName)
{
filePath = fileup.PostedFile.FileName;
fileExtName = filePath.Substring(filePath.LastIndexOf( ". ") + 1);
try
{

mPath = Server.MapPath( "../goodsimages/ ");
mFileName = filePath.Substring(filePath.LastIndexOf( "\\ ") + 1);
fileup.PostedFile.SaveAs(mPath + mFileName);
Label11.Text = "上传成功! ";
}
catch (Exception err)
{
Response.Write(err.ToString());
Label11.Text = "上传失败! ";
}
}
}
protected void Button2_Click(object sender, EventArgs e)
{

}



protected void Button1_Click(object sender, EventArgs e)
{

int mes = Convert.ToInt32(Request .QueryString [ "id "]);


string goodsname = txtgoodsname.Text.ToString();
string introduce = txtgoodsintroduce.Text.ToString();
double price = Convert.ToDouble(txtgoodsprice.Text);
double memberprice = Convert.ToDouble(txtmemberprice.Text);
string picture = "~/goodsimages/ " + txtpicture.Text.ToString();




int latenew;
if (RadioButtonList1.SelectedIndex == 0)
{
latenew = 1;
}
else if (RadioButtonList1.SelectedIndex == 1)

{
latenew = 2;
}
else if (RadioButtonList1.SelectedIndex == 2)
{
latenew = 3;
}
else
{
latenew = 0;
}
strcon.Open();
string str = "update tb_goods set goodsname= ' " + goodsname + " ',introduce= ' " + introduce + " ',price= ' " + price + " ',memberprice= ' " + memberprice + " ',picture= ' " + picture + " ',youhuiprice= ' "+txtyouhuiprice .Text + " ',latenew= ' "+latenew + " ' where id= " + mes;
SqlCommand comm = new SqlCommand(str, strcon);
try
{
comm.ExecuteNonQuery();
Label10.Text = " 更新成功! ";
}
catch
{
Label10.Text = "更新失败! ";
}
finally
{
strcon.Close();
}
}


protected void Button3_Click1(object sender, EventArgs e)
{
string filePath = " ", fileExtName = " ", mFileName, mPath;
System.Text.StringBuilder strMsg = new System.Text.StringBuilder( "上传文件信息; <hr color=red> ");
if ( " " != fileup.PostedFile.FileName)

{
filePath = fileup.PostedFile.FileName;
fileExtName = filePath.Substring(filePath.LastIndexOf( ". ") + 1);
try
{
mPath = Server.MapPath( "../goodsimages/ ");
mFileName = filePath.Substring(filePath.LastIndexOf( "\\ ") + 1);
fileup.PostedFile.SaveAs(mPath + mFileName);
Label11.Text = "上传成功! ";
}
catch (Exception err)
{
Response.Write(err.ToString());
Label11.Text = "上传失败! ";
}
}
}
}


[解决办法]
先打印一下看SQL语句错误没
如果没有的话。在打个断点一步一步找~~