运行报错，高手指点迷津
代码如下，当我填TextBox好点Button后，提示错误：未将对象引用设置到对象的实例。
说明: 执行当前 Web 请求期间，出现未处理的异常。请检查堆栈跟踪信息，以了解有关该错误以及代码中导致错误的出处的详细信息。

异常详细信息: System.NullReferenceException: 未将对象引用设置到对象的实例。

源错误: 行 77： SqlConnection myConn = new SqlConnection(System.Configuration.ConfigurationSettings

弄了一天都没弄好，高手指点迷津。辛苦了，谢谢！！！！！！！！！！！


using System;
using System.Collections;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Web;
using System.Web.SessionState;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.HtmlControls;
using System.Data.SqlClient;
using System.Configuration;

namespace 第n次
{
public class WebForm2 : System.Web.UI.Page
{
protected System.Web.UI.WebControls.Label Label1;
protected System.Web.UI.WebControls.Label Label2;
protected System.Web.UI.WebControls.Label Label3;
protected System.Web.UI.WebControls.Label Label4;
protected System.Web.UI.WebControls.RequiredFieldValidator
RequiredFieldValidator2;
protected System.Web.UI.WebControls.Label Label5;
protected System.Web.UI.WebControls.CompareValidator CompareValidator1;
protected System.Web.UI.WebControls.TextBox nameTextBox;
protected System.Web.UI.WebControls.TextBox PasswordTextBox;
protected System.Web.UI.WebControls.TextBox PasswordagainTextBox;
protected System.Web.UI.WebControls.TextBox addressTextBox;
protected System.Web.UI.WebControls.TextBox emailTextBox;
protected System.Web.UI.WebControls.Button Button1;
protected System.Web.UI.WebControls.Panel InputPanel;
protected System.Web.UI.WebControls.Label Label6;
protected System.Web.UI.WebControls.RequiredFieldValidator RequiredFieldValidator1;
private static string strConn = System.Configuration.ConfigurationSettings.AppSettings[ "ConnectionStr "];


private void Page_Load(object sender, System.EventArgs e)
{

}

#region Web 窗体设计器生成的代码
override protected void OnInit(EventArgs e)
{
//
// CODEGEN: 该调用是 ASP.NET Web 窗体设计器所必需的。

//
InitializeComponent();
base.OnInit(e);
}

private void InitializeComponent()
{
this.Button1.Click += new System.EventHandler(this.Button1_Click);
this.Load += new System.EventHandler(this.Page_Load);

}
#endregion

private void Button1_Click(object sender, System.EventArgs e)
{
SaveNewUser();
}
private void SaveNewUser()
{
// 连接字符串和SQL语句
string Sql = "insert into userdata (name,Password,address,email) values " + " (@s_name,@s_Password,@s_address,@s_email) ";
string ConnStr = System.Configuration.ConfigurationSettings.AppSettings[ "ConnectionStr_kang "];

// 创建Connection和Command对象
SqlConnection myConn = new SqlConnection(System.Configuration.ConfigurationSettings.AppSettings[ "ConnectString "].ToString());
SqlCommand myCommand = myConn.CreateCommand();
// 初始化Command对象
myCommand.CommandText = Sql;
myCommand.CommandType = CommandType.Text;
myCommand.Parameters.Add( "@s_name ",SqlDbType.NVarChar, 10);
myCommand.Parameters[ "@s_name "].Value =nameTextBox.Text;
myCommand.Parameters.Add( "@s_Password ", SqlDbType.NVarChar, 10);
myCommand.Parameters[ "@s_Password "].Value = PasswordTextBox.Text;
myCommand.Parameters.Add( "@s_email ", SqlDbType.NVarChar, 50);
myCommand.Parameters[ "@s_email "].Value = emailTextBox.Text;
myCommand.Connection.Open();
if(1 == myCommand.ExecuteNonQuery())
{
// 新增成功，隐藏输入用户信息的面板，显示“输入成功”的面板
Response.Write( "添加成功 ");

}
else
{
Response.Write ( "添加失败 ");

}

}



[解决办法]
你的配置文件贴来。
有ConnectString嘛》？？？
[解决办法]
自己解决了更好
[解决办法]
未将对象引用设置到对象的实例

ConnectString 存在问题
[解决办法]
你的配置文件中没有为ConnectString的Key啊，改一个
[解决办法]
WY
[解决办法]
web.Config

<configuration>
<appSettings>
<add key= "ConnectString " value= "server=.;uid=sa;pwd=你的密码;database=你的数据库 "/>
</appSettings>
<system.web>
....
[解决办法]
</configuration> 没有.

[解决办法]
应该是 ConnectString 的问题
[解决办法]
你最好贴贴你的web.config文件