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) 
                {