验证控件的使用七（ValidationSummary）

  

    1 
   <
   p
   >
   First name 

    2 
    
   <
   asp:TextBox ID
   =
   "
   TextBox1
   "
    Runat
   =
   "
   server
   "
   ></
   asp:TextBox
   >
   

    3 
    
   &
   nbsp;

    4 
    
   <
   asp:RequiredFieldValidator ID
   =
   "
   RequiredFieldValidator1
   "
    

    5 
    Runat
   =
   "
   server
   "
    ErrorMessage
   =
   "
   You must enter your first name
   "
    

    6 
    ControlToValidate
   =
   "
   TextBox1
   "
   ></
   asp:RequiredFieldValidator
   >
   

    7 
    
   </
   p
   >
   

    8 
    
   <
   p
   >
   Last name 

    9 
    
   <
   asp:TextBox ID
   =
   "
   TextBox2
   "
    Runat
   =
   "
   server
   "
   ></
   asp:TextBox
   >
   

   10 
    
   &
   nbsp;

   11 
    
   <
   asp:RequiredFieldValidator ID
   =
   "
   RequiredFieldValidator2
   "
    

   12 
    Runat
   =
   "
   server
   "
    ErrorMessage
   =
   "
   You must enter your last name
   "
    

   13 
    ControlToValidate
   =
   "
   TextBox2
   "
   ></
   asp:RequiredFieldValidator
   >
   

   14 
   
   </
   p
   >
   

   15 
   
   <
   p
   >
   

   16 
    
   <
   asp:Button ID
   =
   "
   Button1
   "
    OnClick
   =
   "
   Button1_Click
   "
    Runat
   =
   "
   server
   "
    

   17 
    Text
   =
   "
   Submit
   "
   ></
   asp:Button
   >
   

   18 
   
   </
   p
   >
   

   19 
   
   <
   p
   >
   

   20 
    
   <
   asp:ValidationSummary ID
   =
   "
   ValidationSummary1
   "
    Runat
   =
   "
   server
   "
    

   21 
    HeaderText
   =
   "
   You received the following errors:
   "
   >
   

   22 
    
   </
   asp:ValidationSummary
   >
   

   23 
   
   </
   p
   >
   

   24 
   
   <
   p
   >
   

   25 
    
   <
   asp:Label ID
   =
   "
   Label1
   "
    Runat
   =
   "
   server
   "
   ></
   asp:Label
   >
   

   26 
   
   </
   p
   >
  

  

   1 
   <
   asp:RequiredFieldValidator ID
   =
   "
   RequiredFieldValidator1
   "
    

   2 
    Runat
   =
   "
   server
   "
    ErrorMessage
   =
   "
   You must enter your first name
   "
    Text
   =
   "
   *
   "
   

   3 
    ControlToValidate
   =
   "
   TextBox1
   "
   ></
   asp:RequiredFieldValidator
   >
   

   4 
    

   5 
   or

   6 
   

   7 
   
   <
   asp:RequiredFieldValidator ID
   =
   "
   RequiredFieldValidator1
   "
    

   8 
    Runat
   =
   "
   server
   "
    ErrorMessage
   =
   "
   You must enter your first name
   "
   

   9 
    ControlToValidate
   =
   "
   TextBox1
   "
   >*</
   asp:RequiredFieldValidator
   >
  

这样就不会有重复显示