Validation Summary problem in asp.net

See more:

ASP.NET

validation

I have a login page on which i have applied validation on text fields, the problem is when user open login page and suddenly switch to another page, without entering anything in the fields. validation summary pops up and says field cannot be null....


Here is my code...

<asp:TextBox ID="TxtBxEmail" runat="server" CssClass="TextBoxClass" Width="60%" TextMode="SingleLine" ToolTip="Enter Your Email Address"  AutoCompleteType="Disabled" placeholder="E.g. username@domain.com"></asp:TextBox>

<asp:RequiredFieldValidator ID="rvemail" runat="server" Display="None" ErrorMessage="Please Enter Email" Text="*" ControlToValidate="TxtBxEmail" Font-Names="Calibri" Font-Size="small" ForeColor="Red" ></asp:RequiredFieldValidator>
    <asp:RegularExpressionValidator ID="revemail" runat="server" Display="None" ControlToValidate="TxtBxEmail"  ValidationExpression="^([0-9a-zA-Z]([-.\w]*[0-9a-zA-Z])*@([0-9a-zA-Z][-\w]*[0-9a-zA-Z]\.)+[a-zA-Z]{2,9})$" ErrorMessage="invalid email format" Text="*" Font-Names="Calibri" Font-Size="12px" ForeColor="Red"></asp:RegularExpressionValidator>


<asp:TextBox ID="TxtBxPassword" runat="server" CssClass="TextBoxClass" Width="60%" TextMode="Password" ToolTip="Enter Your Password"  AutoCompleteType="Disabled" ></asp:TextBox>

<asp:RequiredFieldValidator ID="rvPassword" runat="server" Display="None" ControlToValidate="TxtBxPassword" ErrorMessage="Please Enter Password" Text="*" Font-Names="Calibri" Font-Size="small" ForeColor="Red" ></asp:RequiredFieldValidator>

<asp:RegularExpressionValidator ID="revPassword" runat="server" Display="None"  ControlToValidate="TxtBxPassword" ValidationExpression="(?=^.{5,15}$)(?=.*\d)(?=.*[a-z])(?=.*[A-Z])(?=.*[!@#$%^&*()_+}{:;'?/>.<,])(?!.*\s).*$" ErrorMessage="Password must be 5-15 characters long with at least one numeric,</br>one upper case character and one special character." Text="*" Font-Names="Calibri" ForeColor="Red" Font-Size="12px"></asp:RegularExpressionValidator> 


<asp:Button ID="BtnLogin" runat="server" Text="Login" CssClass="BtnClass"  Height="40px" Width="100px" OnClick="BtnLogin_Click"   /> 

<asp:ValidationSummary ID="vs" runat="server" Font-Names="Calibri" ForeColor="Red" Font-Size="Small" HeaderText="Warnings........" />

and the code behind:

public partial class Login_Login : System.Web.UI.Page
{
   

    protected void Page_Load(object sender, EventArgs e)
    {

    }

    protected void BtnLogin_Click(object sender, EventArgs e)
    {
        if (Page.IsValid)
        {
            try {
                // rest of my code....
            }
            catch (Exception ex) {
               
            }
            finally {
}
            }//end if

        
        else
        {

            //Page Validation Does not Occurs Successfully.
        }
    }

  

   
}