Server Side validation not working - ASP.NET

Question

Client side validation works fine. I disabled the client side to see if it also works good server side, but fails. The compiler reaches 'SaveData' even if the input text is invalid. There are no update panels. How should I solve this.

ASPX:

<asp:TextBox ID="txtDept" runat="server" pattern="[a-z A-Z]*"></asp:TextBox>

<asp:RegularExpressionValidator 
    ID="revDept" 
    runat="server" 
    ValidationExpression="^[a-zA-Z\s]{1,50}$" 
    ControlToValidate="txtDept" 
    Display="Dynamic" 
    ErrorMessage="Only alphabets and spaces are allowed." 
    EnableClientScript="false">
</asp:RegularExpressionValidator>

C#:

protected void btnSubmit_Click(object sender, EventArgs e)
    {
        if (Page.IsValid)
        {
          SaveData();
        }        
    }

Also, try removing the pattern from the textbox. You might run into a pattern conflict with both (and they are not equivalent) — Andre Calil
– Andre Calil, Commented Sep 29, 2014 at 6:36
This is for a WAP site & so I need to put that. Any other alternatives — sukesh
– sukesh, Commented Sep 29, 2014 at 6:44
@Sain. Thank you that worked. I remember, it worked for other forms even without explicitly calling validate(). Any reason. Or I just use it by trial?? — sukesh
– sukesh, Commented Sep 29, 2014 at 6:46

Community · Accepted Answer · 2017-05-23 11:49:36Z

1

You need to either have "CausesValidation" enabled on the submit button (we can't check in your code if it is so), or to call explicitly "Page.Validate()" before to test the IsValid property.

Please also take a look at How does Page.IsValid work? , it could be helful.

edited May 23, 2017 at 11:49

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answered Sep 29, 2014 at 7:16

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