CODEWITHSUNDEEP
c#asp.netvalidation
Byyo
Byyo

Reputation: 2243

How to force serverside validation instead of only clientside?

I have a Webforms aplication and don't want the user to enter invalid values.

Currently i'm solving this with validator-controls like this:

<asp:TextBox runat="server" ID="tbInsert"></asp:TextBox>
<asp:RequiredFieldValidator runat="server" ControlToValidate="tbInsert"  ID="rqtbInsert"
     ErrorMessage="Required"> 
</asp:RequiredFieldValidator>

But this validates the value just client-side (which can be avoided by the user)

Do i have to add server-side validation for each controll? What's the way it should be done?

if (!string.IsNullOrEmpty(tbInsert.Text))
{
   //do sth.
}

Upvotes: 1

Views: 522

Answers (3)

Tim Schmelter
Tim Schmelter

Reputation: 460108

A validator does not only check on clientside. All controls which have CausesValidation=true will trigger Page.Validate() on serverside which will cause all related(if ValidationGroups are specified, otherwise all) validators to validate.

So the clientside check is optional and can be enabled/disabled via EnableClientScript whereas the serverside check always takes place and can also be triggered programmatically with the Page.Validate-method.

Upvotes: 5

mayur rathi
mayur rathi

Reputation: 325

Instead of adding the validation for each and every control. add the static validation helper class and write all the validation methods for models to the same class. just all each methods for validation from the receiving method at server end.

this way you will have dependancy saperation and achieve the desired behavour without overpopulating the method(just give a single call at the method entry)

Upvotes: 0

Hassan Mokdad
Hassan Mokdad

Reputation: 5902

At the server side, use the Page.IsValid property to check if all the validation controls passed, which returns a value indicating whether page validation succeeded. from MSDN Page.IsValid:

 private void ValidateBtn_Click(Object Sender, EventArgs E)
{
    Page.Validate();
    if (Page.IsValid == true)
        lblOutput.Text = "Page is Valid!";
    else
        lblOutput.Text = "Some required fields are empty.";
}

Upvotes: 1

Related Questions