Skip to main content

A Quick Fix for the Validator SetFocusOnError Bug

The ASP.NET validators have this nice property called "SetFocusOnError" that is supposed to set the focus to the first control that failed validation. This all works great until your validator control is inside a naming container. A ASP.NET blogger, David Findley, has a solution to it by overriding the Validate method on a page.

C# version:

public override void Validate(string group)

    // find the first validator that failed
    foreach (IValidator validator in GetValidators(group))
        if (validator is BaseValidator && !validator.IsValid)
            BaseValidator bv = (BaseValidator)validator;

            // look up the control that failed validation
            Control target = bv.NamingContainer.FindControl(bv.ControlToValidate);

            // set the focus to it
            if (target != null)


C# 3.0 and higher using LINQ:

public override void Validate(string group)

    // get the first validator that failed
    var validator = GetValidators(group)
        .FirstOrDefault(v => !v.IsValid);

    // set the focus to the control
    // that the validator targets
    if (validator != null)
        Control target = validator.NamingContainer.FindControl(validator.ControlToValidate);

        if (target != null)

Visual Basic 2008 (VB.NET):

Public Overrides Sub Validate(ByVal group As String)

    'find the first validator that failed
    For Each validator As IValidator In GetValidators(group)
        If (validator.GetType() Is GetType(BaseValidator) AndAlso Not validator.IsValid) Then
            Dim bv As BaseValidator = CType(validator, BaseValidator)

            'look up the control that failed validation
            Dim target As Control = bv.NamingContainer.FindControl(bv.ControlToValidate)

            'set the focus to it
            If target IsNot Nothing Then
            End If

            Exit For
        End If
End Sub

A Quick Fix for the Validator SetFocusOnError Bug [via]

Popular Posts

How to stop FortiClient from starting automatically?

Installed FortiClient recently but the challenge in disabling the application/service from running automatically on every start-up annoyed me. Attempt to stop 'FortiClient Service Scheduler' only return 'Parameter is incorrect' error message.

An article on Technet help solve my trouble. To stop FortiClient from starting automatically, try the following:
Shut down FortiClient from the system tray.
Run net stop fortishield on command prompt.
Run msconfig.
On msconfig, switch to the Services tab. Clear the FortiClient Service Scheduler check box and click Apply.Run services.msc on command prompt to open up show all available services.Look for FortiClient Service Scheduler. Switch Startup type to Manual.Restart your computer. FortiClient should not be running automatically the next time round. Hope it helps.

Ho Ching named 5th most powerful and is mistaken as first lady by Forbes

Forbes named Singapore Prime Minister wife and CEO of Temasek Holdings, Ho Ching, as the 5th most powerful woman in the world. Ho Ching is mistaken as Singapore's first lady! OMG!

I wonder how can Forbes makes such a blunder. For a complete list, refer to here.

Speech by Mr Inderjit Singh on Population White Paper

People's Action Party MP, Mr Inderjit Singh, debated on the Population White Paper and put up his point across that he is against his own party's 6.9m projected population. I applaud his courage to stand up against the party whip and for his fellow Singaporeans.

His key points are;

Slow down immigration and focus on resolving all issue related to the past population boom.We can live with a slightly slower growth (not zero or slow growth) and hence moderate dependence on foreigners.Use the Dubai model to complement our local workforce with foreign workforce, but don’t grant them PRs – ie a transient workforce.Abandon the 6.9m figure by 2030, this will be another rapid growth which we cannot handle.Solve Singaporeans problems first and also don’t give PRs same privileges as citizens.
As published on Mr Inderjit Singh's Facebook status, the full speech made in the parliament is as below:

Speech by Mr Inderjit Singh, MP for Ang Mo Kio GRC
On the White Paper on Population

Madam S…