I've figured out a (hacky) way of doing this in the unlikely offchance that this is something anyone else runs into. I just attach an event to the Init event of the RadCaptcha control (any webcontrol should have this event to tap into), and then have the following code to work out what the validationgroup should be:

string validationGroup = ((RadCaptcha)sender).Parent.ClientID;
int start = validationGroup.IndexOf("_RenderForm_");
int end = validationGroup.IndexOf("_", start + 12);
((RadCaptcha)sender).ValidationGroup = validationGroup.Substring(0, end);

Basically, get the parent controls' ID, and strip out everything after the macro control to get the macro client id.

Cheers,

Tim.

Ugh, this is really annoying me.  I've created a custom control (dropdownlist with validation), and trying to get it to validate with the contour form. It's just not working very well for me, assumedly because i dont have the right validationGroup set.

I've tried the above code, and various combinations. I've debugged and looked through all the controls being rendered, and can't find anything that even contains "_RenderForm_" in it.  Is this supposed to work for the latest version (1.1.3)??

Here's the code i have currently:

    public class ValidatedDropdownList : DropDownList
    {
        private RangeValidator ran;
        public string InvalidMessage;
        public string IntroMessage;
        public string ClientScript = "true";
 
        public ValidatedDropdownList()
        {
            //InvalidMessage = invalidMsg;
        }
 
        protected override void OnInit(EventArgs e)
        {
            ran = new RangeValidator();
            ran.MinimumValue = "0";
            ran.MaximumValue = "99999999";
 
            ran.ControlToValidate = this.ID;
            ran.ErrorMessage = InvalidMessage;
            ran.EnableClientScript = (this.ClientScript.ToLower() != "false");
 
            string validationGroup = Parent.ClientID; // I can't find the correct control to use as the base to determine the validation group
            int start = validationGroup.IndexOf("_RenderForm_");
            int end = validationGroup.IndexOf("_", start + 12);
 
            ran.ValidationGroup = validationGroup.Substring(0, end);
 
            if (this.SelectedIndex < 0)
                ran.IsValid = false;
            //ran.IsValid = false;
 
            Controls.Add(ran);
 
        }
 
 
        protected override void Render(HtmlTextWriter w)
        {
            base.Render(w);
            base.RenderChildren(w);
            //req.RenderControl(w);
        }
 
        /// <summary>
        /// Override the CreateControlCollection to overcome the "does not allow child controls".
        /// </summary>
        /// <returns></returns>
        protected override ControlCollection CreateControlCollection()
        {
            return new ControlCollection(this);   
        }
    }
 

Please, if anybody can help steer me in the right direction, i'll be eternally grateful.  I'll happily post my full working code once i'm done, as i have been unable to find a full example outlining how to create a custom fieldset, which renders a custom webcontrol, which contains custom validation.  If there is an example out there, a link to that would suffice too.

Cheers

Greg

Actually it seems like client side validation is working okay for my control, but when that passes and it posts back, it fails on the server side.  

This has me stumped.  I'm going to bed before it breaks me completely. :|

I posted a bit more info here btw:  http://our.umbraco.org/forum/umbraco-pro/contour/12897-Best-way-to-create-a-lookup-field?p=0#comment47984

Hooray, i got this working.  Turns out it wasn't the validation group (I didnt even need to set this, since it's the only form on the page).. i just had to override the OnSelectedIndexChanged function, and call the validation from there.

Here's my working code of my custom control if anybody is interested:

    public class ValidatedDropdownList : DropDownList
    {
        private RangeValidator rangeValidator;
        public string InvalidMessage;
        public string IntroMessage;
        public string ClientScript = "true";

        protected override void OnInit(EventArgs e)
        {
            rangeValidator = new RangeValidator();
            rangeValidator.MinimumValue = "0";
            rangeValidator.MaximumValue = "99999999";

            rangeValidator.ControlToValidate = this.ID;
            rangeValidator.ErrorMessage = InvalidMessage;
            rangeValidator.EnableClientScript = (this.ClientScript.ToLower() != "false");

            rangeValidator.IsValid = validateSelectedValue(this.SelectedValue);

            Controls.Add(rangeValidator);            
        }

        protected override void OnSelectedIndexChanged(EventArgs e)
        {
            base.OnSelectedIndexChanged(e);
            rangeValidator.IsValid = validateSelectedValue(this.SelectedValue);
        }

        private bool validateSelectedValue(string inValue)
        {
            Int32 selectedValue = -5;
            bool b = Int32.TryParse(inValue, out selectedValue);

            return (b && selectedValue > 0);
        }

        protected override void Render(HtmlTextWriter w)
        {
            base.Render(w);
            base.RenderChildren(w);
        }

        /// <summary>
        /// Override the CreateControlCollection to overcome the "does not allow child controls".
        /// </summary>
        /// <returns></returns>
        protected override ControlCollection CreateControlCollection()
        {
            return new ControlCollection(this);   
        }
    }

Tim,

I need to get validation group for contour in own custom control the oninit event does not give me sender is there another way i can get it?

I have

protected override void OnInit(EventArgs e)
        {
            base.OnInit(e);
            if (PerformUniqueEmailTest && !Page.IsPostBack)
            {
                AddEmailValidatorToEmail();
            }
        }

in my addemailvalidatortoemail method in my Webcontrol i have custom validator that does unique email check on members (got contour registratation form) however the validator does not fire as i dont have contour validationgroup!!

Regards

Ismail

Ismail,

I've done some test and it seems to me that it uses the ID of the render form user control as name of the validation group.

If you add an Event handler to the PreRender event of your validation control you can locate the RenderForm usercontrol (if you have multiple forms on a page you might want to iterate over the parent property until you get the form) and set the validationgroup based on the Id.

Hope this helps,
Harald

http://harald.ulriksen.net

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