"Jeff" wrote:

> I want to implement a property in a custom web control. The property
> is like ControlToValidate property of standard validators.
> 
> My problem is how to implement the design-time function of this property.
> ControlToValidate in the property window will show a dropdown list which
> contains all controls that can be validated in the current page.
> 
> I don't know how to find all controls that can be validated in design-time.
>
> Who can help me? Thanks

"Kannan.V [MCSD.net]" <KannanVMCSD***@discussions.microsoft.com> wrote in message news:90548606-9DF5-463B-A086-94BC0F1D4F9B@microsoft.com...
> hi Jeff,
>
> create a property of the datatype that you wanted to be listed in the
> dropdown in the property browser.
> For example the code below lists all textboxes on the page in the return
> MyControltoValidate property.
>
> EXAMPLE:
>
> private TextBox _MyControltoValidate;
> public TextBox MyControltoValidate
> {
> get
> {
> return _MyControltoValidate;
> }
> set
> {
> _MyControltoValidate = value;
>
> }
> }
>
> Include the above code in ur control, drop the control on to your page.
> Draw some textboxes also, now when you open this property all the textboxes
> on the page will be displayed.
>
> Hope this helped you,
> Regds
> Kannan.V
>
> "Jeff" wrote:
>
>> I want to implement a property in a custom web control. The property
>> is like ControlToValidate property of standard validators.
>> 
>> My problem is how to implement the design-time function of this property.
>> ControlToValidate in the property window will show a dropdown list which
>> contains all controls that can be validated in the current page.
>> 
>> I don't know how to find all controls that can be validated in design-time.
>>
>> Who can help me? Thanks

> hi Jeff,
>
> create a property of the datatype that you wanted to be listed in the
> dropdown in the property browser.
> For example the code below lists all textboxes on the page in the return
> MyControltoValidate property.
>
> EXAMPLE:
>
> private TextBox _MyControltoValidate;
> public TextBox MyControltoValidate
>         {
>             get
>             {
>                 return _MyControltoValidate;
>             }
>             set
>             {
>                 _MyControltoValidate = value;
>                
>             }
>         }
>
> Include the above code in ur control, drop the control on to your page.
> Draw some textboxes also, now when you open this property all the textboxes
> on the page will be displayed.
>
> Hope this helped you,
> Regds
> Kannan.V
>
> "Jeff" wrote:
>
> > I want to implement a property in a custom web control. The property
> > is like ControlToValidate property of standard validators.
> > 
> > My problem is how to implement the design-time function of this property.
> > ControlToValidate in the property window will show a dropdown list which
> > contains all controls that can be validated in the current page.
> > 
> > I don't know how to find all controls that can be validated in design-time.
> >
> > Who can help me? Thanks

> Im doing the same thing as you, but the following error appears "Unable to generate code for a value of type 'System.Web.UI.HtmlControls.HtmlInputHidden'. This error occurred while trying to generate the property value for CajaDeTexto"
> but I solve the situation implementing this typeconverter to a String property:
>
> #region TypeConverter
> public class HtmlControlConverter : StringConverter
> {
> public override bool GetStandardValuesSupported(ITypeDescriptorContext context)
> {
> return true;
> }
> public override bool GetStandardValuesExclusive(ITypeDescriptorContext context)
> {
> return false;
> }
> public override StandardValuesCollection GetStandardValues(ITypeDescriptorContext context)
> {
> if ((context == null) || (context.Container == null))
> {
> return null;
> }
> Object[] serverControls = this.GetControls(context.Container);
> if (serverControls != null)
> {
> return new StandardValuesCollection(serverControls);
> }
> return null;
> }
> private object[] GetControls(IContainer container)
> {
> ArrayList availableControls = new ArrayList();
> foreach( IComponent component in container.Components )
> {
> Control serverControl = component as Control;
> if ( serverControl != null &&
> !(serverControl is Page) &&
> serverControl.ID != null &&
> serverControl.ID.Length != 0 &&
> IncludeControl(serverControl)
> )
> {
> availableControls.Add(serverControl.ID);
> }
> }
> availableControls.Sort(Comparer.Default);
> return availableControls.ToArray();
> }
> private bool IncludeControl(Control serverControl)
> {
> bool ReturnedVal = false;
> string ControlType = serverControl.GetType().ToString();
> switch(ControlType)
> {
> case "System.Web.UI.HtmlControls.HtmlInputHidden":
> ReturnedVal = true;
> break;
> case "System.Web.UI.HtmlControls.HtmlGenericControl":
> ReturnedVal = true;
> break;
> case "System.Web.UI.HtmlControls.HtmlInputText":
> ReturnedVal = true;
> break;
> case "System.Web.UI.HtmlControls.HtmlTable":
> ReturnedVal = true;
> break;
> }
> return ReturnedVal;
> }
> }
> #endregion
>
> And the implementation looks like this:
>
> #region TypeConverterImplementation
> private string _cajadetexto;
> [Bindable(false),Category("Controls"),TypeConverter(typeof(HtmlControlConverter))]
> //,EditorAttribute(typeof(System.Web.UI.Design.HtmlControlDesigner), typeof(System.Web.UI.HtmlControls.HtmlInputHidden))]
> public virtual string CajaDeTexto
> {
> get {return _cajadetexto;}
> set {_cajadetexto = value;}
> }
> #endregion
>
> This was a easy way to get out the trouble, if you knows any way better let me know it....
>
> Cheers
>
> KMILO

"Jeff" <week***@gmail.com> wrote in message
news:EE0FF5D4-A178-4272-9E9F-D3AAA669DD2F@microsoft.com...
> Thanks for your help!
> I have solved my problem!
>
> "KMILO"??:
>
>> Im doing the same thing as you, but the following error appears "Unable
>> to generate code for a value of type
>> 'System.Web.UI.HtmlControls.HtmlInputHidden'. This error occurred while
>> trying to generate the property value for CajaDeTexto"
>> but I solve the situation implementing this typeconverter to a String
>> property:
>>
>> #region TypeConverter
>> public class HtmlControlConverter : StringConverter
>> {
>> public override bool GetStandardValuesSupported(ITypeDescriptorContext
>> context)
>> {
>> return true;
>> }
>> public override bool GetStandardValuesExclusive(ITypeDescriptorContext
>> context)
>> {
>> return false;
>> }
>> public override StandardValuesCollection
>> GetStandardValues(ITypeDescriptorContext context)
>> {
>> if ((context == null) || (context.Container == null))
>> {
>> return null;
>> }
>> Object[] serverControls = this.GetControls(context.Container);
>> if (serverControls != null)
>> {
>> return new StandardValuesCollection(serverControls);
>> }
>> return null;
>> }
>> private object[] GetControls(IContainer container)
>> {
>> ArrayList availableControls = new ArrayList();
>> foreach( IComponent component in container.Components )
>> {
>> Control serverControl = component as Control;
>> if ( serverControl != null &&
>> !(serverControl is Page) &&
>> serverControl.ID != null &&
>> serverControl.ID.Length != 0 &&
>> IncludeControl(serverControl)
>> )
>> {
>> availableControls.Add(serverControl.ID);
>> }
>> }
>> availableControls.Sort(Comparer.Default);
>> return availableControls.ToArray();
>> }
>> private bool IncludeControl(Control serverControl)
>> {
>> bool ReturnedVal = false;
>> string ControlType = serverControl.GetType().ToString();
>> switch(ControlType)
>> {
>> case "System.Web.UI.HtmlControls.HtmlInputHidden":
>> ReturnedVal = true;
>> break;
>> case "System.Web.UI.HtmlControls.HtmlGenericControl":
>> ReturnedVal = true;
>> break;
>> case "System.Web.UI.HtmlControls.HtmlInputText":
>> ReturnedVal = true;
>> break;
>> case "System.Web.UI.HtmlControls.HtmlTable":
>> ReturnedVal = true;
>> break;
>> }
>> return ReturnedVal;
>> }
>> }
>> #endregion
>>
>> And the implementation looks like this:
>>
>> #region TypeConverterImplementation
>> private string _cajadetexto;
>> [Bindable(false),Category("Controls"),TypeConverter(typeof(HtmlControlConverter))]
>> //,EditorAttribute(typeof(System.Web.UI.Design.HtmlControlDesigner),
>> typeof(System.Web.UI.HtmlControls.HtmlInputHidden))]
>> public virtual string CajaDeTexto
>> {
>> get {return _cajadetexto;}
>> set {_cajadetexto = value;}
>> }
>> #endregion
>>
>> This was a easy way to get out the trouble, if you knows any way better
>> let me know it....
>>
>> Cheers
>>
>> KMILO