"Martin" <martin_no_spam@martinz.co.nz> wrote in message
news:OPDr3UEWFHA.228@TK2MSFTNGP12.phx.gbl...
> Hi,
>
> I have created a composite control that has a number of standard asp.net
> controls on it that can themselves cause postbacks.
> What i need to do in my composite control is to determine which consituent
> control caused a postback.
>
> for example a have a consituent controls with two buttons on it "button1"
> and "button2"
> I have registered my control for postbacks using
> "Page.RegisterRequiresPostBack(this);"
>
> I have include a dynamic handler for my buttons and registered this
> however
> when I click the button the code in my dynamic handler does not get
> raised.
>
> however, because I have implemented "IPostBackDataHandler " the event
> "RaisePostDataChangedEvent()" does get raised however this seems to have
> no
> information in it about which button was clicked all it tells me is that a
> postback occured.
>
> what ideally i need to do is get the dynamic button handlesr to work, can
> any body give me any advice on this or point me to a good article that
> shows
> how to run button handlers from within compsoite controls.
> i have included my code below for anybody's reference. -- this is my
> entire
> test user control.
>
> many thanks in advance.
>
> cheers
>
> martin.
>
> using System;
>
> using System.Web.UI;
>
> using System.Web.UI.WebControls;
>
> using System.ComponentModel;
>
> using System.Collections.Specialized;
>
> namespace CompositeControls
>
> {
>
> /// <summary>
>
> /// Summary description for Compositecontrol.
>
> /// </summary>
>
> [DefaultProperty("Text"),
>
> ToolboxData("<{0}:Compositecontrol runat=server></{0}:Compositecontrol>")]
>
> public class Compositecontrol : System.Web.UI.WebControls.WebControl,
> IPostBackDataHandler
>
> {
>
> private Panel pnl;
>
> private string text;
>
>
> [Bindable(true),
>
> Category("Appearance"),
>
> DefaultValue("")]
>
> public string txtFirstName
>
> {
>
> get
>
> {
>
> return text;
>
> }
>
> set
>
> {
>
> text = value;
>
> }
>
> }
>
> protected override void OnInit(EventArgs e)
>
> {
>
> base.OnInit(e);
>
> if (Page != null)
>
> Page.RegisterRequiresPostBack(this);
>
> }
>
>
>
> protected override void CreateChildControls()
>
> {
>
> System.Web.HttpContext.Current.Trace.Write("CreateChildControls()");
>
> pnl = new Panel();
>
> TextBox txtbox = new TextBox();
>
> txtbox.ID = UniqueID;
>
> txtbox.Text = txtFirstName;
>
> pnl.Controls.Add(txtbox);
>
> Button btn;
>
> btn = new Button();
>
> btn.Text = "Submit control 1";
>
> btn.Click += new EventHandler(btn_Click);
>
> btn.ID = UniqueID +1;
>
> pnl.Controls.Add(btn);
>
> btn = new Button();
>
> btn.Text = "Submit control 2";
>
> btn.Click += new EventHandler(btn_Click);
>
> btn.ID = UniqueID +2;
>
> pnl.Controls.Add(btn);
>
> base.CreateChildControls();
>
> }
>
> private void btn_Click(object sender, EventArgs e)
>
> {
>
> System.Web.HttpContext.Current.Response.Write("******GOT THE Button Click
> from btn_Click !!!!*****");
>
> System.Web.HttpContext.Current.Trace.Write("******GOT THE Button Click
> from
> btn_Click !!!!*****");
>
> }
>
> /// <summary>
>
> /// Render this control to the output parameter specified.
>
> /// </summary>
>
> /// <param name="output"> The HTML writer to write out to </param>
>
> protected override void Render(HtmlTextWriter output)
>
> {
>
> System.Web.HttpContext.Current.Trace.Write("Render()");
>
> pnl.RenderControl(output);
>
> }
>
> public virtual bool LoadPostData(string postDataKey,
>
> NameValueCollection postCollection)
>
> {
>
> foreach (string s in postCollection)
>
> {
>
> System.Web.HttpContext.Current.Response.Write(s + " : value " +
> postCollection.Get(s) + "<br>");
>
> }
>
> String presentValue = txtFirstName;
>
> String postedValue = postCollection[postDataKey];
>
> System.Web.HttpContext.Current.Response.Write(postDataKey.ToString());
>
> if (presentValue == null || !presentValue.Equals(postedValue))
>
> {
>
>
> txtFirstName = postedValue;
>
> return true;
>
> }
>
> return false;
>
> }
>
>
>
> public virtual void RaisePostDataChangedEvent()
>
> {
>
> System.Web.HttpContext.Current.Response.Write("******GOT THE Event from
> RaisePostDataChangedEvent!!!!*****<br>");
>
> System.Web.HttpContext.Current.Response.Write("Need to deciede which
> control
> event raised the postback<br>");
>
> Control control = null;
>
> string ctrlname = Page.Request.Params.Get("__EVENTTARGET");
>
> if (ctrlname != null && ctrlname != string.Empty)
>
> {
>
> control = Page.FindControl(ctrlname);
>
> }
>
> else
>
> {
>
> foreach (string ctl in Page.Request.Form)
>
> {
>
> Control c = Page.FindControl(ctl);
>
> if (c is System.Web.UI.WebControls.Button)
>
> {
>
> control = c;
>
> break;
>
> }
>
> }
>
> }
>
> //System.Web.HttpContext.Current.Response.Write(ctrlname.ToString());
>
> //OnValueChanged(EventArgs.Empty);
>
> }
>
> }
>
> }
>
>
>
>
>

"Teemu Keiski" <jot***@aspalliance.com> wrote in message
news:e%238bR2EWFHA.3216@TK2MSFTNGP10.phx.gbl...
> Hi,
>
> because the control contains postbacking child controls, it would need to
> implement INamingContainer interface.
>
> --
> Teemu Keiski
> ASP.NET MVP, AspInsider
> Finland, EU
>
>
> "Martin" <martin_no_spam@martinz.co.nz> wrote in message
> news:OPDr3UEWFHA.228@TK2MSFTNGP12.phx.gbl...
> > Hi,
> >
> > I have created a composite control that has a number of standard asp.net
> > controls on it that can themselves cause postbacks.
> > What i need to do in my composite control is to determine which
consituent
> > control caused a postback.
> >
> > for example a have a consituent controls with two buttons on it
"button1"
> > and "button2"
> > I have registered my control for postbacks using
> > "Page.RegisterRequiresPostBack(this);"
> >
> > I have include a dynamic handler for my buttons and registered this
> > however
> > when I click the button the code in my dynamic handler does not get
> > raised.
> >
> > however, because I have implemented "IPostBackDataHandler " the event
> > "RaisePostDataChangedEvent()" does get raised however this seems to have
> > no
> > information in it about which button was clicked all it tells me is that
a
> > postback occured.
> >
> > what ideally i need to do is get the dynamic button handlesr to work,
can
> > any body give me any advice on this or point me to a good article that
> > shows
> > how to run button handlers from within compsoite controls.
> > i have included my code below for anybody's reference. -- this is my
> > entire
> > test user control.
> >
> > many thanks in advance.
> >
> > cheers
> >
> > martin.
> >
> > using System;
> >
> > using System.Web.UI;
> >
> > using System.Web.UI.WebControls;
> >
> > using System.ComponentModel;
> >
> > using System.Collections.Specialized;
> >
> > namespace CompositeControls
> >
> > {
> >
> > /// <summary>
> >
> > /// Summary description for Compositecontrol.
> >
> > /// </summary>
> >
> > [DefaultProperty("Text"),
> >
> > ToolboxData("<{0}:Compositecontrol

> >
> > public class Compositecontrol : System.Web.UI.WebControls.WebControl,
> > IPostBackDataHandler
> >
> > {
> >
> > private Panel pnl;
> >
> > private string text;
> >
> >
> > [Bindable(true),
> >
> > Category("Appearance"),
> >
> > DefaultValue("")]
> >
> > public string txtFirstName
> >
> > {
> >
> > get
> >
> > {
> >
> > return text;
> >
> > }
> >
> > set
> >
> > {
> >
> > text = value;
> >
> > }
> >
> > }
> >
> > protected override void OnInit(EventArgs e)
> >
> > {
> >
> > base.OnInit(e);
> >
> > if (Page != null)
> >
> > Page.RegisterRequiresPostBack(this);
> >
> > }
> >
> >
> >
> > protected override void CreateChildControls()
> >
> > {
> >
> > System.Web.HttpContext.Current.Trace.Write("CreateChildControls()");
> >
> > pnl = new Panel();
> >
> > TextBox txtbox = new TextBox();
> >
> > txtbox.ID = UniqueID;
> >
> > txtbox.Text = txtFirstName;
> >
> > pnl.Controls.Add(txtbox);
> >
> > Button btn;
> >
> > btn = new Button();
> >
> > btn.Text = "Submit control 1";
> >
> > btn.Click += new EventHandler(btn_Click);
> >
> > btn.ID = UniqueID +1;
> >
> > pnl.Controls.Add(btn);
> >
> > btn = new Button();
> >
> > btn.Text = "Submit control 2";
> >
> > btn.Click += new EventHandler(btn_Click);
> >
> > btn.ID = UniqueID +2;
> >
> > pnl.Controls.Add(btn);
> >
> > base.CreateChildControls();
> >
> > }
> >
> > private void btn_Click(object sender, EventArgs e)
> >
> > {
> >
> > System.Web.HttpContext.Current.Response.Write("******GOT THE Button
Click
> > from btn_Click !!!!*****");
> >
> > System.Web.HttpContext.Current.Trace.Write("******GOT THE Button Click
> > from
> > btn_Click !!!!*****");
> >
> > }
> >
> > /// <summary>
> >
> > /// Render this control to the output parameter specified.
> >
> > /// </summary>
> >
> > /// <param name="output"> The HTML writer to write out to </param>
> >
> > protected override void Render(HtmlTextWriter output)
> >
> > {
> >
> > System.Web.HttpContext.Current.Trace.Write("Render()");
> >
> > pnl.RenderControl(output);
> >
> > }
> >
> > public virtual bool LoadPostData(string postDataKey,
> >
> > NameValueCollection postCollection)
> >
> > {
> >
> > foreach (string s in postCollection)
> >
> > {
> >
> > System.Web.HttpContext.Current.Response.Write(s + " : value " +
> > postCollection.Get(s) + "<br>");
> >
> > }
> >
> > String presentValue = txtFirstName;
> >
> > String postedValue = postCollection[postDataKey];
> >
> > System.Web.HttpContext.Current.Response.Write(postDataKey.ToString());
> >
> > if (presentValue == null || !presentValue.Equals(postedValue))
> >
> > {
> >
> >
> > txtFirstName = postedValue;
> >
> > return true;
> >
> > }
> >
> > return false;
> >
> > }
> >
> >
> >
> > public virtual void RaisePostDataChangedEvent()
> >
> > {
> >
> > System.Web.HttpContext.Current.Response.Write("******GOT THE Event from
> > RaisePostDataChangedEvent!!!!*****<br>");
> >
> > System.Web.HttpContext.Current.Response.Write("Need to deciede which
> > control
> > event raised the postback<br>");
> >
> > Control control = null;
> >
> > string ctrlname = Page.Request.Params.Get("__EVENTTARGET");
> >
> > if (ctrlname != null && ctrlname != string.Empty)
> >
> > {
> >
> > control = Page.FindControl(ctrlname);
> >
> > }
> >
> > else
> >
> > {
> >
> > foreach (string ctl in Page.Request.Form)
> >
> > {
> >
> > Control c = Page.FindControl(ctl);
> >
> > if (c is System.Web.UI.WebControls.Button)
> >
> > {
> >
> > control = c;
> >
> > break;
> >
> > }
> >
> > }
> >
> > }
> >
> > //System.Web.HttpContext.Current.Response.Write(ctrlname.ToString());
> >
> > //OnValueChanged(EventArgs.Empty);
> >
> > }
> >
> > }
> >
> > }
> >
> >
> >
> >
> >
>
>

"Martin" <martin_no_spam@martinz.co.nz> wrote in message
news:O$f0pNFWFHA.1508@tk2msftngp13.phx.gbl...
> Hi Teemu,
>
> thanks for the reply,
> I just done a quick search on INamingContainer  and the document i found
> said  "This is a marker interface only."
> I am not quite sure what this means.
>
> can you offer any further advice or pointers in the right direction.
>
> cheers
>
> martin.
>
> "Teemu Keiski" <jot***@aspalliance.com> wrote in message
> news:e%238bR2EWFHA.3216@TK2MSFTNGP10.phx.gbl...
>> Hi,
>>
>> because the control contains postbacking child controls, it would need to
>> implement INamingContainer interface.
>>
>> --
>> Teemu Keiski
>> ASP.NET MVP, AspInsider
>> Finland, EU
>>
>>
>> "Martin" <martin_no_spam@martinz.co.nz> wrote in message
>> news:OPDr3UEWFHA.228@TK2MSFTNGP12.phx.gbl...
>> > Hi,
>> >
>> > I have created a composite control that has a number of standard
>> > asp.net
>> > controls on it that can themselves cause postbacks.
>> > What i need to do in my composite control is to determine which
> consituent
>> > control caused a postback.
>> >
>> > for example a have a consituent controls with two buttons on it
> "button1"
>> > and "button2"
>> > I have registered my control for postbacks using
>> > "Page.RegisterRequiresPostBack(this);"
>> >
>> > I have include a dynamic handler for my buttons and registered this
>> > however
>> > when I click the button the code in my dynamic handler does not get
>> > raised.
>> >
>> > however, because I have implemented "IPostBackDataHandler " the event
>> > "RaisePostDataChangedEvent()" does get raised however this seems to
>> > have
>> > no
>> > information in it about which button was clicked all it tells me is
>> > that
> a
>> > postback occured.
>> >
>> > what ideally i need to do is get the dynamic button handlesr to work,
> can
>> > any body give me any advice on this or point me to a good article that
>> > shows
>> > how to run button handlers from within compsoite controls.
>> > i have included my code below for anybody's reference. -- this is my
>> > entire
>> > test user control.
>> >
>> > many thanks in advance.
>> >
>> > cheers
>> >
>> > martin.
>> >
>> > using System;
>> >
>> > using System.Web.UI;
>> >
>> > using System.Web.UI.WebControls;
>> >
>> > using System.ComponentModel;
>> >
>> > using System.Collections.Specialized;
>> >
>> > namespace CompositeControls
>> >
>> > {
>> >
>> > /// <summary>
>> >
>> > /// Summary description for Compositecontrol.
>> >
>> > /// </summary>
>> >
>> > [DefaultProperty("Text"),
>> >
>> > ToolboxData("<{0}:Compositecontrol
> runat=server></{0}:Compositecontrol>")]
>> >
>> > public class Compositecontrol : System.Web.UI.WebControls.WebControl,
>> > IPostBackDataHandler
>> >
>> > {
>> >
>> > private Panel pnl;
>> >
>> > private string text;
>> >
>> >
>> > [Bindable(true),
>> >
>> > Category("Appearance"),
>> >
>> > DefaultValue("")]
>> >
>> > public string txtFirstName
>> >
>> > {
>> >
>> > get
>> >
>> > {
>> >
>> > return text;
>> >
>> > }
>> >
>> > set
>> >
>> > {
>> >
>> > text = value;
>> >
>> > }
>> >
>> > }
>> >
>> > protected override void OnInit(EventArgs e)
>> >
>> > {
>> >
>> > base.OnInit(e);
>> >
>> > if (Page != null)
>> >
>> > Page.RegisterRequiresPostBack(this);
>> >
>> > }
>> >
>> >
>> >
>> > protected override void CreateChildControls()
>> >
>> > {
>> >
>> > System.Web.HttpContext.Current.Trace.Write("CreateChildControls()");
>> >
>> > pnl = new Panel();
>> >
>> > TextBox txtbox = new TextBox();
>> >
>> > txtbox.ID = UniqueID;
>> >
>> > txtbox.Text = txtFirstName;
>> >
>> > pnl.Controls.Add(txtbox);
>> >
>> > Button btn;
>> >
>> > btn = new Button();
>> >
>> > btn.Text = "Submit control 1";
>> >
>> > btn.Click += new EventHandler(btn_Click);
>> >
>> > btn.ID = UniqueID +1;
>> >
>> > pnl.Controls.Add(btn);
>> >
>> > btn = new Button();
>> >
>> > btn.Text = "Submit control 2";
>> >
>> > btn.Click += new EventHandler(btn_Click);
>> >
>> > btn.ID = UniqueID +2;
>> >
>> > pnl.Controls.Add(btn);
>> >
>> > base.CreateChildControls();
>> >
>> > }
>> >
>> > private void btn_Click(object sender, EventArgs e)
>> >
>> > {
>> >
>> > System.Web.HttpContext.Current.Response.Write("******GOT THE Button
> Click
>> > from btn_Click !!!!*****");
>> >
>> > System.Web.HttpContext.Current.Trace.Write("******GOT THE Button Click
>> > from
>> > btn_Click !!!!*****");
>> >
>> > }
>> >
>> > /// <summary>
>> >
>> > /// Render this control to the output parameter specified.
>> >
>> > /// </summary>
>> >
>> > /// <param name="output"> The HTML writer to write out to </param>
>> >
>> > protected override void Render(HtmlTextWriter output)
>> >
>> > {
>> >
>> > System.Web.HttpContext.Current.Trace.Write("Render()");
>> >
>> > pnl.RenderControl(output);
>> >
>> > }
>> >
>> > public virtual bool LoadPostData(string postDataKey,
>> >
>> > NameValueCollection postCollection)
>> >
>> > {
>> >
>> > foreach (string s in postCollection)
>> >
>> > {
>> >
>> > System.Web.HttpContext.Current.Response.Write(s + " : value " +
>> > postCollection.Get(s) + "<br>");
>> >
>> > }
>> >
>> > String presentValue = txtFirstName;
>> >
>> > String postedValue = postCollection[postDataKey];
>> >
>> > System.Web.HttpContext.Current.Response.Write(postDataKey.ToString());
>> >
>> > if (presentValue == null || !presentValue.Equals(postedValue))
>> >
>> > {
>> >
>> >
>> > txtFirstName = postedValue;
>> >
>> > return true;
>> >
>> > }
>> >
>> > return false;
>> >
>> > }
>> >
>> >
>> >
>> > public virtual void RaisePostDataChangedEvent()
>> >
>> > {
>> >
>> > System.Web.HttpContext.Current.Response.Write("******GOT THE Event from
>> > RaisePostDataChangedEvent!!!!*****<br>");
>> >
>> > System.Web.HttpContext.Current.Response.Write("Need to deciede which
>> > control
>> > event raised the postback<br>");
>> >
>> > Control control = null;
>> >
>> > string ctrlname = Page.Request.Params.Get("__EVENTTARGET");
>> >
>> > if (ctrlname != null && ctrlname != string.Empty)
>> >
>> > {
>> >
>> > control = Page.FindControl(ctrlname);
>> >
>> > }
>> >
>> > else
>> >
>> > {
>> >
>> > foreach (string ctl in Page.Request.Form)
>> >
>> > {
>> >
>> > Control c = Page.FindControl(ctl);
>> >
>> > if (c is System.Web.UI.WebControls.Button)
>> >
>> > {
>> >
>> > control = c;
>> >
>> > break;
>> >
>> > }
>> >
>> > }
>> >
>> > }
>> >
>> > //System.Web.HttpContext.Current.Response.Write(ctrlname.ToString());
>> >
>> > //OnValueChanged(EventArgs.Empty);
>> >
>> > }
>> >
>> > }
>> >
>> > }
>> >
>> >
>> >
>> >
>> >
>>
>>
>
>