Itemplate sample : Access controls on postback

1 Apr 2005 6:33 AM

Luhar Powell via .NET 247

How to access other controls values in ITemplate?
Hi,

I have simple Itemplate implementation with 2 textboxes and button.
On postback I would like to access values entered by user in the textbox controls.

The Itemplate sample below has two text boxes for first name and last name. There is Ok button that will do process first name and last name entered by the user.

Thanks,
Luhar

<%@ Page %>
<%@ Register TagPrefix="TemplateControlSamples" Namespace="TemplateControlSamples" Assembly="TemplateControlSamples" %>
    <script runat=server language=c#>
    void Page_Load()
    {
        DataBind();
    }
    public void ButtonOK_Click(object sender, System.EventArgs e)
{
Response.Write("Button Ok clicked");
//Call some function with firstname and last name entered by user?
//How do i get access to first name and last name?
}
    </script>

<html>

   <body>

      <form method="POST" runat="server">

          Non Templated version:

          <TemplateControlSamples:Template1 Message="Hello World!" runat=server/>

          <hr>

          Templated version:<br>

          <TemplateControlSamples:Template1 Message="Hello World!" runat=server>
              <MessageTemplate>
                <b><i><u>
                <%# Container.Message %>
                <asp:textbox id=TextBoxFirstName runat="server" NAME="Textbox1"></asp:TextBox><br>
                <asp:textbox id=TextBoxLastName runat="server" NAME="Textbox2"></asp:TextBox><br>
                <asp:button id=ButtonOK onclick=ButtonOk_Click Text="Ok" Runat="server"></asp:Button>
                </u></i></b>
              </MessageTemplate>
          </TemplateControlSamples:Template1>

      </form>

   </body>

</html>

/*******************************************************/
using System;
using System.Web;
using System.Web.UI;

namespace TemplateControlSamples
{

public class TemplateItem : Control, INamingContainer
{
private String     _message         = null;

public TemplateItem(String message)
{
_message = message;
}

public String Message
{

get
{
return _message;
}
set
{
_message = value;
}
}
}

[
ParseChildren(true)
]
public class Template1 : Control, INamingContainer
{

private ITemplate _messageTemplate = null;
private String     _message         = null;

public String Message
{

get
{
return _message;
}
set
{
_message = value;
}
}

[
PersistenceMode(PersistenceMode.InnerProperty),
TemplateContainer(typeof(TemplateItem))
]
public ITemplate MessageTemplate
{
get
{
return _messageTemplate;
}
set
{
_messageTemplate = value;
}
}

public override void DataBind()
{
EnsureChildControls();
base.DataBind();
}

protected override void CreateChildControls()
{

// If a template has been specified, use it to create children.
// Otherwise, create a single literalcontrol with message value

if (MessageTemplate != null)
{
Controls.Clear();
TemplateItem i = new TemplateItem(this.Message);
MessageTemplate.InstantiateIn(i);

Controls.Add(i);
}
else
{
this.Controls.Add(new LiteralControl(this.Message));
}
}
}
}

--------------------------------
From: Luhar Powell

-----------------------
Posted by a user from .NET 247 (http://www.dotnet247.com/)

<Id>74yo8e5ODEqJcNxJ8aYlSQ==</Id>

1 Apr 2005 3:39 PM

Brock Allen

Use YourTemplateControl.FindControl("Textbox1") or if your template is a
data binding control then you'd need to access the row in your template control
then call FindControl("Textbox1") on that.

-Brock
DevelopMentor
http://staff.develop.com/ballen

Show quoteHide quote

> How to access other controls values in ITemplate? Hi,
>
> I have simple Itemplate implementation with 2 textboxes and button. On
> postback I would like to access values entered by user in the textbox
> controls.
>
> The Itemplate sample below has two text boxes for first name and last
> name. There is Ok button that will do process first name and last name
> entered by the user.
>
> Thanks, Luhar
>
> <%@ Page %>
> <%@ Register TagPrefix="TemplateControlSamples"
> Namespace="TemplateControlSamples" Assembly="TemplateControlSamples"
> %>
> <script runat=server language=c#>
> void Page_Load()
> {
> DataBind();
> }
> public void ButtonOK_Click(object sender, System.EventArgs e)
> {
> Response.Write("Button Ok clicked");
> //Call some function with firstname and last name entered by user?
> //How do i get access to first name and last name?
> }
> </script>
> <html>
>
> <body>
>
> <form method="POST" runat="server">
>
> Non Templated version:
>
> <TemplateControlSamples:Template1 Message="Hello World!"
> runat=server/>
>
> <hr>
>
> Templated version:<br>
>
> <TemplateControlSamples:Template1 Message="Hello World!"
> runat=server>
> <MessageTemplate>
> <b><i><u>
> <%# Container.Message %>
> <asp:textbox id=TextBoxFirstName runat="server"
> NAME="Textbox1"></asp:TextBox><br>
> <asp:textbox id=TextBoxLastName runat="server"
> NAME="Textbox2"></asp:TextBox><br>
> <asp:button id=ButtonOK onclick=ButtonOk_Click
> Text="Ok" Runat="server"></asp:Button>
> </u></i></b>
> </MessageTemplate>
> </TemplateControlSamples:Template1>
> </form>
>
> </body>
>
> </html>
>
> /*******************************************************/ using
> System; using System.Web; using System.Web.UI;
>
> namespace TemplateControlSamples {
>
> public class TemplateItem : Control, INamingContainer { private String
> _message = null;
>
> public TemplateItem(String message) { _message = message; }
>
> public String Message {
>
> get { return _message; } set { _message = value; } } }
>
> [ ParseChildren(true) ] public class Template1 : Control,
> INamingContainer {
>
> private ITemplate _messageTemplate = null; private String
> _message = null;
>
> public String Message {
>
> get { return _message; } set { _message = value; } }
>
> [ PersistenceMode(PersistenceMode.InnerProperty),
> TemplateContainer(typeof(TemplateItem)) ] public ITemplate
> MessageTemplate { get { return _messageTemplate; } set {
> _messageTemplate = value; } }
>
> public override void DataBind() { EnsureChildControls();
> base.DataBind(); }
>
> protected override void CreateChildControls() {
>
> // If a template has been specified, use it to create children. //
> Otherwise, create a single literalcontrol with message value
>
> if (MessageTemplate != null) { Controls.Clear(); TemplateItem i = new
> TemplateItem(this.Message); MessageTemplate.InstantiateIn(i);
>
> Controls.Add(i); } else { this.Controls.Add(new
> LiteralControl(this.Message)); } } } }
>
> --------------------------------
> From: Luhar Powell
> -----------------------
> Posted by a user from .NET 247 (http://www.dotnet247.com/)
> <Id>74yo8e5ODEqJcNxJ8aYlSQ==</Id>
>