The basics of repeater

[maffarazo]

I'm going to make a website where you can purchase stuff..
I'm having problems with the repeater. The problem is I dont know what to select in my repeater.

it's something like this

<table cellpadding="0" cellspacing="0">
<tr valign="top" >
    <td>Just nu har vi specialerbjudande på:
    </td>
</tr>
<tr>
 
    <asp:Repeater ID="repeater" runat="server">
 
           <ItemTemplate>
                  </tr>
                  <tr>
                        <td>
                       <%#DataBinder.Eval(Container.DataItem,"gdname")%>                           
                        </td>
 
                     <td>
                            <asp:textbox id="Numbers" runat="server" />purchases
                     </td>
               </tr>
               <tr>
                     <td>
                           <asp:button id="btn1" runat="server" text="Purchase" onclick="purchase" />      
       </ItemTemplate>          
    </asp:Repeater>
 
   </tr> 
</table>

how do I get the information of wich goods they purshase? normally I would send a id with a label or something but all the labels on the site will have the same ID so the server wont know wich one to take the information from.

same goes for the button

so I just need the basics of how to use repeater, btw.. It seems I can't use labels inside the reapeter at all. can't find the id when writing, like it doesent exist at all

Thx =)

[Frinavale]

Well actually the ID of the Lables and Buttons within a Repeater all have unique IDs when they are rendered in the browser.

The Repeater's NamingContainer takes care of that.

To retrieve a Label or Button or Textbox (any control) from a repeater (or any other control that implements the INamingContinaer interface) you would use the FindControl() method.

All the information you need on Repeaters and any other .NET controls can be found in the MSDN Library. This resource should get you pointed in the right direction....there are multiple articles on theRepeaters there. I recommend bookmarking the MSDN Library and using it as your primary resource when developing in .NET.

[maffarazo]

Thx alot :D
now can I finally finnish my project :P

[maffarazo]

Only one problem =( dont know how to prevent this error to occur

CS0122: 'test.Button1_Click(object, System.EventArgs)' is inaccessible due to its protection level

I used:

 private void Button1_Click(object sender, EventArgs MyEventArgs)
    {
 
        Control myControl1 = FindControl("numbers");
        if (myControl1 != null)
        {
 
            Control myControl2 = myControl1.Parent;
            Response.Write("Parent of the text box is : " + myControl2.ID);
        }
        else
        {
            Response.Write("Control not found");
        }
    }
 

any ideas? guess there's some settings I have to do?

[maffarazo]

to prevent this problem I changed it from private to public..

but I still got the problem I had earlier when pressing a button

Invalid postback or callback argument. Event validation is enabled using <pages enableEventValidation="true"/> in configuration or <%@ Page EnableEventValidation="true" %> in a page. For security purposes, this feature verifies that arguments to postback or callback events originate from the server control that originally rendered them. If the data is valid and expected, use the ClientScriptManager.RegisterForEventValidation method in order to register the postback or callback data for validation.

that's the error I get, can anyone please help me?

[maffarazo]

sorry for making so many posts in this one and not doing the "[code]" around the code.

anyway, the only solution I have found so far is to use

<%@ Page Language="C#" MasterPageFile="~/MasterPage.master" EnableEventValidation="false" AutoEventWireup="true" CodeFile="test.aspx.cs" Inherits="test" Title="Untitled Page" %>
 

in the site. but by doing so I lower the security on the site. Not that it matters.

I also know that I can use ClientScriptManager.RegisterForEventValidation
but I dont know how this works and I can't seem to find any information about it.
anyone know?

just one more thing. I'm using

 private void Button1_Click(object sender, EventArgs MyEventArgs)
     {
 
       Control myControl1 = FindControl("numbers");
         if (myControl1 != null)
         {
 
             Control myControl2 = myControl1.Parent;
            Response.Write("Parent of the text box is : " + myControl2.ID);
        }
         else
        {
             Response.Write("Control not found");
        }
     }

but i always get the control not found. arent I supposed to write the ID in findcontrol?