how to access controls inside asp repeater control - asp.net

Question

I am having form which allows user to update their profile and contact information.I have created this form using asp:repeater control inside a div tag.I am having 4 div tags inside that having repeater control which contains other controls such as text boxes and drop down list.I just want to know,how i can access controls inside repeater control.I am giving the code:
<tr>
<td class="directorytdWidth">
Gender:
</td>
<td class="directoryTdPadding">
<asp:TextBox ID="txtGender" runat="server" Width="100px" Text='<%#Eval("gender")%>'></asp:TextBox>
<asp:RadioButtonList ID="radioGender" runat="server" RepeatColumns="2" Visible="false">
<asp:ListItem Text="Male" Value="M"></asp:ListItem>
<asp:ListItem Text="Female" Value="F"> </asp:ListItem>
</asp:RadioButtonList>
</td>
</tr>
<tr>
<td class="directorytdWidth">
Address:
</td>
<td class="directoryTdPadding">
<asp:TextBox ID="txtAdd" runat="server" Width="200px" Text='<%#Eval("candiAddress")%>'
TextMode="MultiLine" Height="75px"></asp:TextBox>
</td>
</tr>
<tr>
<td class="directorytdWidth">
Country:
</td>
<td class="directoryTdPadding">
<asp:TextBox ID="txtCountry" runat="server" Width="150px" Text='<%#Eval("countryName")%>'></asp:TextBox>
<asp:DropDownList ID="drpCountry" runat="server" SelectedValue='<%#Eval("countryName")%>' Width="150px" Height="24px" Visible="false"
AutoPostBack="true" OnSelectedIndexChanged="drpCountry_SelectedIndexChanged">
</asp:DropDownList>
</td>
</tr>
<tr>
<td class="directorytdWidth">
State:
</td>
<td class="directoryTdPadding">
<asp:TextBox ID="txtState" runat="server" Width="150px" Text='<%#Eval("stateName")%>'></asp:TextBox>
<asp:DropDownList ID="drpState" runat="server" SelectedeValue='<%#Eval("stateName")%>' Width="150px" Visible="false" Height="24px"
AutoPostBack="true" OnSelectedIndexChanged="drpState_SelectedIndexChanged">
</asp:DropDownList>
</td>
</tr>
<tr>
<td class="directorytdWidth">
City:
</td>
<td class="directoryTdPadding">
<asp:TextBox ID="txtCity" runat="server" Width="150px" Text='<%#Eval("cityName")%>'></asp:TextBox>
<asp:DropDownList ID="drpCity" runat="server" Width="150px" Height="24px" Visible="false"
AutoPostBack="true">
</asp:DropDownList>
</td>
</tr>
<tr>
<td class="directorytdWidth">
Postal Code:
</td>
<td class="directoryTdPadding">
<asp:TextBox ID="txtPostalCode" runat="server" Width="150px" Text='<%#Eval("pincode")%>'></asp:TextBox>
</td>
</tr>
<tr>
<td class="directorytdWidth">
Landline:
</td>
<td class="directoryTdPadding">
<asp:TextBox ID="txtLandline" runat="server" Width="150px" Text='<%#Eval("landline")%>'></asp:TextBox>
</td>
</tr>
<tr>
<td class="directorytdWidth">
Mobile Number:
</td>
<td class="directoryTdPadding">
<asp:TextBox ID="txtMobile" runat="server" Width="150px" Text='<%#Eval("mobile")%>'></asp:TextBox>
</td>
</tr>
<tr>
<td class="directorytdWidth">
Date of Birth:
</td>
<td class="directoryTdPadding">
<asp:TextBox ID="txtDob" runat="server" Width="150px" Text='<%#Eval("dob")%>'></asp:TextBox>
<asp:DropDownList ID="drpYear" runat="server" Visible="false" Height="24px" Width="80px"
AutoPostBack="true">
</asp:DropDownList>
<asp:DropDownList ID="drpMonth" runat="server" Height="24px" Width="80px" OnSelectedIndexChanged="drpMonth_SelectedIndexChanged"
AutoPostBack="true" Visible="false">
<asp:ListItem Value="1" Selected="True">January</asp:ListItem>
<asp:ListItem Value="2">February</asp:ListItem>
<asp:ListItem Value="3">March</asp:ListItem>
<asp:ListItem Value="4">April</asp:ListItem>
<asp:ListItem Value="5">May</asp:ListItem>
<asp:ListItem Value="6">June</asp:ListItem>
<asp:ListItem Value="7">July</asp:ListItem>
<asp:ListItem Value="8">August</asp:ListItem>
<asp:ListItem Value="9">September</asp:ListItem>
<asp:ListItem Value="10">October</asp:ListItem>
<asp:ListItem Value="11">November</asp:ListItem>
<asp:ListItem Value="12">December</asp:ListItem>
</asp:DropDownList>
<asp:DropDownList ID="drpDate" runat="server" Height="24px" Width="50px" Visible="false"
AutoPostBack="true">
</asp:DropDownList>
</td>
</tr>
<tr>
<td class="directorytdWidth">
Email Address:
</td>
<td class="directoryTdPadding">
<asp:TextBox ID="txtEmail" runat="server" Width="150px" Text='<%#Eval("altEmail")%>'></asp:TextBox>
</td>
</tr>
In this I am having drop down selected index changed event,so how to fire this event
and also I want define functions which can be accessible in drop down event.Because when i define functions I am unable to get controls inside repeater control.So please give me any solution for this.Thanks in advance....

Answer 1

Not sure what controls do you want to access, but
1) make them runat="server" and give them ID
2) add event handler to repeater for ItemCreated, or ItemDataBound events
3) access control like this:
void R1_ItemCreated(Object Sender, RepeaterItemEventArgs e) {
var label = (Label)e.Item.FindControl("YourItemId")
}

Answer 2

you cannot access the dropdown events once they are in the repeater control. you can perform actions on buttons using CommandName and CommandArgumnent in ItemCommand event of repeater.
however you can do a workaround. bring the dropdown out of repeater , generate its SelectedIndexChanged event and AutoPostback="true". Then put back in repeater. Now in its event in code behind you can perform your operations. I once did this but this isn't good way.