Setting the SelectedIndex value of a RadioButtonList

Can somebody tell me what would be the syntax for having an if statement and
setting the selected index of a radiobuttonlist?
This is my first project using ASP.net and I use C#.
I have a repeater with like a table layout and in the last column I want to
have three radio buttons (for each row in repeater). The value of the radio
button should be calculated from a value from the dataset.
How can I do that? When I try to use a variable inside the <asp:listitem
... runat=server/> tag I get an error saying that I cannnot use varibles i
n
a server control.
Sample code (it will be inside a table which I do no show in this sample,
for clarity)
<asp:repeater id="rptEstimates" runat="server">
<HeaderTemplate>.........</HeaderTemplate>
<ItemTemplate>
<%#DataBinder.Eval(Container,"DataItem.ProjectName")%>
..here I have a few more bound columns
..here I want to have an if statement to check the value from the daset
and to set the selected index value of the radiobuttonlist
<script runat=server>
string val=(string)ds.Fields.Item["BidResponse"];
if(val.Equals("Y"){rb1.SelectedIndex=0;}
</script> (this does not work)
<asp:RadioButtonList id="rb1" SelectedIndex=selIndex Runat=server>
<asp:ListItem Value=Y>Yes</asp:ListItem>
<asp:ListItem Value=N>No</asp:ListItem>
<asp:ListItem Value=NR>Nr</asp:ListItem>
</asp:RadioButtonList>
</ItemTemplate>
</asp:reapeater>
thank you.You can use
RadioButtonList.SelectedValue =(string)ds.Fields.Item["BidResponse"];
but you have to be sure that ds.Fields.Item["BidResponse"]; will return
Y, N
or NR otherwise the application will throw ArgumentOutOfRangeException
Regards
Martin
"Emil" <EMiclaus@.binsky.com> wrote in message
news:u0PQBHJTEHA.204@.TK2MSFTNGP10.phx.gbl...
> Can somebody tell me what would be the syntax for having an if statement
and
> setting the selected index of a radiobuttonlist?
> This is my first project using ASP.net and I use C#.
> I have a repeater with like a table layout and in the last column I want
to
> have three radio buttons (for each row in repeater). The value of the
radio
> button should be calculated from a value from the dataset.
> How can I do that? When I try to use a variable inside the <asp:listitem
> ... runat=server/> tag I get an error saying that I cannnot use varibles
in
> a server control.
> Sample code (it will be inside a table which I do no show in this sample,
> for clarity)
> <asp:repeater id="rptEstimates" runat="server">
> <HeaderTemplate>.........</HeaderTemplate>
> <ItemTemplate>
> <%#DataBinder.Eval(Container,"DataItem.ProjectName")%>
> ...here I have a few more bound columns
> ...here I want to have an if statement to check the value from the daset
> and to set the selected index value of the radiobuttonlist
> <script runat=server>
> string val=(string)ds.Fields.Item["BidResponse"];
> if(val.Equals("Y"){rb1.SelectedIndex=0;}
> </script> (this does not work)
> <asp:RadioButtonList id="rb1" SelectedIndex=selIndex Runat=server>
> <asp:ListItem Value=Y>Yes</asp:ListItem>
> <asp:ListItem Value=N>No</asp:ListItem>
> <asp:ListItem Value=NR>Nr</asp:ListItem>
> </asp:RadioButtonList>
> </ItemTemplate>
> </asp:reapeater>
> thank you.
>
>
OK, and where should I have this statement?
If i try<asp:RadioButtonList ID="rbl"
SelectedIndex=<%=(string)ds.Fields.Item["BidResponse"];%>
i get an error msg: Server tags cannot contain <% ... %> constructor.
If I use it befor to have the <asp:RadioButtonList> tag like,
<% rbl.SelectedIndex=(string)ds.Fields.Item["BidResponse"]; %> I get an
error:
Compiler Error Message: CS0246: The type or namespace name 'rbl' could not
be found (are you missing a using directive or an assembly reference?)
And besides that the field contains either "Y", "N", "NR" or nulls.
Anyway thank you for your response.
"Martin Marinov" <memmarinov@.mecrossroad.bg> wrote in message
news:uT2nsOJTEHA.1732@.TK2MSFTNGP09.phx.gbl...
> You can use
> RadioButtonList.SelectedValue =(string)ds.Fields.Item["BidResponse"];
> but you have to be sure that ds.Fields.Item["BidResponse"]; will return Y,[/co
lor]
N
> or NR otherwise the application will throw ArgumentOutOfRangeException
> Regards
> Martin
> "Emil" <EMiclaus@.binsky.com> wrote in message
> news:u0PQBHJTEHA.204@.TK2MSFTNGP10.phx.gbl...
> and
> to
> radio
varibles
> in
sample,
daset
Runat=server>
>
because the radiobuttonlist is a nested control you have to use
ItemDataBound event of the repeater control
you can use this :
<asp:repeater id="rptEstimates" runat="server" ItemDataBound="DataBoundItem>
...
<script runat="server">
void DataBoundItem(Object Sender, RepeaterItemEventArgs e) {
// This event is raised for the header, the footer, separators,
and items.
// Execute the following logic for Items and Alternating Items.
if (e.Item.ItemType == ListItemType.Item || e.Item.ItemType ==
ListItemType.AlternatingItem) {
RadioButtonList rbl =
(RadioButtonList)e.Item.FindControl("rptEstimates");
if ( rbl != null )
{
rbl.SelectedValue =
(string)((DataRow)e.Item.DataItem)["BidResponse"];
}
}
}
Regards,
Martin Marinov
</script>
"Emil" <EMiclaus@.binsky.com> wrote in message
news:uJJrfvJTEHA.3768@.TK2MSFTNGP11.phx.gbl...
> OK, and where should I have this statement?
> If i try<asp:RadioButtonList ID="rbl"
> SelectedIndex=<%=(string)ds.Fields.Item["BidResponse"];%>
> i get an error msg: Server tags cannot contain <% ... %> constructor.
> If I use it befor to have the <asp:RadioButtonList> tag like,
> <% rbl.SelectedIndex=(string)ds.Fields.Item["BidResponse"]; %> I get a
n
> error:
> Compiler Error Message: CS0246: The type or namespace name 'rbl' could not
> be found (are you missing a using directive or an assembly reference?)
> And besides that the field contains either "Y", "N", "NR" or nulls.
> Anyway thank you for your response.
>
> "Martin Marinov" <memmarinov@.mecrossroad.bg> wrote in message
> news:uT2nsOJTEHA.1732@.TK2MSFTNGP09.phx.gbl...
Y,
> N
statement
want
<asp:listitem
> varibles
> sample,
> daset
> Runat=server>
>
Thank you Martin,
based on your solution I did something that works.
public void rbl_OnItemDataBound(Object Sender, RepeaterItemEventArgs e){
;
if(e.Item.ItemType==ListItemType.Item||e.Item.ItemType==ListItemType.Alterna
tingItem){
RadioButtonList rbl=(RadioButtonList)e.Item.FindControl("rbl");
if(rbl !=null ){
//rbl.SelectedValue=(string)((DataRow)e.Item.DataItem)["BidResponse"];
//this statement issues an error
string bid="";
bid=(string)DataBinder.Eval(e.Item.DataItem,"BidResponse");
if(bid.Equals("Y")){rbl.SelectedIndex=0;}
if(bid.Equals("N")){rbl.SelectedIndex=1;}
if(bid.Equals("NR")){rbl.SelectedIndex=2;}
}}}
"Martin Marinov" <memmarinov@.mecrossroad.bg> wrote in message
news:Ogp3FRUTEHA.3664@.TK2MSFTNGP12.phx.gbl...
> because the radiobuttonlist is a nested control you have to use
> ItemDataBound event of the repeater control
> you can use this :
> <asp:repeater id="rptEstimates" runat="server"
ItemDataBound="DataBoundItem>
> ...
> <script runat="server">
> void DataBoundItem(Object Sender, RepeaterItemEventArgs e) {
> // This event is raised for the header, the footer, separators,
> and items.
> // Execute the following logic for Items and Alternating Items.
> if (e.Item.ItemType == ListItemType.Item || e.Item.ItemType ==
> ListItemType.AlternatingItem) {
> RadioButtonList rbl =
> (RadioButtonList)e.Item.FindControl("rptEstimates");
> if ( rbl != null )
> {
> rbl.SelectedValue =
> (string)((DataRow)e.Item.DataItem)["BidResponse"];
> }
> }
> }
> Regards,
> Martin Marinov
> </script>
> "Emil" <EMiclaus@.binsky.com> wrote in message
> news:uJJrfvJTEHA.3768@.TK2MSFTNGP11.phx.gbl...
not
return
> Y,
> statement
> want
the
> <asp:listitem
>