Dropdownlist

[Ana Rita]

Hello to all.

I´m trying to use a string, to build the ListItem's of a
DropDownList.

I declare a Public str as string in the webform1.aspx.vb,
and in the page load I build the string like this:

str = "<asp:ListItem value='0'>Blue</asp:ListItem>
<asp:ListItem value='1'>Red</asp:ListItem>"

In the webform1.aspx, html mode, I call the str within the
tag <asp:DropDownList>, like this <%str%>. As I expected,
it gives an error, saying that I can't use this type of
calls.

I want to Know, if it's possible to do something like we
do in asp to build a select object using a string with the
<options>.

Thank you all.

Best wishes.

Ana Rita

[Patrick Steele [MVP]]

In article <1d****************************@phx.gbl>, ga******@clix.pt
says...

Hello to all.

I´m trying to use a string, to build the ListItem's of a
DropDownList.

I declare a Public str as string in the webform1.aspx.vb,
and in the page load I build the string like this:

str = "<asp:ListItem value='0'>Blue</asp:ListItem>
<asp:ListItem value='1'>Red</asp:ListItem>"

In the webform1.aspx, html mode, I call the str within the
tag <asp:DropDownList>, like this <%str%>. As I expected,
it gives an error, saying that I can't use this type of
calls.

I want to Know, if it's possible to do something like we
do in asp to build a select object using a string with the
<options>.

Your DropDownList should be a server-side control (has the
"runat=server" attribute). If so, you should be able to simply access
the "Items" collection and add to it. Example:

<asp:DropDownList runat="server" id="colorList" />

In code you should be able to do:

colorList.Items.Add("Red")
colorList.Items.Add("Blue")

--
Patrick Steele
Microsoft .NET MVP
http://weblogs.asp.net/psteele