DropDownList Question

[Will Lastname]

My application has a series of dropdownlists with AutoPostBack set to
True and IndexChanged handlers as well. All of the dropdownlists are
bound and dynamically populated.

Is there a way to manually add an entry to a dropdownlist that is
bound? The reason I ask is because if the first item is the one the
user wants to select it is not able to postback since it is already
selected.

 

[Guest]

Hi Will,

You could just add a new item into the underlying data source.

For example, if you are using a datatable as the datasource, add a new row
to it with the topmost value to display, and then bind to the drop down.

You could also set up client side scripts so that a client-side validation
would ensure the user has made a valid selection.

Does this help?

 

[darrel]

Is there a way to manually add an entry to a dropdownlist that is

bound?

Yes.

DropDownListNavigation.DataBind()
DropDownListNavigation.Items.Insert(0, New ListItem("Pick An Option",
"null"))

-Darrel

 

[Will Lastname]

Thanks to both of you. I am sorry to say that I am still getting an
error stating that I can't modify this list when a datasource property
is set. Thanks anyway!

 

[darrel]

Thanks to both of you. I am sorry to say that I am still getting an

error stating that I can't modify this list when a datasource property
is set. Thanks anyway!

Did you use the code example I showed you? That seems to work fine in my
application. What is the exact error you get?

-Darrel