Unbind a DataSource and clear a DropDownList selection

[Gaetan]

on a test web page, I have two DropDownList fields. The data source for the second DDL field depends
on the value selected in the first DDL.

I want a Reset button that will re-initialize the DDL fields to their initial values. My problem is
that the second DDL cannot be re-initialized to a null/empty state. I do not want to see any data in
thesecond DDL field.

The following code worked in .Net 1.1

ddlField2.DataSource = string.empty;
ddlfield2.DataBind();
ddlFields2.SelectedIndex = 0;

However in .Net 2.0, that same code generates an ArgumentOutofRange expeption the second time the
above code is executed.

Is it possible to unbind a DDL field and have ASP.Net to clear the field on the web page?

Regards,

Gaetan

 

[drgbg]

Unbind DDL

Try this:

For VB:

ddlField2.DataSource = Nothing
ddlfield2.DataBind()

I'm not familiar with C# but I would guess it would be something like this:

ddlField2.DataSource = null;
ddlfield2.DataBind();