Best way to check if a drop down list contains a value?

Question

When the user navigates to a new page, this ddl\'s selected index is determined by a cookie, but if the ddl doesn\'t contain that cookie\'s value, then I\'d like it to be se

Answer 1

You could try checking to see if this method returns a null:

if (ddlCustomerNumber.Items.FindByText(GetCustomerNumberCookie().ToString()) != null)
    ddlCustomerNumber.SelectedIndex = 0;

Answer 2

ListItem item = ddlComputedliat1.Items.FindByText("Amt D");
if (item == null) {
    ddlComputedliat1.Items.Insert(1, lblnewamountamt.Text);
}

Answer 3

If the function return Nothing, you can try this below

if (ddlCustomerNumber.Items.FindByText(
    GetCustomerNumberCookie().ToString()) != Nothing)
{
...
}

Answer 4

That will return an item. Simply change to:

if (ddlCustomerNumber.Items.FindByText( GetCustomerNumberCookie().ToString()) != null)
    ddlCustomerNumber.SelectedIndex = 0;