Sorting an array

**hpl** · Jan 8th, 2003, 03:53 AM

I have a quit simple question. I have to drpdwnlsts, I wish to sort the content of drp2 by the way I choose in 1.
My code is:

Code:

<%@ Page Language="vb" %>
<script runat="server">

    
    public Sub Page_Load()
      if not page.isPostback then
        Dim AnimalArray(4) As String
        Dim strAnimal As String
        AnimalArray(0) = "Dog"
        AnimalArray(1) = "Cat"
        AnimalArray(2) = "Elephant"
        AnimalArray(3) = "Lion"
        AnimalArray(4) = "Cat"
    
        Dim SortArray(2) As String
        Dim strSort As String
        SortArray(0) = "Reverse"
        SortArray(1) = "Forward"
        SortArray(2) = "Alphabethical" 
        
        For Each strAnimal In AnimalArray
            MyDropDownList.Items.Add(strAnimal)
        Next
        
        For Each strSort In SortArray
            MyDropDownList2.Items.Add(strSort)
        Next
      end if  
    End Sub
    
    public Sub SortAnimal(sender As Object, E As Eventargs)
       
            Dim SortVal as string
            sortval = MydropDownList2.selectedItem.Value
            if sortval = "Reverse" then
                'array.reverse(animalArray)
            end if
       
    end sub

</script>
<html>
<head>
    <form id="Form1" method="post" runat="server">
        <asp:dropdownlist id="MyDropDownList2" OnSelectedIndexChanged="sortAnimal" AutoPostBack="true" runat="server"></asp:dropdownlist>
        <asp:dropdownlist id="MyDropDownList" runat="server"></asp:dropdownlist>
    </form>
</head>
<body>
</body>
</html>

**ChrisWise** · Jan 13th, 2003, 09:15 AM

Hi,

Why not use instead of a string array the arraylist?

that way sorting is much easier:

Alphabetically:

arranimals.Sort()

Reverse:

arranimals.Reverse()

Im not sure what you mean by "Forward"

Hope it helps

Chris

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