change the value of one dynamically created dropdownlist by selecting the value of other list

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DropDownList

Hello sir,
I have the following code.
I have two dropdownlists, ddlNoOfQuestions and ddlCorrectOption and a button.

In my (.aspx) page I have the following code for ddlNoOfQuestion.
<asp:DropDownList ID="ddlNoOfQuestions" runat="server" Width="70px"
AutoPostBack="true">
<asp:ListItem>Select
<asp:ListItem>1
<asp:ListItem>2
<asp:ListItem>3
<asp:ListItem>4
<asp:ListItem>5
<asp:ListItem>6


and for ddlCorrectOption its is like
<asp:DropDownList ID="ddlCorrectOption" runat="server" Width="50px" Height="16px">

now what i wanted to do is when click on ddlNoOfQuestion it should add the number of textboxes dynamically which I select from the ddlNoOfQuestion. e.g. when i select 4 from the ddlNoOfQuestion it should add 4 textboxes and also it should add values from 1 to 4 into the another dropdownlist (ddlCorrectOption ) please help me in this.
thanks in advance. Confused | :confused: