ASP Dropdown Passing Databound selection value


I have created an ASP dropdown, and used the wizard to bind the data to the list.  Now, I want to pass the result back so that I may use it in the codebehind, but I dont know how to do this.

See my aspx code here:  My Codebehind is attached below.  I need to pass the selection in the "Submit" function.

<asp:DropDownList ID="DropDownList1" runat="server" DataSourceID="SqlDataSource1"
        DataTextField="FullName" DataValueField="Personel_ID" Height="27px"
        Width="218px" AutoPostBack="True"
<asp:ListItem Text="(All)" Value="defaultValue" Selected="true"></asp:ListItem>

    <asp:SqlDataSource ID="SqlDataSource1" runat="server"
protected void submit(object sender, EventArgs e)
            Class1 c1 = new Class1();
            DateTime FromDate= DateTime.Parse(Request.Form[TextBox1.UniqueID]);
            DateTime toDate = DateTime.Parse(Request.Form[TextBox2.UniqueID]);
            IDataReader reader = c1.getData(FromDate, toDate, FullName);
             GridView1.DataSource = reader;

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Pratima PharandeCommented:
On the same page on button event you will get selected values using

Pratima PharandeCommented:
In your casetry like thi s

string str = HttpContext.Current.Request.Form[varDropDownList.UniqueID];


string str = Request.Form[varDropDownList.UniqueID];
Pratima PharandeCommented:
In your casetry like thi s

string str = HttpContext.Current.Request.Form[DropDownList1.UniqueID];


string str = Request.Form[DropDownList1.UniqueID];

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Microsoft SQL Server 2005

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