How to make this DropDownList works inside the GridView?
<p>I have two tables in my database as following:</p>

<p>Suggestions Table: ID, Title, Description, StatusID... etc</p>

<p>SuggestionsStatus Table: ID, Status</p>

<p>I am using GridView to show the Suggestions and in the last column I put a DropDownList that for selecting the status for each Suggestion. Now, when I tried to show the Status in the DropDownList, I got the following error and I don't know why:</p>

<blockquote>
  <p>An object reference is required for the non-static field, method, or
  property 'System.Web.UI.WebControls.ListControl.Items.get'</p>
</blockquote>

<p>My ASP.NET code:</p>

<pre><code>&lt;asp:GridView ID="GridView1" runat="server" AllowPaging="True" 
                        AllowSorting="True" AutoGenerateColumns="False" DataKeyNames="ID" 
                        width="950px" CssClass="mGrid"
                        AlternatingRowStyle-CssClass="alt" 
                        RowStyle-HorizontalAlign="Center" 
                        DataSourceID="SqlDataSource1" 
                        OnRowDataBound="GridView1_RowDataBound" &gt;
            &lt;AlternatingRowStyle BackColor="White" ForeColor="#284775" /&gt;
            &lt;HeaderStyle Font-Bold = "true" ForeColor="Black" Height="20px"/&gt; 
            &lt;Columns&gt;
                &lt;asp:BoundField DataField="ID" HeaderText="ID" InsertVisible="False" 
                    ReadOnly="True" SortExpression="ID" /&gt;
                &lt;asp:BoundField DataField="Title" HeaderText="Title" SortExpression="Title" /&gt;
                &lt;asp:BoundField DataField="Description" HeaderText="Description" 
                    SortExpression="Description" /&gt;
                &lt;asp:BoundField DataField="Name" HeaderText="Name" SortExpression="Name" /&gt;
                &lt;asp:BoundField DataField="Username" HeaderText="Username" 
                    SortExpression="Username" /&gt;
                &lt;asp:BoundField DataField="DivisionShortcut" HeaderText="Division" 
                    SortExpression="DivisionShortcut" /&gt;
                &lt;asp:TemplateField HeaderText="Status"&gt;
                    &lt;ItemTemplate&gt;
                        &lt;asp:DropDownList ID="DropDownList" runat="server" DataSourceID="SqlDataSource2"
                                          Font-Bold="True" ForeColor="#006666" AppendDataBoundItems="false" 
                                          DataTextField="Status" DataValueField="ID" AutoPostBack="true" 
                                          OnDataBound="DropDownList_DataBound"&gt;
                        &lt;/asp:DropDownList&gt;
                    &lt;/ItemTemplate&gt;
                &lt;/asp:TemplateField&gt;
            &lt;/Columns&gt;
        &lt;/asp:GridView&gt;
        &lt;asp:SqlDataSource ID="SqlDataSource1" runat="server" 
            ConnectionString="&lt;%$ ConnectionStrings:testConnectionString %&gt;" 
            SelectCommand="SELECT     dbo.SafetySuggestionsLog.ID, dbo.SafetySuggestionsLog.Title, dbo.SafetySuggestionsLog.Description, dbo.employee.Name, dbo.SafetySuggestionsLog.Username, 
                      dbo.Divisions.DivisionShortcut
FROM         dbo.employee INNER JOIN
                      dbo.SafetySuggestionsLog ON dbo.employee.Username = dbo.SafetySuggestionsLog.Username INNER JOIN
                      dbo.Divisions ON dbo.employee.DivisionCode = dbo.Divisions.SapCode"
                      FilterExpression="[DivisionShortcut] like '{0}%'"&gt;

                      &lt;FilterParameters&gt;
                        &lt;asp:ControlParameter ControlID="ddlDivision" Name="DivisionShortcut" 
                                                 PropertyName="SelectedValue" Type="String" /&gt;
                    &lt;/FilterParameters&gt;
        &lt;/asp:SqlDataSource&gt;

        &lt;%--For the DropDownList--%&gt;
        &lt;asp:SqlDataSource ID="SqlDataSource2" runat="server"
        ConnectionString="&lt;%$ ConnectionStrings:testConnectionString %&gt;" 
        SelectCommand="SELECT * FROM [SafetySuggestionsStatus]"&gt;&lt;/asp:SqlDataSource&gt;
</code></pre>

<p>My Code-Behind:</p>

<pre><code>protected void Page_Load(object sender, EventArgs e)
    {

    }

    int i = 1;
    protected void GridView1_RowDataBound(object sender, GridViewRowEventArgs e)
    {
        if (e.Row.RowType == DataControlRowType.DataRow)
        {
            e.Row.Cells[0].Text = i.ToString();
            i++;
        }

    }

    protected void DropDownList_DataBound(object sender, EventArgs e)
    {

        if (!IsPostBack)
        {
            DropDownList.Items.Insert(0, new ListItem("--Select--", ""));
        }
    }
</code></pre>

<p><strong>So how I can fix this problem?</strong></p>
