redirect to the same page without changes in that page
<p>i have a web page with a hyperlink that set target to a _blank page. In that page if i click a button i need to get the text generate in that button to the previous page without changing the details on the previous page. </p>

<p>this is the parent text code.</p>

<pre><code>&lt;asp:TextBox id="txtMatId" runat="server" &gt;&lt;/asp:TextBox&gt;

target _blank page code;
 &lt;asp:GridView id="grdMaterial" runat="server" AllowPaging="True" BackColor="Lime" DataKeyNames="item_Id" AutoGenerateColumns="False" 
                                    BorderColor="Red" OnSelectedIndexChanged="grdMaterial_SelectedIndexChanged"&gt;
                                    &lt;Columns&gt;
&lt;asp:TemplateField&gt;&lt;ItemTemplate&gt;
&lt;asp:LinkButton id="lnkSelect" onclick="lnkSelect_Click" runat="server" __designer:wfdid="w102" PostBackUrl="~/Merchandiser/MNewOrder.aspx"&gt;Select&lt;/asp:LinkButton&gt;
&lt;/ItemTemplate&gt;
&lt;/asp:TemplateField&gt;
&lt;asp:BoundField DataField="item_Id" HeaderText="Item Id"&gt;&lt;/asp:BoundField&gt;
&lt;asp:TemplateField&gt;&lt;ItemTemplate&gt;
&lt;asp:Image id="imgItemImage" runat="server" ImageeUrl='&lt;%# Eval("mat_Image") %&gt;'  &gt;&lt;/asp:Image&gt; 
&lt;/ItemTemplate&gt;
&lt;/asp:TemplateField&gt;
&lt;/Columns&gt;

                                &lt;/asp:GridView&gt;
</code></pre>

<p>want to redirect to the parent page by setting the itemid value to the parent page text field without changing the selected dropdownlist values. </p>
