點擊textbox彈出對話框，返回彈出對話框的值

主要是在父頁面使用 function PopupWindow() {
            window.open(url, "", "status=no,resizable=no,toolbar=no,menubar=no,location=no,scroll=no,Width=600,Height=500");
        }

打開頁面

而後在子頁面調用opener.document得到父頁面的document，而後將子頁面某個控件的值賦給父頁面控件

父頁面

<script type="text/javascript">
      function PopupWindow() {
            window.open("SearchUserWindowModel.aspx", "", "status=no,resizable=no,toolbar=no,menubar=no,location=no,scroll=no,Width=600,Height=500");
        }
</script>

 <asp:TextBox ID="txtParentTextbox" runat="server"></asp:TextBox>
 <input type="button" value="Popup window" onclick="PopupWindow()" />

子頁面

<script type="text/javascript">
        function ReturnValue() {
            if (opener != 'undefined' && opener != null) {
                //opener.document.getElementById("txtParentTextbox").value = document.getElementById("ddlCity").options[document.getElementById("ddlCity").selectedIndex].value;
                opener.document.getElementById("txtParentTextbox").value = document.getElementById("ddlCity").options[document.getElementById("ddlCity").selectedIndex].text;
                window.close();
            }
        }
</script>

     <asp:DropDownList runat="server" ID="ddlCity"></asp:DropDownList>
        <asp:Button runat="server" ID="btnSeach" OnClick="btnSeach_Click" Text="查詢" />
        <input type="button" value="Ok" onclick="ReturnValue();" />