I am using this template for my project. I have used updatepanel in the form and inside the update panel I have taken different dropdownlist control of asp.net. Now the issue is when the page get post back the css style apply to the dropdown gets lost...As I have no detail idea about the CSS.. So please helpNow there are 2 possibilityNot to apply css to the dropdown at allapply CSS to the dropdown after postbackIf i simply drag and drop the dropdown control to the form the dropdown appears with the css.I also used masterpage of this...I don't want to apply css to the dropdown... what to do then..Please suggest me...Image when page loadsImage after postback( if updatepanel is used).aspx code<asp:Content ID="Content2" ContentPlaceHolderID="ContentPlaceHolder1" runat="Server"> <div class="s" runat="server" id="divError"> <div class="round"> <span> <img alt="" src="http://stackoverflow.com/questions/15494731/img/Error.png" /> </span><span runat="server" id="lblError"></span> </div> </div> <asp:UpdatePanel ID="UpdatePanel1" runat="server" UpdateMode="Conditional" RenderMode="Inline"> <Triggers> <asp:AsyncPostBackTrigger ControlID="drplstStd" /> </Triggers> <ContentTemplate> <div class="actions"> <div class="left"> <asp:Button ID="btnBack" runat="server" Text="Add new" Height="25px" OnClick="btnBack_Click" /> <br /> <br /> <br /> <asp
ropDownList ID="drplstStd" runat="server" AppendDataBoundItems="true" AutoPostBack="true" onselectedindexchanged="drplstStd_SelectedIndexChanged"> <asp:ListItem Selected="True" Text=" --Select Standard-- " Value="http://stackoverflow.com/questions/15494731/0"></asp:ListItem> </aspropDownList> <br /> <aspropDownList ID="drplstSem" runat="server"> </aspropDownList> <br /> <aspropDownList ID="drplstSubj" runat="server" AppendDataBoundItems="true"> <asp:ListItem Selected="True" Text=" --Select Subject-- " Value="http://stackoverflow.com/questions/15494731/0"></asp:ListItem> </aspropDownList> <asp:TextBox ID="txtChapterSearch" runat="server"></asp:TextBox> <asp:Button ID="btnSearch" runat="server" Text="Search" Height="25px" OnClick="btnSearch_Click" /> </div> </div> <fieldset> <legend>Chapter details </legend> <asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="False" OnRowCommand="GridView1_RowCommand" AllowPaging="True" OnPageIndexChanging="GridView1_PageIndexChanging" PageSize="10" CssClass="grid" CellPadding="3" BorderColor="#CCCCCC" BorderWidth="1px" BackColor="White" BorderStyle="None"> <RowStyle BackColor="#F6F6F6" ForeColor="#333333" /> <Columns> <asp:TemplateField HeaderText="Id" Visible="False"> <ItemTemplate> <asp:Label ID="Label1" runat="server" Text='<%# Bind("ChapterID") %>'></asp:Label> </ItemTemplate> <HeaderStyle Width="30px" /> </asp:TemplateField> <asp:TemplateField HeaderText="Standard"> <ItemTemplate> <asp:Label ID="Label2" runat="server" Text='<%# Bind("Standard") %>'></asp:Label> </ItemTemplate> <HeaderStyle Height="50px" /> <ItemStyle Height="25px" /> </asp:TemplateField> <asp:TemplateField HeaderText="Semester"> <ItemTemplate> <asp:Label ID="Label3" runat="server" Text='<%# Bind("Semester") %>'></asp:Label> </ItemTemplate> </asp:TemplateField> <asp:TemplateField HeaderText="Subject"> <ItemTemplate> <asp:Label ID="Label4" runat="server" Text='<%# Bind("Subject") %>'></asp:Label> </ItemTemplate> </asp:TemplateField> <asp:TemplateField HeaderText="Chapter"> <ItemTemplate> <asp:Label ID="Label5" runat="server" Text='<%# Bind("ChapterName") %>'></asp:Label> </ItemTemplate> </asp:TemplateField> <asp:TemplateField HeaderText="ShortForm"> <ItemTemplate> <asp:Label ID="Label6" runat="server" Text='<%# Bind("ChapterSName") %>'></asp:Label> </ItemTemplate> </asp:TemplateField> <asp:TemplateField ShowHeader="False"> <ItemTemplate> <asp:LinkButton ID="LinkButton1" runat="server" CausesValidation="False" CommandArgument='<%#((GridViewRow)Container).RowIndex%>' Text="Edit" CommandName="EditDetails"></asp:LinkButton> </ItemTemplate> <ItemStyle Width="100" /> </asp:TemplateField> <asp:TemplateField ShowHeader="False"> <ItemTemplate> <asp:LinkButton ID="LinkButton2" runat="server" CausesValidation="False" CommandArgument='<%#((GridViewRow)Container).RowIndex%>' Text="Delete" CommandName="DeleteDetails" OnClientClick="if (!window.confirm('Are you sure you want to delete this item?')) return false;"></asp:LinkButton> </ItemTemplate> <ItemStyle Width="100" /> </asp:TemplateField> </Columns> <FooterStyle BackColor="#5D7B9D" Font-Bold="True" ForeColor="White" /> <PagerStyle CssClass="rowheader" HorizontalAlign="Center" /> <SelectedRowStyle BackColor="#E2DED6" Font-Bold="True" ForeColor="#333333" /> <HeaderStyle CssClass="rowheader" /> <EditRowStyle BackColor="#999999" /> <AlternatingRowStyle BackColor="#FDFDFD" ForeColor="#284775" /> </asp:GridView> <legend> <asp:ImageButton ID="btnDisplay" runat="server" ImageUrl="~/Admin/img/view_refresh.png" Height="16px" Width="16px" OnClick="btnDisplay_Click" /> <asp:Label ID="lblDisplay" runat="server" Text="Label"></asp:Label> </legend> </fieldset> </ContentTemplate> </asp:UpdatePanel></asp:Content>
ropDownList ID="drplstStd" runat="server" AppendDataBoundItems="true" AutoPostBack="true" onselectedindexchanged="drplstStd_SelectedIndexChanged"> <asp:ListItem Selected="True" Text=" --Select Standard-- " Value="http://stackoverflow.com/questions/15494731/0"></asp:ListItem> </aspropDownList> <br /> <aspropDownList ID="drplstSem" runat="server"> </aspropDownList> <br /> <aspropDownList ID="drplstSubj" runat="server" AppendDataBoundItems="true"> <asp:ListItem Selected="True" Text=" --Select Subject-- " Value="http://stackoverflow.com/questions/15494731/0"></asp:ListItem> </aspropDownList> <asp:TextBox ID="txtChapterSearch" runat="server"></asp:TextBox> <asp:Button ID="btnSearch" runat="server" Text="Search" Height="25px" OnClick="btnSearch_Click" /> </div> </div> <fieldset> <legend>Chapter details </legend> <asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="False" OnRowCommand="GridView1_RowCommand" AllowPaging="True" OnPageIndexChanging="GridView1_PageIndexChanging" PageSize="10" CssClass="grid" CellPadding="3" BorderColor="#CCCCCC" BorderWidth="1px" BackColor="White" BorderStyle="None"> <RowStyle BackColor="#F6F6F6" ForeColor="#333333" /> <Columns> <asp:TemplateField HeaderText="Id" Visible="False"> <ItemTemplate> <asp:Label ID="Label1" runat="server" Text='<%# Bind("ChapterID") %>'></asp:Label> </ItemTemplate> <HeaderStyle Width="30px" /> </asp:TemplateField> <asp:TemplateField HeaderText="Standard"> <ItemTemplate> <asp:Label ID="Label2" runat="server" Text='<%# Bind("Standard") %>'></asp:Label> </ItemTemplate> <HeaderStyle Height="50px" /> <ItemStyle Height="25px" /> </asp:TemplateField> <asp:TemplateField HeaderText="Semester"> <ItemTemplate> <asp:Label ID="Label3" runat="server" Text='<%# Bind("Semester") %>'></asp:Label> </ItemTemplate> </asp:TemplateField> <asp:TemplateField HeaderText="Subject"> <ItemTemplate> <asp:Label ID="Label4" runat="server" Text='<%# Bind("Subject") %>'></asp:Label> </ItemTemplate> </asp:TemplateField> <asp:TemplateField HeaderText="Chapter"> <ItemTemplate> <asp:Label ID="Label5" runat="server" Text='<%# Bind("ChapterName") %>'></asp:Label> </ItemTemplate> </asp:TemplateField> <asp:TemplateField HeaderText="ShortForm"> <ItemTemplate> <asp:Label ID="Label6" runat="server" Text='<%# Bind("ChapterSName") %>'></asp:Label> </ItemTemplate> </asp:TemplateField> <asp:TemplateField ShowHeader="False"> <ItemTemplate> <asp:LinkButton ID="LinkButton1" runat="server" CausesValidation="False" CommandArgument='<%#((GridViewRow)Container).RowIndex%>' Text="Edit" CommandName="EditDetails"></asp:LinkButton> </ItemTemplate> <ItemStyle Width="100" /> </asp:TemplateField> <asp:TemplateField ShowHeader="False"> <ItemTemplate> <asp:LinkButton ID="LinkButton2" runat="server" CausesValidation="False" CommandArgument='<%#((GridViewRow)Container).RowIndex%>' Text="Delete" CommandName="DeleteDetails" OnClientClick="if (!window.confirm('Are you sure you want to delete this item?')) return false;"></asp:LinkButton> </ItemTemplate> <ItemStyle Width="100" /> </asp:TemplateField> </Columns> <FooterStyle BackColor="#5D7B9D" Font-Bold="True" ForeColor="White" /> <PagerStyle CssClass="rowheader" HorizontalAlign="Center" /> <SelectedRowStyle BackColor="#E2DED6" Font-Bold="True" ForeColor="#333333" /> <HeaderStyle CssClass="rowheader" /> <EditRowStyle BackColor="#999999" /> <AlternatingRowStyle BackColor="#FDFDFD" ForeColor="#284775" /> </asp:GridView> <legend> <asp:ImageButton ID="btnDisplay" runat="server" ImageUrl="~/Admin/img/view_refresh.png" Height="16px" Width="16px" OnClick="btnDisplay_Click" /> <asp:Label ID="lblDisplay" runat="server" Text="Label"></asp:Label> </legend> </fieldset> </ContentTemplate> </asp:UpdatePanel></asp:Content>