我正在为我的项目使用
this模板.我在表单和更新面板中使用了updatepanel,我采用了不同的asp.net下拉列表控件.现在的问题是当页面回发后,css样式适用于下拉列表丢失…
因为我没有关于CSS的详细信息..所以请帮助
因为我没有关于CSS的详细信息..所以请帮助
现在有2种可能性
>根本不要将css应用于下拉列表
>在回发后将CSS应用于下拉列表
如果我只是将下拉控件拖放到表单,则下拉列表会显示css.
我也使用了这个的主页…我不想将css应用于下拉列表…该怎么办呢…
请建议我……
页面加载时的图像
回发后的图像(如果使用updatepanel)
.aspx代码
<asp:Content ID="Content2" ContentPlaceHolderID="ContentPlaceHolder1" runat="Server"> <div class="s" runat="server" id="diverror"> <div class="round"> <span> <img alt="" src="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:DropDownList ID="drplstStd" runat="server" AppendDataBoundItems="true" AutopostBack="true" onselectedindexchanged="drplstStd_SelectedindexChanged"> <asp:ListItem Selected="True" Text=" --Select Standard-- " Value="0"></asp:ListItem> </asp:DropDownList> <br /> <asp:DropDownList ID="drplstSem" runat="server"> </asp:DropDownList> <br /> <asp:DropDownList ID="drplstSubj" runat="server" AppendDataBoundItems="true"> <asp:ListItem Selected="True" Text=" --Select Subject-- " Value="0"></asp:ListItem> </asp:DropDownList> <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>
解决方法
您可以在OnInit事件中注册您的CSS
string cssLocalisation = string.Format("<link rel=\"stylesheet\" href=\"{0}\" type=\"text/css\" />",ResolveUrl(YourFile));
protected override void OnInit(EventArgs e)
{
base.OnInit(e);
var scriptManager = ScriptManager.GetCurrent(Page);
if ( ! scriptManager.IsInAsyncPostBack)
{
ScriptManager.RegisterClientScriptBlock(this,typeof(YourControl),"YourKey",cssLocalisation,false);
}
}
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