在刚刚完成的一个系统中,(基于asp.net)要求系统提供多风格,用户可自由选择系统风格.我们通过采用css样式文件替换,简单有效地实现了该项功能.实现步骤如下:
1.定义css样式文件,可命名为style_blue.css等:
2.在每个程序页面(*.aspx)设置相应的css中Class
3.用户登陆时取出其设置的风格(值为css文件名,如style_blue)利用Session保存
4.进到特定页面,从Session取出css风格,在文件头加载相应的css文件(如style_blue.css)
当然,如果需要多种风格就要预制多个css文件.
同那种把页面元素的颜色值写在数据库里,然后再读出来的做法相比较,
优点:
工作量少\不需要与数据库多次打交道(仅进入系统时候读取用户设置的css文件名)
缺点:不能由用户自由设置页面元素的风格.,但由用户自己设置页面元素要求用户有一定的美学基础,此缺点在应用系统中一般可不计.
附录一:css样式文件
A:link,A:active,A:visited{TEXT-DECORATION:none ;Color:#000000}
A:hover{TEXT-DECORATION: underline;Color:#4455aa}.
SelectedItem
{
background-color:#8AC8DF;
}
BODY
{
font-family:verdana,sans-serif;FONT-SIZE: 9pt;BACKGROUND-COLOR: #F6f6f6;
Scrollbar-face-color: #DEE3E7;
Scrollbar-highlight-color: #FFFFFF;
Scrollbar-shadow-color: #DEE3E7;
Scrollbar-3dlight-color: #D1D7DC;
Scrollbar-arrow-color: #006699;
Scrollbar-track-color: #EFEFEF;
Scrollbar-darkshadow-color: #98AAB1;
}
.table_table
{
font-family:verdana,sans-serif;
FONT-SIZE:9pt;
BACKGROUND-COLOR:#4682b4
}
.table_head
{
font-family:verdana,sans-serif;
FONT-SIZE: 10pt;
BACKGROUND-COLOR: #C1D0E1;
COLOR:#ffffff;
background-image: url(blue.gif);
}
.table_strong
{
font-family:verdana,sans-serif;
FONT-SIZE: 9pt;
BACKGROUND-COLOR: #4682b4;
COLOR:#ffffff;
font-weight:bold;
}
.table_trline
{
font-family:verdana,sans-serif;
FONT-SIZE: 9pt;
BACKGROUND-COLOR: #C1D0E1;
HEIGHT:19pt;
TEXT-ALIGN:CENTER;
COLOR:#ffffff;
font-weight:bold;
}
tr
{
font-family:宋体;
FONT-SIZE: 9pt;
BACKGROUND-COLOR: #F8F8F3;
TEXT-ALIGN:CENTER
}
.t{LINE-HEIGHT: 1.4}
DIV
{
font-family:verdana,sans-serif;
FONT-SIZE: 9pt;
}
FORM{font-family:verdana,sans-serif; FONT-SIZE: 8pt}
INPUT{FONT-SIZE: 9pt; COLOR: #000080; BACKGROUND-COLOR: #EFEFEF}
INPUT.buttonface {FONT-SIZE: 9pt; COLOR: #000080; BACKGROUND-COLOR: #d2e9ff}
INPUT.dialogbotton {FONT-SIZE: 9pt; COLOR: rgb(0,0,128); BACKGROUND-COLOR: rgb(255,204,51)}
.submit{FONT-SIZE: 9pt; COLOR: #000080; BACKGROUND-COLOR: #d2e9ff}
textarea {border-width: 1; border-color: #000000; background-color: #efefef; font-family: 宋体; font-size: 9pt;}
select {border-width: 1; border-color: #000000; background-color: #FFFFFF; font-family: 宋体; font-size: 9pt; }
OPTION{FONT-FAMILY: 宋体; FONT-SIZE: 9pt;background-color: #efefef}.Menu_Button
{
BORDER-BOTTOM: #1864AE 1px solid;
BORDER-LEFT:rgb(233,244,249) 0px solid;
BORDER-RIGHT: #1864AE 1px solid;
BORDER-TOP: #0051E7 0px solid;
CURSOR: hand;
BACKGROUND-COLOR:#4682b4;
}
.Menu
{
font-size:9pt;
BACKGROUND-COLOR:#74A3C9;
}
.navPoint {
CURSOR: hand; COLOR:white; FONT-FAMILY: Webdings;background-color:#4682b4;
}
P{font-family:verdana,sans-serif; FONT-SIZE: 9pt}
BR{font-family:verdana,sans-serif; FONT-SIZE: 9pt}
附录二:在*.aspx页面中DataGrid设置css中的class
<asp:DataGrid id="dgrdnet" runat="server" class="table_table" Width="100%" EnableViewState="False"
AutoGenerateColumns="False" CellPadding="1" CellSpacing="1" CssClass="table_table" BorderWidth="0px">
<AlternatingItemStyle HorizontalAlign="Left" VerticalAlign="Middle"></AlternatingItemStyle>
<ItemStyle HorizontalAlign="Left" Height="30px"></ItemStyle>
<HeaderStyle Height="24px" CssClass="table_head"></HeaderStyle>
<Columns>
<asp:BoundColumn DataField="RFQ_NUMBER" HeaderText="Rfq"></asp:BoundColumn>
<asp:BoundColumn DataField="item_code" HeaderText="ItemCode"></asp:BoundColumn>
<asp:TemplateColumn HeaderText="ItemDesc">
<ItemTemplate>
<asp:textbox runat="server" Text='<%# DataBinder.Eval(Container, "DataItem.item_desc") %>' >
</asp:textbox>
</ItemTemplate>
<EditItemTemplate>
<asp:TextBox runat="server" Text='<%# DataBinder.Eval(Container, "DataItem.item_desc") %>'>
</asp:TextBox>
</EditItemTemplate>
</Columns>
</asp:DataGrid>
附录三:加载css文件处理代码(c#):
protected override void Render(HtmlTextWriter writer)
{
//输出Header的HTML
writer.WriteLine("<!DOCTYPE HTML PUBLIC \"-//W3C//DTD HTML 4.0 Transitional//EN\" >");
writer.WriteLine("<html>");
writer.WriteLine("<head>");
writer.WriteLine("<title>{0}</title>",Title == null ? "Page":Title);
writer.WriteLine("<META http-equiv='Content-Type' content=\"text/html; charset=gb2312\">");
writer.WriteLine("<META content=\"Huawei RQS\" name='keywords'>");
if(UserInfo!=null)
writer.WriteLine("<link href=\"{0}/style_" + UserInfo.Style + ".css\" type='text/css' rel='stylesheet'>",CssPath);
else
writer.WriteLine("<link href=\"{0}/style_" + pageStyle.ToString() + ".css\" type='text/css' rel='stylesheet'>",CssPath);
for(int idx=0;idx<styles.Count;idx++)
writer.WriteLine("<link href=\"{0}/{1}\" type='text/css' rel='STYLESHEET'>",CssPath,styles[idx]);
for(int idx=0;idx<scripts.Count;++idx)
writer.WriteLine("<script language=\"JavaScript\" src='" + ScriptsPath + "/{0}'></script>",this.scripts[idx]);
writer.WriteLine("</head>");
if(OnBodyRender!=null) OnBodyRender(this,EventArgs.Empty);
base.Render (writer);
writer.WriteLine("</html>");
}
