伙伴关系中使用的<代码>Eval()。 NET?
In my webpages I have references to js and images as such: "../../Content/Images/"Filename" In my code if I reference a file as above, it doesnt work so i have to write: "c:/miscfiles/"filename" 1-...
伙伴关系中使用的<代码>Eval()。 NET?
等值用于与仅为读而设的“国际统一标准”项目(例如:标签或只读的文本箱)挂钩,即“等值”用于一种具有约束力的方式——从一个数据库读到“国际统一标准”领域。
该系统一般用于过时数据(从一开始就不知道),通常受包含整个记录的数据控制中最小部分的约束。 等值方法采用数据领域的名称,并从数据来源的现有记录中检索载有该领域价值的图表。 您可以提供可选择的第二个参数,以具体说明返回方位的形式。 扼制格式参数使用为平级格式方法确定的辛奈。
在对数据进行约束控制的同时,你可以评估数据来源的浏览领域,并发挥电子效应。
例如,你可以在电网格中增加一栏:
<asp:BoundField DataField="YourFieldName" />
换言之,这就是:
<asp:TemplateField>
<ItemTemplate>
<asp:Label ID="lbl" runat="server" Text= <%# Eval("YourFieldName") %> >
</asp:Label>
</ItemTemplate>
</asp:TemplateField>
这似乎很复杂,但具有灵活性,因为你可以把控制权的任何财产设定为电子阀的功能:
<asp:TemplateField>
<ItemTemplate>
<asp:HyperLink ID="HyperLink1" runat="server"
NavigateUrl= <%# "ShowDetails.aspx?id="+Eval("Id") %>
Text= <%# Eval("Text", "{0}") %> ></asp:HyperLink>
</ItemTemplate>
</asp:TemplateField>
爱尔兰酋长没有真正解决这一问题,因此,我认为:
eval()本应用于常年未知的数据。 无论是用户投入(风险)还是其他来源。
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