Expression Syntax: <%$ ... %> New in 2.0
ASP.NET 2.0 adds a new declarative expression syntax for substituting values into a page before the page is parsed. This is useful for substituting connection string values or application settings defined in a Web.config file for server control property values. It can also be used to substitute values from a resource file for locaization. More on connection string and resources expressions and expression handlers can be found in the Performing Data Access, Internationalizing Your Application and Extending ASP.NET sections.
<asp:SqlDataSource ID="SqlDataSource1" ConnectionString='<%$ connectionStrings:Pubs %>'
runat="server" SelectCommand="sp_GetAuthors" />
<asp:Label ID="Label1" Text='<%$ Resources: ExchRate, ConvertLabel %>' runat="server"/>
posted @ 2006-03-27 17:25 Maxer`s Blog 阅读(98) 评论(1)
编辑Object Tag Syntax: <object runat="server" />
Object tags enable page developers to declare and create instances of variables using a declarative, tag-based syntax. The following example demonstrates how the object tag can be used to create an instance of an ArrayList class.
<object id="items" class="System.Collections.ArrayList" runat="server"/>
The object will be created automatically at run time and can then be accessed through the ID "items".
<html>
<script language="C#" runat=server>
void Page_Load(Object sender, EventArgs e) {
ArrayItems.Add("One");
ArrayItems.Add("Two");
ArrayItems.Add("Three");
MyList.DataSource = ArrayItems;
MyList.DataBind();
}
</script>
<body>
<object id="ArrayItems" class="System.Collections.ArrayList" runat=server/>
<asp:datalist id="MyList" runat=server>
<ItemTemplate>
Here is a value: <%# Container.DataItem %>
</ItemTemplate>
</asp:datalist>
</body>
</html>
posted @ 2006-03-27 17:20 Maxer`s Blog 阅读(154) 评论(0)
编辑在ASP.NET 2.0中可以同是调用VB,C#中的类.
By default, the App_Code directory can only contain files of the same language. However, you may partition the App_Code directory into subdirectories (each containing files of the same language) in order to contain multiple languages under the App_Code directory. To do this, you need to register each subdirectory in the Web.config file for the application.
可以在WEB.CONFIG中申明一个用于放置其他语言的子目录.
web.config
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<configuration>
<system.web>
<compilation>
<codeSubDirectories>
<add directoryName="Subdirectory"/> // Your custom dirctionory which to contain the deferenet lanuage class such as vb
</codeSubDirectories>
</compilation>
</system.web>
</configuration>
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customClass.cs
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using System;
public class CustomClass
{
public String GetMessage(String input) {
return "Hello " + input;
}
}
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SubDirectory/customClass.vb
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Imports Microsoft.VisualBasic
Public Class CustomClass2
Public Function GetMessage(ByVal name As String) As String
Return "Hello from VB " & name
End Function
End Class
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page.aspx
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<%@ page language="C#" %>
<script runat="server">
void Button1_Click(object sender, EventArgs e)
{
CustomClass c = new CustomClass();
Label1.Text = c.GetMessage(TextBox1.Text);
CustomClass2 c2 = new CustomClass2();
Label2.Text = c2.GetMessage(TextBox1.Text);
}
</script>
<html>
<head>
<title>ASP.NET Inline Pages</title>
</head>
<body>
<form id="Form1" runat="server">
<h1>Welcome to ASP.NET 2.0!</h1>
<b>Enter Your Name:</b>
<asp:TextBox ID="TextBox1" Runat="server"/>
<asp:Button ID="Button1" Text="Click Me" OnClick="Button1_Click" Runat="server"/>
<br />
<br />
<asp:Label ID="Label1" Runat="server" />
<br />
<asp:Label ID="Label2" Runat="server" />
</form>
</body>
</html>
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posted @ 2006-03-27 16:49 Maxer`s Blog 阅读(113) 评论(1)
编辑