ASP. Net connects server code and special symbols on the front-end interface, and asp.net special symbols

ASP. Net connects server code and special symbols on the front-end interface, and asp.net special symbols

1. <%> used to bind background code

For example:

< %    for(int i=0;i<100;i++)    {        Reaponse.Write(i.ToString());    }%>    

 

 

2. <% # %> is executed when the DataBind () method of the bound control is executed and used for data binding.

For example:

< %# Container.DataItem("title") %>

 

3. <% = %> is used to bind the variables or methods in the background and return values. However, the variable name or method access modifier is protected or public.

For example:

<%=name%> <%=getstr()%>

 

4. <% @ %> is used to import the background namespace

For example, <% @ import namespace = "system. data">

5. <% $ %> is used to bind a string (key-Value Pair) in web. config)

For example:

<asp:TextBox runat="server" ID="cc" Text="<%$ ConnectionStrings:pubs%>"></asp:TextBox>

 

Web. config

<configuration>  <system.web>    <compilation debug="true" targetFramework="4.0" />  </system.web>  <connectionStrings>    <add name="pubs" connectionString="Server=.;database=pubs;uid=sa;pwd=" providerName="System.Data.SqlClient"/>  </connectionStrings></configuration>

 

6. The data obtained by DataBind will be converted to another type by default as String?

DataBinder. eval_r (Container. DataItem, "Conversion Type", "format") Note: The format can not be this method = eval_r ("Conversion Type ")