1.Session["key"]=value;
value =Session["key"];
2.Cookie["key"] = value;
value = Cookie["key"];
3.Application["key"] = value;
value = Application["key"];
4. ..aspx?id=2&name=chen&type=s
value = Request.QueryString["id"];
Response.Redirect()方式
Server.Transfer()方式
程序中常见的方式:
以查询数据页面为例:
在查询页面中设置如下公有属性(QueryPage.aspx):
public class QueryPage : System.Web.UI.Page
{
protected System.Web.UI.WebControls.TextBox txtStaDate;
protected System.Web.UI.WebControls.TextBox txtEndDate;
///
/// 开始时间
///
public string StaDate
{
get{ return this.txtStaDate.Text;}
set{this.txtStaDate.Text = value;}
}
///
/// 结束时间
///
public string EndDate
{
get{ return this.txtEndDate.Text;}
set{this.txtEndDate.Text = value;}
}
.
private void btnEnter_Click(object sender, System.EventArgs e)
{
Server.Transfer("ResultPage.aspx");
}
}
在显示查询结果页面(ResultPage.aspx):
public class ResultPage : System.Web.UI.Page
{
private void Page_Load(object sender, System.EventArgs e)
{
//转换一下即可获得前一页面中输入的数据
QueryPage queryPage = ( QueryPage )Context.Handler;
Response.Write( "StaDate:" );
Response.Write( queryPage.StaDate );
Response.Write( "
EndDate:" );
Response.Write( queryPage.EndDate );
}
}
如果有许多查询页面共用一个结果页面的设置方法:
在这种方式中关键在于“ QueryPage queryPage = ( QueryPage )Context.Handler; ”的转换,只有转换不依赖于特定的页面时即可实现。
如果让所有的查询页面都继承一个接口,在该接口中定义一个方法,该方法的唯一作用就是让结果页面获得构建结果时所需的参数,就可实现多页面共享一个结果页面操作!
先定义一个类,用该类放置所有查询参数:
///
/// 结果页面中要用到的值
///
public class QueryParams
{
private string staDate;
private string endDate;
///
/// 开始时间
///
public string StaDate
{
get{ return this.staDate;}
set{this.staDate = value;}
}
///
/// 结束时间
///
public string EndDate
{
get{ return this.endDate;}
set{this.endDate = value;}
}
}
接口定义:
///
/// 定义查询接口。
///
public interface IQueryParams
{
///
/// 参数
///
QueryParams Parameters{get;}
}
查询页面继承IQueryParams接口(QueryPage.aspx):
///
///查询页面,继承接口
///
public class QueryPage : System.Web.UI.Page, IQueryParams
{
protected System.Web.UI.WebControls.TextBox txtStaDate;
protected System.Web.UI.WebControls.TextBox txtEndDate;
private QueryParams queryParams;
///
/// 结果页面用到的参数
///
public QueryParams Parameters
{
get
{
return queryParams;
}
}
.
private void btnEnter_Click(object sender, System.EventArgs e)
{
//赋值
queryParams = new QueryParams();
queryParams.StaDate = this.txtStaDate.Text;
queryParams.EndDate = this.txtEndDate.Text
Server.Transfer("ResultPage.aspx");
}
}
接收页面(ResultPage.aspx):
public class ResultPage : System.Web.UI.Page
{
private void Page_Load(object sender, System.EventArgs e)
{
QueryParams queryParams = new QueryParams();
IQueryParams queryInterface;
//实现该接口的页面
if( Context.Handler is IQueryParams)
{
queryInterface = ( IQueryParams )Context.Handler;
queryParams = queryInterface.Parameters;
}
Response.Write( "StaDate:" );
Response.Write( queryParams.StaDate );
Response.Write( "
EndDate:" );
Response.Write( queryParams.EndDate );
}
}