asp.net application static静态变量用法

asp教程.net application static静态变量用法

File: Global.asax

private static string[] fileList;
public static string[] FileList
{
get
{
if (fileList == null)
{
fileList = Directory.GetFiles(HttpContext.Current.Request.PhysicalApplicationPath);
}
return fileList;
}
}

private static Dictionary metadata = new Dictionary();
public void AddMetadata(string key, string value)
{
lock (metadata)
{
metadata[key] = value;
}
}
public string GetMetadata(string key)
{
lock (metadata)
{
return metadata[key];
}
}

File: Default.aspx

File: Default.aspx.cs

using System;
using System.Data;
using System.Configuration;
using System.Collections;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
using System.Text;
using ASP;

public partial class StaticApplicationVariables : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
StringBuilder builder = new StringBuilder();
foreach (string file in Global.FileList)
{
builder.Append(file + "
");
}
lblInfo.Text = builder.ToString();
}
}