以下代码是实现从客户端删除服务器端的文件的，在单机上(客户端与服务器均为同一电脑)测试没问题，但将其移到服务器上就出错，如何解决？谢谢!
protected void Button3_Click(object sender, EventArgs e)
{
//先找到文件所在路径，然后判断文件存在否，最后删除文件
string Url= "/files/2006年/工地检查通知及通报/07年1月份实情汇报.doc ";
string fileUrl = Server.MapPath( ". ") + Url;
if (File.Exists(fileUrl))
{ File.Delete(fileUrl); } //删除文件
else
{ Response.Write( " <script> alert( '文件不存在! ') </script> "); }
}
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Server Error in '/showbaobiao ' Application.
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Access to the path 'e:\myweb\showbaobiao\files\2006年\工地检查通知及通报\07年1月份实情汇报.doc ' is denied.
Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.
Exception Details: System.UnauthorizedAccessException: Access to the path 'e:\myweb\showbaobiao\files\2006年\工地检查通知及通报\07年1月份实情汇报.doc ' is denied.
ASP.NET is not authorized to access the requested resource. Consider granting access rights to the resource to the ASP.NET request identity. ASP.NET has a base process identity (typically {MACHINE}\ASPNET on IIS 5 or Network Service on IIS 6) that is used if the application is not impersonating. If the application is impersonating via <identity impersonate= "true "/> , the identity will be the anonymous user (typically IUSR_MACHINENAME) or the authenticated request user.
To grant ASP.NET access to a file, right-click the file in Explorer, choose "Properties " and select the Security tab. Click "Add " to add the appropriate user or group. Highlight the ASP.NET account, and check the boxes for the desired access.
Source Error:
Line 224: string fileUrl = Server.MapPath( ". ") + Url;
Line 225: if (File.Exists(fileUrl))