DotNetZip FileIOPermission - can't add files to zip, though I have rights

Question

I completely fail to get dotnetzip to add files to a .zip file

i can:

using (ZipFile zip = new ZipFile())
      {
zip.AddEntry("test.txt", DateTime.Now.ToString());
zip.Save(Response.OutputStream);
}

This is completed correctly and produces a zip file for download that can be opned with the text file inside

Problem: Trying to add files like this:

 zip.AddFile(Server.MapPath("/Files/test.txt"), "Files");

Always result in something like this:

[SecurityException: Request for the permission of type 'System.Security.Permissions.FileIOPermission, mscorlib, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089' failed.]
   System.Security.CodeAccessSecurityEngine.Check(Object demand, StackCrawlMark& stackMark, Boolean isPermSet) +0
   System.Security.CodeAccessPermission.Demand() +61
   System.IO.File.GetLastWriteTimeUtc(String path) +114
   System.IO.File.GetLastWriteTime(String path) +24
   Ionic.Zip.ZipEntry.Create(String nameInArchive, ZipEntrySource source, Object arg1, Object arg2) in c:\DotNetZip\Zip\ZipEntry.cs:2405
   Ionic.Zip.ZipEntry.CreateFromFile(String filename, String nameInArchive) in c:\DotNetZip\Zip\ZipEntry.cs:2313
   Ionic.Zip.ZipFile.AddFile(String fileName, String directoryPathInArchive) in c:\DotNetZip\Zip\ZipFile.AddUpdate.cs:406
   Ionic.Zip.ZipFile.AddFile(String fileName) in c:\DotNetZip\Zip\ZipFile.AddUpdate.cs:296
   MultiFileDownloader.WebForm1.Button1_Click(Object sender, EventArgs e) in D:\WORK\dynamicweb\StandardModules\MultiFileDownloader\Source\MultiFileDownloader\WebForm1.aspx.cs:54
   System.Web.UI.WebControls.Button.OnClick(EventArgs e) +111
   System.Web.UI.WebControls.Button.RaisePostBackEvent(String eventArgument) +110
   System.Web.UI.WebControls.Button.System.Web.UI.IPostBackEventHandler.RaisePostBackEvent(String eventArgument) +10
   System.Web.UI.Page.RaisePostBackEvent(IPostBackEventHandler sourceControl, String eventArgument) +13
   System.Web.UI.Page.RaisePostBackEvent(NameValueCollection postData) +36
   System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +6785
   System.Web.UI.Page.ProcessRequest(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +242
   System.Web.UI.Page.ProcessRequest() +80
   System.Web.UI.Page.ProcessRequestWithNoAssert(HttpContext context) +21
   System.Web.UI.Page.ProcessRequest(HttpContext context) +49
   ASP.webform1_aspx.ProcessRequest(HttpContext context) in c:\Windows\Microsoft.NET\Framework\v2.0.50727\Temporary ASP.NET Files\root\ade7bc1a\c2b11481\App_Web_txhzteca.0.cs:0
   System.Web.CallHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute() +181
   System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously) +75

Note: My code can read/create the files with no problem. IIS user (and everyone infact) have total permissions to the files in question. IIS 7.5, win2008r2

How can I grant the DotNetZip assembly the same rights?

score 1 · Accepted Answer · answered Apr 26 '12 at 21:11

1

Figured it out my self:

On application pool I set the Load User profile to true....problem solved. Guess the assembly was running without any user at all (not everyone, not anomnynous, not no one)

answered Apr 26 '12 at 21:11

Steen

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DotNetZip FileIOPermission - can't add files to zip, though I have rights

1 Answers1