[ { "Id": "414607", "ThreadId": "203952", "Html": "

I've searched for this error, but couldn't find anything relevant.

\r\n

 

\r\n

I'm building a page with some files that when their checkboxes are selected, they'll get zipped in a file.

\r\n

Apparently it's working, but only for the 1st time. I mean, if I load the page again, after the 1st time I try to zip some files, I get the following error:

\r\n

 

\r\n

 

\r\n
The entry name must be non-null and non-empty. 
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: Ionic.Zip.ZipException: The entry name must be non-null and non-empty.

Source Error:
\r\n\r\n\r\n\r\n\r\n\r\n\r\n
\r\n
Line 36:        
Line 37:         Using zip As New ZipFile()
Line 38:             zip.AddFiles(vectorfic, "")
Line 39:                               
Line 40:             zip.Save(Response.OutputStream)
\r\n
\r\n

\r\n\r\nStack Trace: \r\n\r\n\r\n[ZipException: The entry name must be non-null and non-empty.]\r\n   Ionic.Zip.ZipEntry.Create(String filename, String nameInArchive, Boolean isStream, Stream stream) in C:\\dinoch\\dev\\dotnet\\zip\\DotNetZip\\Zip Partial DLL\\ZipEntry.cs:2520\r\n   Ionic.Zip.ZipEntry.Create(String filename, String nameInArchive) in C:\\dinoch\\dev\\dotnet\\zip\\DotNetZip\\Zip Partial DLL\\ZipEntry.cs:2513\r\n   Ionic.Zip.ZipFile.AddFile(String fileName, String directoryPathInArchive) in C:\\dinoch\\dev\\dotnet\\zip\\DotNetZip\\Zip Partial DLL\\ZipFile.cs:2577\r\n   Ionic.Zip.ZipFile.AddFiles(IEnumerable`1 fileNames, Boolean preserveDirHierarchy, String directoryPathInArchive) in C:\\dinoch\\dev\\dotnet\\zip\\DotNetZip\\Zip Partial DLL\\ZipFile.cs:2843\r\n   Ionic.Zip.ZipFile.AddFiles(IEnumerable`1 fileNames, String directoryPathInArchive) in C:\\dinoch\\dev\\dotnet\\zip\\DotNetZip\\Zip Partial DLL\\ZipFile.cs:2772\r\n   ASP._2_aspx.Page_Load(Object sender, EventArgs e) in C:\\Inetpub\\wwwroot\\2.aspx:38\r\n   System.Web.Util.CalliHelper.EventArgFunctionCaller(IntPtr fp, Object o, Object t, EventArgs e) +14\r\n   System.Web.Util.CalliEventHandlerDelegateProxy.Callback(Object sender, EventArgs e) +35\r\n   System.Web.UI.Control.OnLoad(EventArgs e) +99\r\n   System.Web.UI.Control.LoadRecursive() +50\r\n   System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +627\r\n\r\n \r\n
\r\n

 

\r\n

This is my code:

\r\n

 

\r\n

 

\r\n
\r\n
<script language="VB" runat="server">\r\n\r\n\r\n\tSub Page_Load(sender As Object, e As EventArgs)\r\n\t    Dim vectorfic as New System.Collections.Generic.List(Of String)()\r\n        chkbox.Text = ""\r\n\t\tIf Not(Request.Form("multiple") Is Nothing) Then\t\t\r\n            chkbox.Text = Request.Form("multiple")\r\n            'Response.Write(chkbox.Text & "<br>")\t\t\t\t\t\t\r\n        End If\r\n        vectorfic.AddRange(Split(chkbox.Text, ",")\r\n
        Dim archiveName As String = String.Format("archive-{0}.zip", DateTime.Now.ToString("yyyy-MMM-dd-HHmmss"))\r\n        Response.ContentType = "application/zip"\r\n        Response.AddHeader("content-disposition", "filename=" + archiveName)\r\n       \r\n        Using zip As New ZipFile()\r\n            zip.AddFiles(vectorfic, "")                 \r\n            zip.Save(Response.OutputStream)\r\n        End Using\r\n        \r\n    End Sub\r\n\r\n</script>\r\n\r\n<html>\r\n<head>\r\n </head>\r\n<body>\r\n<form runat="server">\r\n\r\n  <h2>Some sample checkbox form elements:</h2>\r\n\r\n\r\n  Multiple HTML Checkboxs With The Same Name:\r\n    <input id="Checkbox1" name="multiple" value="C:\\Inetpub\\wwwroot\\fic1.txt" type="checkbox" />\r\n    <input id="Checkbox2" name="multiple" value="C:\\Inetpub\\wwwroot\\fic2.txt" type="checkbox" />\r\n    <input id="Checkbox3" name="multiple" value="C:\\Inetpub\\wwwroot\\fic3.txt" type="checkbox" />\r\n\r\n  <br />\r\n  <br />\r\n\r\n    <input type="submit" />\r\n<strong><asp:label id="chkbox" runat="server" /></strong>\r\n
\r\n
\r\n

 

\r\n

 

\r\n

Is this because of something not closed, what do you think is missing ?

\r\n

Thanks in advance

\r\n
Source Error:

\r\n\r\n\r\n\r\n\r\n\r\n\r\n
\r\n
Line 36:        
Line 37:         Using zip As New ZipFile()
Line 38:             zip.AddFiles(vectorfic, "")
Line 39:                               
Line 40:             zip.Save(Response.OutputStream)
\r\n
\r\n
", "PostedDate": "2010-03-05T07:14:09.557-08:00", "UserRole": null, "MarkedAsAnswerDate": null }, { "Id": "414843", "ThreadId": "203952", "Html": "

The "non-null and non empty" error means that you're trying to add a file that has either a null value or "" as the filename.

\r\n

Check the value of vectorfic before the call to AddFiles().  I expect that you will find that one of the values in the list is either empty or null.

\r\n

 

", "PostedDate": "2010-03-05T17:26:43.663-08:00", "UserRole": null, "MarkedAsAnswerDate": null } ]