Solved

ASP.NET C# export very large array to excel

Posted on 2016-09-04
9
102 Views
Last Modified: 2016-09-20
Hi,

 I'm using the follwoing code to export large array to Excel file, unfortunately I'm getting the attached error message.

also attached the Code.

How do I fix my code to export the large data to Excel file  

Thanks
Code.jpg
Error-Message.jpg
0
Comment
Question by:Jamil Muammar
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
  • 5
  • 4
9 Comments
 
LVL 63

Expert Comment

by:Fernando Soto
ID: 41783652
In your statement, return File ..., is File a method that you created and if yes please post that method or if it is one provided by .Net please give the full name starting with the namespace. Thanks.
0
 

Author Comment

by:Jamil Muammar
ID: 41783661
Hello ,

protected internal FilePathResult File(string fileName, string contentType);

         //Summary:
        //     Creates a System.Web.Mvc.FileContentResult object by using the file contents,
        //     content type, and the destination file name.
        //
        // Parameters:
        //   fileContents:
        //     The binary content to send to the response.
        //
        //   contentType:
        //     The content type (MIME type).
        //
        //   fileDownloadName:
        //     The file name to use in the file-download dialog box that is displayed in
        //     the browser.
        //
        // Returns:
        //     The file-content result object.
0
 
LVL 63

Expert Comment

by:Fernando Soto
ID: 41783667
Hi Jamil;

In your last post all you posted was the function signature for a function called File which takes two parameters and some comments. If you look at the image below the File function has four parameters so not the correct function that you posted and I am looking for ALL the code in that function so that I can determine why you can not use another larger array.   Your code
0
Instantly Create Instructional Tutorials

Contextual Guidance at the moment of need helps your employees adopt to new software or processes instantly. Boost knowledge retention and employee engagement step-by-step with one easy solution.

 

Author Comment

by:Jamil Muammar
ID: 41783670
Hi,
here is the Function, it contain 3 parameters not 4.

protected internal virtual FileContentResult File(byte[] fileContents, string contentType, string fileDownloadName);
        //
        // Summary:
        //     Creates a System.Web.Mvc.FileStreamResult object using the System.IO.Stream
        //     object, the content type, and the target file name.
        //
        // Parameters:
        //   fileStream:
        //     The stream to send to the response.
        //
        //   contentType:
        //     The content type (MIME type)
        //
        //   fileDownloadName:
        //     The file name to use in the file-download dialog box that is displayed in
        //     the browser.
        //
        // Returns:
        //     The file-stream result object.

Thanks in advanced
0
 
LVL 63

Expert Comment

by:Fernando Soto
ID: 41783671
Where is the CODE?
0
 

Author Comment

by:Jamil Muammar
ID: 41783675
It's Provided by .NET
0
 
LVL 63

Expert Comment

by:Fernando Soto
ID: 41783716
I am unable to find any info on the DeviceManagementAPI method or ExportBackup method so can not verify what type of stream it is returning. I would suggest that you place a breakpoint on the line, stream.Close();, and verify what the variable data contains in it, bytes are integer values between 0 and 255, if it contains other values then that it is an issue?
0
 

Author Comment

by:Jamil Muammar
ID: 41784319
I'm using NPOI.dll, it support Excel 2003 which is limited to 65000 rows

How Do I update or download a new NOPI.dll which is support Excel 2010 ?

Thanks
0
 
LVL 63

Accepted Solution

by:
Fernando Soto earned 500 total points
ID: 41784604
Have you done this, "I would suggest that you place a breakpoint on the line, stream.Close();, and verify what the variable data contains in it, bytes are integer values between 0 and 255, if it contains other values then that it is an issue?"?
0

Featured Post

Free Tool: Subnet Calculator

The subnet calculator helps you design networks by taking an IP address and network mask and returning information such as network, broadcast address, and host range.

One of a set of tools we're offering as a way of saying thank you for being a part of the community.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Excel can be a tricky bit of software to get your head around. Whilst you’ll be able to eventually get to grips with the basic understanding of how to get by, there are a few Excel tips that not everybody will even know about let alone know how to d…
This article describes a serious pitfall that can happen when deleting shapes using VBA.
This Micro Tutorial will demonstrate in Google Sheets how to use the HYPERLINK function to create live links inside your spreadsheet.
This Micro Tutorial demonstrates in Microsoft Excel how to consolidate your marketing data by creating an interactive charts using form controls. This creates cool drop-downs for viewers of your chart to choose from.

710 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question