An object reference is required for the non-static field, method, or property 'parent.FileUpload2

Question

2.33/5 (2 votes)

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C#

[WebMethod]
public static string btnSubmit_Click()
{
    Thread.Sleep(3000);
    //upload your file here
    if (FileUpload2.HasFile)
    {
        try
        {
            string path = Server.MapPath(".");
            FileUpload2.SaveAs(path + "\\new\\" + FileUpload2.FileName);
        }
        catch (Exception ex)
        {
        }
    }
    else
    {
    }
}

I am trying to upload a file and showing the uploaded file simultaneously and facing the error like "An object reference is required for the non-static field, method, or property 'parent.FileUpload2'”

Posted 5-Jul-13 2:57am

chetna2810

Updated 5-Jul-13 3:54am

Prasad Khandekar

v2

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Comments

PRAKASH9 5-Jul-13 9:05am

please make your method non-static instead of static.may be solved your problem

2 solutions

Solution 1

Try this

C#

public  string btnSubmit_Click()
{
    Thread.Sleep(3000);
    //upload your file here
    if (FileUpload2.HasFile)
    {
        try
        {
            string path = Server.MapPath(".");
            FileUpload2.SaveAs(path + "\\new\\" + FileUpload2.FileName);
        }
        catch (Exception ex)
        {
        }
    }
    else
    {
    }
}

Posted 5-Jul-13 4:02am

Syed Salman Raza Zaidi

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Sampath Lokuge · Accepted Answer · 2013-07-05T04:09:00

Solution 2

You cannot access instance members from static members so you have 2 choices.

1. Make the method an instance method (remove the static keyword)

2. Make the field (i.e. FileUpload2) a static (add the static keyword)

The one you choose will depend on whether the field should be shared across all instances or not.

More information about static :

http://www.dotnetperls.com/static-field[^]

UPDATE

HTML

<input type="file" name="file_upload" id="file_upload" />

Javascript

C#

$(function() {
    $("#file_upload").uploadify({
        'fileSizeLimit' : '50KB',
        'swf'           : '/uploadify/uploadify.swf',
        'uploader'      : '/uploadify/uploadify.php',
        'onSelectError' : function() {
            alert('The file ' + file.name + ' returned an error and was not added to the queue.');
        }
    });
});

For more info check this :

http://www.uploadify.com/documentation/uploadify/onselecterror/[^]

UPDATE 2

C#

onError: function (event, queueId, fileObj, errorObj) {
                $("#msg").html(fileObj.name + " was not uploaded ");
                if (errorObj.status == 404)
                    $("#msg").html("Could not find upload script. Use a path relative to: " + "<?= getcwd() ?>");
                else if (errorObj.type === "HTTP")
                    $("#msg").html("error " + errorObj.type + ": " + errorObj.status);
                else if (errorObj.type === "File Size")
                    $("#msg").html(fileObj.name + " " + errorObj.type + " Limit: " + errorObj.info / 1000 + " KB");
                else
                    $("#msg").html("error " + errorObj.type + ": " + errorObj.text);
            }

For more info :

http://stackoverflow.com/questions/11577868/mvc-3-uploadify-how-to-show-custom-error-message[^]

Note : For this You can get error codes from the link I put UPDATE section.

I hope this will help to you.

Posted 5-Jul-13 4:09am

Sampath Lokuge

Updated 6-Jul-13 3:10am

v3

Comments

chetna2810 6-Jul-13 1:40am

Thanks for reply..
actually i am new to jquery trying to upload a image in asp.net using jquery. Jquery always call a static method and i am unable to use fileupload control in the static method. So, i cant't remove static keyword..Suggest me if you have some idea on this..
Thanks in advance..

chetna2810 6-Jul-13 8:32am

yup :) i found my solution using uploadify pulgin but..can you tell me how can i show my desire msg when file size in increased.(using fileSizeLimit of uploadify pulgin)

Sampath Lokuge 6-Jul-13 8:53am

@cheetu2810 Plz check my UPDATE section.

chetna2810 6-Jul-13 9:00am

thnx :) i did that my desired message in coming but still the default message is coming like "some files were not added to the queue.." :(

Sampath Lokuge 6-Jul-13 9:12am

@cheetu2810 try with UPDATE 2 section.

chetna2810 8-Jul-13 1:31am

Hello..Thanks for ur help
i tried your suggest in "onSelectError" and "onError" both yes the desire msg is coming but the default message is still coming..

Sampath Lokuge 8-Jul-13 4:03am

@cheetu2810 OK then you have to contact their forum here :http://www.uploadify.com/forum/

chetna2810 8-Jul-13 4:15am

yup :) Doing sir. But thnx for ur cooperation.. i m new to jquery..

chetna2810 9-Jul-13 4:35am

Still unable to find the solution and unable to use the event “onError” in Uploadify. It is in UploadiFive.

Sampath Lokuge 9-Jul-13 4:46am

@cheetu2810 can you put your final code snippet on your question area (with your onError events and all).

chetna2810 12-Jul-13 2:59am

@Sampath LokugeNow i m able to show custom message in uploadify :) by editing this file "jquery.uploadify.js" i m unable to show dialog of jquery-ui :(..
How can i use uploadify and jquery-ui both together :(

Sampath Lokuge 12-Jul-13 3:11am

@cheetu2810 Congratulation for sorted out the custom message issue first.And we would like to see that code snippet also.If you put that It will help for others.Your 2nd question is not clear.You can use both Uploadify and jquery UI simultaneously.Check here for more info : http://jqueryui.com/.You just need to add references properly. Uplodify references should come after the jQuery Ui libraries.

chetna2810 12-Jul-13 7:11am

@Sampath Lokuge Thnx:), the credit goes to you becoz i work on the event 'onSelectError' in 'jquery.uploadify.js' file and yes according to your suggestion i put the jQuery UI libraries first and now i am able to use Uploadify and jquery UI simultaneously. :)

Sampath Lokuge 12-Jul-13 7:16am

@cheetu2810 Glad to hear that it helped!

Sampath Lokuge 12-Jul-13 7:30am

@cheetu2810 If you feel this solution gave a right direction for your solution you can accept this as a solution.It will help for others in future.

chetna2810 20-Feb-14 3:20am

@Sampath Need help!!
i have a record in the table like 635 in numeric. i want to convert in into 06 hours and 35 min.
or 18 hr 35 min

Sampath Lokuge 20-Feb-14 3:28am

Please put your question on new thread with more details and send me that link.

chetna2810 25-Feb-14 8:41am

Thnx for ur response sir but i have solve that..

chetna2810 22-Apr-14 6:26am

@Sampath Sir Need help in using CrossTab in Crystal Report !!

Sampath Lokuge 22-Apr-14 6:28am

Where's your problem's url ?

chetna2810 22-Apr-14 6:34am

http://www.codeproject.com/Questions/761792/Crystal-Report-Insert-CrossTab