Web Forms :: Validate File Size After Upload Using FileUpload Control?
Jul 11, 2012
i use these code to set limit size for image that users want to upload
protected void BtnUploadS_Click(object sender, EventArgs e)
{
string path = Server.MapPath(".") + "../image/House";
[Code]....
here i define if (fup1.PostedFile.ContentLength < 102400) this size for image but when i upload image that has more than this 100KB it show error ===File size of 756 KB is exceeding the uploading limit but it upload file i don't want users can upload file morethan 100KB but here show error but upload image why?
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Similar Messages:
Jul 5, 2010
I do not want to change the default settings for file upload, 4Mb is more than enough for the project I'm working on. After quite a bit of searching I found two approaches that were purported to work but neither one is preventing the "Maximum request length exceeded" error. The first approach[see ref. #1 below] performs validation with a custom validator and in code behind on the page that contains the FileUpload control. It doesn't work. The second approach [see ref #2 below] performs validation in the Application_BeginRequest event in Global.asax. The author stated that validation must be handled by this event. Quoting: "The way to get past is to use your Application_BeginRequest event to handle the problem.. This event takes place for each request to your application BEFORE the data has been completely uploaded. Here you can check for the content length of the request and then redirect to the some error page or the same page with some value in session or query string so that the page can show appropriate message to the user." Here is my code from Golbal.asax based on the above. As noted, this approach doesn't work either.
protected void Application_BeginRequest(object sender, EventArgs e)
{
const int maxFileSize = 4 * 1000000; // Slightly less than 4Mb
if (Request.ContentLength > maxFileSize)
{
Response.Redirect("~/FileUploadError.aspx");
}
}
One comment by a reader of the Global.asax approach was that the value returned by Request.Content.Length would include everything on the page, i.e. viewstate, image and text content, etc. I suppose one work-around would be to set the limit higher in web.config but validate for max. file size in code behind, but that seems kind of silly because I'm manipulating the uploaded files (images) to reduce the size anyway; storage space isn't the issue, performance is. Has anyone managed to solve this poblem?
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Jul 26, 2010
i am uploading a file through file upload control , file size has greater then 4 MB, I have to give the proper alert msg to the user that file size exceeding the limit.how to do it , because at server side it is crashed on the IIS and not return to the server to check the file size validation.that how it is possible to validate the file size and give the proper alert messege
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Mar 3, 2010
Using C# .NET 3.5 with VS 2008.
I've been playing with the FileUpload control for an upcoming project where the user is allowed to upload up to five files at once, but each file can only be 5MB in size. Simple enough all I would need to do is add in the httpRuntime element to the web.config and up the file size and timeout.
[Code]....
what I'm really getting at is there a better way to trap if the file size is too large before processing while using the FileUpload control. I would like to be able to keep the user on the same page but update a label control.
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May 7, 2015
If I want to increase the upload size which part of should I edit in the code below:
<system.web>
<httpRuntime executionTimeout="240" maxRequestLength="20480" />
<compilation debug="true" targetFramework="4.0"/> </system.web>
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Jun 30, 2012
I use file upload control. How I can define that user can upload 300kb if they upload more than 300kb it show error that they can't upload more than 300KB...
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Nov 26, 2010
i am not able to show an alert message when a file is uploaded from a FileUpload control which is more than the size mentioned in web.config file like this in my situation...
"<httpRuntime maxRequestLength="2097151" executionTimeout="3600"/>"
i want to show an alert message when ever user clicks on the upload button if it excceds the size.
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May 7, 2015
I am planning to create a web page with the name of the student, course,pic and the resume to be uploaded by the user for specified students...
If I upload the resumes of students with same name how to differentiate. Looking for creating a name of the file name randomly as next I'm planning to retrieve the resume via search function to download and view the resumes....
Saving the resumes with same name with differentiate or randomly to save the files with new file name....
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Sep 8, 2010
i want to upload file to web server without using fileupload control...
here is issue is that i have static path and using that path i want to upload that file to web server..
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May 7, 2015
I have one textbox=txttitle and one fileupload control=fuppdf
below is fileupload control code:
if(this.fuppdf.HasFile)
{
[Code]....
here I want when it want save name of pdf in database it save name with text that users enter in txttitle...
i.e:
users enter this text in txttitle: "City"
and the pdf file's name that they upload is jack.pdf
now I want in database it save with this name City.pdf
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Feb 19, 2010
I have a file upload control i my page and have specified a max size of 1G in web.config file:
<location
path="DMS/Supplier/Submission.aspx">
<system.web>
[code]...
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Mar 26, 2016
i have file upload control and i need to check that user can only upload video whic has equal or less than 15 sec length or max 1 mb size.
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Jan 19, 2011
I want to upload file at client machine using fileupload control. How can I do this in asp.net.. Currently I am using the following code to upload a file. but this code gives the contents of file at server machine..
I need the full file path..In IE versions higher than 7, FileUploadControl.PostedFile.FileName gives only the filename ..
string filename = FileUploadControl.PostedFile.FileName;
sr1 = new StreamReader(FileUploadControl.PostedFile.FileName);
[Code]....
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Oct 21, 2010
I have a file upload control in which i want to restricr the users not to upload more than 1mb file. Is it possible using custom validator or any other code. I want to raise validation before any postback happends.
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Dec 7, 2010
My project is running with VSS..I have it's IP Address to connect it. There is a folder "DataShare" in VSS for my project. My task is, i need to upload a document(*.doc) from my Local drive to VSS Folder "DataShare" with FileUpload Control How should i do this?
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Jan 8, 2010
I am using the fileupload control for file upload on flickr from myapplication.using Fileupload control, How can i get the upload file physical path(local system file path).
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Apr 15, 2010
I have used a FileUpload control in my web page. Now I want that when the textbox of the control is blank (i.e no file name mentioned), the upload button should be disabled. Only after the some file name is mentioned, the buttong should get enabled.
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Sep 28, 2011
Is there any way to change the look of the FileUpload control, in particular I just want to make the input field bigger but nothing obvious seemed to work.
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May 7, 2015
How to set default file in <asp:FileUpload />
When a FileUpload is null then i want to set defualt file .
regarding my code :
Byte[] imgByte = null;
if (FileUpload1.HasFile && FileUpload1.PostedFile != null)
{
HttpPostedFile File = FileUpload1.PostedFile;
imgByte = new Byte[File.ContentLength];
File.InputStream.Read(imgByte, 0, File.ContentLength);
}
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Jun 25, 2010
I am working on a project, in which I need to upload the .swf file by using ASP.Net fileupload control. But, when I click upload button, it doesn't work even not arises any related error, but "Internet Explorer cannot display the webpage" this error arise which is not related to by problem. While, instead of .swf file, when I tried to upload .doc, .txt, it uploads without any error.
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Jan 24, 2011
I have a user control in which i am using File upload control for uploading file.
I have used ModelPopExtender here for showing it in popup.
I am using javascript function for full PostBack. In Javascript function, i am using __doPostBack for PostBack. It is working fine when i use this control in aspx page.
Problem occurs when i use this user control in another user control. It does not find javascript function.
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Apr 27, 2016
How to file upload without file upload control in C# i am Very Confuse
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Aug 25, 2010
In my ASP.NET project, I want to add a facility to my page so that when the user clicks a button, a 'browse file' dialog box directly opens up. After he selects the file in the dialog box, I want to save that image on the server, and update an imagebox based on that selection.
Is there some sort of dynamic 'browse for file' type dialog box that I can use?
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Nov 30, 2015
My application allows a user to upload a file using the FileUpload control. The data contained in the uploaded file is then displayed to the user in a Grid for review if certain field validation criteria is met otherwise, a message is displayed stating that invalid data was encountered. If the data displayed is satisfactory, they have a 'Process Data' button to add the data to the system.
Initially, I used a simple If/Else block to determine if there was a file selected or not and if not, display a message to the user. As the coding got more complicated, this stopped working and I was told to use the RequiredFieldValidator control instead to get around the issues that arose.Now, I have a new issue: after the uploaded file data passes field criteria validation, the FileUpload box is cleared automatically and so when the user clicks the 'Process Data' button, the VC throws a message stating that the file name is missing from the FileUpload box.
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Nov 11, 2010
[code]....
in Fileupload control when click any button to upload the then file name is blanked?
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