Download Binary File From Database

May 4, 2010

I have a binary file in database.How i can make a download of this file in header of page when a button is clicked

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HttpHandlers / Modules :: Setting Path Of Download Binary File From Sql Database?

Feb 9, 2011

I'm downloading a binary file from a SQL database to a client machine and want to instead download it to a folder on a server. THe code I'm using is below. How would I change the .AddHeader(I assume) to send the file to a folder on my server rather than the computer running the web page.Protected Sub download(ByVal dt As DataTable)

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Web Forms :: Download Binary File From Database Inside Page Load Event

Sep 20, 2015

I want to download a file from database using c# code in page load event.My table design as below

Table Name: tblFiledownload
Id - int
Data - varbinary(MAX)
FileName - varchar(50)
FileExtension - varchar(50)

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Controls :: Add Binary File From Database To Zip File Using Dotnetzip Using C#

May 7, 2015

i have table and i save image into table format binarry,but i want zip this image that user can download multiple image from website

i wrrite this code but this code download one image......
//string name = item.Name;
//string contentType = item.FormatImg;
//Byte[] data = (Byte[])item.Image;
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//Response.AddHeader("Content-type", contentType);
//Response.AddHeader("Content-Disposition", "attachment; filename=" + name);

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Possible To Convert Datatable Into Binary Data And Save It Into On Binary Field On Database

Sep 20, 2010

Is it possible to convert a datatable into binary data and save it into on a binary field on database?

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How To Get And Save/write File (.doc, .xls, Etc) In Database In Binary Format

Mar 4, 2010

Actually I want to get a file and save its length, its MIME type, content into database in binary format.

It saved but not open in hander in correct format.


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Web Forms :: Check If Binary File Already Exists In Database

Sep 20, 2015

I am learning a tutorial, it is about saving mp3 files in database.

Have a look below picture i  can upload a mp3 file multiple time with the same name how to avoid it?

[URL] ...

protected void btnUpload_Click(object sender, EventArgs e)
using (BinaryReader br = new BinaryReader(FileUpload1.PostedFile.InputStream))
byte[] bytes = br.ReadBytes((int)FileUpload1.PostedFile.InputStream.Length);
string strConnString = ConfigurationManager.ConnectionStrings["constr"].ConnectionString;

[Code] .....

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DataSource Controls :: Read Binary File From Sqlserver2005 Database?

Mar 19, 2011

i have a table fileupload with id,username,filename,filedata,uploaddate here i have uploaded successfully...but i cannot retrieve the binary file uploaded by using its id. can anybody tell me how to read binary file from database using c#.net3.5?

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How To Download Image (binary Data)

Mar 16, 2011

So, I would like to enable user to perform some download function for image.

I'm storing the image to the database as binary data by the way.

how to download that image?

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Download File From Database By File's Path

Apr 4, 2011

I had a download task in my project, which inserts files and downloads these files. I did my table in database and have a column which has the path of file and folder in project which will have the files. I did this well and my files insert well in folder and path in database. But I could not download these files from folder with the ID of path from database

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DataSource Controls :: Retrieving Binary Files From SQL And Download It?

Mar 17, 2010

My apps required me to store upload files into SQL binary fields. And then allow users to retrieve the files and either chose an apps to view them or save on disk. These files can be in diff formats, not just one type.

I have been reading about using the Response.ContentType method and Response.AddHeader method. The issue is the users can upload anykind of documents, ie: MS words, Xcel, JPEG,TIFF.... So at the time of downloading, I have no way of knowing that type it is to put in the Response.ContentType.

Can't I just stream it to the browser, let the download dialog box handle the type selection? as in when you download a file, the dialog box would ask if you want to select an app to open the file or save it on disk. How would I do so ?

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Web Forms :: Download Database File (.mdf)

Mar 5, 2010

I have created a small website, which has a list of some customers database. Now, i want to back up the mdf file i used in the website, from the website itself by logging in as an adminstrator. when i am logged in as Admin and press a button called "DOWNLOAD", the download of the database file(.mdf) should start.

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Web Forms :: Trying To Get File To Download From Database

Mar 23, 2010

I am trying to grab files from my database and allow the user to download it. I can generate an image or a text file, though they appear directly on the webpage with no downloading(i have comment this out) but I want to be able to download any kind of file right onto my computer. Any help? I was consider using memory stream but unsure on where


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File Upload To Database (and Download)?

Sep 19, 2010

How can I upload a file to a database (with as little code as possible!) along with a desciption of a file and then search through the descriptions to retrieve the appropriate files. Then how can I click on one and download it.I am not a very advanced programmer and would like full step by step code if possible not just a link to a website.

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Web Forms :: File Won't Download From Database?

Apr 5, 2010

I have made a database and uploaded a few different types of files. PNG files will download from the database but PDF & DOCX ones will not. Instead of downloading the app offers the ASPX page (download.aspx) to download.

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ADO.NET :: Want To Download A File From A Database Using LINQ To SQL?

Oct 26, 2010

I have used AsyncFileUpload AJAX control to upload a file to a column in a SQL Server database using LINQ to SQL. Below is the code. How do I retrieve the document and allow the user to save to local drive using a Save As Dialog box using LINQ to SQL? This is ASP.NET web application. The DocumentFileContent database column is a Image SQL Server data type.

var VRRRMDataDataContext = new VRRRMDataDataContext();
VRRRMWeb.AllUsers.Document custDocument = new VRRRMWeb.AllUsers.Document
{ DocumentFileName = AsyncFileUpload1.FileName, [code].....

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Download A File Stored In Database?

Jul 23, 2010

I have file content in sql database as binary format and also saved the file with its extension .

I want to have pop up for save as ,so that client can save the file on her system in the same document format.

i.e if it .doc then it should get save in .doc format only. provide the code for the same.

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Web Forms :: How To Download VARBINARY File From Database

Jan 12, 2014

i am use this code for is correct but after downlaod when open file type zip file or pdf  see this The archive is either in unknown format or damaged

protected void LAtt_Click(object sender, EventArgs e)
string str = String.Empty;
Conn = new SqlConnection(ConfigurationManager.ConnectionStrings["bakerConnectionString"].ToString());
Cmd = new SqlCommand();
Cmd.CommandText = "SELECT * FROM Tcomplaint where id_complaint=@id_complaint";


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Data Controls :: Trying To Download File From Database

Oct 26, 2012

I get this error when trying to download the file

Object reference not set to an instance of an object. ---> System.NullReferenceException: Object reference not set to an instance of an object. at DotNetNuke.Modules.ID_LIT.View.GetData(SqlCommand cmd) at DotNetNuke.Modules.ID_LIT.View.Button4_Click(Object sender, EventArgs e) at System.Web.UI.WebControls.Button.RaisePostBackEvent(String eventArgument) at System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) --- End of inner exception stack trace ---

I am using this example from your site:


here is my code:

Public Function GetData(ByVal cmd As SqlCommand) As DataTable
Dim dt As New DataTable
Dim strConnString As String = System.Configuration.ConfigurationManager.ConnectionStrings("mystring").ConnectionString
Dim con As New SqlConnection(strConnString)
Dim sda As New SqlDataAdapter
cmd.CommandType = CommandType.Text
cmd.Connection = con


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AJAX :: Download File From Database Within A Update Panel?

Mar 3, 2011

I have struggled with this for the last 2-3 days. I have a tab container control with a update panel surrounding it. On one of the tabs I have allowed the user to upload and download files to a SQL Server database. The upload works fine and the download works fine only when I remove the update panel.

I have tried to implement the solution that's provided at the following location... had to modify the code a little bit to fit my scenario but it looks like it would work. Is there another way to download files from a database within a update panel?

If there isn't another way to do this what could be wrong with my code...following the example on the encosia site...

Page starting from [Code]....

The code never gets past the if statement with in this java script. Should I put a trigger on the update panel to force a post back. Any help will be appreciated, java script is not my strong point.

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Web Forms :: Load File From Database And Write A Response To Let User Download?

Mar 10, 2010

I am a newbie of

The environment is .net 3.5 and C#.

There are files stored in sql server (datatype of column is varbinary in the database).

each record is in one record in that table (FILE_TABLE).

And there is another table (PATH_TABLE) to store the files paths.

for example,

when the user download the folder A (select an item on the tree and click a button on the client side),

there is one sub-folder B and two files A-1 and A-2.

in folder B, there is two files B-1 and B-2.

then, at the code behind (server), the server will get the files from the database and convert them (including the files and subfolders) to a .zip file (or other compressed files)

and then write a response (using the method HttpResponse.BinaryWrite(Byte[] xxx) )

to client side and let the user download.

after the download, the user can extract the compressed file and the structure of the folders and files keep unchanged.

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Show Download Dialog Box In Case Of File Download - Located On Amazon Server

Jan 4, 2010

i am using amazon s3 service. now i want to show download dialog box in my application when user come on download page. i am using amazon sdk.

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HttpHandlers / Modules :: Redirect Shareware Download URL From A File To A Download Page?

Oct 13, 2010

I'm about to submit my pad file to multiple sharware sites but the pad file has to have a direct link to the download file and can't link to a download page which is what I would like to do, so I can track the traffic and get the downloader's email before allowing the download. I am running an ASP.NET site in VB. Is there a way to tell the web app to redirect to a specific aspx page when it receives a request for a specific file?

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AJAX :: Download LinkButton In UpdatePanel Throwing Error While File Download?

Jun 10, 2013

I have added linkbutton inside gridview to download, below is my code..

protected void lnkDownload_Click(object sender, EventArgs e)


its giving me following error

"Unable to evaluate expression because the code is optimized or a native frame is on top of the call stack"

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Web Forms :: Download File Using New Window When Download Button Is Clicked

Sep 2, 2013

I need to download  a .mp3 file from a folder. during download a new blank page should open and after downloading it should close automatically.

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