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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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.
View 1 RepliesI 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.
View 1 Repliesi am use this code for download..download is correct but after downlaod when open file type zip file or pdf see this error..jcoverflip-1.0.2.zip: 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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I am a newbie of asp.net.
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.
I want to download a file from database using asp.net 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)
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
View 1 RepliesHow 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.
View 6 RepliesI 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].....
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
View 2 RepliesI 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.
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:
[URL]
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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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.
View 1 RepliesI 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...http://encosia.com/2007/02/23/ajax-file-downloads-and-iframes/I 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...
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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.
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)
View 3 RepliesI am downloading file from database using the following code. This code downloads an excel file from the database which has a macro attached to it when it is opened. This macro reads file name of the excel file and uses it for its computation. Everthing works file if user saves the file on his harddisk and then open if but if he directly opens the file from the dialog(by hitting 'Open' button) then file name of the opened excel file comes out be the name of the webform that has the above code and this leads to error in the macro. Is there any option through which i can control the name of the file if user directly opens the file from dialog or the option to disable or remove 'Open' button form the dialog?
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i am using amazon s3 service. now i want to show download dialog box in my asp.net application when user come on download page. i am using amazon sdk.
View 1 RepliesI'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?
View 1 RepliesI have added linkbutton inside gridview to download, below is my code..
protected void lnkDownload_Click(object sender, EventArgs e)
{
try
{
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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"
This below code i have used in my aspx page for file download.
Response.AppendHeader("content-disposition", "attachment; filename="" + emailAttachment.FileName + "";");
Response.ContentType = "application/octet-stream";
Response.OutputStream.Write(emailAttachment.Data, 0, emailAttachment.Data.Length);
Response.End();
This block of code display Download file Dialog for Open or Save the attached file.It's working fine in Mozila Firefox and IE8 but doesn't display Download file Dialog box in IE 7
I have made an application where I am displaying the .pdf , .doc , .docx files. These files are uploading from an Admin Panel.When user place a mouse pointer on download icon provided in front of every file, it shows the complete path where it’s get saved.I want to avoid this path visibility even when user place mouse on download icon and even if it Inspect an element (as most modern browser will have this functionality).
View 1 RepliesI'm trying to force a large (200+ MB) file to download that's on a remote server. The problem is that I can't use the "WriteFile()" function, since I'm not using a virtual path. Then, when I try:
Response.AppendHeader("content-disposition",
I need to retrieve and save a word document from a xml document ... I can retrieve name, phone number that and all .but i do no how download and save a word document from xml database .
<?xml version="1.0" encoding="utf-8"?>
<registeration>
<Date>
</Date>
<Name>
</Name>
<Qualification>
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i m creating asp.net Mobile website page to download symbian .sis file to mobile ,but its not geting download properly.its working perfectly on desktop.
View 2 RepliesI want to download an exe/ msi file from server to client so I used hyperlink control and gave filepath in navigateurl property of hyperlink control , but it is working for small sized files and for large file it shows error as CGI time out problem . Is there any solution to resolve this problem. Also downloading exe file using hyperlink, is it a good method? Is any other solution to download the file.
View 5 Replies