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?
I am generating some text on my application just like as below;
KgQa5MgxIXH6czaTSue/zcjQ6p5d4BCK2uNgscHq3+h/gbbrfEPvWGySnZGy88ntm28DPFp3KhDFQhXHNkZecQI0HyBq7BDJTop6n0VgTWc2AQEnZWPvEgHc4vMTDIfnoY+/04414vOUdatD8G+CZexcJQr0Tz4jLkDEsI58xcc=
I wanna save this text in my sql db as binary.I wanna retrive it any time I want and read text and view it. How can I do that in c#. Aslo what should my table row type? binary(1000) is ok?
i am working on the mobile application, and i want to read binary file .. its just contains the string.. e.g "hi Wel come". I have opened that file using filestream and try to read that file using binaryReader.. but it didn't read that file correctly. if i use
binaryreader.readstring();
it throws an exception of endOfstream. when i stored that stream into array of byte and read it through response.binaryWrite.... like
Response.clear();
Response.BinaryWrite(buffer);
Response.flush();
Response.close();
Response.end();
it shows me the correct result as i want ..i.e it shows the "hi wel come" on browser. like this i want to store that content of file into string
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;
//// Send the file to the browser
//Response.AddHeader("Content-type", contentType);
//Response.AddHeader("Content-Disposition", "attachment; filename=" + name);
//Response.BinaryWrite(data);
//Response.Flush();
//Response.End();
What is the difference between SqlServer2000 and sqlServer2005
View 1 RepliesI want to read and write excel file . it can do with oledb , there is a limitation maximunm characters < 255 solution is mono data type , now create table become second sheet (when open excel it is shown as hidden.)
View 2 Repliesi want to store 15digits number in sqlserver2005.Presently iam using varhar(50) am i correct or wrongwhen iam using varchar(50) i getting this error The conversion of the varchar value '3521340104012721' overflowed an int column. Maximum integer value exceeded.in my stored procedure do we have any other datatype to store 15digits or may be more in sqlserver 2005 ,iwant to use only sqlserver2005his 15digit number is GPRS device serial number idonot have an idea how many digits does it contain so i mentioned 15 or maybe morei have a sample data where they have given 15digit seial no.
View 5 RepliesI have a lot of members data to enter into the ASPNETDB database. How can I read this data from an Access data file and input into the SQL database. All data is for user Names and Password,
View 1 RepliesI want to read from database where I've stored a image in binary field and display a image.
while (reader.Read())
{
byte[] imgarr = (byte[])reader["file"];
Stream s = new MemoryStream(imgarr);
System.Drawing.Image image = System.Drawing.Image.FromStream(s);
Graphics g = Graphics.FromImage(image);
g.DrawImage(image, new Point(400, 10));
image.Save(Response.OutputStream, ImageFormat.Jpeg);
g.Dispose();
image.Dispose();
}
con.Close();
This piece of code doesn't work:
System.Drawing.Image image = System.Drawing.Image.FromStream(s);
I tried the code from this article. And I got the same mistake " the parameter is not valid ". Maybe I'm not aware of something, some setting in sql server or webconfig or sth else. Anyone else who has experience from fetching images from database? The parameter is not valid is the error message. db table contains data. What am I doing wrong?
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 am trying to read data of from a sql database
the code that im using is as follows:
[Code]....
as you can see, im using table adapters - though when i run the page, it throughs me the following error, which i'm finding hard to understand
for my last project, i had to use the exact code, but at the time, i was using an access DB and now i'm uning sql D|B
the only difference from last time is that instead of using :
using System.Data.OleDb;
Now im using: using System.Data.SqlClient; //sql server
Is it possible to convert a datatable into binary data and save it into on a binary field on database?
View 2 RepliesWhats the best way to read data from cvs file
View 2 RepliesI m uploading a text file. I want to read that text file line by line and I want to save that data into database if there are no errors in that text file. I have 5 different columns in database and I want to take those 5 columns data in the text file and insert into respective columns.
For this, which is the best way to do. Can we read and insert data into respective fields in no time.
here is my code which is working fine to read batabase image from database but if there is NULL value in database so how can i read physical path noimage.jpg
[Code]....
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.
[code]....
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] .....
my problem is my asp.net and C#.net application should read flat files(.txt,.doc) from folder automatically and read the data from file and stored into database
my file like this :
BNK20100312APPHU6658994 // BNK,20100312(date),Ap,PHU6658994 So we have to store these..
BNK20100312APPRU5104220
BNK20100312APPRU5761800
BNK20100312APPZU3739288
BNK20100312APPZU4454037
BNK20100312APESU2552894
BNK20100312APAXU4302543
BNK20100312APCKU1613369
i'm quite new to asp.net and have been working on a simple way for users to send messages to each other....
the messages work fine, users can send and reply, however, i want a way to tell the users when they have a message and how many...
how to do this in simple terms and supply vb code if possible.
I need a way to read all the rows in one column from an Excel file that the user picks from a fileupload control. I tried saving the excel file on the webserver with the upload control and then opening it with a OleDbConnection but that fails when running it from the webserver and gives the error:
Request for the permission of type 'System.Data.OleDb.OleDbPermission, System.Data, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089' failed.
This works fine when just running it localhost, so i figured it might be a problem with security level at the webserver which i cant change. Instead i tried doing it with a streamreader direct from the fileupload control and because theres no need for saving the excel file on the server, but im not sure how to query the rows i need this way.
This is a very common error as evidenced but the very large number of problems and suggested solutions on the web. I finally got around it last week but can't remember what was the step that did it. At that time, I was building a web application rather than a web site. Is that the difference? As you can see, it is no longer in the APP_DATA folder and is named membership.mdf rather than aspnetdb.mdf. I ran aspnet_regsql.exe to create it and actually had it working and was updating it successfully. But for other reasons, I had to scrap the application and decided to re-create it from scratch as a web site rather than a web application. I had been using Visual Studio 2008 to build the web application but am now using Visual Web Developer 2008 Express Edition to build the web site. Unfortunately, the Visual Studio application will no longer open so I can't verify that the web application still works. Can anybody help? (Please!!!) BTW, ASPNET and NETWORK SERVICE both have full control over the membership.mdf.
View 1 RepliesI'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 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 have a page that have
[Code]....
[Code]....
And The ImageViewer Page Have
[Code]....
when i click the button for the first time it worked and the debugger go to the load of the Image Viewer page ,and when
i click the button again, it does not go to the image viewer page load at all (some kind of cache),of course if i remove the update
panel it will work perfectly, but i need it with update panel , the above code is a smplified test version of what i trying to do,
i need to read binary image with update panel(orginally i dont have a physical image, only binary)
I have several cases in my database and for each case there is binary data. I am reading binary data for each case in a byte attray and saving it as a pdf file.I can succesfully open this pdf file.
protected string SavePdfFromDB(string caseNum)
{
string PDFFileName = string.Empty;
SqlDataReader dr = csiDelegate.DataReaderProcedure("GetReportFilenameForFileSystemNewestFile", [code]....
Can I read this binary data for multiple cases in the same byte aray and and save it as a pdf? Will this create a valid readable pdf?