Reading Or Writing A File To A SQL Database
Nov 22, 2004
Halo, I am a bit new to this
Please can someone help me, I would like to write a file(Any type) to a SQL database like a attached document(s) for the current record and be able to detatch the document when needed.
I use VB.NET for a ASP.NET app.
I basicly would like to attach documents to a piece of equipment may it be any kind and if the user views the equipment he will be able to detatch the documents for that piece of equipment and open it with the correct software.
PLEASE HELP!!!!!!!
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Apr 27, 2006
I'm doing a test package which reads a flat file, makes an adjustment using the derived column task and writes to the same flat file. But, the read locks the flat file, so the write can't access it. Any ideas for a resolution?
Thanks,
Dave
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Feb 14, 2008
Hi,
I have a data structure called 'Quote' which contains a number of different variables and controls ranging from text boxes, check boxes and radio buttons, i need to be able to read and write this from a database.
First I think a description of my overall project is needed:
Project Description
I have been given a brief that basically says: i have to create a programmed solution in VB to solve a problem. This problem can be anything we like, and I personally have chosen to create a program that manages quotes for building Log Cabins (this is very contrived and far from anything someone would do in the real world).
My solution will allow a generic user to create a quote (using a form with controls such as text boxes, check boxes, radio buttons) , and then save this to file. These users may then wish to load/edit this quote at a later date, from another form.
Whilst completing this project, i'll only have up to about 5 records (quotes) within the system, so i dont need the ability to store hundreds of records. And each record will be relatively short, with only about 10-15 data items within the data structure.
Also the Admin (or business owner in this case) need to be able to view all saved quotes in a presentable format, and edit them if needs be, from within this same program.
This solution does not need to be absolutely perfect and 100% efficiently coded, or have all the bells and whistles a real-world program would have. This is for an A level computing project by the way.
So basically, i need to be able to read from the database (to populate a Data Grid (i imagine this is best way?)) and so Admin can access any quote and edit it (editing is not vital, but viewing/printing is. Maybe i should stop at just viewing any quote?). Also i need generic users to be able to fill in the Edit Quote form and then save this data into the database.
And is a data structure really required for me to use a database?
I've never used databases in VB before (but have used them elsewhere, mainly Access) and so am completely new to this. Any help will be much appreciated.
Thanks
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Feb 16, 2008
I need to select all the records in a table, loop through them one by one, calculating some new field data, and then write the new data back to the same table. Here is the basic structure of what I've come up with:<CODE>SqlCmd = SqlConn.CreateCommandSqlStatement = "SELECT ProductID, Name FROM tblProducts"SqlCmd.CommandText = SqlStatementSqlRdr = SqlCmd.ExecuteReaderIf SqlRdr.HasRows Then While SqlRdr.Read If SqlRdr.FieldCount > 0 Then ... SqlWriteCmd = SqlConn.CreateCommand SqlStatement = "UPDATE tblProducts SET Name = '" & NewName & "' WHERE ProductID = " & CStr(ProductID) SqlWriteCmd.CommandText = SqlStatement SqlWriteCmd.ExecuteNonQuery() SqlWriteCmd = Nothing End If End WhileEnd IfSqlRdr.Close()SqlCmd = Nothing </CODE>I get an error that tells me to close out the Reader before trying to execute the write query. But I can't close it out for the loop to work properly. So I assume that there must be another way to do this simple task, but I'm so new to all of this that I need some help! Thanks!
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Jun 13, 2007
I am new to database programming. What I want to do is have a database on a clients PC to use as data storage. This program will connect to a program running on our server (via TCP) which will store this information in another database. The clients database will only be accessed by my program - so I think that I don't need to register it with SQLEXPRESS. The servers database will probably need to be so another program can access it.
The problem I was having was writing and reading to a database that I created inside Visual Studio 2005. As I see it, there could be three issues - reading, writing, or setup of the database. To find out this issue I downloaded the Northwind database. The code below returns column 0 row 0 of the Customers table.
Code Snippet
NORTHWNDDataSet northwindDataSet = new NORTHWNDDataSet();
NORTHWNDDataSetTableAdapters.CustomersTableAdapter customersTableAdapter = new NORTHWNDDataSetTableAdapters.CustomersTableAdapter();
customersTableAdapter.Fill(northwindDataSet.Customers);
string data = (string)northwindDataSet.Customers.Rows[0].ItemArray[0];
Console.WriteLine("COL 0 - ROW 0: " + data);
This code returns "ALFKI". Which is what is in col 0 row 0 (This can be checked by right clicking on the Customers table in NorthWNDdataset.xsd and selecting preview data).
Next is writing. This is where I have the issues. The method below is one way that I tryed.
Code Snippet
DataRow row = northwindDataSet.Customers.NewRow();
row[0] = "1";
row[1] = "2";
row[2] = "3";
row[3] = "4";
row[4] = "5";
row[5] = "6";
row[6] = "7";
row[7] = "8";
row[8] = "9";
row[9] = "10";
row[10] = "11";
northwindDataSet.Customers.Rows.Add(row);
try
{ customersTableAdapter.Update(northwindDataSet.Customers);//table);
northwindDataSet.AcceptChanges();
MessageBox.Show("Update worked");
}
catch
{
MessageBox.Show("Update do not work!");
}
The messagebox shows "Update worked" - yet the data did not get added.
Thanks in advance.
Using:
Visual Studio 2005
C#
SQL Server Management Studio Express
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Sep 9, 2004
I'm trying to read a byte array of an image datatype from sql server, and then to put this in another field in the database. I get a byte array, but somehow the image doesn't get into the db well with the sql parameters. Does anyone have an idea how to tackle this problem?
Thanks a lot, Hugo
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Apr 27, 2006
It looks like its not possible to both read and write the same variable from a script using the conventional Me.Variables.<variable> syntax.
I can only assign a variable as Readonly or ReadWrite and not both. If I assign it ReadOnly I can only access it in the PreExecute subroutine. If I assign it ReadWrite I can only access it in the PostExecute subroutine (in fact doesn't this just make it WriteOnly in fact?). So I can only either read in or read out a variable using this syntax, noth both. Is this right?
So the read and write a variable to a script, the VariableDispenser approach is the only option to use. Is this right? and is it documented somewhere that this is how to use variables in scripts. Thanks.
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Jul 20, 2007
Hi,
I want to make an application that fills in the variables into a dtsx package (ssis).
I'm able to read the variables created in the package
Application app = new Application();
Package p = app.LoadPackage(pkg, null);
Connections myConns = p.Connections;
foreach( Variable v in p.Variables){
Console.WriteLine(v.Name);
Console.WriteLine(v.Value);
Console.WriteLine(v.Namespace);
Console.WriteLine("/////////////////////");
Console.WriteLine("/////////////////////");
}
i'm also able to add on
Variable myVar = p.Variables.Add("amyCustomVar", false, "User", "3")
When the applications is closed the package does not contain the variable. So this is all done in memory.
Is their a way to actually write the variable into the physical package.
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Mar 20, 2007
We have a package that is using a ForEach loop container to access files on a network drive. For some reason I am getting a message that the ForEach enumerator is empty and did not find any files that matched the pattern. For the pattern I left the default *.* for testing purposes. I have specified the file folder as \remoteserverfilesharesubfolder and also as \remoteserverc$filesharesubfolder and have gotten the same message. However when I map a network drive and set the file folder to the network drive it finds the files. Is this a permissions issue?
After I finish processing the file I want to move it to a new directory. Once this is deployed in production, the package will not be running under a domain account and probably won't have access to the network folder. Is there any way to specifiy in the connection manager itself that it should use a specific account to access the folder?
TIA,
Sabrina
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Feb 16, 2008
Hi Guys
In my project I need to write the data from an xml file to Database through a stored precedure.
On line a lot of help is available for writing data from Database to xml but I didnt see much info
about writing xml to database.
If any one could give me some code I will really appreciate it.(I am a newbee).
This application is developed using asp.net 1.1 and sql server 2005.
Thanks for your help in advance.
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Jun 6, 2007
Hi everyone I have a directory that contains a lot of text files that have data I need to draw from. I want to know if it is possible to write a program that will read all of the text files in the directory and pull out data and save it to a new textfile. For example: Each text file is formatted this wayColumn1, Column2, Column3"1","xxxx","yyyy""2", "xxxx", "yyyy""3", "XXXX", "yyyy" I want to put all lines that begin with 1 in one text file, all the lines that begin with two in another text file, and the same with all lines that begin with 3. my problem is I want to be able to point at the folder that contains those files and have it read every text file in the folder and perform the operation. If this is possible can someone point me in the right direction on how to get started.Thank you for any help!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
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Jul 20, 2005
I need to just back one table and not all the data in the table. Is there away to have SQL save the data return from a query to some text file that Ican then use to build the table in another table on another server?I am SQL server 7Thanks,S
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Oct 17, 2007
Hello,
Is there any ability to do database-level triggers in SQL 2000? I have a SQL 2000 database, and I was asked if we could create a trigger that whenever anyone touches the data in a database, to create an entry in an event log? If not, I have a main table I can put a trigger on; however, my question is how do you write to a file in a trigger as well?
Thanks.
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Feb 21, 2007
Hi All,
I have seen some different behaviors when I am writing SQL Server compact edition Database file into SD Memory card or any user removable storage media.
The following Steps for reproducing these behaviors.
1. Set your database location is in the SD Memory card.
2. Create a database and establish session.
3. Writing first record into the database is done
4. Remove your SD card manually from the system
5. Try to write a Second record into the database
6. You will get the error from this "SqlCeWriteRecordProps" API call - This is fine.
7. Put your SD card back into the system.
8. Writing Second record again into the database is done - This is fine.
So far the behaviors are good after that
9. Remove your SD card manually from the system again
10. Try to write a Third record into the database
11. You will suppose to get the error from this "SqlCeWriteRecordProps" API call but you won€™t get that error €“ I don€™t know why?
12. Then Try to write a Forth record into the database
13. You won't get any error from the API call "SqlCeWriteRecordProps" and return status is success.
14. Now put your SD card back into the system.
15. Then write Fifth record but this time its writing record Third, Fourth and Fifth into the database.
Note:
I am clearing (means Free) my record structure everything after calling this function "SqlCeWriteRecordProps". So I don€™t know why its wring Third, fourth and fifth record into the database.
Please Let me know your feedback.
Thanks,
Rajendran
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Sep 29, 2006
Hey everyone I've got this question that has me stuck for the last few days but its an important part of my website.....What I am trying to do is basicly have a user be able to upload a file, have that uploaded file plus some other info automaticly display on other parts of my site, and have a different user eventually be able to download that file....I have thought about allowing the file upload as a BLOB but still cannot find a proper way to execute this using VB, plus I have heard that this way of doing it is not reccommeneded cause databases were not designed to store large files like this, lots of articles recommened having the file upload to a Folder on your server then get the binary data for the file that can be placed in a database to refrence that particular file.....Well this also proves to be a lot harder then said here is what I got so far (written in C#) protected void UploadBtn_Click(object sender, EventArgs e)
{
if (FileUpLoad1.HasFile)
{
FileUpLoad1.SaveAs(@"C:Documents and SettingsAdamMy DocumentsVisual Studio 2005ProjectsWebsiteFiles" + FileUpLoad1.FileName);
Label1.Text = "File Uploaded: " + FileUpLoad1.FileName;
}
else
{
Label1.Text = "No File Uploaded.";
}
}
and here is the asp part of the code that goes with it<asp:FileUpLoad id="FileUpLoad1" runat="server" />
<asp:Button id="UploadBtn" Text="Upload File" OnClick="UploadBtn_Click" runat="server" Width="105px" />
<asp:Label ID="Label1" runat="server" Text=""></asp:Label>
Now from what I know is I need to get the binary of the file which I have read you can do with the Page.Request.Files statement but again not sure how I would impliment this. Does anyone have any suggestions on which way I should take when dealing with this should I try and just use the BLOB method or use the binary refrence method? and if so how would I impliment this, heck even some good tutorials on the subject would be great... Thanks.....Adam
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Mar 13, 2007
I'm sure I'm not the only one frustrated trying to figure out which log file SSRS writes to when an error occurs. Does anybody know a sure way to tell? It doesn't change the date/time of the date modified, so you can't sort by date in windows explorer. There seems to be no rhyme or reason to which file it writes to. For example, I had to go through 6 log files to find which one was being written to. I had thought (hoped) that it would always write to the log files with the latest embedded date/time stamp as part of the file name. It does not.
I'm tempted to start using a file system spy, or resort to other tactics. Does anyone have a sure fired way to see which log file is written to when an error occurs? I'm not talking about SQL Dump files - just "normal" errors when processing reports.
Thanks,
WillyDog
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Dec 4, 2014
I am trying to create and later read a data file from a package deployed in SSISDB, but it is not reading it while it is successfully creating the file. The same package when run from the file system package, runs successfully. Generating ispac and deploying in SSISDB is running for infinite time. Is it a permission issue?
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Feb 9, 2000
I have some records that have been deleted. I need to find out who did it and to do that I need to read the logs. Are there any utilities that will allow me to read login 7.0? How about 6.5?
Chris
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Jun 10, 2002
Hi
How can I read an ini file entry and pass this parameter to a stored procedure which will be run in a DTS Package?
Thanks for the input
mipo
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Jun 22, 2008
How do I view the SQL 2005 transaction log file(.ldf)?
Is there a built-in utility?
Thank you
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Jun 24, 2008
I am storing one text file on the server.This text file contains some mobile numbers.The file look like
009198XXXXXXXX
009198XXXXXXXX
009198XXXXXXXX
009198XXXXXXXX
etc
Here I need to read this text file row by row mobile number and then insert these mobile numbers into a table by using sql procedure or sql trigger or any other method or coding. Is it is possible or not?
If so then anybody can help me!
regards
Shaji
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Jul 13, 2006
Hello friends...
We have sql server 2000 and i need to read one perticular xml and from that i want ID field stored in one table...is it possible by query analyzer to read xml and stored ID in table...I have only path of that xml file...
like
select ID from ("D:XMLFolder*.xml)
that i want
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Oct 17, 2006
Hi
I have a problem with SSIS in that I need to read an XML file in from a URL,which brings me back the below XML. What I need to be able to do is essentially create a single record, including the nested XML <image> into the same record. This information then needs to be entered into a database table.
What I found is that if I use a data flow component, and have an XML source pointing to this URL, it essentially creates a different output for every level of nesting. This causes me serious issues because I would then have to somehow get to the information in the <image> tag, and then get everything below that, etc, to be able to get the images related to each <stock> record. This is a pain.
I also looked at using an XML task, where I could use an XSLT to transform to the required output, however, I can't point this XML task to a URL to retrieve the XML.
If anyone has any ideas I would greatly appreciate it
Thanks
Darrell
XML Format
------------------
<feed date="2006-10-17 17:08:46">
<usedstock>
<stock id="SFU22991">
<make>Peugeot</make>
<model>206</model>
<description>Peugeot 206 1.4 X-Line, 5 door Hatchback Tiptronic Auto 4Spd</description>
<hotline>08451553610</hotline>
<spec>Air Conditioning, Power Steering, Central Locking, Electric Windows, Alloy Wheels, CD Player</spec>
<deepurl>http://www.regvardy.com/used_car/dseller/SFU22991</deepurl>
<search>http://www.regvardy.com/used_cars/dseller/Peugeot/206</search>
<regdate>2005-01-27</regdate>
<colour>Blue</colour>
<price>7495</price>
<stocktype>USED</stocktype>
<category>Small</category>
<transmission>Tiptronic Auto 4Spd</transmission>
<bodystyle>Hatchback</bodystyle>
<fueltype>Petrol</fueltype>
<type>NCV</type>
<doors>5</doors>
<engine>PE0BC</engine>
<capcode>PE2614SED5HPIA</capcode>
<capid>26440</capid>
<image>
<urls>
<url>http://www.regvardy.com/imagedata/vehicles/g/pj54lyg_1.jpg</url>
<url>http://www.regvardy.com/imagedata/vehicles/g/pj54lyg_2.jpg</url>
<url>http://www.regvardy.com/imagedata/vehicles/g/pj54lyg_3.jpg</url>
</urls>
<libraryimage/>
</image>
</stock>
</usedstock>
</feed>
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Jan 22, 2008
I am trying to read from a datasource that is a CSV file using C#, but for some reason I keep getting an error that says:
System.Exception: System.Data.OleDb.OleDbException: Syntax error in FROM clause.
My code looks like this:
String sql = " SELECT IDnumber FROM report.csv WHERE username = @Username ";
ArrayList parameters = new ArrayList();
parameters.Add(new OleDbParameter("@Username", Username));
DataTable dt = OleDbUtility.getDataTable(sql, parameters, OleDbUtility.GetCNetIDConnectionString());
It worked with an Excel file, so any ideas on this one?
It seems like the connection string is fine...
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Mar 13, 2007
Brand new to SSIS so bear with me, if something is obvious.
I want to be able to read a file from a certain directory. But the file name changes every day. So today its File20061203 tomorrow File20061304 or the next day it could be FileNB4434. The format in the file will always be the same though. I just want for a user to be able to drop a file in a directory and the package pick it up once a day.
Would I have to to create a script task or could I use a variable. I have been trying to use the variable but have not been able to get them to work. This calls for only looking for 1 text file in a folder but any additional links that show some good variable examples would be appreciated. One where only part of the variable changes File(Variable)Division.txt
Thanks in advance
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Jul 21, 2007
Hello,
I'm trying to read data from xml file (i want to use this file as enviornment config file). i tried 2 methods and failed in both of them:
1.a. I loaded the XML file to the report server
1.b. I wrote a custom code for reading the XML. i got #Error
2.a. I loaded the XML file to the report server
2.b. I used XML dataset for reading the XML file.
thank you all
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Sep 2, 2007
Greetings, I have just arrived back into the country (NZ) and back into ASP.NET.
I am having trouble with the following:An attempt to attach an auto-named database for file (file location).../Database.mdf failed. A database with the same name exists, or specified file cannot be opened, or it is located on UNC share.
It has only begun since i decided i wanted to use IIS, I realise VWD comes with its own localhost, but since it is only temporary, i wanted a permanent shortcut on my desktop to link to my intranet page.
Anyone have any ideas why i am getting the above error? have searched many places on the internet and not getting any closer.
Cheers ~ J
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Sep 25, 2007
I need to know how to import a text file into a stored procedure as one big varchar. I don’t want to import the data straight into my tables. I need to be able to work with it in the stored proc.
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Jan 18, 2005
hi
I need to read a hex file, the file path is in the database, and I need to read the file from sql.
Any help would be appresiated
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Feb 7, 2002
I need to select a list of rows from excel file.
I formed my query in this way :
SELECT *
FROM OpenDataSource( 'Microsoft.Jet.OLEDB.4.0',
'Data Source="MOC02c:empest/xls";Extended properties=Excel 97-2000')...xactions
This gives an error
Error is
Server: Msg 7399, Level 16, State 1, Line 1
OLE DB provider 'Microsoft.Jet.OLEDB.4.0' reported an error.
[OLE/DB provider returned message: Could not find installable ISAM.]
If anybody knows how to read from an excel file to a query analyser , pelase reply.
Regards
Suresh
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May 25, 1999
Is there any way to read a text file with one value in it and load that value into a variable?
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Feb 20, 2004
It's probably a really easy thing to do, but I can't find out how to do it, so hopefully somebody can spare the time to help.
I want to read in T-SQL contained in a file held on disk and execute it in a stored procedure.
Anybody know how to get the contents of the text file into a variable so I can exec it ?
Thanks for your time.
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Feb 20, 2004
It's probably a really easy thing to do, but I can't find out how to do it, so hopefully somebody can spare the time to help.
I want to read in T-SQL contained in a file held on disk and execute it in a stored procedure.
Anybody know how to get the contents of the text file into a variable so I can exec it ?
Thanks for your time.
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