Need Sample Code In C# To Connect To Sql Database
Apr 8, 2004
hi,
i learn by practice and i would like an asp code using c# that connects to sql database can retrives information from a table.
can you please copy paste me some code or give me exact link a?
thank you
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Mar 28, 2006
Hi
Books online mention the existence of sample code for several custom tasks, including the one mentioned in the title. But, when I try to find this code in the location mentioned it is nowhere to be found.
I have run a search on the rest of my drive and come up empty.
Can anyone tell me where to find this?
Thanks
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Apr 11, 2006
Hi I am trying to open a database connection to a Northwind database. I can open it with a datasource control and return data to a gridview, but can't programically. I get a sqlexception error. this is ust for learning.
Protected Sub Button1_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles Button1.Click Dim S As New SqlConnection Dim builder As New SqlConnectionStringBuilder builder("Data Source") = ".SQLEXPRESS;AttachDbFilename=C:SQLNORTHWND.MDF" builder("Integrated Security") = True builder("Connect Timeout") = 30 builder("User Instance") = True S.ConnectionString = builder.ConnectionString Me.Label1.Text = S.ConnectionString S.Open() Me.Label2.Text = S.State.ToString S.Close() Me.Label3.Text = Me.SqlDataSource1.ConnectionString.ToString End Sub
The text in label2 and Label three are identical except there are "" around the datasource.
How come I can connect through the datasource control but not through code?
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Mar 28, 2006
Hi,
I neew a small sample code in VB.NET to create a custom data flow component for SSIS.
All the examples I was able to find it are in C#.
Answer very apreciated.
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Dec 9, 2003
hi,
Does anyone have any sample code for using ntext data type, when inserting or reading big block of texts? How can you read a big huge block of text back into c#?
thx
-Philip
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Nov 2, 2006
This is a sample code from an MSDN help site. I copied it and pasted into an open new query. I tried to execute it and got two errors:
USE AdventureWorks;
GO
DECLARE @tablename sysname
SET @tablename = N'Person.AddressType'
table_loop:
IF (@@FETCH_STATUS <> -2)
BEGIN
SELECT @tablename = RTRIM(UPPER(@tablename))
EXEC ('SELECT ''' + @tablename + ''' = COUNT(*) FROM '
+ @tablename )
PRINT ' '
END
FETCH NEXT FROM tnames_cursor INTO @tablename
IF (@@FETCH_STATUS <> -1) GOTO table_loop
GO
The errors are:
Msg 208, Level 16, State 1, Line 1
Invalid object name 'PERSON.ADDRESSTYPE'.
Msg 16916, Level 16, State 1, Line 9
A cursor with the name 'tnames_cursor' does not exist
The database is connected. Table Person.AddressType is a part of it.
What is wrong?
Thanks.
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Dec 20, 2007
I was thinking of using a CTE to return history, have you ever done this?
I know this can be done in other ways but I wanted to wrap this CTE in a view so people could join to it.
Here is an example table:
KEY ASOFDATE
A 1/1/2007
A 3/1/2007
B 1/1/2007
B 2/5/2007
B 3/6/2007
I want the results to look like:
KEY START END
A 1/1/2007 3/1/2007
A 3/1/2007 NULL
B 1/1/2007 2/5/2007
B 2/5/2007 3/6/2007
B 3/6/2007 NULL
This would be even better:
ID KEY ASOFDATE
1 A 1/1/2007
2 A 3/1/2007
3 B 1/1/2007
4 B 2/5/2007
5 B 3/6/2007
I want the results to look like:
ID KEY START END
1 A 1/1/2007 3/1/2007
2 A 3/1/2007 NULL
3 B 1/1/2007 2/5/2007
4 B 2/5/2007 3/6/2007
5 B 3/6/2007 NULL
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Apr 18, 2008
Hi,
If somebody have worked on providing the code for the selection of delivery method and delivery schedule page in aspx . Then please share it with me. I am working on creating a Subscription page using aspx rather then reporting services page.
Please let me know if there are any controls provided by reporting services or some 3rd party for this.
Thanks & Regards,
Sam
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Nov 28, 2006
Does anyone know where to find a simple sample showing you how to use asp.net 2.0 with the login control to direct you to another aspx page using SQL 2000 as the database on a hosted server? I have been beating my head against the wall trying to figure this out and would be very appreciative if anyone knows a place out there that shows this? I can find many sites that show you how to do this with SQL 2005, but not SQL 2000. Thanks - Chris
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Oct 2, 2006
I am trying to write a ssis surrogate key data transform, my problem is I can't find an example how to add a column to the incoming columns and add some data to it. If anyone has a sample, can you please post it. I found a script option that works but I would like an actual transform.
Thanks
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Jun 27, 2007
I am looking for some examples of code for an appliction which will let run RS reports from a custom application. The user will choose the reports from a menu structure
We have an exiting application which we use to run crystal reports which we are going to be migrating to RS. We use custom web controls to capture the required parameter values for the reports, and hope to reuse the same controls (with minimal rework) to capture the parameters values for the RS reports.
What I am after is some code which will
a) let me run the report and display it. I don't want to display the report parameters in the URL etc as we generate some report parameter values based upon the user's ID and do NOT want them displayed back to the users
b) export the report to PDF, CSV etc depending upon the option chosen by the user.
The application will be developed in VS 2005 - VB. Does any one know of some links to some sample code
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Mar 26, 2007
Hi, there;
I try to import data from ODBC using C# programmatically. Is there any sample code we can have a look. Like how to read schema from ODBC source table and then create source column...
Thanks
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May 15, 2007
Greetings,
I have been developing VBA apps in Access and Excel for sometime and am fairly proficient in VBA. Now we are moving all of our data to SQL Server 2005. I am in need of learning how to write code for the Script Component of a data flow task. And so I have a couple of questions.
First, are there any books you recommend for learning ???? (I'm not even sure what I need to learn: .NET? ADO.NET?)
And as a follow-up, any good websites that provide good reference documentation?
And my second question is more specific to my current problem. If I had a bit of code to get me started, I'm sure I could scream all the way to the bottom of the hill.
Data source is coming from a sort task where the data is sorted by STATUS and then MOD_DATE and the AUDIT_ID.
I need to read each row and compare it to the next row. If STATUS is the same, discard the second row.
When STATUS is different, send the first row to the output (to be used by the next task in the data flow).
Using the "different" row from step 3, go to step 2.
I know how to write if statements, case statements, for/next statements. I'm just not understanding how to read the rows in and then send them back out. I've been searching for some sample code but everything I find tends to be solving much bigger issues.
Any help you can provide would be much appreciated.
Rob
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Feb 23, 2007
Hi All,
Are there samples for working with Inegration Service ?
As I see in shipped samples are C# and VB only.
Particulary I need a C++ code for "Enumerating Available Packages Programmatically"
Thanks a lot.
Sergiy
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Jul 28, 2005
In the "Example: Detecting a Poison Message" section, it reads: This Transact-SQL example shows a simple, stateless service that includes logic for handling poison messages. Before the stored procedure receives a message, the procedure saves the transaction. When the procedure cannot process a message, the procedure rolls the transaction back to the save point. The partial rollback returns the message to the queue while continuing to hold a lock on the conversation group for the message.
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Aug 18, 2007
Is there any sample code to demo the SSB send messages with same sql instance?
my case is very simple:
I want write a stored procedure to send a xml to another database. The stored procedure is called by tables triggers when some data is changed under the specific conditions.
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Apr 16, 2007
hi
How to upload excel data to sql server 2000 thorugh .net application.
I want like one upload button should be there,we have to browese corresponding excel file and then we need to upload to database.
before uploading it has to ask appending or replace everything in table.
both options appending and replacing shoulb be there.
How to upload ?
any sample code is there plz give me.
Please help me.
Thanks.
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Jul 11, 2006
After much work and thanks to all of you who helped on this here is a code sample that can be adapted. From the dataflow task add an OLEDB source component, a row count component and finally a Script Destination Component.
On the Script Destination Component rename the Input node of the imports and outputs tree view to "ParsedInput"
The readonly User: variables that start with gs can be read in the PreExecute method
The readwrite User: variable giSuccessCount can only be used in the post execute task because it is populated by the Row Count Component which is the previous object in the Dataflow
The xml code is adapted from an idea in Donald Farmers book
enjoy
Dave
Now if someone can make a Script Source Component that can read a file with a header , data body and trailer that would b egreat!
' Microsoft SQL Server Integration Services user script component
' This is your new script component in Microsoft Visual Basic .NET
' ScriptMain is the entrypoint class for script components
Imports System
Imports System.Data
Imports System.Math
Imports System.IO
Imports Microsoft.SqlServer.Dts.Pipeline.Wrapper
Imports Microsoft.SqlServer.Dts.Runtime.Wrapper
Imports System.Xml
Public Class ScriptMain
Inherits UserComponent
Dim sw As StreamWriter
'In addition to using the Imports System.Xml statement a reference must be added to the
'System.Xml assembly (Select Project-Add Reference from IDE)
Dim xWriter As XmlTextWriter
Dim OutputFileType As String '.csv or .xml
Public Overrides Sub PreExecute()
'Read Only variables
Dim gsPickUp As String = Me.Variables.gsPickUp 'D:ftprootOutAvid'
Dim gsPickUpFilename As String = Me.Variables.gsPickUpFilename '1_AVID_'
Dim gsPickUpFileExtn As String = Me.Variables.gsPickUpFileExtn '.csv'
Dim gsMemoText As String = Me.Variables.gsMemoText 'Memo Text : credit adjustment'
Dim gsStatementText As String = Me.Variables.gsStatementText 'Statment Text : credit adjustment'
Dim gsRunMode As String = Me.Variables.gsRunMode 'UPDATE'
Dim fileName As String = gsPickUp & "" & gsPickUpFilename
fileName = fileName & (Format(Now(), "yyMMdd").ToString)
'MsgBox(fileName)
OutputFileType = gsPickUpFileExtn
If OutputFileType = ".csv" Then
fileName = fileName & gsPickUpFileExtn
sw = New StreamWriter(fileName) 'connection to dest file
'Header records
sw.Write(gsRunMode)
sw.Write(Environment.NewLine) ' end of line
sw.Write(gsMemoText)
sw.Write(Environment.NewLine)
sw.Write(gsStatementText)
sw.Write(Environment.NewLine)
sw.Write(Environment.NewLine) 'Spacer
End If
If OutputFileType = ".xml" Then
fileName = fileName & gsPickUpFileExtn
'xWriter = New XmlTextWriter(Me.Connections.XMLConnection.ConnectionString, Nothing)
'xWriter.WriteStartDocument()
'xWriter.WriteComment("Customer file parsed using script")
'xWriter.WriteStartElement("x", "customer", "http://some.org/name")
'xWriter.WriteAttributeString("FileName", Me.Connections.XMLConnection.ConnectionString)
xWriter = New XmlTextWriter(fileName, Nothing)
xWriter.WriteStartDocument()
xWriter.WriteComment("Customer file parsed using script")
xWriter.WriteStartElement("x", "customer", "http://some.org/name")
xWriter.WriteAttributeString("FileName", fileName)
End If
End Sub
Public Overrides Sub ParsedInput_ProcessInputRow(ByVal Row As ParsedInputBuffer)
If OutputFileType = ".csv" Then
Dim delim As String = ","
sw.Write(Row.ProjectID.ToString + delim)
sw.Write(Row.TransactionRefNum.ToString + delim)
sw.Write(Row.CustomerNum.ToString + delim)
sw.Write(Row.AccountNum.ToString + delim)
sw.Write(Environment.NewLine) ' end of line
sw.Flush() 'send the stream to file
End If
If OutputFileType = ".xml" Then
xWriter.WriteStartElement("CUSTOMER")
xWriter.WriteStartElement("ProjectID")
xWriter.WriteString(Row.ProjectID.ToString)
xWriter.WriteEndElement()
xWriter.WriteStartElement("TransactionRefNum")
xWriter.WriteString(Row.TransactionRefNum.ToString)
xWriter.WriteEndElement()
xWriter.WriteStartElement("CustomerNum")
xWriter.WriteString(Row.CustomerNum.ToString)
xWriter.WriteEndElement()
xWriter.WriteStartElement("AccountNum")
xWriter.WriteString(Row.AccountNum.ToString)
xWriter.WriteEndElement()
End If
End Sub
Public Overrides Sub PostExecute()
If OutputFileType = ".csv" Then
'Create the trailer
sw.Write(Environment.NewLine) ' blank line
sw.Write("RECORD_COUNT: " & Me.Variables.giSuccessCount.ToString) 'ReadWrite Varible
sw.Write(Environment.NewLine)
sw.Flush() 'send the stream to file
'Close file
sw.Close()
End If
If OutputFileType = ".xml" Then
xWriter.WriteStartElement("RecordCount")
xWriter.WriteString(Me.Variables.giSuccessCount.ToString)
xWriter.WriteEndElement()
xWriter.WriteEndElement()
xWriter.WriteEndDocument()
xWriter.Close()
End If
End Sub
End Class
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Nov 22, 2006
Hi,
Does anybody have a working Java code sample that connects to an SQLServer 2005 database on a remote host, via the default named pipe, from a client using the SQLServer 2005 JDBC driver? Could you post it, or a pointer to it?
I've gotten java.sql DriverManager.getConnection() to work fine with TCP/IP connections before. But I'm a newbie with named pipes, and unclear on how the connection string/properties are different. I've tried to piece it together from multiple docs and threads, but haven't found sample code that quite fits my situation. I think a simple working example would best clarify the syntax.
The server is not using SQL Express. Most SQLServer configuration options are defaults; the named pipes protocol is enabled.
Thanks
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Feb 29, 2008
Im trying to use VB.net 2005 to write a sample app to access a DB. Are there any samples for this and any samples of how I go about making the DB in the first place?
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Sep 23, 2005
I'm looking for a sample database for a big company, organization,... to build my db project as a part of my db system courses. Can anybody help me?
Thanks anyway.
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Nov 21, 2005
for SQL Server 2005 express (no northwind or pubs sample databaes only adventureworks). Please correct me.
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Mar 31, 2008
i have a query that uses the adventure works sample database am working on sql server 2000 can i install this sample database to this sql2000 server?
Best Regards
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Nov 1, 2007
Hi
im a beginner in SQL. I installed SQL Server Express on my computer, but i didnt find any databases included. The institute where i go to learn SQL have plenty of databases, but students usually work on databases called AdventureWorks and GlobalToyz. I searched the web for these databases and found something but i still cant figure out what to do with it. So i was hoping if anybody could send me these databases with brief instructions on how to install it into SQL Server. Thanks in advance
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Apr 10, 2004
Having an issue where I can connect to a remote SQL Database server via enterprise manager, however using the exact same db credentials, I can't connect via the .NET SqlConnection object...
Anyone have this error? Did you ever figure it out?
The error I get is: "SQL Server does not exist or access denied."
Again... I'm using the EXACT same user name, password, port number. I've setup an alias in Client Network Utility....
The SQL Server Enterprise is running on the exact same PC as the code I'm trying to execute.
Thanks for any help!
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Dec 23, 2004
Hello everybody and happy holidays to all.
I'm new to C#, and I appologize for this basic question.
I am trying to connect to an SQL database from a very short C# program, which I found on the Microsoft site, demonstrating this subject.
Here is my setup:
Windows 2000 Professional
dotNET Framework 1.1 with sp1 installed
MSDE 2000
Note: I do not own nor do I have Visual Studio.NET of any kind installed.
Now, here is what works:
osql -E -S localhostvsdotnet
1>
And I can create and populate a database, which I called mydb.
Now, in my simple C# demo program I have this line
SqlConnection mycon = new SqlConnection("server=localhost;database=mydb;trusted_connection=true");
And the program compiles OK using "csc" command. But when I run it, I get this message:
Couldn't Open Connection to server=localhost;database=mydb;trusted_connection=true
Could anybody comment on what am I missing?
Thanks.
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Feb 26, 2006
Hello,
I am new to ASP.net. I just installed MS Sql Server and Visual Web Developer 2005 Express Edition.
Can any help with the code to connect to SQL server?
Thank you
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Apr 26, 2005
I had installed the sample database " AdventureWorks ",but i couldn't find it in SQL Server Management Studio,and I noticed than it was installed into "Microsoft SQL Server 2005 Samples" directory,but not "Microsoft SQL Server" directory,what can I do to find the datebase.
I am a beginner,and learning sqlserver by using tutorials,someone help me?
many many thanks.
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Jul 16, 2006
I install the SQL 2005 Evaluation. I selected to install samples and documentation during the installation wizard. It finished successfully but I could not find the sample databases on the SQL Management Studio. Why?
Thanks.
Joe.
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Nov 12, 2007
This question is for SQL Server 2000, SQL Server 2005, and SQL Server 2008.
I want to provide users a sample database with data and a database template which new databases created in an application will be based on. However, I don't want to use scripts to create database and other database objects and also don't want the data to be contained in other data store such as access database. I think about providing users with operating system files(mdf, ndf, log). My understanding is that database created thru attaching will follow the collation of the source. Is that a way to control the attaching so the database created thru attaching will follow the collation of the destination server?
If attaching is not a good way to handle my case, what are other possibilities?
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Feb 1, 2007
Hi All:
I'm new to using sql express 2005 as the database, so I apologize if my question is very basic.
I can connect to db through sql mngmt studio, but I don't know how to connect through application code. The authentication mode is windows. I'm having trouble with the provider in the application code.
Can someone please tell me where I can find more detailed information on available providers for sql express?
Thanks for any help, as I'm against a tight deadline.
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Apr 12, 2008
Hi all,
I have a problem...
I need a database file for a bank with info like customers, transactions and other bank stuff etc. It is for a university assignment. basically I just need to analyse, mine the data etc the info in the database
I have looked on msdn but none of they're databases are for a banking scenario.
Does anyone know of a sample bank database anywhere or does someone have one they could give to me ?
Thanks for your help in Advance
Peter
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Jun 11, 2008
I created a database using SSMS, now I want to add sample data.
What are the methods of adding sample data from the server?
Do I need to use the SQL Server client or can I use the SQL command line or query window?
Thank you,
Goldmember
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