Is it possible to use a pre-existing ConnectionString in this construction?
myConnection = New SqlConnection("server=localhost;" & "database=pubs;Trusted_Connection=Yes")
Regards -Penn
i have 5 methods in classA. each and every methods i have open the sqlconnection and close it, instead of that is there anyway to create a sqlconnection at one time if its opened then no need to create a new connection, if its closed then we have to connect.
View 5 RepliesI have a whole bunch of data access methods where in each one I am doing this
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and them moving on with my SqlCommand and SqlDataReader and so on.Is this creating to many instances of an SQLConnection?I was thinking doing this instead. Creating a SqlConnection Manager which would look like this
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and then in my database access methods
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Is this a good or bad idea and why?Also would this even be neccesary?
i am making a simple cms system
but I have a problem when updating some information
here is the code
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and in the page load everything is fine
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'SqlConnection' is not defined in the behind code as follows:
Source Error:
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Source File: I:WebsitesCMPHostFox BackupDefault.aspx.vb Line: 24
Snippet reads as follows:
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can capture return value from a SQL by using SqlConnection SqlCommand
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I'm trying to determine whether it is better to declare the connection outside with it's own using statement or to create it inside the sqlcommand itself. This is in regards to a single command interaction with the database (no loops).
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Or
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I am using "ASP .Net 2.0" with "SQL Server 2005". What is better and preffered approach towards making a sqlconnection to interect with database?
1. To open new connection each time we need to interact with DB and then close the connection
2. Or to make a shared database connection for whole web application.
I know you can point to a OnSelecting event on the aspx page datasource. But I've created my SqlDataSource in the code behind. Is there any way to point to a selecting event in the code behind (I need this to provide the parameters)? Or should I just include all my logic in the Page_Load event (where I keep my SqlConnection)Here's what I have so far:
protected void Page_Load(object sender, EventArgs e)
{
SqlCommand myCommand = new SqlCommand();
[code]...
I have 2 connection strings in my web.config file, and I would like to select which one to use, from code.Currently I have this:
asp:SqlDataSource
ID="SqlDataSourceDelegateServices"
runat="server"
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i am trying to call a SP from SQL Server in asp.net app, but it keep crashing every time it hit
'cmd.Connection.Open();' ,,, it give me this message
"The ConnectionString property has not been initialized "
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why this first connection works but the second doesn't?
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I'm trying to use <asp:FileUpload> to upload images and as far as I know you have to use <asp:SqlDataSource> to do it but I need to create the connections string using entries stored in a database.
In my project i use in webconfig
<appSettings> add
key="ConnectionString"
value="server=192.168.0.1;database=database;uid=usr;pwd=;"/>
</appSettings>
Use this key on .vb page -
Public constr As
String = ConfigurationSettings.AppSettings("ConnectionString")
dim cnn As new SqlConnection(constr)
Now i need to create conditional report where user select parameters from Dropdownlist and based on that Report is generate on web page. I tried so much with the help of
http://www.aspfree.com/c/a/ASP.NET/Binding-Data-to-the-ReportViewer-Control-Dynamically-in-ASPNET-20/1/ article but noluck. The data is display when i select the SELECT query from wizard while add dataset, but i want to do it dynamically coz webserver is located somewher else. Configuration is MSSQL server 2000, W2K3, VS 2005 Professional.
I did a Crystalreport projects with vb6 with ado but i really dont know how to exactly dynamically generate conditional report in Reportviewer.
I want to setup the connectionstring of the SqlDatasource of a dropdown list at runtime, eg. Page Load event. I have install MySQl ODBC driver, System DSN name as "MySQL_Employee" If I have an entry in Web.config:
<connectionStrings>
<add name="mysqlConnection" connectionString="DSN=MySQL_Employee;UID=john;description=connection to employee database;server=empServer;database=employee;port=3306;" providerName="System.Data.Odbc"/>
</connectionStrings>
my web-app working well locally, but since i uploaded it and my DB, i keep receiving this Error :
Login failed for user 'XXXXX'.
Description:
An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.
Exception Details: System.Data.SqlClient.SqlException: Login failed for user 'XXXX'.
Source Error:
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Stack Trace:
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[SqlException (0x80131904): Login failed for user 'XXXXX'.] System.Data.SqlClient.SqlInternalConnection.OnError(SqlException exception, Boolean breakConnection) +4846887 System.Data.SqlClient.TdsParser.ThrowExceptionAndWarning(TdsParserStateObject stateObj) +194 System.Data.SqlClient.TdsParser.Run(RunBehavior runBehavior, SqlCommand cmdHandler, SqlDataReader dataStream, BulkCopySimpleResultSet bulkCopyHandler, TdsParserStateObject stateObj) +2392 System.Data.SqlClient.SqlInternalConnectionTds.CompleteLogin(Boolean enlistOK) +35 System.Data.SqlClient.SqlInternalConnectionTds.AttemptOneLogin(ServerInfo serverInfo, String newPassword, Boolean ignoreSniOpenTimeout, Int64 timerExpire, SqlConnection owningObject) +144 System.Data.SqlClient.SqlInternalConnectionTds.LoginNoFailover(String host, String newPassword, Boolean redirectedUserInstance, SqlConnection owningObject, SqlConnectionString connectionOptions, Int64 timerStart) +342 System.Data.SqlClient.SqlInternalConnectionTds.OpenLoginEnlist(SqlConnection owningObject, SqlConnectionString connectionOptions, String newPassword, Boolean redirectedUserInstance) +221 System.Data.SqlClient.SqlInternalConnectionTds..ctor(DbConnectionPoolIdentity identity, SqlConnectionString connectionOptions, Object providerInfo, String newPassword, SqlConnection owningObject, Boolean redirectedUserInstance) +189 System.Data.SqlClient.SqlConnectionFactory.CreateConnection(DbConnectionOptions options, Object poolGroupProviderInfo, DbConnectionPool pool, DbConnection owningConnection) +185 System.Data.ProviderBase.DbConnectionFactory.CreatePooledConnection(DbConnection owningConnection, DbConnectionPool pool, DbConnectionOptions options) +31 System.Data.ProviderBase.DbConnectionPool.CreateObject(DbConnection owningObject) +433 System.Data.ProviderBase.DbConnectionPool.UserCreateRequest(DbConnection owningObject) +66 System.Data.ProviderBase.DbConnectionPool.GetConnection(DbConnection owningObject) +499 System.Data.ProviderBase.DbConnectionFactory.GetConnection(DbConnection owningConnection) +65 System.Data.ProviderBase.DbConnectionClosed.OpenConnection(DbConnection outerConnection, DbConnectionFactory connectionFactory) +117 System.Data.SqlClient.SqlConnection.Open() +122 news.dg_bind() +95 news.Page_Load(Object sender, EventArgs e) +5 System.Web.Util.CalliHelper.EventArgFunctionCaller(IntPtr fp, Object o, Object t, EventArgs e) +14 System.Web.Util.CalliEventHandlerDelegateProxy.Callback(Object sender, EventArgs e) +35 System.Web.UI.Control.OnLoad(EventArgs e) +99 System.Web.UI.Control.LoadRecursive() +50 System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +627
Version Information: Microsoft .NET Framework Version:2.0.50727.3603; ASP.NET Version:2.0.50727.3082
I checked my Username , Password and its Permissions for thousands time, and everything seems to be alright. I developed the Website by ASP.Net / C# (VS2008) and SQLServer2008 and I guess the problem is with ConnectionString, below you can find my ConnectionString:
Server=(local)SQLEXPRESS;User ID=myusername;password=mypass;Database=mydb;Persist Security Info=True
I encrypted my connectionstring and store at web.config file. Then I bind Gridview with sqldatasource control, cannot bind because of sqldatasource don't know the(encrypted) connectionstring.
View 5 RepliesI'm trying to set up a simple content management system for two different sites, which are both stored on the same server (my own, not hosting, if it matters:)).
Both sites are basically the same, built upon a similar (but seperate) xsd (Typed DataSet) file, and read data from different databases using the tableadapters in the xsds.
Obviously, i have the same xsd setup in my management system application that need to hook up to the relevant database (after user authentication) and use the tableadapters to access the data and allow the forms in the management system to modify the data.
When i had a single site, the connection string was stored in the web.config file and after logging in to the management system, all forms could access the database.
Now i have two site and i need to setup the connection string in the xsd dynamically after user validation based on the relevant site to edit.
My question is, how do i set the xsd's connection string dynamically (after user logs in, the function returns the specific connectionstring and stores it in a Session variable)
'i'm working with visual studio 2005 asp.net c#. and i want to bind my website to my database with the "sqlConnection"
how do i get and set details from the database to the website fields with the sqlCommend and ect...
I am using vs 2005, I have below connection string in web.config.
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am having problems creating this;1. How to create a add a connectionstring to my web config fileThis is the connection string I have entered
Datasource=.SQLWEXPRESS; attachDb filename=c:inetpubwwwrootdevelopment_ecommerceApp dataextratime.mdf;integrated security=true; user instance true
I have tried to enter this as well
<connectionStrings>
<add name="development_Ecommerce" connectionString="Data Source=smbc-652263fbfaSQLEXPRESS;Inital Catalogue=extratime; Integrated Security=True" providerName="System.Data.SqlClient"/>
[code]...
i would like to know if there's something wrong in this asp.net code:
mydatareader = mycmd.executeReader()
if myDataReader.HasRow then
// Do something
end if
myConnection.Close()
If i avoid to call a "MyDataReader.Close()" does the connection close anyway ? I ask this because i'm assuming that if call a "MyConn.Close" it automatically close the associated datareader... or am i wrong ?
I have th following code:
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I got any error from the code, saying 'not all code path return a value', i suspect it is the catch block doesnt return a value. If so, what value should i return?
When i connection on database Microsoft SqlServer 2008 By This code.
Code:
SqlConnection cnn = new SqlConnection(ConfigurationManager.ConnectionStrings["myconnection"].ConnectionString);
SqlCommand cmd = new SqlCommand("select * from [City]", cnn);
cnn.Open();
Code In configration Manager
Code:
<add name="myconnection" connectionString="Data Source=.;Initial Catalog=db;Integrated Security=True;User Instance=True"
providerName="System.Data.SqlClient" />
found this Sql Exception:
The user instance login flag is not supported on this version of SQL Server. The connection will be closed. what is problem?
I always use SqlConnection() To open a connection then use the connection to interact database. But I have heard somewhere that opening SQLconnection() take a time. and if on different pages of projects I repeatedly Connect database then It will take long access time always. So I want to know that if there is any other methods which don't use the SQLConnection to interact database and increase the response time of database.
View 1 Repliesso i have the function below in a webservice. and it works, but when i try to copy it to aspx page code behind, i get the message in the subject. Can someone tell me if the function below is valid? One of my project uses it and it works.
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