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.
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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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 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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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 have put a SQLDataSource on my page and everything is adjusted and it works properly. I read an article
here which was indicating that you can use a DataReader in order to get data from sqldatasource, but it doesn't say how, the only thing that is said is to use DataSourceMode property in order to adjust it for a DataReader.
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
How do I load a datareader in a defult.aspx page using while using a database connection that is defined in the web.config file?
View 3 RepliesI 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)
Dim sqlc1 As New SqlCommand("sp_navmenu 275,1,21", ERIKSDbCon)
View 4 RepliesWhen a sql query returns NULL , I can use the following code to evaluate:
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When a sql query returns nothing, neither IsDBNull nor is Nothing works. I don't know why some sql queries return null while some return nothing when there are no data returned. But anyway, can somebody tell me how to evaluate nothing value returned in sql datareader in vb.net? When I put the cursor over signInfo variable in debug mode, I can see Nothing show as its value. But the line does not work
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Any one can suggest a method to convert Datareader to dataset or any alternate method
View 7 RepliesdataTable with dataReader not working
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I would like to loop through my result set and generate a menu structure like this:
pagetitle
pagetitle
subtitle
subtitle
pagetitle
pagetitle
So far I have the following code but it doesn't generate the menu?
While reader.Read()
' set title
sitetitle = reader.Item("siteName")
mydata &= reader.Item("pagetitle")
' check subtitle exists, if so, build menu, loop though subtitles somehow?
if not IsDBNull(reader.Item("subtitle"))
mydata = "<ul>"
mydata &= "<li>" & reader.Item("subtitle") & "</li>"
mydata &= "</ul>"
end if
End while
Qeury and result set below:
sql:
SELECT subpages.subpageid, pages.pageid, sites.sitename, sites.siteid, pages.siteid,pages.pagetitle, subPages.subtitle FROM pages LEFT JOIN sites ON pages.siteid = sites.siteid LEFT JOIN subpages ON subpages.subpageid= pages.pageid WHERE sites.siteID = 1 ORDER BY sites.siteid, pages.pageid, subpages.subpageid ASC
results:
subpageid | pageid | siteid | siteid | pagetitle | subtitle
NULL 1 SCHS 1 1 Sandwell Community Healthcare Services NULL
NULL 2 SCHS 1 1 About Us NULL
NULL 3 SCHS 1 1 Your Services NULL
4 4 SCHS 1 1 Equality and Diversity Team at SCHS 1111
4 4 SCHS 1 1 Equality and Diversity Team at SCHS 2222
4 4 SCHS 1 1 Equality and Diversity Team at SCHS 333
4 4 SCHS 1 1 Equality and Diversity Team at SCHS 44444
NULL 5 SCHS 1 1 Single Equality Scheme NULL
NULL 6 SCHS 1 1 Diversity Strands NULL
NULL 7 SCHS 1 1 Equality Impact Assessments NULL
NULL 8 SCHS 1 1 Quality and Safety Committee NULL
NULL 9 SCHS 1 1 Contact Us NULL
I have used SqlDataReaders a million times. Someone, what is wrong with this code:
SqlConnection connection = new SqlConnection(connectionString);
try
{
connection.Open();
SqlCommand command = connection.CreateCommand();
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I have checked this against similar classes and it is exactly the same, but this one doesn't work.
protected void Page_Load(object sender, EventArgs e)
View 7 RepliesI have text field on a sql server table and I retrieve it on string variable using datareader : string result = reader["MyTextfied"] but I have this errors ( text or binary field cannot be troncated ) My text fied contains a large of text
View 5 Repliesi have a datareader who read from data field from sql server, this field is datetime format now, when this field is null it returns 01/01/1900!! how can i manage it without if or some check, is there a property in datareader or sqlserver properties who i can return null value from datetime field?
View 4 RepliesI use a SqlDataReader to get fron sqlServer a row af a table. This table have a text field where I store a Xml configuration. In one case this Xml grow up to 650Kb. When I get the field from the datareader it cost amost 2 seconds:
INFO 2010-04-16 09:46:40,559 [12] Cms.dataContenido - readed
INFO 2010-04-16 09:46:42,356 [12] Cms.dataContenido - XMLContent
This is my code:
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I'm Using a DataReader to Read about 100,000 records, my code look like :
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I have a per row computation in reading the rows on GetMyType2Info() method, and this method also another method that I return only one record by ExecuteReader(). the problem is that when the MyTypeList (List<T>) has about 21,000 Items of MyType (<T>) System.OutOfMemoryException is thrown. wanted to know how to resolve this and wanted to know more about the maximum size of List<T> capacity. in addition the execution of the main Query with 100,000 records take about 4 seconds in SQLServer a record has only types of nvarchar , float,datetime and int
This is the code i am used for fetching data from DB2 server (windows based server)In the same server tables created by me is working fine...eg:
oCommand.CommandText = "SELECT * from DEB.TESTUSER";
below is a table created by another application but the data reader is not working with this query ( table in the same server with same DB as above)
oCommand.CommandText = "SELECT * FROM DEB.RULE_GROUP";
If any permission or any other things i want to check .....i mean security related.....odbcadapter is also working fine....pls help regarding the datareader.....below is the complete code......
private void btnSelectRecord_Click(object sender, EventArgs e)
{
OdbcConnection oConnection = null;
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SqlConnection conn = new SqlConnection("Persist Security Info=True;Data Source="+txtdatasource.Text+";database="+txtDBName.Text+"; User ID="+txtDBUsername.Text+";password="+txtDBPass.Text);
conn.Open();
SqlCommand cmd =new SqlCommand("SELECT [ItemCode],[ClientDescription] FROM ["+txtDBName.Text+"].[dbo].[Bookings]");
cmd.ExecuteNonQuery();
This gets the folowing error ExecuteNonQuery: Connection property has not been initialized. i know it connects to the database
i have some websites and one part of all websites is the same and it work with dataset i got an ide to creat a code projrct to handel that part and i use it in all websites the problem is the websites not use the same connectionstring but the connectionstring name can be same. i need to set this code project to read the connectiostring from the website web.config file.
View 6 Replies
