I am using a AccessDatasource for getting values from a accessdatabase for a Dropdown list. After i load the page and close it, a .ldb file is created. After wards i am not able to open the database manually. How to close the connection. I have given Network service Modify access [URL] to share permission, still no go.
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i have a web application that use a MySql DataBase. In a page, i have used the sqlDatasource control. The problem is that the conection with the database doesn't closed and i have a lot of open conections until show me the error that says me that the conection pool is full.
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I'm trying to make sure a block of code behind properly closes a connection to SQL after it's finished. But when I add the line "cmd.Connection.Close();" Visual Studio underlines "cmd" in green and says "unreachable code detected" What does that mean and how do I correct it?
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This morning I found myself dealing with A SQL POOLING ERROR Timeout expired. The timeout period elapsed prior to obtaining a connection from the pool. This may have occurred because all pooled connections were in use and max pool size was reached. I did fix this with resetting my pooling and setting a pooling max =100 Anyway now Im starting to rethink how I open connections, dealing with errors and proper closing of connections Would you say this code below is a good way of opening, closing connections (even when errors occurred)
Dim Connection As SqlConnection
Dim myConn As String = (ConfigurationManager.ConnectionStrings("MyConnString").ConnectionString)
Connection = New SqlConnection(myConn)
Try
Dim DBCommand As SqlCommand
Dim dt As New DataTable()
Dim myDataSet As New DataSet
Connection.Open()
DBCommand = New SqlCommand("GetAllCategories_", Connection)
DBCommand.CommandType = CommandType.StoredProcedure
DBCommand.Parameters.Add("@HomePageID", SqlDbType.Int).Value = HiddenChosenVirtualMainID.Value
Dim mySqlAdapter As New SqlDataAdapter(DBCommand)
mySqlAdapter.Fill(dt)
SecondLevelChildDatalist.DataSource = dt
SecondLevelChildDatalist.DataBind()
Catch ex As Exception
'Error goes here
SqlConnection.ClearAllPools()
Finally
'close the connction
Connection.Close()
Connection.Dispose()
End Try
I have written a routine to delete a record from a table. I want to include a statement to 'close' the connection to the table but I do not know the syntex of the statement that will do this. My code is as follows:
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I am developing logging application with asp.net & vb.net & OracleAt present I'm using this mechanism to write logs
Method1 Connect (
Try{
Conn.open ()
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I am using a adapted version ofhttp://www.mikesdotnetting.com/Article/45/Programmatically-accessing-data-from-DataSource-controlsDon't we need something like a closing-routine / close connection command after getting data from the database?If yes: What is the correct closing command?
View 2 RepliesI was wondering about something. I'm supporting a .NET C# application which has a number of database connections declared locally as IDbConnection with MS SQL Server and NHibernate. These connections are declared locally and not explicitly closed after a specific operation is performed. Are these connections automatically closed after the local method is executed, or could these connections be floating around somewhere? We're having semaphore max out problems, and I'm trying to see if this may be the culprit. I'm doubtful, as I believe these connections would automatically close, but thought I'd throw out hte possibility.
View 1 Repliesjust for my testing purpose i know i can define both the connection's outside in a single web config file by different name's and access them in my front end according to it but what if i want to have seprate for both connection's web.config situation is like this see image so i want to access my connections from second web config file how i can do that.
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i tired this but its giving error
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In my DAL i have more than 100 methods/Function, each and every method am opening the sqlconnection and closing the connection, this is taking too much of time to establish the connection at every time. So what i expect is one common class will create the SqlConnection that will check if the connection is Broken or Closed then create the connection again else return the connection, how to do this(Also i would like to apply ConnectionPooling).
View 7 RepliesI just upgraded from VWD 200t to VWD 2010. I'm now seeing an error message that I never saw before. Error is: 'Text is not allowed between the opening and closing tags for element SqlDataSource'
Here is my HTML:
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There is a green squiggly line under SqlDataSource, here:
asp:SqlDataSource ID="SqlDataSource2"
I have a similar problem here:
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Like above, there is a green squiggly line under SqlDataSource, here:
asp:SqlDataSource ID="SqlDataSource3"
I have got a small website with MS Access Database. I have used access membership provide with it. i bought hosting with Discountasp.net when i uplaoded my web to the server it gives me following error. It works perfect on my local machine.
i have contacted the support guys they say there is somthing worng with my web config there is nothing pointing to sql server in my web config. here is my error message. I have a hosting with iis 6 it does work on that but it does not with with iis7.
Server Error in '/' Application.
Configuration Error
Description:
An error occurred during the processing of a configuration file required to service this request. Please review the specific error details below and modify your configuration file appropriately.
Parser Error Message: The connection name 'LocalSqlServer' was not found in the applications configuration or the connection string is empty.
Source Error:
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Line 158: <roleManager>Line 159: <providers>Line 160: <add name="AspNetSqlRoleProvider" connectionStringName="LocalSqlServer" applicationName="/" type="System.Web.Security.SqlRoleProvider, System.Web, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a"/>Line 161: <add name="AspNetWindowsTokenRoleProvider" applicationName="/" type="System.Web.Security.WindowsTokenRoleProvider, System.Web, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a"/>Line 162: </providers>
Source File: C:WindowsMicrosoft.NETFrameworkv2.0.50727Configmachine.config Line:
160
Version Information: Microsoft .NET Framework Version:2.0.50727.4016; ASP.NET Version:2.0.50727.4016
I'm having a terrible time being able to connect my access database to my website. I'm using 1and1.com as my host. The database resides in my App_Data folder. I checked everything I could think of on the host side. I cannot query from the database through VWD Express nor create a typed dataset .xsd that will allow quering the database.p.s. - I don't need any sophisticated security on the database, just a homegrown sign in I put together that works fine for my site which is mostly xml file data.
View 10 RepliesI have several web forms which use a GridView linked to a DataSource control which is defined at design time as follows:
<cc1:pgsqldatasource
id="dsStates"
runat="server"
connectionstring="<%$ ConnectionStrings:PgSqlConnection %>"
oldvaluesparameterformatstring="Original_{0}"
providername="<%$ ConnectionStrings:PgSqlConnection.ProviderName %>" >
</cc1:pgsqldatasource>
As you can see, the connectionstring parameter is defined to a specific connection string name and I need to be able to set such a parameter to a different value, for example, to a session variable content.
i am trying to create connection using OLEDB connection in my app. but i am not able to create the connection as in datasource i want to use Server.mappath, but cudn't find the right method to use it. i am trying to make connection with Access database file. following is code i have tried:
string path = Server.MapPath("~/uploadaccess/Production.mdb");
string ConnectionString = @"Provider=Microsoft.Jet.OLEDB.4.0; Data Source=" & Server.MapPath("~/uploadaccess/Production.mdb")&";";
and also
OleDbConnection myConnection = new OleDbConnection("Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" & path&";");
and tried this
OleDbConnection myConnection = new OleDbConnection("Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" & Server.MapPath("~/uploadaccess/Production.mdb"));
and this is the error i am getting:
Operator '&' cannot be applied to operands of type 'string' and 'string'
How can i get ConnectionString In web.Config when you are in DAL(data access layer)Some said it should me in <appSetting> but i think this is not appropriate to do because web.config have dedicate tag for connection strings.i am creating a 3 tier each layers is a project in 1 solution
Project ://solution
|_View :WebApp // Dependence (BLL,ENTITY )
|_BLL : ClassLib // Dependence (DAL,ENTITY )
|_DAL : ClassLib // Dependence (ENTITY )
|_ENTITY : ClassLib //note this is not a layes just a central data object reference
I have created a website (VB) on my local host. A couple of pages on this website use gridviews or detailsviews with an AccessDataSource connection to a MS Access database. This works perfectly. But now I want to move this website to a hosting provider. And on this hosting provider my website works well but not the pages with a connection to the Access database. I searched the whole internet for a solution but I didn't found it.
Folder structure on the host:
- db > Access databases (name: testdemo.mdb)
- logs
-wwwroot > website (for example, the gridview is placed on index.aspx).
I think AccessDataSource didn't work, but what kind of code may I use in the index.aspx and web.config? My hosting provider said only, use a direct link to the database and not a relative, for example: E:xxx.comdb estdemo.mdb
I need help with changing this DSN to a DSN less var connection .whenever i use the dsnless connection i get an error since the String connTaftPrjPic is reused in the code.The Objective is to change to a DSN Less connection without affecting the connTaftPrjPic.
<%
// FileName="Connection_odbc_conn_dsn.htm"
// Type="ADO"
// DesigntimeType="ADO" [code]....
I'm using Visual Studio 2008, and my database is SQL Server 2000.
I want to add a connection to the Server Explorer in VS. The Data source is Microsoft SQL Server (SqlClient). After entering in all my information and I click Test Connection, it is successful.
But when I click OK, I get the error:
Unable to add data connection. ExecuteScalar requires an open and available connection. The connection's current state is closed.
In IIS 7 you can create database connection strings. I suppose this must be encrypted and best protected by IIS. This is nice, but how do I access it programmatically?
View 7 RepliesSomehow I deleted my App_Data folder and had to recreate it... it only had one database in it ... an Access Database. My .aspx pages that use the DB are giving permission errors when they load... I can't find anyplace in my DB or on my VWD Express where I can set the permissions (nor on my hosting service).
View 16 RepliesI want to add connection string to connect to mysql in web.config and access the same in my code c# how can i do this?
here is my code onclick of a button to connect to database.
protected void Button2_Click(object sender, EventArgs e)
{
String a = DropDownList1.SelectedItem.Value;
String b = DropDownList3.SelectedItem.Value.PadLeft(3, '0');
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Iam using vwd2008 C# and an MSaccess database and have tried to connect to the database using SQLDatasource.The code example is as follows:
<%@ Page Language="VB" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
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I've got an ASP.NET web project which connect to an SQL Server 2005 DataBase.I think that I'm doing the part of the database connection awfull because everytime I need to do a query (select for example) I'm creating a new connection, opening the connection, creating the command, executing the query, using the results and closing the connection.
Is the rigth way to open a connection in the start of the application and closing at the end?? How can I do that?? I'm retrieving data but what will happen to database server when the application will be used by many people?
i have made a project that has an access database.
i have manage to connect and retrive data from the database at aspx and at code behind.
the problem is that i do not want to write the connection string at code behind again and again but to get it from the web.config as i am doing to the aspx pages.
this is what i do at aspx pages:
<add name="dataConnectionString" connectionString="Provider=Microsoft.Jet.OLEDB.4.0;Data Source=|DataDirectory|data.mdb;Jet OLEDB:Database Password=data
@123" providerName="System.Data.OleDb"/>
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