Sql Server - How To Add A Connection To Database Not Working To Mdf
Mar 2, 2010i am adding a connection in asp.net using visual web developer to sql server database file, it's an MDF file.
when i click test connection i get this:
i am adding a connection in asp.net using visual web developer to sql server database file, it's an MDF file.
when i click test connection i get this:
This issues has been driving me nuts. I am trying to follow the tutorial on [URL] I am trying to connect to a database in Microsoft SQL Server 2008. The way I do this is by right clicking on the "Data Connections" > Add Connection. Afterwards the Add Connection window comes up, I make sure my data source is "Microsoft SQL Server (SqlClient). And, I choose a server name; the only server I can choose is DomainSQLEXPRESS. The issue is when I go down to the "Select or enter a database name" drop down box, I do not see my database listed. I have also made sure in the SQL Server Management Studio that I have given my user all the privileges for the database. I know my explanation is kind of vague, but would anyone know the reason why I would not see my database?
View 3 RepliesI recently started NOT putting code in separate file. I am using vb. I am having a problem with my database connection. The live code is working just fine....but when I try to debug locally. i get this error. connection to the database from my local visual studio is not working. A network-related or instance-specific error occurred while establishing a connection to SQL Server. The server was not found or was not accessible. Verify that the instance name is correct and that SQL Server is configured to allow remote connections. provider: Named Pipes Provider, error: 40 - Could not open a connection to SQL Server)
<%@ Page Title="" Language="VB" MasterPageFile="~/MasterPage.master" %>
<script runat="server">
Const ConnectionString As String = "Data Source=1234.database.com;Initial Catalog=database_name;Persist Security Info=True;User =user_name;Password=123456"
Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs)
Dim MyConn As New Data.SqlClient.SqlConnection(ConnectionString)
Dim cmd As New Data.SqlClient.SqlCommand("Select count (*) from Classifieds where (ClassifiedCatagory = 'Antiques')", MyConn)
cmd.Connection.Open()
Dim count As Integer = cmd.ExecuteScalar() 'this contains the number of records
Label_Antiques.Text = count
cmd.Connection.Close()
I devlopyed on asp.net application in IIS, i need to know how many current database connection is open for the database..
so how can i check how many connection are currently using for this database... if we dont want some connection how can we kill the connection
My web server and database server are currently both in the same room. However, the web server might be changed to a different server in another building about a mile down the street. I want to make sure this doesn't have a negative impact on the connection speed between the database and web server. Is there a way to test the connection speed from both web servers to the database?
View 3 RepliesI am a beginner in using Asp.NET with C# and it is my first time I am trying to establish a connection with an SQL server 2005 database: Here is my simple code to connect to the sql server database,I am getting the text message set in the label. Is my problem in the connectionString ??? how to write it and ow to get the server name and write it correctly ....or how to specify the database name (all path or just database name??)
protected void Page_Load(object sender, EventArgs e)
{
SqlConnection connection = new SqlConnection("server = Saher;Database=Database.mdf;integrated security = true");
try{
connection.Open();
}
catch{
lblMessage.Text = "COULDN'T CONNECT to Stupid database";
}finally{
connection.Close();
}
}
.net frame work. I know about few controlin .net and I have tried few programs also. Now want to learn a databaseconnection in .net so please provide me one easy example of such program.
View 2 RepliesI am new in Asp.net with Oracle and not build proper connection in it.
View 2 RepliesTo give some background details, I have created a website for a friend that has a few pages that require a database in the background. I've used Visual Studio templates for most of it, so there's the standard ASPNETDB.MDF file that's created for users and groups, a login page and a page to view and manage those users etc etc. The login page uses the standard controls for logging in, retrieving lost passwords and so on. Being standard controls, by default they get the connection string from the web.config file. Upon attempting to upload the site to my host (1and1.co.uk in case anyone else has any dealings with them) I discovered that storing the connectionstring doesn't work. 1and1 support say that the sql databases can only be accessed using scripts like this (this is an example of theirs):
<html>
<title>Queries from the MS-SQL database with ASP</title>
<body bgcolor="FFFFFF">
<h2>Query from table <b>products</b> with ASP</h2>
<%
Set conn = Server.CreateObject("ADODB.Connection")
conn.open "PROVIDER=SQLOLEDB;DATA SOURCE=mssqxxx.1and1.com;UID=dboxxxxxxxxx;PWD=xxxxxxxx;DATABASE=dbxxxxxxxxx"
'This code block will create a recordset
Set rs = Server.CreateObject("ADODB.Recordset")
SQL = "select * from products"
rs.open SQL, conn
'will iterate to display the records got from the database
While Not rs.EOF
response.write(rs("id") & " " & rs("price"))
rs.MoveNext
Wend
'closes the connection
rs.close
conn.close
Set rs = Nothing
Set conn = Nothing
%>
</body>
</html>
So my question, is it possible to get the standard asp.net controls to access a database through a script like this?
I have an asp.net web page which works with a database. When I first upload it I never disposed the connections so after using the different modules of the application for sometime it would suddenly stop working saying the connection pool filled or something like that.To fix it when a user clicked a button I opened the connection, tell the database what I needed and finally disposed the connection.
This seemed to fix everything, in fact you can work with application all you want, the problem comes if you stop using it for certain time.So for instance, I have a module in my webpage where user can capture information for a certain product. When the user clicks in one button the info gets into the database. If the user is continuosly capturing data everything works fine, but if it goes for about 10 min when he clicks the button he will receive an error. To fix this the user has to log-in again.
Every module opens a connection to the database to verify the user identity, but then after it verifies it I dispose the connection so I don't think there is a problem.
I have this following requirement.
My Web Application is hosted on Server A. My Database is hosted on Server B.
Server A and Server B are not on same network. How can i point my connection string to the database in this scenario? Can any one give an example for this kind of Connection String?
I just installed sql server 2008 R2 on my computer. I am trying to connect to sql server throught my C# code and everytime I run the C# program,
I get this error "A network-related or instance-specific error occurred while establishing a connection to SQL Server.
The server was not found or was not accessible. Verify that the instance name is correct and that SQL Server is configured to allow remote connections. (provider: Named Pipes Provider, error: 40 - Could not open a connection to SQL Server) "
The connection string that I used in my web.config file is
[Code]....
I am not sure what am I doing wrong, but I followed this article below step by step and still I am getting the same error
http://blog.sqlauthority.com/2009/05/21/sql-server-fix-error-provider-named-pipes-provider-error-40-could-not-open-a-connection-to-sql-server-microsoft-sql-server-error/
My instance name is MSSQLSERVER and the server that I am using is on my local machine and it has my computer name in it.
I am retrieving connection string based on value stored in cookie.NowI am making crystal report. I cannot hard code server credential. I have to get these credential from connection string from web.config. so that i can pass these credentials to my crystal report .
ConnectionInfo reportConnectionInfo = new ConnectionInfo();
reportConnectionInfo.ServerName = connection string server name from web.config
reportConnectionInfo.DatabaseName = connection string database name from web.config
reportConnectionInfo.UserID = ...;
reportConnectionInfo.Password = ...;
My website is working but when I host it up, the connection are all screw up. Is it because my connectionString are all linked via SqlDatasource and is for local files only? Whats the coding that I need to put in so that my site will connect to the database via accessing the web.config or server?
View 11 RepliesI am having problem when i was trying to attach .mdf file while create a new connection of SQL server, create a new connection of SQL database file and open the database in Server Explorer. I am using VS 2010 Ultimate and SQL Express 2008 R2.
Here are the error message.
1. Attach .mdf in SQL database file and open the database in Server Explorer
2. Create a new SQL server and attach .mdf
I am using VS2008 and oracle 10g ODP.Net. The oracle database that I used in the connection is working and tested it using sql plus.The connection string when used in a GriDView works perfectly. Now when I created a new listview control with the same connection it gives an error.Database schema could not be retrieved for this connection. Please make sure connection settings are correct and the database is online
Object reference not set to an instance of an object at VSDataObjectSupport (478,6)
I have VS 2010 professional. I am trying to open "ASP.Net Configuration" through Project -> ASP.Net Configuration.
It pops up the Notification about the ASP.Net Development Server localhost but doesn't open ASP.Net Configuration in the default browser.I clicked on the Root Url (by double clicking on the 'development server' at the right bottom from Notification Manager).
It throws following error
"An error was encountered. Please return to the previous page and try again."
Clicking on "How do i use this tool".It opened page with error.
Tool Has Timed Out
i have in asp.net a few textboxes and i wish to update my database with the values that they encapsulate. The problem is that it doesn't work and although it doesn't work, the syntax seems correct and there are no errors present . Here is my linkbutton:
<asp:linkbutton id="clickOnSave" runat="server"
onclick="Save_Click" Text="Save Profile" />
and my update function
protected void Save_Click(object sender, EventArgs e)
{
SqlConnection con = new System.Data.SqlClient.SqlConnection();
con.ConnectionString = "DataSource=.\SQLEXPRESS;AttachDbFilename=C:\Users\alex\Documents\seeubook_db.mdf;Integrated Security=True;Connect Timeout=30;User Instance=True";
con.Open();
String commandString = "UPDATE users SET last_name='" + Text4.Text.Trim() + "' , first_name='" + Textbox1.Text.Trim() + "' , about_me='" + Textbox5.Text.Trim() + "' , where_i_live='" + Textbox2.Text.Trim() + "' , where_i_was_born='" + Textbox3.Text.Trim() + "' , work_place='" + Textbox4.Text.Trim() + "' WHERE email='" + Session["user"] + "'";
SqlCommand sqlCmd = new SqlCommand(commandString, con);
sqlCmd.ExecuteNonQuery();
con.Close();
}
Only books and of course these books will be stored in an SQL server database at a romote host. So farhere are the tables I haveBooks.. of course, which describe each book that will shop up on the web site.. The site will have the ability to show all books or search books by author, catagory, etc,..Book_Catagories or properties or? This is something that the person I'm writing the web site for wants and he wants the ability to add a book to more than one catagory such as a theme book, first edition, autographed, etc,.. He wants to be able to add the catagory or catagories at the same time he enters the book..
View 1 RepliesI have a button click event code block in which data should be updated to my database. After stepping through the code, the ExecuteNonQuery() executes, but no data in my database is changed. I don't think there is a problem with my code although I will include it just-in-case.
[Code]....
I'm confident that my command text and my parameter adding is correct.
I have a system in which users can enter records into a database via ajax. Each user may hold many values in the database, with different pageId and itemId values. Each user is identified by a GUID set to a cookie. The system needs to prevent the user from entering two pieces of data with the same pageId and itemId, so I've created a script to do two database updates:
Firstly, all records are deleted from the database where the memberGUID, pageId and itemId fields match (i.e. they've already added this item).
Secondly, the record is then recreated.
It all works brilliantly, except when the GUID value is passed into the delete statement, then I just get a caught exception.
So this works:
[Code]....
But this doesn't:
[Code]....
The weird thing is that because the GUID value is being saved in the second database call, it is definitely there and is definitely the right data type etc. Even if I hard-code it into the delete procedure it still causes the whole thing to fail.
why it's failing when I add the GUID parameter in the deletion process?
I am trying connect to MySQL database from ASP.net code. some my connection is not working. for the below code I am getting invalied argument DRIVER.
Label1.Text = ""
Label2.Text = ""
Try
Dim conStr As New SqlClient.SqlConnection
conStr.ConnectionString = "DRIVER={MySQL ODBC 5.1 Driver};" +
"SERVER=localhost;" +
"DATABASE=aa;" +
"UID=aa;" +
"PASSWORD=aa;" +
"OPTION=3"
Response.Write("Connection string: " & conStr.ConnectionString)
conStr.Open()
If conStr.State = ConnectionState.Open Then
Label1.Text = "SQLConnection conStr is Open"
conStr.Close()
ElseIf conStr.State = ConnectionState.Closed Then
Label1.Text = "SQLConnection conStr is closed"
End If
Catch sqlxcp As SqlClient.SqlException
Label2.Text = sqlxcp.ToString
Finally
End Try
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.
I have just deployed my entire website onto my hosting provider. My databases worked fine whilst I was testing the website on the local host. They use Plesk Control Panel. Here is my connection string:
Data Source=.SQLEXPRESS;AttachDbFilename|DataDirectory|ASPNETDB.MDF";Integrated Security=True;User Instance=True (nothing is omited from this string)
Why isn't this working when the website is online? I get the error Invalid value for key 'attachdbfilename'. I have retargeted my website for .net 2.0 at the providers request because they do not support .net 4.
I have a simple .aspx page. Where I need to connect to sql server 2008 and show the records on the page in a gridviewcontrol. It will have Edit button on the gridview control. I am getting some weird message about the connection string.
Error message is:
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.ArgumentException: Keyword not supported: 'initial catalog'.
Web.config file:
Code:
<connectionStrings>
<add name="ConnectionString_SqlServer" connectionString="Data Source=PricingDB;Initial Catalog=DB1;Integrated Security=True;Connect Timeout=300" providerName="System.Data.SqlClient" />
</connectionStrings>
In the .aspx page this is how I am connecting.
Code:
<asp:SqlDataSource ID="SqlDataSource1" runat="server"
ConnectionString="<%$ ConnectionStrings:ConnectionString_SqlServer %>"
ProviderName="<%$ ConnectionStrings:ConnectionString.ProviderName %>"
SelectCommand="select name, value from dbo.Pricing order by name asc"
>
</asp:SqlDataSource>