connection-string

问题 I'm trying to create a program in C# that should be able to create, backup and restore a SQL Server database. For this, the user needs to be able to setup a connection string to the desired SQL Server (and database). I would like to use the same dialog as for example Visual Studio for creating the connection string. Is this possible? 回答1: Note: The dialog component referred to below is no longer available for download. Unless you have retrieved it in the past, you will probably not get this

问题 I have problem while connecting to mysql database using "ADO.NET Driver for MySQL (Connector/NET)" I got this exception The given key was not present in the dictionary. Edit: MySqlConnection con = new MySqlConnection("Server=localhost;Database=pgs_db;Uid=root;Pwd=;"); MySqlCommand com = new MySqlCommand(); com.CommandType = CommandType.StoredProcedure; com.Connection = con; com.CommandText = "getStudent"; con.Open(); MySqlDataReader dr =com.ExecuteReader(); GridView1.DataSource = dr;

问题 What is connection string for the following SQL server 2008 properties: DB Name : testDB 回答1: Try this connection string: Server=K-PC;Database=testDB;Trusted_Connection=True; You can find more details on connection strings in this link: http://www.connectionstrings.com/sql-server/ 来源： https://stackoverflow.com/questions/24851744/webconfig-connectionstring-to-connect-sql-server-2008-from-visual-studio-2012

问题 Hi I am working on ASP.NET MVC project. Currently I am using Model first approach, where i used to add database manually by using ADO.NET model. Currently I have 4 database and I have 4 connection strings in web.config file. It was fine till now, since I was working on development environment. But now I need to move my code to live and problem is, in live we have like 40 to 50 databases. So what I should do is, generate connection string dynamically when user wants to connect to particular

问题 I have had a project where SQL Server and development all worked locally. The following connection string was used: SqlConnection connection= new SqlConnection("Data Source=.\\MYDB;Initial Catalog=Database;Integrated Security=true"); connection.Open(); My development team is now growing and I am looking to have another developer access this same database. He will need to alter this connection string and we are trying to workout what to change in the string - so far we have tried:

问题 I've successfully mapped an Entity Framework Code-First data model with an existing Sql Server Compact database by a declarative approach using app.config but it would be great if I could build such connection programmatically with perhaps the help of the EntityConnectionStringBuilder (System.Data.EntityClient) class. Unfortunately this approach is not working as the [DbContext].Connection.ConnectionString is not accepting most of its properties. Here's the actual working code with the faulty

问题 I'm trying to open a connection to a MySql database using the following code piece: string connectionString = "Server=ip_number;Database=database_name;Uid=uid;Password=password"; MySqlConnection connection; connection = new MySqlConnection(connectionString); connection.Open(); And here is the exception I get: I'm using the latest mysql connector (downloaded from here). What am I missing? Thanks in advance, 回答1: May you try this: Connection to server: string connectionString= "datasource

问题 I'm trying to open a connection to a MySql database using the following code piece: string connectionString = "Server=ip_number;Database=database_name;Uid=uid;Password=password"; MySqlConnection connection; connection = new MySqlConnection(connectionString); connection.Open(); And here is the exception I get: I'm using the latest mysql connector (downloaded from here). What am I missing? Thanks in advance, 回答1: May you try this: Connection to server: string connectionString= "datasource

问题 First, I try to connect to sql server of other computer(PC1-PC\Instance1) through ssms with Windows Authentication but got this error Login failed. The login is from an untrusted domain and cannot be used with Windows authentication. I resolve the error when I edit the password of sa to 1234 in PC1-PC\Instance1. Then connect in the ssms with SQL Server Authentication. And successfully connected. The problem is in my Winforms app config, I set the connection to this: <connectionStrings> <add

问题 I am writing an client application in C# which will be supposed to change ConnectionString settings in a web.config file from another application I wrote. How can I achieve this goal? Is there a way to load the web.config file in my application and read/change its data object orientated? Or do I need to parse it as if beeing a complete 'unknown' XML file? 回答1: If you're doing this from another application, you can use the VirtualDirectoryMapping class: VirtualDirectoryMapping vdm = new