var config = ConfigurationManager.OpenExeConfiguration(ConfigurationUserLevel.None); int initialCount = ConfigurationManager.ConnectionStrings.Count; //string connStringName = txtConnName.Text; string serverName = txtserver.Text; string databaseName = txtdatabase.Text; string userId = txtUsername.Text; string password = txtPassword.Text; var connectionStringBuilder = new SqlConnectionStringBuilder { DataSource = serverName, InitialCatalog = databaseName, UserID = userId, Password = password }; var csSetting = new ConnectionStringSettings(connectionStringBuilder.ConnectionString, "System.Data.SqlClient"); //var csSetting = new ConnectionStringSettings(connStringName, connectionStringBuilder.ConnectionString, "System.Data.SqlClient"); var csSection = config.ConnectionStrings; csSection.ConnectionStrings.Add(csSetting); config.Save(ConfigurationSaveMode.Modified, true); ConfigurationManager.RefreshSection("connectionString"); int finalCount = ConfigurationManager.ConnectionStrings.Count;
var
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