Click here to Skip to main content
Click here to Skip to main content

SQL Server Connection Dialog

, 29 Oct 2012 CPOL
Rate this:
Please Sign up or sign in to vote.
Show you how to make a connection dialog developed completely from scratch.

Introduction

Solve the ability to configure connection to SQL Server by using app.config or any other means.

Using the code

For use only need to import System.Configuration

This example gets the connectionstring of app.config for viewing and editing, creating a method in the client form.

Add section connectionStrings in app.config  

<connectionStrings>    
    <add name="conn" 
       connectionString="Data Source=127.0.0.1;Initial Catalog=master; User Id=sa; Password=123456;Integrated Security=false" 
       providerName="System.Data.sqlclient" />
</connectionStrings> 

Opens the specified client configuration file as a Configuration object. 

Dim config As Configuration = ConfigurationManager.OpenExeConfiguration(ConfigurationUserLevel.None)

Gets the ConnectionStringsSection data for the current application's default configuration.  

Dim connectionString as String = config.ConnectionStrings.ConnectionStrings("conn").Connection 

Save and refresh ConnectionString in current application's default configuration (app.config). 

config.ConnectionStrings.ConnectionStrings("conn").ConnectionString = CS
config.Save(ConfigurationSaveMode.Modified)
ConfigurationManager.RefreshSection("connectionStrings") 

Complete code form method client. 

Public Function ConnectionDialog() As Boolean
 
    Dim config As Configuration = ConfigurationManager.OpenExeConfiguration(ConfigurationUserLevel.None)

    Dim dialog As New SQLServerConnectionDialog()
    dialog.ConnectionString = config.ConnectionStrings.ConnectionStrings("conn").ConnectionString

    If dialog.ShowDialog = Windows.Forms.DialogResult.Cancel Then Return False

    Dim CS As String = dialog.ConnectionString

    config.ConnectionStrings.ConnectionStrings("conn").ConnectionString = CS
    config.Save(ConfigurationSaveMode.Modified)

    ConfigurationManager.RefreshSection("connectionStrings")

    Return True
End Function

To get the list of SQL Server instances registered on the network: 

Dim sqlSources As DataTable = SqlDataSourceEnumerator.Instance.GetDataSources
For Each datarow As DataRow In sqlSources.Rows
    Dim datasource As String = datarow("ServerName").ToString
    If Not datarow("InstanceName") Is DBNull.Value Then
        datasource &= String.Format("\{0}", datarow("InstanceName"))
    End If
    cbServer.Items.Add(datasource)
Next

To get the list of databases on SQL Server:

Using cn As SqlConnection = New SqlConnection(connString)
    cn.Open()
    Using cmd As SqlCommand = New SqlCommand()
        cmd.Connection = cn
        cmd.CommandType = CommandType.StoredProcedure
        cmd.CommandText = "sp_databases"

        Using myReader As SqlDataReader = cmd.ExecuteReader()
            While (myReader.Read())
                cbDataBase.Items.Add(myReader.GetString(0))
            End While
        End Using
    End Using
End Using

We build a connectionstring via object SqlConnectionStringBuilder.

Dim conn As New SqlConnectionStringBuilder()
conn.DataSource = "ServerName"
conn.IntegratedSecurity = False
conn.UserID = "sa"
conn.Password = "123456"
conn.InitialCatalog = "DBName"

License

This article, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

Share

About the Author

Hernán Hegykozi
Program Manager
Argentina Argentina
No Biography provided
Follow on   Twitter   Google+

Comments and Discussions

 
QuestionNice article, the MS published SQL Connection Dialog is just to much. Pinmemberwknopf14-Aug-13 10:52 
AnswerRe: Nice article, the MS published SQL Connection Dialog is just to much. PinmemberHernán Hegykozi27-Aug-13 18:16 
GeneralMy vote of 5 Pinmemberevoisard9-Nov-12 6:13 
GeneralRe: My vote of 5 PinmemberHernán Hegykozi14-Nov-12 6:20 
GeneralEste muchacho es comañero mio!!! / This guy is my fellow!!! (orgullo / pride) PinmemberMember 91909962-Nov-12 7:02 
GeneralRe: Este muchacho es comañero mio!!! / This guy is my fellow!!! (orgullo / pride) PinmemberHernán Hegykozi2-Nov-12 7:45 
GeneralMy vote of 5 PinmemberNicolas Trillo29-Oct-12 5:53 
GeneralRe: My vote of 5 PinmemberHernán Hegykozi29-Oct-12 5:55 
QuestionNice!! PinmemberMember 955484229-Oct-12 4:24 

General General    News News    Suggestion Suggestion    Question Question    Bug Bug    Answer Answer    Joke Joke    Rant Rant    Admin Admin   

Use Ctrl+Left/Right to switch messages, Ctrl+Up/Down to switch threads, Ctrl+Shift+Left/Right to switch pages.

| Advertise | Privacy | Mobile
Web02 | 2.8.141022.2 | Last Updated 29 Oct 2012
Article Copyright 2012 by Hernán Hegykozi
Everything else Copyright © CodeProject, 1999-2014
Terms of Service
Layout: fixed | fluid