Verificare se SqlServer è installato

Per determinare via codice se sul vostro computer sia installato SqlServer, basta controllare la seguente chiave di registro:

//C#
public static bool IsSqlServerInstalled()
{
    bool isInstalled = false;
    RegistryKey regSql = Registry.LocalMachine.OpenSubKey(@"SOFTWARE\Microsoft\MSSQLServer\MSSQLServer\CurrentVersion");
    if (regSql.GetValue("CurrentVersion") != null)
    {
        isInstalled = true;
    }
    return isInstalled;
}

'VB
Public Shared Function IsSqlServerInstalled() As Boolean
    Dim isInstalled As Boolean = False

    Dim regSql As RegistryKey = Registry.LocalMachine.OpenSubKey("SOFTWARE\Microsoft\MSSQLServer\MSSQLServer\CurrentVersion")

    If regSql.GetValue("CurrentVersion") IsNot Nothing Then
        isInstalled = True
    End If

    Return isInstalled
End Function