IDevicePacketStream.IsConnected Method

Checks if the packet stream is connected.

Namespace:  Microsoft.SmartDevice.DeviceAgentTransport
Assembly:  Microsoft.SmartDevice.DeviceAgentTransport (in Microsoft.SmartDevice.DeviceAgentTransport.dll)

Syntax

'Declaration
Function IsConnected As Boolean

'Usage
Dim instance As IDevicePacketStream 
Dim returnValue As Boolean 

returnValue = instance.IsConnected()

bool IsConnected()

bool IsConnected()

function IsConnected() : boolean

Return Value

Type: System.Boolean
True if stream is connected; otherwise, false.

Exceptions

Examples

' Check for a packet while communication stream is connected. 
While packetStream.IsConnected()
    ' If a packet is found, display the string and integer data. 
    If packetStream.IsPacketAvailable() Then
        packetStream.Read(packet)
        Dim sb As New StringBuilder()
        While Not packet.IsEndOfPacket()
            Select Case packet.ReadDataType()
                Case DataType.BoolType
                    Dim boolValue As Boolean = packet.ReadBool()
                Case DataType.ByteArrayType
                    ' Read bytes and convert IntPtr to byte[] 
                    Dim ptr As IntPtr
                    Dim size As System.UInt32 = 0
                    packet.ReadBytes(ptr, size)
                    Dim buffer As Byte() = InteropUtils.ConvertIntPtrToByteArray(ptr, _
                        Convert.ToInt32(size))
                Case DataType.ByteType
                    Dim byteValue As Byte = packet.ReadByte()
                Case DataType.CharType
                    Dim charValue As Char = packet.ReadChar()
                Case DataType.Int32Type
                    sb.Append("Int32Type:  " + packet.ReadInt32().ToString() + _
                              vbCr + vbLf)
                Case DataType.StringType
                    sb.Append("String:  " + packet.ReadString() + vbCr + vbLf)
                Case Else 
            End Select 
        End While
        MessageBox.Show(sb.ToString())
        Exit While 
    End If
    System.Threading.Thread.Sleep(1000)
End While

// Check for a packet while communication stream is connected. 
while (packetStream.IsConnected())
{
    // If a packet is found, display the string and integer data. 
    if (packetStream.IsPacketAvailable())
    {
        packetStream.Read(out packet);
        StringBuilder sb = new StringBuilder();
        while (!packet.IsEndOfPacket())
        {
            switch (packet.ReadDataType())
            {
                case DataType.BoolType:
                    bool boolValue = packet.ReadBool();
                    break;
                case DataType.ByteArrayType:
                    // Read bytes and convert IntPtr to byte[]
                    IntPtr ptr;
                    uint size = 0;
                    packet.ReadBytes(out ptr, out size);
                    byte[] buffer = InteropUtils.ConvertIntPtrToByteArray(ptr, 
                        Convert.ToInt32(size));
                    break;
                case DataType.ByteType:
                    byte byteValue = packet.ReadByte();
                    break;
                case DataType.CharType:
                    char charValue = packet.ReadChar();
                    break;
                case DataType.Int32Type:
                    sb.Append("Int32Type:  " + packet.ReadInt32().ToString() + "\r\n");
                    break;
                case DataType.StringType:
                    sb.Append("String:  " + packet.ReadString() + "\r\n");
                    break;
                default:
                    break;
            }
        }
        MessageBox.Show(sb.ToString());
        break;
    }
    System.Threading.Thread.Sleep(1000);
}

.NET Framework Security

• Full trust for the immediate caller. This member cannot be used by partially trusted code. For more information, see Using Libraries from Partially Trusted Code.

See Also

Reference

IDevicePacketStream Interface

IDevicePacketStream Members

Microsoft.SmartDevice.DeviceAgentTransport Namespace