int ProcessBackupData(const unsigned char *revBuf, int fileLen, char *outBuf, int outSize)
The files used for processing equipment backup files, for example, backup files in an SD card.
revBuf The uploaded files.
FileLen The file length.
outBuf To receive the returning data.
outsize The max length of the receiving data
[DllImport("plcommpro.dll", EntryPoint = "GetDeviceFileData")]
public static extern int GetDeviceFileData(IntPtr h, ref byte buffer, ref int buffersize, string filename, string options);
private void GetDeviceFileData()
{
Connect_Pull();
int ret = 0;
int buffersize = 4 * 1024 * 1024;
byte[] buffer = new byte[buffersize];
string filename = "Firmware"; //File name to save
string filepath = "";
if (IntPtr.Zero != h)
{
ret = GetDeviceFileData(h, ref buffer[0], ref buffersize, filename, "");
if (ret >= 0)
{
SaveFileDialog saveFileDialog1 = new SaveFileDialog();
saveFileDialog1.Filter = "txt files(*.txt)|*.txt|All files(*.*)|*.*";
saveFileDialog1.FilterIndex = 2;
saveFileDialog1.RestoreDirectory = true;
saveFileDialog1.FileName = System.IO.Path.GetFileName(filename);
if (saveFileDialog1.ShowDialog() == DialogResult.OK)
{
filepath = saveFileDialog1.FileName;
FileStream fsFile = new FileStream(filepath, FileMode.Create);
fsFile.Seek(0, SeekOrigin.Begin);
fsFile.Write(buffer, 0, buffersize);
fsFile.Close();
}
else
{
MessageBox.Show(filename + " is not exist!");
}
MessageBox.Show("succeed download file!");
}
}
else
{
MessageBox.Show("Handle has disconnect!");
return;
}
Disconnect_pull();
}
<DllImport("plcommpro.dll", EntryPoint:="GetDeviceFileData")>
Public Shared Function GetDeviceFileData(h As IntPtr, ByRef buffer As Byte, ByRef buffersize As Integer, filename As String, options As String) As Integer
End Function
Private Sub GetDeviceFileData()
Connect_Pull()
Dim ret As Integer = 0
Dim buffersize As Integer = 4 * 1024 * 1024
Dim buffer As Byte() = New Byte(buffersize - 1) {}
Dim filename As String = "Firmware"
'File name to save
Dim filepath As String = ""
If IntPtr.Zero <> h Then
ret = GetDeviceFileData(h, buffer(0), buffersize, filename, "")
If ret >= 0 Then
Dim saveFileDialog1 As New SaveFileDialog()
saveFileDialog1.Filter = "txt files(*.txt)|*.txt|All files(*.*)|*.*"
saveFileDialog1.FilterIndex = 2
saveFileDialog1.RestoreDirectory = True
saveFileDialog1.FileName = System.IO.Path.GetFileName(filename)
If saveFileDialog1.ShowDialog() = DialogResult.OK Then
filepath = saveFileDialog1.FileName
Dim fsFile As New FileStream(filepath, FileMode.Create)
fsFile.Seek(0, SeekOrigin.Begin)
fsFile.Write(buffer, 0, buffersize)
fsFile.Close()
Else
MessageBox.Show(filename & Convert.ToString(" is not exist!"))
End If
MessageBox.Show("succeed download file!")
End If
Else
MessageBox.Show("Handle has disconnect!")
Return
End If
Disconnect_pull()
End Sub