private void cbDataCheckType_SelectedIndexChanged(object sender, EventArgs e)
{
dataWidth = 8;
if (_DataBytes == null)
{
return;
}
gbCRCParam.Enabled = false;
int index = cbDataCheckType.SelectedIndex;
if (index == 0)
{
dataWidth = 16;
}
else if (index == 1)
{
dataWidth = 8;
}
else if (index == 2)
{
dataWidth = 8;
}
else
{
gbCRCParam.Enabled = true;
CRCType crcType = (CRCType)(index - 3);
CRCInfo crcInfo = DataCheck.GetCRCInfo(crcType);
chkRefIn.Checked = crcInfo.RefIn;
chkRefOut.Checked = crcInfo.RefOut;
chkXorOut.Checked = crcInfo.XorOut == 0 ? false : true;
if (crcType >= CRCType.CRC16_IBM && crcType <= CRCType.CRC16_DNP)
{
txtPoly.Text = string.Format("{0:X4}", crcInfo.Poly);
txtInit.Text = string.Format("{0:X4}", crcInfo.Init);
dataWidth = 16;
}
else if (crcType >= CRCType.CRC32 && crcType <= CRCType.CRC32_MPEG2)
{
txtPoly.Text = string.Format("{0:X8}", crcInfo.Poly);
txtInit.Text = string.Format("{0:X8}", crcInfo.Init);
dataWidth = 32;
}
}
CalCheckData();
}
private void CalCheckData()
{
try
{
UInt32 checkResult = 0;
if (_DataBytes == null)
{
return;
}
gbCRCParam.Enabled = false;
int index = cbDataCheckType.SelectedIndex;
if (index == -1)
{
return;
}
if (index == 0)
{
checkResult = Convert.ToUInt16(DataCheck.GetCheckSum(_DataBytes) & 0xFFFF);
dataWidth = 16;
}
else if (index == 1)
{
checkResult = Convert.ToByte(DataCheck.GetCheckSum(_DataBytes) & 0xFF);
dataWidth = 8;
}
else if (index == 2)
{
checkResult = DataCheck.GetXor(_DataBytes);
dataWidth = 8;
}
else
{
gbCRCParam.Enabled = true;
CRCType crcType = (CRCType)(index - 3);
CRCInfo crcInfo = DataCheck.GetCRCInfo(crcType);
crcInfo.Poly = Convert.ToUInt32(txtPoly.Text, 16);
crcInfo.Init = Convert.ToUInt32(txtInit.Text, 16);
crcInfo.RefIn = chkRefIn.Checked;
crcInfo.RefOut = chkRefOut.Checked;
crcInfo.XorOut = chkXorOut.Checked ? 0xFFFFFFFF : 0x00000000;
if (crcType >= CRCType.CRC16_IBM && crcType <= CRCType.CRC16_DNP)
{
checkResult = DataCheck.GetCRC16(crcInfo, _DataBytes);
dataWidth = 16;
}
else if (crcType >= CRCType.CRC32 && crcType <= CRCType.CRC32_MPEG2)
{
checkResult = DataCheck.GetCRC32(crcInfo, _DataBytes);
dataWidth = 32;
}
}
CheckResultValue = checkResult;
txtResult.Text = getStringByUint32(CheckResultValue, chkIsLittleEndian.Checked, dataWidth);
}
catch (System.Exception ex)
{
MessageBox.Show(ex.Message, Application.ProductName, MessageBoxButtons.OK, MessageBoxIcon.Error);
}
}