private bool SetOneOPCTag(IOPCTag opcTag, VarEnum dataType)
{
var items = new OPCItemDef[1];
items[0] = new OPCItemDef(opcTag.FullName, true, 0, dataType);
OPCItemResult[] addRslt;
int rtc = OPCWriteGroup.AddItems(items, out addRslt);
if (HRESULTS.Failed(rtc))
{
return(false);// "Error at AddItem";
}
var iHnd = new Int32[addRslt.Length];
for (int i = 0; i < addRslt.Length; ++i)
{
iHnd[i] = addRslt[i].HandleServer;
}
int[] err;
var val = new object[addRslt.Length];
val[0] = opcTag.ObjectValue;
rtc = OPCWriteGroup.Write(iHnd, val, out err);
//string errTxt = "OK";
if (HRESULTS.Failed(rtc))
{
return(false);
//errTxt = srv.GetErrorString(rtc, 0);
}
// succeeded
// check item error codes
if (err.Any(HRESULTS.Failed))
{
return(false);
}
OPCWriteGroup.RemoveItems(iHnd, out err);
return(true);
// return errTxt;
}
public bool CreateReadOPCTag(IOPCTag opcTag)
{
if (opcTag.Type == typeof(int))
{
return(CreateReadOPCTag(opcTag.FullName, VarEnum.VT_I4));
}
if (opcTag.Type == typeof(bool))
{
return(CreateReadOPCTag(opcTag.FullName, VarEnum.VT_BOOL));
}
if (opcTag.Type == typeof(string))
{
return(CreateReadOPCTag(opcTag.FullName, VarEnum.VT_BSTR));
}
if (opcTag.Type == typeof(DateTime))
{
return(CreateReadOPCTag(opcTag.FullName, VarEnum.VT_DATE));
}
if (opcTag.Type == typeof(double))
{
return(CreateReadOPCTag(opcTag.FullName, VarEnum.VT_R8));
}
if (opcTag.Type == typeof(float))
{
return(CreateReadOPCTag(opcTag.FullName, VarEnum.VT_R4));
}
if (opcTag.Type == typeof(string[]))
{
return(CreateReadOPCTag(opcTag.FullName, VarEnum.VT_BSTR | VarEnum.VT_ARRAY));
}
if (opcTag.Type == typeof(int[]))
{
return(CreateReadOPCTag(opcTag.FullName, VarEnum.VT_I4 | VarEnum.VT_ARRAY));
}
return(false);
}
public bool SetOneOPCTag(IOPCTag opcTag)
{
return(SetOneOPCTag(opcTag, VarEnum.VT_I4));
}
