IOPCBrowse interface|Classic OPC: DA, A&E, HDA, XML-DA, etc.|Forum|OPC Foundation

Hi,

I’m using the Browse method (IOPCBrowse interface) to browse the address space (DA 3.0).

void Browse(
[MarshalAs(UnmanagedType.LPWStr)]
string szItemID,
ref IntPtr pszContinuationPoint,
[MarshalAs(UnmanagedType.I4)]
int dwMaxElementsReturned,
OPCBROWSEFILTER dwBrowseFilter,
[MarshalAs(UnmanagedType.LPWStr)]
string szElementNameFilter,
[MarshalAs(UnmanagedType.LPWStr)]
string szVendorFilter,
[MarshalAs(UnmanagedType.I4)]
int bReturnAllProperties,
[MarshalAs(UnmanagedType.I4)]
int bReturnPropertyValues,
[MarshalAs(UnmanagedType.I4)]
int dwPropertyCount,
[MarshalAs(UnmanagedType.LPArray, ArraySubType=UnmanagedType.I4, SizeParamIndex=8)]
int[] pdwPropertyIDs,
[Out][MarshalAs(UnmanagedType.I4)]
out int pbMoreElements,
[Out][MarshalAs(UnmanagedType.I4)]
out int pdwCount,
[Out]
out IntPtr ppBrowseElements);

Using the method GetBrowseElements, I can read only the first letter for the Item ID. 

I appreciate any thoughts or advice.