internal unsafe DirectoryVirtualListView RetrieveVLVResponse()
{
if (_disposed)
{
throw new ObjectDisposedException(GetType().Name);
}
// get the vlv response back
AdsSearchColumn column = new AdsSearchColumn();
AdsSearchColumn *pColumn = &column;
SearchObject.GetColumn(Handle, _adsVLVResponseName, (INTPTR_INTPTRCAST)pColumn);
try
{
AdsValue *pValue = column.pADsValues;
DirectoryVirtualListView value = (DirectoryVirtualListView) new AdsValueHelper(*pValue).GetVlvValue();
return(value);
}
finally
{
try
{
SearchObject.FreeColumn((INTPTR_INTPTRCAST)pColumn);
}
catch (COMException)
{
}
}
}
public SearchResult FindOne()
{
SearchResult result = null;
SearchResultCollection results = this.FindAll(false);
try
{
foreach (SearchResult result2 in results)
{
if (this.directorySynchronizationSpecified)
{
System.DirectoryServices.DirectorySynchronization directorySynchronization = this.DirectorySynchronization;
}
if (this.directoryVirtualListViewSpecified)
{
DirectoryVirtualListView virtualListView = this.VirtualListView;
}
return(result2);
}
return(result);
}
finally
{
this.searchResult = null;
results.Dispose();
}
return(result);
}
/// <include file='doc\SearchResultCollection.uex' path='docs/doc[@for="SearchResultCollection.ResultsEnumerator.MoveNext"]/*' />
/// <devdoc>
/// <para>Advances
/// the enumerator to the next element of the collection
/// and returns a Boolean value indicating whether a valid element is available.</para>
/// </devdoc>
public bool MoveNext()
{
DirectorySynchronization tempsync = null;
DirectoryVirtualListView tempvlv = null;
int errorCode = 0;
if (_eof)
{
return(false);
}
_currentResult = null;
if (!_initialized)
{
int hr = _results.SearchObject.GetFirstRow(_results.Handle);
if (hr != UnsafeNativeMethods.S_ADS_NOMORE_ROWS)
{
//throw a clearer exception if the filter was invalid
if (hr == UnsafeNativeMethods.INVALID_FILTER)
{
throw new ArgumentException(Res.GetString(Res.DSInvalidSearchFilter, _results.Filter));
}
if (hr != 0)
{
throw COMExceptionHelper.CreateFormattedComException(hr);
}
_eof = false;
_initialized = true;
return(true);
}
_initialized = true;
}
while (true)
{
// clear the last error first
CleanLastError();
errorCode = 0;
int hr = _results.SearchObject.GetNextRow(_results.Handle);
// SIZE_LIMIT_EXCEEDED occurs when we supply too generic filter or small SizeLimit value.
if (hr == UnsafeNativeMethods.S_ADS_NOMORE_ROWS || hr == UnsafeNativeMethods.SIZE_LIMIT_EXCEEDED)
{
// need to make sure this is not the case that server actually still has record not returned yet
if (hr == UnsafeNativeMethods.S_ADS_NOMORE_ROWS)
{
hr = GetLastError(ref errorCode);
// get last error call failed, we need to bail out
if (hr != 0)
{
throw COMExceptionHelper.CreateFormattedComException(hr);
}
}
// not the case that server still has result, we are done here
if (errorCode != SafeNativeMethods.ERROR_MORE_DATA)
{
// get the dirsync cookie as we finished all the rows
if (_results.srch.directorySynchronizationSpecified)
{
tempsync = _results.srch.DirectorySynchronization;
}
// get the vlv response as we finished all the rows
if (_results.srch.directoryVirtualListViewSpecified)
{
tempvlv = _results.srch.VirtualListView;
}
_results.srch.searchResult = null;
_eof = true;
_initialized = false;
return(false);
}
else
{
// if user chooses to wait to continue the search
if (_waitForResult)
{
continue;
}
else
{
uint temp = (uint)errorCode;
temp = ((((temp) & 0x0000FFFF) | (7 << 16) | 0x80000000));
throw COMExceptionHelper.CreateFormattedComException((int)temp);
}
}
}
//throw a clearer exception if the filter was invalid
if (hr == UnsafeNativeMethods.INVALID_FILTER)
{
throw new ArgumentException(Res.GetString(Res.DSInvalidSearchFilter, _results.Filter));
}
if (hr != 0)
{
throw COMExceptionHelper.CreateFormattedComException(hr);
}
_eof = false;
return(true);
}
}
public object GetVlvValue()
{
AdsVLV structure = new AdsVLV();
Marshal.PtrToStructure(this.adsvalue.octetString.value, structure);
byte[] destination = null;
if ((structure.contextID != IntPtr.Zero) && (structure.contextIDlength != 0))
{
destination = new byte[structure.contextIDlength];
Marshal.Copy(structure.contextID, destination, 0, structure.contextIDlength);
}
DirectoryVirtualListView view = new DirectoryVirtualListView {
Offset = structure.offset,
ApproximateTotal = structure.contentCount
};
DirectoryVirtualListViewContext context = new DirectoryVirtualListViewContext(destination);
view.DirectoryVirtualListViewContext = context;
return view;
}
public bool MoveNext()
{
int errorCode = 0;
if (this.eof)
{
return(false);
}
this.currentResult = null;
if (!this.initialized)
{
int firstRow = this.results.SearchObject.GetFirstRow(this.results.Handle);
switch (firstRow)
{
case 0x5012:
this.initialized = true;
break;
case -2147016642:
throw new ArgumentException(Res.GetString("DSInvalidSearchFilter", new object[] { this.results.Filter }));
default:
if (firstRow != 0)
{
throw COMExceptionHelper.CreateFormattedComException(firstRow);
}
this.eof = false;
this.initialized = true;
return(true);
}
}
Label_0091:
this.CleanLastError();
errorCode = 0;
int nextRow = this.results.SearchObject.GetNextRow(this.results.Handle);
switch (nextRow)
{
case 0x5012:
case -2147016669:
if (nextRow == 0x5012)
{
nextRow = this.GetLastError(ref errorCode);
if (nextRow != 0)
{
throw COMExceptionHelper.CreateFormattedComException(nextRow);
}
}
if (errorCode != 0xea)
{
if (this.results.srch.directorySynchronizationSpecified)
{
DirectorySynchronization directorySynchronization = this.results.srch.DirectorySynchronization;
}
if (this.results.srch.directoryVirtualListViewSpecified)
{
DirectoryVirtualListView virtualListView = this.results.srch.VirtualListView;
}
this.results.srch.searchResult = null;
this.eof = true;
this.initialized = false;
return(false);
}
if (!this.waitForResult)
{
uint num4 = (uint)errorCode;
num4 = ((num4 & 0xffff) | 0x70000) | 0x80000000;
throw COMExceptionHelper.CreateFormattedComException((int)num4);
}
goto Label_0091;
case -2147016642:
throw new ArgumentException(Res.GetString("DSInvalidSearchFilter", new object[] { this.results.Filter }));
}
if (nextRow != 0)
{
throw COMExceptionHelper.CreateFormattedComException(nextRow);
}
this.eof = false;
return(true);
}
