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Silverlight 4 응용 프로그램 관련 문제. 이 응용 프로그램에서 모든 클라이언트 세션은 DLL을 호출하는 별도의 프로세스를 만듭니다.Silverlight-DLL 통신 문제
DLL과의 통신은 다음과 같은 호출 스택에서 수행됩니다 (두 가지 기능 : 하나는 작동하고 다른 하나는 작동하지 않음).
이 함수는 DLL (모두 잘 작동)에 있습니다
private delegate void DocRunExternPageBreakRectsDelegate(string docId, int DocNum, int PageNum);
private delegate void DocRunExternPageDividionsDelegate(
string docId, int DocNum, int PageNum, out int Vcols, out IntPtr VoutArray, out int Hcols,
out IntPtr HoutArray);
...이 개 위임 인스턴스와 해당 기능 :
extern "C" BOOL __stdcall DocRunExternPageDividions(const char *docId, int num_form, int PageNum, int *Vcols, int **Vvalues, int *Hcols, int **Hvalues)
{
LOG_START_FUNCTION
BOOL res = 1;
__try {
res = DocRunExternPageDividions1(docId, num_form, PageNum, Vcols, Vvalues, Hcols, Hvalues);
}
__except(ExFilter(GetExceptionInformation()))
{
AfxThrowUserException();
}
LOG_STOP_FUNCTION
return res;
}
extern "C" BOOL __stdcall DocRunExternPageBreakRects(const char *docId, int num_form, int PageNum)
{
LOG_START_FUNCTION
BOOL res = 1;
__try {
res = DocRunExternPageBreakRects1(docId, num_form, PageNum);
}
__except(ExFilter(GetExceptionInformation()))
{
AfxThrowUserException();
}
LOG_STOP_FUNCTION
return res;
}
이 기능 서버를 호출하려면 두 대표가 있습니다 (서버 코드) :람다 표현식 내에서 -
public DocDividionsResult PageBreakRects(string docID, int DocNum, int pageNumber) {
var result = new DocDividionsResult();
int[] vert;
int[] horz;
result.Data = new List<object> { Program.DllWrapper.PageBreakRects(docID, DocNum, pageNumber, out vert, out horz) };
result.Vert = vert;
result.Horz = horz;
return result;
}
public DocDividionsResult GetPageDividions(string docID, int formId, int pageNumber) {
var result = new DocDividionsResult();
int[] vert;
int[] horz;
result.Data = new List<object>
{Program.DllWrapper.GetPageDividions(docID, formId, pageNumber, out vert, out horz)};
result.Vert = vert;
result.Horz = horz;
return result;
}
다음 :
public bool GetPageDividions(string docID, int formId, int pageNumber, out int[] vert, out int[] horz) {
bool result = false;
int []localVert = null;
int []localHorz = null;
if (_wp != null) {
if (Service<IWPCommunication>.Use(TestService =>
{
TestService.Test(UserId);
},
WPService =>
{
DocDividionsResult br = WPService.GetPageDividions(docID, formId, pageNumber);
if (br != null && br.Data != null && br.Data.Length == 1)
{
result = (bool)br.Data[0];
localVert = br.Vert;
localHorz = br.Horz;
}
}, Id, FS) == 0)
{
...
result = false;
}
}
vert = localVert;
horz = localHorz;
return result;
}
public bool PageBreakRects(string docId, int DocNum, int PageNum) {
bool result = false;
if (_wp != null)
{
if (Service<IWPCommunication>.Use(TestService =>
{
TestService.Test(UserId);
},
WPService =>
{
DocDividionsResult br = WPService.PageBreakRects(docId, DocNum, PageNum);
if (br != null && br.Data != null && br.Data.Length == 1) {
result = (bool)br.Data[0];
}
}, Id, FS) == 0)
{
...
result = false;
}
}
return result;
}
"사용"기능 (위에서 사용) :
public static int Use(UseServiceDelegate<T> codeTest, UseServiceDelegate<T> codeBlock, string SessionId, FileStream fs, bool throwException) {
IClientChannel texy = (IClientChannel)_testFactory.CreateChannel(new EndpointAddress("net.pipe://localhost/X2WPServiceUID" + SessionId));
IClientChannel proxy = (IClientChannel)_channelFactory.CreateChannel(new EndpointAddress("net.pipe://localhost/X2WPServiceUID" + SessionId));
int returnCode = 0;
try {
if (codeTest != null) {
codeTest((T)texy);
texy.Close();
}
returnCode = 1;
if (codeBlock != null) {
codeBlock((T)proxy);
proxy.Close();
}
returnCode = 2;
} catch(Exception e) {
if (returnCode == 1 && throwException)
throw e;
} finally {
if (returnCode == 0 && codeTest != null)
texy.Abort();
else if (returnCode == 1 && codeBlock != null)
proxy.Abort();
}
return returnCode;
}
public bool PageBreakRects(string docId, int DocNum, int PageNum, out int[] vert, out int[] horz) {
bool result;
vert = null;
horz = null;
Program.WriteUserMessage("Called PageBreakRects(" + docId + ", " + DocNum + ", " + PageNum + ")");
try {
DocRunExternPageBreakRects(docId, DocNum, PageNum);
DocRunExternPageDividions(docId, 0, PageNum, out vert, out horz);
result = true;
} catch (Exception ex) {}
return result;
}
public bool GetPageDividions(string docID, int Id, int pageNumber, out int[] vert, out int[] horz) {
bool result = false;
vert = null;
horz = null;
try {
DocRunExternPageDividions(docID, Id, pageNumber, out vert, out horz);
result = true;
} catch (Exception) {}
return result;
}
그들 각각을 여기라고
예외가 발생하면 클라이언트 통신이 생략됩니다. 전자 서버 쪽. GetPageDividions 함수가 정상적으로 작동합니다. PageBreakRects가 아니라 : DocDividionsResult br = WPService.PageBreakRects (docId, DocNum, PageNum); ; DocDividionsResult BR = WPService.PageBreakRects (DOCID, DocNum, PageNum)
"The message with Action 'http://tempuri.org/IWPCommunication/PageBreakRects'
cannot be processed at the receiver, due to a ContractFilter mismatch at the EndpointDispatcher.
This may be because of either a contract mismatch (mismatched Actions between sender and receiver)
or a binding/security mismatch between the sender and the receiver.
Check that sender and receiver have the same contract and the same binding
(including security requirements, e.g. Message, Transport, None)."
악화 대한 언급이 경우 함수 PageBreakRects 바꿀 것을이다 다음과 같은 예외가 발생 with DocDividionsResult br = WPService.GetPageDividions (docID, formId, pageNumber); 예외가 발생하지 않습니다.