[英]Passing array of strings from C# to C++ Com
我需要将字符串数组从C#模块传递到C ++ COM组件。 以下是idl声明;
[id(11), helpstring("method deleteObjectsEx")] HRESULT deleteObjectsEx(
[in] BSTR userName,
[in] BSTR userPasswd,
[in] SAFEARRAY(VARIANT) varValues,
[in] BSTR deleteMode
);
在C#中,我们使用以下代码来调用API
List<string> ObjectIDS = new List<string>();
ObjectIDS.Add(obj._ObjectId[0]);
ObjectIDS.Add(obj._ObjectId[1]);
/*Array ar = Array.CreateInstance(typeof(string), size);
ar.SetValue(obj._ObjectId[0], 0);
ar.SetValue(obj._ObjectId[1], 1);*/
mhubBridge.deleteObjectsEx(Encrypt(auth.UserName),
Encrypt(auth.UserPassword),
ObjectIDS.ToArray(),
obj._delMEthod);
在调用deleteObjectsEx API时,我得到“类型为System.Runtime.InteropServices.SafeArrayTypeMismatchException occurred in IPDWebService.DLL IPDWS::trace::(Tuesday, 06 August 2013 13:27): Exception in deleteObjectsEx:: message - Specified array was not of the expected type.
第一次机会异常System.Runtime.InteropServices.SafeArrayTypeMismatchException occurred in IPDWebService.DLL IPDWS::trace::(Tuesday, 06 August 2013 13:27): Exception in deleteObjectsEx:: message - Specified array was not of the expected type.
( 不起作用 )
尝试使用ar
数组。
mhubBridge.deleteObjectsEx(Encrypt(auth.UserName),
Encrypt(auth.UserPassword),
ar,
obj._delMEthod);
如果ObjectIDS
,请删除所有ObjectIDS
“物件”。
或尝试:
( 工作中 )
object[] ar = new object[] { obj._ObjectId[0], obj._ObjectId[1] };
并将其传递给deleteObjectsEx(...)
因为从技术上讲, VARIANT
是object
,所以SAFEARRAY(VARIANT)
是object[]
。
尝试这个:
object[] ar = new object[2];
ar [0] = obj._ObjectId[0];
ar [1] = obj._ObjectId[1];
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