CStringArray Class

CStringArray : CObject

The CStringArray class supports arrays of CString objects.

The member functions of CStringArray are similar to the member functions of class
CObArray. Because of this similarity, you can use the
CObArray reference documentation for member function specifics. Wherever you see a
CObject pointer as a return value, substitute a CString (not a
CString pointer). Wherever you see a CObject pointer as a function parameter, substitute a
LPCTSTR.

CObject* CObArray::GetAt( int <nIndex> ) const;

for example, translates to

CString CStringArray::GetAt( int <nIndex> ) const;

and

void SetAt( int <nIndex>, CObject* <newElement> )

translates to

void SetAt( int <nIndex>, LPCTSTR <newElement> )

CStringArray incorporates the IMPLEMENT_SERIAL macro to support serialization and dumping of its elements. If an array of
CString objects is stored to an archive, either with an overloaded insertion operator or with the
Serialize member function, each element is serialized in turn.

Note   Before using an array, use SetSize to establish its size and allocate memory for it. If you do not use
SetSize, adding elements to your array causes it to be frequently reallocated and copied. Frequent reallocation and copying are inefficient and can fragment memory.
If you need a dump of individual string elements in the array, you must set the depth of the dump context to 1 or greater.

When a CString array is deleted, or when its elements are removed, string memory is freed as appropriate.

For more information on using CStringArray, see the articleCollections in
Visual C++ Programmer’s Guide.

#include <afxcoll.h>

CStringArray Class Members

Construction

CStringArray

Constructs an empty array for CString objects.

Bounds

GetSize	Gets number of elements in this array.
GetUpperBound	Returns the largest valid index.
SetSize	Sets the number of elements to be contained in this array.

Operations

FreeExtra	Frees all unused memory above the current upper bound.
RemoveAll	Removes all the elements from this array.

Element Access

GetAt	Returns the value at a given index.
SetAt	Sets the value for a given index; array not allowed to grow.
ElementAt	Returns a temporary reference to the element pointer within the array.
GetData	Allows access to elements in the array. Can be NULL.

Growing the Array
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Insertion/Removal

SetAtGrow	Sets the value for a given index; grows the array if necessary.
Add	Adds an element to the end of the array; grows the array if necessary.
Append	Appends another array to the array; grows the array if necessary.
Copy	Copies anolther array to the array; grows the array if necessary.

InsertAt	Inserts an element (or all the elements in another array) at a specified index.
RemoveAt	Removes an element at a specific index.

Operators

operator []

Sets or gets the element at the specified index.

例如查找并提取F:\VBA下文件名：

         CString strPath = "F:\\VBA\\*.*";
CString strFileName;
CStringArray strResult;
strResult.RemoveAll(); //文件列表清空

        CFileFind finder;

        BOOL bWorking = finder.FindFile(strPath);

        while (bWorking)
{

              bWorking = finder.FindNextFile();
      if(finder.IsDirectory()) //若确定找到的文件是否是一个目录,结束本次循环。

              continue;

              strFileName = finder.GetFileName();
      //cout << (LPCTSTR)strFileName << endl;
      strResult.Add(strFileName);
}
finder.Close();

int iCount = strResult.GetSize();
if(iCount > 0)
{
 int i;
 for(i = 0;i < iCount;i++)
{
 cout << (LPCTSTR)strResult.GetAt(i) << "\n";
}
cout << "最大索引是：" << strResult.GetUpperBound() << "\n";
    cout << "元素总数是：" << strResult.GetSize() << "\n";
    system("pause");

        }
else
{
 ;
}