原理就是通过枚举数据库中的表的类型，用户建立的表的类型一般是TBALE。所以通过判断当前数据库中表的类型，就可以获取表的名称了。
初始化部分
在stdafx.h中添加：
#include <icrsint.h>
#include <basetsd.h>
#include <ole2.h>
#import "c:\Program Files\Common Files\System\ADO\msado15.dll" \
no_namespace rename("EOF", "EndOfFile")
在主对话框的头文件中，映射一个：
CListBox m_strList;
实现部分说明：
在构造函数中添加：
::CoInitialize(NULL); //初始化Com库
实现代码：
//枚举数据表的名称处理
void OpenSchemaX(TCHAR *TableName)
{
HRESULT hr = S_OK;
::CoInitialize(NULL); //初始化Com
IADORecordBinding *picRs = NULL;
_RecordsetPtr pRstSchema("ADODB.Recordset");
_ConnectionPtr pConnection("ADODB.Connection" );
pConnection->ConnectionString = TableName;
pConnection->Provider = "Microsoft.Jet.OLEDB.4.0";
try
{
pConnection->Open(pConnection->ConnectionString, "", "", adModeUnknown);
pRstSchema->QueryInterface(
__uuidof(IADORecordBinding), (LPVOID*)&picRs);
pRstSchema = pConnection->OpenSchema(adSchemaTables);//枚举表的名称处理
while(!(pRstSchema->EndOfFile))
{
CString strTableType;
_bstr_t table_name = pRstSchema->Fields->
GetItem("TABLE_NAME")->Value;//获取表的名称
_bstr_t table_type = pRstSchema->Fields->
GetItem("TABLE_TYPE")->Value;//获取表的类型
strTableType.Format("%s",(LPCSTR) table_type);
if(!lstrcmp(strTableType,_T("TABLE")))
{
m_strList.AddString((LPCSTR) table_name);//添加表的名称
}
pRstSchema->MoveNext();
}
// Clean up objects before exit.
pRstSchema->Close();
pConnection->Close();
}
catch (_com_error &e)
{
// Notify the user of errors if any.
// Pass a connection pointer accessed from the Connection.
PrintProviderError(pConnection);
PrintComError(e);
}
CoUninitialize();
}
//打印错误代码及描述
void PrintProviderError(_ConnectionPtr pConnection)
{
ErrorPtr pErr = NULL;
if( (pConnection->Errors->Count) > 0)
{
long nCount = pConnection->Errors->Count;
// Collection ranges from 0 to nCount -1.
for(long i = 0;i < nCount;i++)
{
pErr = pConnection->Errors->GetItem(i);
CString strError;
strError.Format("Error number: %x\t%s", pErr->Number, pErr->Description);
AfxMessageBox(strError);
}
}
}
//打印COM的错误信息
void PrintComError(_com_error &e)
{
_bstr_t bstrSource(e.Source());
_bstr_t bstrDescription(e.Description());
// Print COM errors.
CString strError;
strError.Format("Error number: Description = %s\tCode meaning = %s",(LPCSTR) bstrDescription, e.ErrorMessage());
AfxMessageBox(strError);
}
调用方法：
CString strFileName;
TCHAR FileName[MAX_PATH];
TCHAR bigBuff[2048] = _T(""); // maximum common dialog buffer size
TCHAR szFilter[] = _T("Text Files (*.mdb)|*.mdb|All Files (*.*)|*.*||");
CFileDialog dlg(TRUE, NULL, NULL,
OFN_HIDEREADONLY | OFN_ALLOWMULTISELECT, szFilter);
// Modify OPENFILENAME members directly to point to bigBuff
dlg.m_ofn.lpstrFile = bigBuff;
dlg.m_ofn.nMaxFile = sizeof(bigBuff);
if(IDOK == dlg.DoModal() )
{
m_strList.ResetContent();
strFileName = dlg.GetPathName();
lstrcpy(FileName,strFileName);
OpenSchemaX(FileName);
}
释放部分：
LRESULT WindowProc(UINT message, WPARAM wParam, LPARAM lParam)
{
// TODO: Add your specialized code here and/or call the base class
switch(message) {
case WM_CLOSE:
CoUninitialize();
break;
default:
break;
}
return CDialog::WindowProc(message, wParam, lParam);
}
调试环境：
WIN2000 + ADO + ACCESS2000 + VSP5
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