終于鼓搗好了……
void CtrynottoabortDlg::OnBnClickedstart()
{
// TODO: 在此添加控件通知處理程序代碼
//refreshtime部分-----------------------------------------------------------
UpdateData(TRUE);
struct tm t;
time_t now;
time(&now);
localtime_s(&t, &now);
m_Year = t.tm_year + 1900;
m_Month = t.tm_mon + 1;
m_Day = t.tm_mday;
m_Hour = t.tm_hour;
m_Minute = t.tm_min;
UpdateData(FALSE);
//connectCString部分-------------------------------------------------------
UpdateData(TRUE);
CString str1("Image");
CString str2, str3;
str2.Format(_T("%d"), m_Year);
str3.Format(_T("%d"), m_Minute);
//test_connect將作為表名,形如:Image201711
test_connect = str1 + str2 + str3;
UpdateData(FALSE);
//showTable部分--------------------------------------------------------------------------------------------------------
::CoInitialize(NULL);//初始化OLE/COM庫環境,為訪問ADO接口做準備
_RecordsetPtr m_pRecordset("ADODB.Recordset");
_ConnectionPtr m_pConnection("ADODB.Connection");
m_pConnection.CreateInstance("ADODB.Connection");
_bstr_t strConnect = "Provider=SQLOLEDB;Server=(local);Database=test;uid=sa;pwd=123654;";
m_pConnection->Open(strConnect, "", "", adModeUnknown);
_bstr_t bstrSql = "select name from sysobjects where xtype='U' ";
//創建記錄集
m_pRecordset->Open(bstrSql, m_pConnection.GetInterfacePtr(), adOpenDynamic, adLockOptimistic, adCmdText);
while (!m_pRecordset->EndOfFile)
{
// UpdateData(TRUE);
TableName = m_pRecordset->GetCollect("name"); // 此處獲得名稱
TableList.push_back(TableName);
m_pRecordset->MoveNext();
// UpdateData(FALSE);
}
m_pRecordset->Close();
m_pConnection->Close();
::CoUninitialize();
//查找第1張表,驗證vector容器正常
TableName = TableList[1];
UpdateData(FALSE);
//SearchTable部分---------------------------------------------------------------------------
auto index = find(TableList.begin(), TableList.end(), test_connect);
if (index != TableList.end())
{
// SearchTable = "找到了!";
// outputtest = "創建成功!";
outputtest = "表已經存在,不創建!";
}
else
{
// SearchTable = "沒找到。";
outputtest = "表不存在,即將創建!";
//CreateTable部分----------------------------------------------------------------------
//開始連接字符串
CString ss("select * into ");
CString connect1, createtable;
connect1 = ss + test_connect;
ss = " from Image where 1=2";
createtable = connect1 + ss;
//類型轉換
_bstr_t bstrSQL;
bstrSQL = (_bstr_t)createtable;
m_pConnection->Open(strConnect, "", "", adModeUnknown);
m_pConnection->Execute(bstrSQL, NULL, 1); //用Execute執行sql語句來新建
m_pConnection->Close();
::CoUninitialize();
}
UpdateData(FALSE);
vector<CString>().swap(TableList);
}
本來是分塊做的,最后集合在一起,調了一些地方,就可以了。
遇到了一些問題,也做一些備忘:
- 連接字符串 √
我把表的名字設成Image201706這種類型 年+月。
CString str1("Image");
CString str2,str3;
str2.Format(_T("%d"), m_Year);
str3.Format(_T("%d"), m_Month);
test_connect = str1 + str2 + str3;
2.嘗試create table
不能單純用create table吧,因為這張新表的結構是要和之前的結構完全一樣的。
SELECT * INTO 表2 FROM 表1
//上語句會同時實現全表備份,如果不需要數據,僅需要結構,就
SELECT * INTO 表2 FROM 表1 WHERE 1=2
//后面的where 1=2 只要不成立就行了,比如 where 1=0一樣OK
判斷表是否存在
IF EXISTS(Select * From sysobjects where xtype='U' AND Object_ID(N'YourTableName')=id)
Print 'Exists'
Else
Print 'Not Exists'
在CreateTable函數中其實我并沒有用到m_pRecordset,所以以下這一語句會報錯
// m_pRecordset->Close(); 只要有這個我就會中止!!!雖然表仍然可以生成
連接
void CTRYnDlg::OnBnClickedConnectcstring()
{
// TODO: 在此添加控件通知處理程序代碼
UpdateData(TRUE);
CString str1("Image");
CString str2,str3;
str2.Format(_T("%d"), m_Year);
str3.Format(_T("%d"), m_Minute);
test_connect = str1 + str2 + str3;
UpdateData(FALSE);
}
時間更新
void CTRYnDlg::OnBnClickedRefreshtime()
{
// TODO: 在此添加控件通知處理程序代碼
UpdateData(TRUE);
struct tm t;
time_t now;
time(&now);
localtime_s(&t, &now);
m_Year = t.tm_year + 1900;
m_Month = t.tm_mon + 1;
m_Day = t.tm_mday;
m_Hour = t.tm_hour;
m_Minute = t.tm_min;
// CString cyear;
UpdateData(FALSE);
}