各製品の資料を入手。
詳細はこちら →Excel Online ODBC Driver の30日間無償トライアルをダウンロード
30日間の無償トライアルへ製品の詳細
Excel Online ODBC Driver
相談したい
Excel Online ODBC Driver は、ODBC 接続をサポートするさまざまなアプリケーションからExcel Online データへの接続を実現するパワフルなツールです。
標準のODBC ドライバーインターフェースを使用して、データベースのようにExcel Online スプレッドシートデータにアクセスし、データの読み、書き、更新を実行できます。
The CData ODBC Driver for Excel Online makes it easy to integrate connectivity to live Excel Online のデータ with standard data access components in C++Builder. This article shows how to create a simple visual component library (VCL) application in C++Builder that connects to Excel Online のデータ, executes queries, and displays the results in a grid. An additional section shows how to use FireDAC components to execute commands from code.
If you have not already, first specify connection properties in an ODBC DSN (data source name). This is the last step of the driver installation. You can use the Microsoft ODBC Data Source Administrator to create and configure ODBC DSNs.
ワークブックに接続するには、Excel Online への認証を提供し、 次のプロパティを設定します。
Workbook: ワークブックの名前かId に設定。利用可能なワークブックに関する情報のリストを表示する場合は、認証後にWorkbooks ビューに対してクエリを実行します。
OAuth 認証を使うこともできます。ユーザー資格情報の接続プロパティを設定せずに接続できます。接続すると、CData 製品はデフォルトブラウザでOAuth エンドポイントを開きます。ログインして、CData 製品にアクセス許可を与えます。CData 製品がOAuth プロセスを完了します。 他のOAuth 認証フローについては、ヘルプドキュメントの「OAuth 認証の使用」を参照してください。
You can then follow the steps below to use the Data Explorer to create a FireDAC connection to Excel Online.
Follow the procedure below to start querying Excel Online のデータ from a simple VCL application that displays the results of a query in a grid.
Drop a TFDConnection component onto the form and set the following properties:
Drop a TFDQuery component onto the form and set the properties below:
SQL: Click the button in the SQL property and enter a query. For example:
SELECT Id, Column1 FROM Test_xlsx_Sheet1
Drop a TDataSource component onto the form and set the following property:
Drop a TDBGrid control onto the form and set the following property:
You can use the TFDConnection and TFQuery components to execute queries to Excel Online のデータ. This section provides Excel Online-specific examples of executing queries with the TFQuery component.
To connect to the data source, set the Connected property of the TFDConnection component to true. You can set the same properties from code:
FDConnection1->ConnectionDefName = "CData Excel Online ODBC Source";
FDConnection1->Connected = true;
To connect the TFDQuery component to Excel Online のデータ, set the Connection property of the component. When a TFDQuery component is added at design time, its Connection property is automatically set to point to a TFDConnection on the form, as in the application above.
To create a parameterized query, use the following syntax below:
FDQuery1->SQL->Text = "select * from Test_xlsx_Sheet1 where column2 = :Column2";
FDQuery1->ParamByName("column2")->AsString = "Bob";
query->Open();
The example above binds a string-type input parameter by name and then opens the dataset that results.
Preparing statements is costly in system resources and time. The connection must be active and open while a statement is prepared. By default, FireDAC prepares the query to avoid recompiling the same query over and over. To disable statement preparation, set ResourceOptions.DirectExecute to True; for example, when you need to execute a query only once.
To execute a query that returns a result set, such as a select query, use the Open method. The Open method executes the query, returns the result set, and opens it. The Open method will return an error if the query does not produce a result set.
FDQuery1->SQL->Text := "select * from Test_xlsx_Sheet1 where column2 = :Column2";
FDQuery1.ParamByName("column2")->AsString = "Bob";
FDQuery1->Open();
To execute a query that does not return a result set, use the ExecSQL method. The ExecSQL method will return an error if the query returns a result set. To retrieve the count of affected rows use the TFD.RowsAffected property.
FDQ.SQL.Text := "delete from Test_xlsx_Sheet1 where Id = :Id";
FDQuery1->Params->Items[0]->AsString = "x12345";
FDQuery1->ExecSQL();
AnsiString i = FDQuery1->RowsAffected;
Below you can find other articles for using the CData ODBC Driver with RAD Studio, Delphi, and C++ Builder.
