Build a Simple VCL Application for Excel Online データ

Embarcadero RAD Studio provides a development environment for Delphi and C++Builder applications. With the CData ODBC Driver for Excel Online, you gain access to live Excel Online データ within RAD Studio, abstracting the data into tables, views, and stored procedures that can be used to retrieve and update Excel Online データ. This article will walk through connecting to Excel Online and creating a simple VCL application with the Form Designer.

Create a Connection to Excel Online データ

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。

• UseSandbox: Sandbox アカウントのワークブックに接続している場合はtrue に設定。それ以外の場合は、これを空のままにしてプロダクションアカウントに接続します。

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 データ.

1. In a new VCL Forms application, expand the FireDAC node in the Data Explorer.
2. Right-click the ODBC Data Source node in the Data Explorer.
3. Click Add New Connection.
4. Enter a name for the connection.
5. In the FireDAC Connection Editor that appears, set the DataSource property to the name of the ODBC DSN for Excel Online.

Create VCL Applications with Connectivity to Excel Online データ

Follow the procedure below to start executing queries to Excel Online データ from a simple VCL application that displays the results of a query in a grid.

1. Drop a TFDConnection component onto the form and set the following properties:

   • ConnectionDefName: Select the FireDAC connection to Excel Online データ.
   • Connected: Select True from the menu and, in the dialog that appears, enter your credentials.

2. Drop a TFDQuery component onto the form and set the properties below:

   • Connection: Set this property to the TFDConnection component, if this component is not already specified.

   • SQL: Click the button in the SQL property and enter a query. For example:

     SELECT Id, Column1 FROM Test_xlsx_Sheet1
   • Active: Set this property to true.

3. Drop a TDataSource component onto the form and set the following property:

   • DataSet: In the menu for this property, select the name of the TFDQuery component.

4. Drop a TDBGrid control onto the form and set the following property:

   • DataSource: Select the name of the TDataSource.
5. Drop a TFDGUIxWaitCursor onto the form — this is required to avoid a run-time error.

You now have an executable application that displays the results of the SQL Query set in the TFDQuery object.

Related Articles

Below you can find other articles for using the CData ODBC Driver with RAD Studio, Delphi, and C++ Builder.

• DataBind Controls to Excel Online データ in C++Builder
• DataBind Controls to Excel Online データ in Delphi
• Viewing Excel Online データ in RAD Studio Data Explorer