Build a Simple VCL Application for SAP データ

How to build a simple VCL Application to view SAP データ in RAD Studio using the CData ODBC Driver for SAP.

最終更新日:2023-06-12

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

Create a Connection to SAP 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.

SAP への接続はlibrfc32.dll、librfc32u.dll、NetWeaver、Web Services (SOAP) のどれかで行います。 ConnectionType 接続プロパティをCLASSIC (librfc32.dll)、CLASSIC_UNICODE (librfc32u.dll)、NETWEAVER、SOAP に設定します。

SOAP を使う場合、Client、RFCUrl、SystemNumber、User、Password のプロパティを設定します。

それ以外の方法の場合、Host、User、Password、Client、SystemNumber を指定します。

Note: librfc32.dll やその他のSAP 接続には対応しておりません。SAP インストールから対応する接続モジュールをマシンにインストールしておいてください。

詳細情報はobtaining the connection properties 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 SAP 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 SAP.

Create VCL Applications with Connectivity to SAP データ

Follow the procedure below to start executing queries to SAP 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 SAP 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 MANDT, MBRSH FROM MARA
    • 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.

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