Build a Simple VCL Application for Quickbase データ

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

Create a Connection to Quickbase 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.

ユーザー認証方法

ユーザー資格情報で認証するには、次の接続プロパティを設定してください。

1. User とPassword を設定します。
2. アプリケーションがApplicationToken を必要とする場合には、指定しない場合にはエラーが発生します。 ApplicationToken は、SpecificApp > Settings > App management > App properties > Advanced settings > Security options > Manage Application Token に移動して取得できます。

ユーザートークン認証

ユーザートークンで認証するには、次の接続プロパティを設定してください。

1. UserToken を設定すれば接続できます。UserToken は、Quick Base > My Preferences > My User Information > Manage User Tokens から確認できます。

You can then follow the steps below to use the Data Explorer to create a FireDAC connection to Quickbase 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 Quickbase.

Create VCL Applications with Connectivity to Quickbase データ

Follow the procedure below to start executing queries to Quickbase 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 Quickbase 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 SampleTable_1 WHERE Column2 = '100'
   • 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 Quickbase データ in C++Builder
• DataBind Controls to Quickbase データ in Delphi
• Viewing Quickbase データ in RAD Studio Data Explorer