DataBind Controls to Power BI XMLA Data in C++Builder



DataBind to Power BI XMLA data in C++Builder with standard components and controls.

The CData ODBC Driver for Power BI XMLA makes it easy to integrate connectivity to live Power BI XMLA data 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 Power BI XMLA data, executes queries, and displays the results in a grid. An additional section shows how to use FireDAC components to execute commands from code.

Create a Connection to Power BI XMLA Data

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.

By default, use Azure AD to connect to Microsoft Power BI XMLA. Azure AD is Microsoft’s multi-tenant, cloud-based directory and identity management service. It is user-based authentication that requires that you set AuthScheme to AzureAD.

For more information on other authentication schemes, refer to the Help documentation.

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

  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 Power BI XMLA.

Create VCL Applications with Connectivity to Power BI XMLA Data

Follow the procedure below to start querying Power BI XMLA data 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 Power BI XMLA.
    • 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 Country, Education FROM Customer WHERE Country = 'Australia'
    • 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.

Execute Commands to Power BI XMLA with FireDAC Components

You can use the TFDConnection and TFQuery components to execute queries to Power BI XMLA data. This section provides Power BI XMLA-specific examples of executing queries with the TFQuery component.

Connect to Power BI XMLA Data

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 Power BI XMLA ODBC Source"; FDConnection1->Connected = true;

To connect the TFDQuery component to Power BI XMLA data, 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.

Create Parameterized Queries

To create a parameterized query, use the following syntax below:

FDQuery1->SQL->Text = "select * from Customer where country = :Country"; FDQuery1->ParamByName("country")->AsString = "Australia"; FDQuery1->Open();

The example above binds a string-type input parameter by name and then opens the dataset that results.

Prepare the Statement

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.

Execute a Query

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 Customer where country = :Country"; FDQuery1->ParamByName("country")->AsString = "Australia"; FDQuery1->Open();

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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Power BI XMLA Icon Power BI XMLA ODBC Driver

The Power BI XMLA ODBC Driver is a powerful tool that allows you to connect with live data from Power BI XMLA, directly from any applications that support ODBC connectivity.

Access Power BI XMLA data like you would a database - read, write, and update Power BI XMLA FALSE, etc. through a standard ODBC Driver interface.