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DataBind Charts to Power BI XMLA Data
Use the standard ADO.NET procedures for databinding to provide bidirectional access to Power BI XMLA data from controls in the Visual Studio toolbox. This article demonstrates a graphical approach using wizards in Visual Studio, as well as how to databind with only a few lines of code.
DataBinding facilitates two-way interaction with data through UI controls. Using the CData ADO.NET Provider for Power BI XMLA streamlines the process of binding Power BI XMLA data to Windows Forms and Web controls within Visual Studio. In this article, we will demonstrate using wizards to establish a binding between Power BI XMLA data and a chart that dynamically updates. Additionally, the code walk-through section will guide you through the creation of a chart using just 10 lines of code.
Binding Data to a Chart
DataBinding to a Chart consists of three steps: Instantiate the control, configure the data source, and databind.
Configure the Connection and Select Database Objects
To create a chart control and establish a connection to Power BI XMLA, follow the steps outlined below using the Data Source Configuration Wizard. Within the wizard, you'll have the option to choose the specific Power BI XMLA entities you wish to bind to.
- In a Windows Forms project, drag and drop a Chart control from the toolbox to the form. In the Data section of the Chart properties, select DataSource and then select Add Project Data Source from the menu.
- In the Data Source Configuration Wizard that appears, select Database -> Dataset.
- In the Choose Your Data Connection step, click New Connection.
In the Add Connection dialog, click Change to select the CData Power BI XMLA Data Source.
Below is a typical connection string:
AuthScheme=AzureADInitiateOAuth=GETANDREFRESHBy 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.
When you configure the connection, you may also want to set the Max Rows connection property. This will limit the number of rows returned, which is especially helpful for improving performance when designing reports and visualizations.
- Choose the database objects you want to work with. This example uses the Customer table.
DataBind
After adding the data source and selecting database objects, you can bind the objects to the chart. This example assigns the x-axis to Country and the y-axis to Education.
- In the Chart properties, click the button in the Series property to open the Series Collection Editor.
- In the Series properties, select the columns you want for the x- and y-axes: Select columns from the menu in the XValueMember and YValueMember properties.
The chart is now databound to the Power BI XMLA data. Run the chart to display the current data.
Code Walk-through
DataBinding to Power BI XMLA data requires only a few lines of code and can be completed in three easy steps.
- Connect to Power BI XMLA.
- Create the PowerBIXMLADataAdapter to execute the query and create a DataSet to be filled with its results.
- DataBind the result set to the chart.
Below is the complete code:
PowerBIXMLAConnection conn = new PowerBIXMLAConnection("AuthScheme=AzureADInitiateOAuth=GETANDREFRESH");
PowerBIXMLACommand comm = new PowerBIXMLACommand("SELECT Country, Education FROM Customer WHERE Country = 'Australia'", conn);
PowerBIXMLADataAdapter da = new PowerBIXMLADataAdapter(comm);
DataSet dataset = new DataSet();
da.Fill(dataset);
chart1.DataSource = dataset;
chart1.Series[0].XValueMember = "Country";
chart1.Series[0].YValueMembers = "Education";
// Insert code for additional chart formatting here.
chart1.DataBind();
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Power BI XMLA ADO.NET Provider
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