DataBind Charts to Pushover Data

DataBinding facilitates two-way interaction with data through UI controls. Using the CData ADO.NET Provider for Pushover streamlines the process of binding Pushover data to Windows Forms and Web controls within Visual Studio. In this article, we will demonstrate using wizards to establish a binding between Pushover 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 Pushover, follow the steps outlined below using the Data Source Configuration Wizard. Within the wizard, you'll have the option to choose the specific Pushover entities you wish to bind to.

1. 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.
2. In the Data Source Configuration Wizard that appears, select Database -> Dataset.
3. In the Choose Your Data Connection step, click New Connection.

4. In the Add Connection dialog, click Change to select the CData Pushover Data Source.

   Below is a typical connection string:

   Profile=C:\profiles\Pushover.apip;AuthScheme=APIKey;ProfileSettings='APIKey=your_application_token';

   Start by setting the Profile connection property to the location of the Pushover Profile on disk (e.g. C:\profiles\Pushover.apip). Next, set the ProfileSettings connection property to the connection string for Pushover (see below).

   Pushover API Profile Settings

   Pushover uses API Key authentication. Your Pushover Application API Token is used to authenticate all requests. You can create and manage API tokens in the Pushover dashboard at pushover.net by registering an application under Settings > Your Applications.

   After setting the following connection properties, you are ready to connect:

   • AuthScheme: Set this to APIKey.
   • APIKey: Set this to your 30-character Pushover Application API Token.

   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.

   
5. Choose the database objects you want to work with. This example uses the GroupMembers 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 User and the y-axis to Memo.

1. In the Chart properties, click the button in the Series property to open the Series Collection Editor.
2. 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 Pushover data. Run the chart to display the current data.

Code Walk-through

DataBinding to Pushover data requires only a few lines of code and can be completed in three easy steps.

1. Connect to Pushover.
2. Create the APIDataAdapter to execute the query and create a DataSet to be filled with its results.
3. DataBind the result set to the chart.

Below is the complete code:

APIConnection conn = new APIConnection("Profile=C:\profiles\Pushover.apip;AuthScheme=APIKey;ProfileSettings='APIKey=your_application_token';");
APICommand comm = new APICommand("SELECT User, Memo FROM GroupMembers WHERE GroupKey = 'your_group_key'", conn);
APIDataAdapter da = new APIDataAdapter(comm);
DataSet dataset = new DataSet();
da.Fill(dataset);

chart1.DataSource = dataset;  
chart1.Series[0].XValueMember = "User";
chart1.Series[0].YValueMembers = "Memo";
// Insert code for additional chart formatting here.
chart1.DataBind();