Learn more
 

DataBind Charts to Greenhouse Data


Use the standard ADO.NET procedures for databinding to provide bidirectional access to Greenhouse 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 Greenhouse streamlines the process of binding Greenhouse data to Windows Forms and Web controls within Visual Studio. In this article, we will demonstrate using wizards to establish a binding between Greenhouse 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 Greenhouse, follow the steps outlined below using the Data Source Configuration Wizard. Within the wizard, you'll have the option to choose the specific Greenhouse 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 Greenhouse Data Source.

    Below is a typical connection string:

    APIKey=YourAPIKey;

    You need an API key to connect to Greenhouse. To create an API key, follow the steps below:

    1. Click the Configure icon in the navigation bar and locate Dev Center on the left.
    2. Select API Credential Management.
    3. Click Create New API Key.
      • Set "API Type" to Harvest.
      • Set "Partner" to custom.
      • Optionally, provide a description.
    4. Proceed to Manage permissions and select the appropriate permissions based on the resources you want to access through the driver.
    5. Copy the created key and set APIKey to that value.

    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 Applications 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 Id and the y-axis to CandidateId.

  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 Greenhouse data. Run the chart to display the current data.

Code Walk-through

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

  1. Connect to Greenhouse.
  2. Create the GreenhouseDataAdapter 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:

GreenhouseConnection conn = new GreenhouseConnection("APIKey=YourAPIKey;"); GreenhouseCommand comm = new GreenhouseCommand("SELECT Id, CandidateId FROM Applications WHERE Status = 'Active'", conn); GreenhouseDataAdapter da = new GreenhouseDataAdapter(comm); DataSet dataset = new DataSet(); da.Fill(dataset); chart1.DataSource = dataset; chart1.Series[0].XValueMember = "Id"; chart1.Series[0].YValueMembers = "CandidateId"; // Insert code for additional chart formatting here. chart1.DataBind();

Ready to get started?

Download a free trial of the Greenhouse Data Provider to get started:

 Download Now

Learn more:

Greenhouse Icon Greenhouse ADO.NET Provider

Rapidly create and deploy powerful .NET applications that integrate with Greenhouse.

In this article

Related articles