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DataBind Charts to Bullhorn CRM Data


Use the standard ADO.NET procedures for databinding to provide bidirectional access to Bullhorn CRM 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 Bullhorn CRM streamlines the process of binding Bullhorn CRM data to Windows Forms and Web controls within Visual Studio. In this article, we will demonstrate using wizards to establish a binding between Bullhorn CRM 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.

DataBind to a Chart

DataBinding 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 Bullhorn CRM, follow the steps outlined below using the Data Source Configuration Wizard. Within the wizard, you'll have the option to choose the specific Bullhorn CRM 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 Bullhorn CRM Data Source.

    Below is a typical connection string:

    DataCenterCode=CLS33;OAuthClientId=myoauthclientid;OAuthClientSecret=myoauthclientsecret;InitiateOAuth=GETANDREFRESH

    Begin by providing your Bullhorn CRM account credentials in the following:

    If you are uncertain about your data center code, codes like CLS2, CLS21, etc. are cluster IDs that are contained in a user's browser URL (address bar) once they are logged in.

    Example: https://cls21.bullhornstaffing.com/BullhornSTAFFING/MainFrame.jsp?#no-ba... indicates that the logged in user is on CLS21.

    Authenticating with OAuth

    Bullhorn CRM uses the OAuth 2.0 authentication standard. To authenticate using OAuth, create and configure a custom OAuth app. See the Help documentation for more information.

    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 Candidate 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 CandidateName.

  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 Bullhorn CRM data. Run the chart to display the current data.

Code Walk-through

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

  1. Connect to Bullhorn CRM.
  2. Create the BullhornCRMDataAdapter 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:

BullhornCRMConnection conn = new BullhornCRMConnection("DataCenterCode=CLS33;OAuthClientId=myoauthclientid;OAuthClientSecret=myoauthclientsecret;InitiateOAuth=GETANDREFRESH"); BullhornCRMCommand comm = new BullhornCRMCommand("SELECT Id, CandidateName FROM Candidate WHERE CandidateName = 'Jane Doe'", conn); BullhornCRMDataAdapter da = new BullhornCRMDataAdapter(comm); DataSet dataset = new DataSet(); da.Fill(dataset); chart1.DataSource = dataset; chart1.Series[0].XValueMember = "Id"; chart1.Series[0].YValueMembers = "CandidateName"; // Insert code for additional chart formatting here. chart1.DataBind();