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DataBind Charts to Oracle SCM Data


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

    Below is a typical connection string:

    Url=https://myinstance.oraclecloud.com;User=user;Password=password;

    The following connection properties are required to connect to Oracle SCM data.

    • Url: The URL of the account that you want to connect to. Typically, this will be the URL of your Oracle Cloud service. For example, https://servername.fa.us2.oraclecloud.com.
    • User: The username of your Oracle Cloud service account.
    • Password: The password of your Oracle Cloud service account.

    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 Carriers 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 CarrierId and the y-axis to CarrierName.

  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 Oracle SCM data. Run the chart to display the current data.

Code Walk-through

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

  1. Connect to Oracle SCM.
  2. Create the OracleSCMDataAdapter 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:

OracleSCMConnection conn = new OracleSCMConnection("Url=https://myinstance.oraclecloud.com;User=user;Password=password;"); OracleSCMCommand comm = new OracleSCMCommand("SELECT CarrierId, CarrierName FROM Carriers WHERE ActiveFlag = 'false'", conn); OracleSCMDataAdapter da = new OracleSCMDataAdapter(comm); DataSet dataset = new DataSet(); da.Fill(dataset); chart1.DataSource = dataset; chart1.Series[0].XValueMember = "CarrierId"; chart1.Series[0].YValueMembers = "CarrierName"; // Insert code for additional chart formatting here. chart1.DataBind();