In this tutorial, you will learn how to display Master Detail DataSet information through the grid's hierarchical display. This tutorial is similar to Tutorial 3: Linking Multiple True DBGrid Controls, but this tutorial displays the same master detail information as Tutorial 3: Linking Multiple True DBGrid Controls, except it only uses one C1TrueDBGrid object.

Complete the following steps:

1. Start by setting up a form with a grid and Master Detail DataSet by following the steps in Tutorial 3: Linking Multiple True DBGrid Controls.
2. In the Properties window, set the DataSource property of the grid to dsMasterDetail and the DataMember property to Composer.
3. Next in the Load event of Form1 add the following code, which fills both the DataAdapters and sets the grid's display to hierarchical:

   To write code in Visual Basic

   Visual Basic	Copy Code
   Me.ComposerTableAdapter.Fill(Me.DsMasterDetail.Composer) Me.OpusTableAdapter.Fill(this.DsMasterDetail.Opus) Me.C1TrueDBGrid1.DataView = C1.Win.C1TrueDBGrid.DataViewEnum.Hierarchical

   To write code in C#

   C#	Copy Code
   this.ComposerTableAdapter.Fill(this.DsMasterDetail.Composer); this.OpusTableAdapter.Fill(this.DsMasterDetail.Opus); this.c1TrueDBGrid1.DataView = C1.Win.C1TrueDBGrid.DataViewEnum.Hierarchical;

Run the program and observe the following:

• C1TrueDBGrid1 displays the Composers table as it would if it were bound to it, but each row has an expand icon. Expand one of the rows. Notice that the associated Opus column data is displayed in the far columns of the grid. The data showing relates to the record in the Composers table that was expanded:
  

You've successfully completed using the hierarchical display; this concludes the tutorial.