How to set programically Infragistics ultraGrid headers groups

Infragistics ultragrid is very flexible control.

One of nice option is header groups and levels which is not very common knowledge.

Grouped columns look like this:

 

To archieve that the easiest way is use built-in grid's designer.

But if you want to do the same in runtime (set groups programically) you can look at below code snippet:

<br /></P><P>// Create data table<br />DataTable dt = new DataTable();<br />dt.Columns.Add("First Name");<br />dt.Columns.Add("Second Name");<br />dt.Columns.Add("Salary");<br />dt.Columns.Add("Taxes");<br /><br />dt.Rows.Add("Joe","Smith",120000,1000);<br />dt.Rows.Add("Mariah","Carry",1500000,10000);<br /><br /><br />// Bind Datasource<br />ultraGrid1.DataSource = dt;<br /><br /><br />// Create Groups<br />Infragistics.Win.UltraWinGrid.UltraGridGroup group1 = new Infragistics.Win.UltraWinGrid.UltraGridGroup( "Personal Info",1); // key + unique id<br />Infragistics.Win.UltraWinGrid.UltraGridGroup group2 = new Infragistics.Win.UltraWinGrid.UltraGridGroup( "Salary Info",2);            <br /><br />// Add Groups to BAND<br />ultraGrid1.DisplayLayout.Bands[0].Groups.Add( group1 );<br />ultraGrid1.DisplayLayout.Bands[0].Groups.Add( group2 );<br /><br />// *** Assign columns to groups **<br /><br />// option 1 Through gropus Columns<br />group1.Columns.Add( ultraGrid1.DisplayLayout.Bands[0].Columns[0] );<br />group1.Columns.Add( ultraGrid1.DisplayLayout.Bands[0].Columns[1] );<br />group2.Columns.Add( ultraGrid1.DisplayLayout.Bands[0].Columns[2] );<br />group2.Columns.Add( ultraGrid1.DisplayLayout.Bands[0].Columns[3] );<br /><br />// option 2 Columns group<br />//ultraGrid1.DisplayLayout.Bands[0].Columns[0] .Group = group1;<br /> </P><br />