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Determining the Number of Child Bands

Sometimes when you write code to traverse the WinGrid™, it is necessary to know the number of child bands of a particular band. The WinGrid control provides this information through the ChildBands property of the Band object.

To determine the number of child bands:

  1. Before you start writing any code, you should place using/imports directives in your code-behind so you don’t need to always type out a member’s fully qualified name.

In Visual Basic:

Imports Infragistics.Win.UltraWinGrid

In C#:

using Infragistics.Win.UltraWinGrid;

  1. Declare a function called GetNumberOfChildBands. This function will accept a Band object and return the number of child bands.

In Visual Basic:

Private Function GetNumberOfChildBands(ByVal aBand As _
  Infragistics.Win.UltraWinGrid.UltraGridBand) As Integer

In C#:

private int GetNumberofChildBands(Infragistics.Win.UltraWinGrid.UltraGridBand aBand)
{

  1. A band object is actually a special type of column. You can take advantage of this by looping through the columns in the band. Set up a For…​Each Loop to go through the columns in the Band that was passed into the Function.

In Visual Basic:

Dim aCol As UltraGridColumn
For Each aCol In aBand.Columns

In C#:

int GetNumberofChildBands = 0;
foreach(UltraGridColumn aCol in aBand.Columns)
{

  1. You can now check each column one at a time and determine if it is a Band.

In Visual Basic:

If aCol.IsChaptered Then

In C#:

if(aCol.IsChaptered)

  1. If the column is a band, add one to the return value of the function.

In Visual Basic:

	GetNumberOfChildBands = GetNumberOfChildBands + 1
End If

In C#:

	GetNumberofChildBands = GetNumberofChildBands + 1;
}

  1. Then just close the loop.

In Visual Basic:

Next aCol

In C#:

	return GetNumberofChildBands;
}