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Sorting Overview

Background

WinGrid™ can allow the user to sort on both single and multiple columns by clicking on the column headers. The developer can also instruct UltraWinGrid to sort on a column.

Questions

  • How do I instruct UltraWinGrid to allow the user to sort when the user clicks on a column header?

  • The data retrieved from the database is not sorted in the order I would like for it to display in UltraWinGrid. How do I tell UltraWinGrid to sort on a column with code?

Solutions

Instruct UltraWinGrid to allow user sorting by setting the .HeaderClickAction property to either .SortSingle or .SortMulti.

Instruct UltraWinGrid to sort on a particular column with code by setting the Column.SortIndicator to Descending.

Sample Project

This sample project displays a multi-band grid configured to sort when the user clicks on the various column headers. It also provides a button which causes the grid to sort on band 1 column 3.

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;
sorting columns in ultragrid

The UltraWinGrid Events Region contains the following event handlers:

  • UltraGrid1.InitializeLayout - The code in the InitializeLayout event sets the default HeaderClickAction for all bands and all columns:

In Visual Basic:

Private Sub UltraGrid1_InitializeLayout(ByVal sender As Object, _
  ByVal e As Infragistics.Win.UltraWinGrid.InitializeLayoutEventArgs) _
  Handles UltraGrid1.InitializeLayout
  	e.Layout.Override.HeaderClickAction = HeaderClickAction.SortSingle
End Sub

In C#:

private void ultraGrid1_InitializeLayout(object sender,
  Infragistics.Win.UltraWinGrid.InitializeLayoutEventArgs e)
{
	e.Layout.Override.HeaderClickAction = HeaderClickAction.SortSingle;
}

Button Events

  • Button1.Click - The code in the Button Click event instructs the UltraWinGrid to sort on band 1 column 2 in Descending order:

In Visual Basic:

Private Sub btnSortBand1Column2_Click(ByVal sender As System.Object, _
  ByVal e As System.EventArgs) Handles btnSortBand1Column3.Click
	Me.UltraGrid1.DisplayLayout.Bands(1).Columns(2).SortIndicator = _
	  SortIndicator.Descending
End Sub

In C#:

private void btnSortBand1Column2_Click(object sender, EventArgs e)
{
	this.ultraGrid1.DisplayLayout.Bands[1].Columns[2].SortIndicator =
	  SortIndicator.Descending;
}

Review

This sample program illustrates the property settings used to allow the user to sort column data when clicking on the column headers, and how to sort on a specified column using code.