Expand Event

Occurs when a row is expanded or collapsed.

Syntax

Visual Basic
C#

'Declaration
 
Public Event Expand As ExpandEventHandler

'Usage
 
Dim instance As FpSpread
Dim handler As ExpandEventHandler
 
AddHandler instance.Expand, handler

public event ExpandEventHandler Expand

Event Data

The event handler receives an argument of type ExpandEventArgs containing data related to this event. The following ExpandEventArgs properties provide information specific to this event.

Property	Description
Cancel	(Inherited from System.ComponentModel.CancelEventArgs)
Expand	Gets whether the row is going to be expanded.
Row	Gets the row to expand or collapse.
View	Gets the view that contains the row to be expanded or collapsed.

Remarks

This event is raised by the OnExpand method when a row is expanded or collapsed.

For more details on the individual event arguments, refer to ExpandEventArgs members.

Example

This example raises the Expand event when a row is expanded or collapsed.

System.Data.DataSet ds = new System.Data.DataSet();
DataTable name; 
DataTable city; 
name = ds.Tables.Add("Customers"); 
name.Columns.AddRange(new DataColumn[] {new DataColumn("LastName", typeof(string)), new DataColumn("FirstName", typeof(string)),
new DataColumn("ID", typeof(Int32))}); 
name.Rows.Add(new object[] {"Fielding", "William", 0}); 
name.Rows.Add(new object[] {"Williams", "Arthur", 1}); 
name.Rows.Add(new object[] {"Zuchini", "Theodore", 2}); 
city = ds.Tables.Add("City/State"); 
city.Columns.AddRange(new DataColumn[] {new DataColumn("City", typeof(string)), new DataColumn("Owner", typeof(Int32)), new
DataColumn("State", typeof(string))}); 
city.Rows.Add(new object[] {"Atlanta", 0, "Georgia"}); 
city.Rows.Add(new object[] {"Boston", 1, "Mass."}); 
city.Rows.Add(new object[] {"Tampa", 2, "Fla."}); 
ds.Relations.Add("City/State", name.Columns["ID"], city.Columns["Owner"]); 
fpSpread1.DataSource = ds;
fpSpread1.DataMember = "Customers";
Label1.Text = "Click on one of the + next to a row to fire the event";

private void fpSpread1_Expand(object sender, FarPoint.Win.Spread.ExpandEventArgs e)
{
     ListBox1.Items.Add("Expand event fired!");
}

Visual Basic

Dim ds As New System.Data.DataSet()
Dim name As DataTable
Dim city As DataTable
name = ds.Tables.Add("Customers")
name.Columns.AddRange(New DataColumn() {New DataColumn("LastName", Type.GetType("System.String")), New DataColumn("FirstName",
Type.GetType("System.String")), New DataColumn("ID", Type.GetType("System.Int32"))})
name.Rows.Add(New Object() {"Fielding", "William", 0})
name.Rows.Add(New Object() {"Williams", "Arthur", 1})
name.Rows.Add(New Object() {"Zuchini", "Theodore", 2})
city = ds.Tables.Add("City/State")
city.Columns.AddRange(New DataColumn() {New DataColumn("City", Type.GetType("System.String")), New DataColumn("Owner", Type.GetType("System.Int32")),
New DataColumn("State", Type.GetType("System.String"))})
city.Rows.Add(New Object() {"Atlanta", 0, "Georgia"})
city.Rows.Add(New Object() {"Boston", 1, "Mass."})
city.Rows.Add(New Object() {"Tampa", 2, "Fla."})
ds.Relations.Add("City/State", name.Columns("ID"), city.Columns("Owner"))
FpSpread1.DataSource = ds
FpSpread1.DataMember = "Customers"
Label1.Text = "Click on one of the + next to a row to fire the event"

Private Sub FpSpread1_Expand(ByVal sender As Object, ByVal e As FarPoint.Win.Spread.ExpandEventArgs) Handles FpSpread1.Expand
     ListBox1.Items.Add("Expand event fired!")
End Sub

Reference

FpSpread Class
FpSpread Members
ExpandEventArgs Class

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