Expands or collapses the specified parent row, which shows or hides the child view in a hierarchical display.

Syntax

Visual Basic (Declaration)
Public Sub ExpandRow( _ ByVal row As Integer, _ ByVal expand As Boolean _ )

Visual Basic (Usage)	Copy Code
Dim instance As SheetView Dim row As Integer Dim expand As Boolean instance.ExpandRow(row, expand)

C#
public void ExpandRow( int row, bool expand )

Parameters

row: Index of parent row to expand or collapse
expand: Whether to expand and show the child sheet (or collapse and hide it)

Return Value

If expand is set to true, the hierarchy is expanded and the child sheet(s) is (are) displayed. If it is set to false, the hierarchy is collapsed and the child sheet(s) is (are) hidden.

Exceptions

Exception	Description
System.ArgumentOutOfRangeException	Specified parent row index is out of range; must be between 0 and the total number of rows

Remarks

The Expand event does not fire when using the sheet view ExpandRow method.

Example

This example expands the second child view of the spreadsheet.

C#	Copy Code
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.ActiveSheet.DataSource = ds; fpSpread1.ActiveSheet.DataMember = "Customers"; fpSpread1.ActiveSheet.SetColumnWidth(2, 150); bool b; fpSpread1.ActiveSheet.ExpandRow(1, true); b = fpSpread1.ActiveSheet.IsRowExpanded(1); listBox1.Items.Add(b.ToString());

Copy Code

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.ActiveSheet.DataSource = ds;  
fpSpread1.ActiveSheet.DataMember = "Customers";
fpSpread1.ActiveSheet.SetColumnWidth(2, 150);  
bool b;
fpSpread1.ActiveSheet.ExpandRow(1, true);
b = fpSpread1.ActiveSheet.IsRowExpanded(1);
listBox1.Items.Add(b.ToString());

Visual Basic	Copy Code
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")) Dim b As Boolean FpSpread1.ActiveSheet.DataSource = ds FpSpread1.ActiveSheet.DataMember = "Customers" FpSpread1.ActiveSheet.SetColumnWidth(2, 150) FpSpread1.ActiveSheet.ExpandRow(1, True) b = FpSpread1.ActiveSheet.IsRowExpanded(1) ListBox1.Items.Add(b.ToString())

Visual Basic

Copy Code

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"))
Dim b As Boolean
FpSpread1.ActiveSheet.DataSource = ds
FpSpread1.ActiveSheet.DataMember = "Customers"
FpSpread1.ActiveSheet.SetColumnWidth(2, 150)
FpSpread1.ActiveSheet.ExpandRow(1, True)
b = FpSpread1.ActiveSheet.IsRowExpanded(1)
ListBox1.Items.Add(b.ToString())

Requirements

Target Platforms: Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2