GetChildRelation Method (SheetView)

Gets the name of the child data relation in a hierarchical display at the specified index.

Syntax

Visual Basic
C#

'Declaration
 
Public Overridable Function GetChildRelation( _
   ByVal index As Integer _
) As String

'Usage
 
Dim instance As SheetView
Dim index As Integer
Dim value As String
 
value = instance.GetChildRelation(index)

public virtual string GetChildRelation( 
   int index
)

Parameters

index: Relation index

Return Value

String containing the name of the relation

Example

This example binds the spreadsheet to a DataSet, and displays the data in a Hierarchical View. In a button click event expands the first row of the active view and returns the relationship of the first child in the view.

DataSet ds=new System.Data.DataSet();

private void Page_Load(object sender,System.EventArgs e)
{
if(this.IsPostBack)return;

this.CreateDataSet();
FpSpread1.Sheets[0].DataSource=ds;
FpSpread1.Sheets[0].DataMember="names";
FpSpread1.Sheets[0].AllowSort=true;
FpSpread1.Sheets[0].AlternatingRows[0].ForeColor=Color.Teal;
FpSpread1.Sheets[0].SetColumnWidth(2,150);
FpSpread1.RowHeader.Width=40;
FpSpread1.HierBar.ShowParentRow=true;
FpSpread1.HierBar.ShowWholePath=true;
FpSpread1.HierarchicalView=true;
}

private void CreateDataSet()
{
DataTable names;
DataTable cars;
DataTable colors;
names=ds.Tables.Add("names");
names.Columns.Add("first");
names.Columns.Add("last");
names.Columns.Add("index");
names.Rows.Add(Newobject[]{"bob","morris",0});
names.Rows.Add(Newobject[]{"sean","morris",1});
names.Rows.Add(Newobject[]{"chris","morris",2});
cars=ds.Tables.Add("cars");
cars.Columns.Add("make");
cars.Columns.Add("model");
cars.Columns.Add("owner");
cars.Rows.Add(Newobject[]{"ford","F-150",0});
cars.Rows.Add(Newobject[]{"ford","Mustang",1});
cars.Rows.Add(Newobject[]{"chevy","Impala",2});
colors=ds.Tables.Add("colors");
colors.Columns.Add("exterior");
colors.Columns.Add("interior");
colors.Columns.Add("owner");
colors.Rows.Add(Newobject[]{"black","gray",0});
colors.Rows.Add(Newobject[]{"red","beige",1});
colors.Rows.Add(Newobject[]{"black","tan",2});
ds.Relations.Add("cars",names.Columns["index"],cars.Columns["owner"]);
ds.Relations.Add("colors",names.Columns["index"],colors.Columns["owner"]);
}

private void Button1_Click(object sender,System.EventArgs e)
{
FarPoint.Web.Spread.SheetView sv=null;
sv=FpSpread1.ActiveSheetView;
sv.ExpandRow(0,true);
ListBox1.Items.Add(sv.GetChildRelation(0));
}

Visual Basic

Dim ds As New System.Data.DataSet()

Private Sub Page_Load(ByVal sender As System.Object,ByVal e As System.EventArgs)Handles MyBase.Load

If(Me.IsPostBack)Then Return

CreateDataSet()
FpSpread1.Sheets(0).DataSource=ds
FpSpread1.Sheets(0).DataMember="names"
FpSpread1.Sheets(0).AllowSort=True
FpSpread1.Sheets(0).AlternatingRows(0).ForeColor=Color.Teal
FpSpread1.Sheets(0).SetColumnWidth(2,150)
FpSpread1.RowHeader.Width=40
FpSpread1.HierBar.ShowParentRow=True
FpSpread1.HierBar.ShowWholePath=True
FpSpread1.HierarchicalView=True
End Sub

Private Sub CreateDataSet()
Dim names As DataTable
Dim cars As DataTable
Dim colors As DataTable
names=ds.Tables.Add("names")
names.Columns.Add("first")
names.Columns.Add("last")
names.Columns.Add("index")
names.Rows.Add(NewObject(){"bob","morris",0})
names.Rows.Add(NewObject(){"sean","morris",1})
names.Rows.Add(NewObject(){"chris","morris",2})
cars=ds.Tables.Add("cars")
cars.Columns.Add("make")
cars.Columns.Add("model")
cars.Columns.Add("owner")
cars.Rows.Add(NewObject(){"ford","F-150",0})
cars.Rows.Add(NewObject(){"ford","Mustang",1})
cars.Rows.Add(NewObject(){"chevy","Impala",2})
colors=ds.Tables.Add("colors")
colors.Columns.Add("exterior")
colors.Columns.Add("interior")
colors.Columns.Add("owner")
colors.Rows.Add(NewObject(){"black","gray",0})
colors.Rows.Add(NewObject(){"red","beige",1})
colors.Rows.Add(NewObject(){"black","tan",2})
ds.Relations.Add("cars",names.Columns("index"),cars.Columns("owner"))
ds.Relations.Add("colors",names.Columns("index"),colors.Columns("owner"))
End Sub

Private Sub Button1_Click(ByVal sender As System.Object,ByVal e As System.EventArgs)Handles Button1.Click
Dim sv As FarPoint.Web.Spread.SheetView
sv=FpSpread1.ActiveSheetView
sv.ExpandRow(0,True)
ListBox1.Items.Add(sv.GetChildRelation(0))
End Sub

Reference

SheetView Class
SheetView Members

User-Task Documentation

Displaying Data as a Hierarchy