ChildRelationCount Property (DefaultSheetDataModel)

Gets the number of the child data relations for a hierarchical display of data.

Syntax

Visual Basic
C#

'Declaration
 
Public ReadOnly Property ChildRelationCount As Integer

'Usage
 
Dim instance As DefaultSheetDataModel
Dim value As Integer
 
value = instance.ChildRelationCount

public int ChildRelationCount {get;}

Property Value

Integer number of child relations

Example

Visual Basic

Dim conStr As String = "Provider=Microsoft.JET.OLEDB.4.0;data source=D:\\nwind.mdb"
Dim sqlStr As String = "SELECT * FROM Customers"
Dim conn As System.Data.OleDb.OleDbConnection = New System.Data.OleDb.OleDbConnection(conStr)
Dim ds As DataSet = New DataSet()
Dim daCust As System.Data.OleDb.OleDbDataAdapter = New System.Data.OleDb.OleDbDataAdapter(sqlStr, conn)
daCust.Fill(ds, "Customers")
Dim daOrder As System.Data.OleDb.OleDbDataAdapter = New System.Data.OleDb.OleDbDataAdapter(sqlStr, conn)
daOrder.Fill(ds, "Orders")
Dim rel = New DataRelation("CustOrdRel", ds.Tables("Customers").Columns("CustomerID"), ds.Tables("Orders").Columns("CustomerID"))
ds.Relations.Add(rel)
Dim dataModel As New FarPoint.Win.Spread.Model.DefaultSheetDataModel(ds)
FpSpread1.ActiveSheet.Models.Data = dataModel
Dim i As Integer
i = dataModel.ChildRelationCount
ListBox1.Items.Add(i.ToString())

string conStr = "Provider=Microsoft.JET.OLEDB.4.0;data source=D:\\nwind.mdb";
string sqlStr = "SELECT * FROM Customers";
System.Data.OleDb.OleDbConnection conn = new System.Data.OleDb.OleDbConnection(conStr);
DataSet ds = new DataSet();
System.Data.OleDb.OleDbDataAdapter daCust = new System.Data.OleDb.OleDbDataAdapter(sqlStr, conn);
daCust.Fill(ds, "Customers");
System.Data.OleDb.OleDbDataAdapter daOrder = new System.Data.OleDb.OleDbDataAdapter(sqlStr, conn);
daOrder.Fill(ds, "Orders");
DataRelation rel = new DataRelation("CustOrdRel", ds.Tables["Customers"].Columns["CustomerID"], ds.Tables["Orders"].Columns["CustomerID"]);
ds.Relations.Add(rel);
FarPoint.Win.Spread.Model.DefaultSheetDataModel dataModel = new FarPoint.Win.Spread.Model.DefaultSheetDataModel(ds);
fpSpread1.ActiveSheet.Models.Data = dataModel;
int i;
i = dataModel.ChildRelationCount;
listBox1.Items.Add(i.ToString());

Requirements

Target Platforms: Windows 2000 Professional (SP4), Windows 2000 Server, Windows 2003 Server (SP1), Windows Server 2012 R2, Windows 2008, Windows XP (SP2), Windows Vista, Windows 7, Windows 8, Windows 8.1, Windows 10

Reference

DefaultSheetDataModel Class
DefaultSheetDataModel Members