ChildRelationCount Property (IChildModelSupport)

Visual Basic
C#

'Declaration
 
ReadOnly Property ChildRelationCount As Integer

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

int ChildRelationCount {get;}

Property Value

Integer number of child relations

This example returns the number of child data relations.

C#

string conStr = "Provider=Microsoft.JET.OLEDB.4.0;data source= " + Application.StartupPath + "\\Patients2000.mdb";
string sqlStr = "SELECT * FROM Patients";
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, "Patients");
System.Data.OleDb.OleDbDataAdapter daOrder = new System.Data.OleDb.OleDbDataAdapter(sqlStr, conn);
daOrder.Fill(ds, "Appointment");
DataRelation rel = new DataRelation("PatientRel", ds.Tables["Patients"].Columns["LName"], ds.Tables["Appointment"].Columns["LName"]);
ds.Relations.Add(rel);
fpSpread1.DataSource = ds;
FarPoint.Win.Spread.Model.IChildModelSupport cModel;
int i;
cModel = (FarPoint.Win.Spread.Model.IChildModelSupport)fpSpread1.ActiveSheet.Models.Data;
i = cModel.ChildRelationCount;
label1.Text = "The number of child relatio is " + i;

Visual Basic

Dim conStr As String = "Provider=Microsoft.JET.OLEDB.4.0;data source= " & Application.StartupPath & "\Patients2000.mdb"
Dim sqlStr As String = "SELECT * FROM Patients"
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, "Patients")
Dim daOrder As System.Data.OleDb.OleDbDataAdapter = New System.Data.OleDb.OleDbDataAdapter(sqlStr, conn)
daOrder.Fill(ds, "Appointment")
Dim rel = New DataRelation("PatientRel", ds.Tables("Patients").Columns("LName"), ds.Tables("Appointment").Columns("LName"))
ds.Relations.Add(rel)
FpSpread1.DataSource = ds
Dim cModel As FarPoint.Win.Spread.Model.IChildModelSupport
Dim i As Integer
cModel = FpSpread1.ActiveSheet.Models.Data
i = cModel.ChildRelationCount
Label1.Text = "The number of child relations is " & i.ToString()

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

IChildModelSupport Interface
IChildModelSupport Members