Spread Windows Forms 7.0 Product Documentation
ChildRelationCount Property
See Also  Example Support Options
FarPoint.Win.Spread Assembly > FarPoint.Win.Spread.Model Namespace > IChildModelSupport Interface : ChildRelationCount Property


Glossary Item Box

Gets the number of child data relations.

Syntax

Visual Basic (Declaration) 
ReadOnly Property ChildRelationCount As Integer
Visual Basic (Usage)Copy Code
Dim instance As IChildModelSupport
Dim value As Integer
 
value = instance.ChildRelationCount
C# 
int ChildRelationCount {get;}

Property Value

Integer number of child relations

Example

This example returns the number of child data relations.
C#Copy Code
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 BasicCopy Code
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()

Requirements

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

See Also

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