Spread ASP.NET 14
FarPoint.Web.Spread Assembly / FarPoint.Web.Spread Namespace / SheetView Class / ChildRelationCount Property
Example


In This Topic
    ChildRelationCount Property (SheetView)
    In This Topic
    Gets the number of child views in a hierarchical display for this sheet.
    Syntax
    'Declaration
     
    Public Overridable ReadOnly Property ChildRelationCount As Integer
    'Usage
     
    Dim instance As SheetView
    Dim value As Integer
     
    value = instance.ChildRelationCount
    public virtual int ChildRelationCount {get;}

    Property Value

    Integer number of child relation sheets for this parent sheet.
    Remarks
    This property is available at run time only.
    Example
    This example returns the number of child relations.
    FarPoint.Web.Spread.SheetView sv;
    sv = FpSpread1.ActiveSheetView;
    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"]);
    sv.DataSource = ds;  
    sv.SetColumnWidth(2, 150);
    int i; 
    i = sv.ChildRelationCount;
    TextBox1.Text = i.ToString();
    
    Dim sv As FarPoint.Web.Spread.SheetView
    sv = FpSpread1.ActiveSheetView
    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"))
    sv.DataSource = ds
    sv.SetColumnWidth(2, 150)
    Dim i As Integer
    i = sv.ChildRelationCount()
    TextBox1.Text = i.ToString()
    See Also