Spread for ASP.NET 13 Product Documentation
FarPoint.Web.Spread Assembly / FarPoint.Web.Spread Namespace / SheetView Class / ExpandRow Method
Row index
True to expand; false to collapse
Example


In This Topic
    ExpandRow Method
    In This Topic
    Expands or collapses the specified row in the hierarchical display.
    Syntax
    'Declaration
     
    Public Sub ExpandRow( _
       ByVal row As Integer, _
       ByVal expand As Boolean _
    ) 
    'Usage
     
    Dim instance As SheetView
    Dim row As Integer
    Dim expand As Boolean
     
    instance.ExpandRow(row, expand)
    public void ExpandRow( 
       int row,
       bool expand
    )

    Parameters

    row
    Row index
    expand
    True to expand; false to collapse
    Exceptions
    ExceptionDescription
    Specified row is out of range; must be between 0 and the number of rows
    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));
    }
    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
    See Also