IsEmpty Method (DefaultSheetDataModel)

Visual Basic
C#

'Declaration
 
Public Overrides Function IsEmpty() As Boolean

'Usage
 
Dim instance As DefaultSheetDataModel
Dim value As Boolean
 
value = instance.IsEmpty()

public override bool IsEmpty()

Return Value

true if the model has no data; false otherwise

To check if the cell contents are editable, use the IsEditable method.

This example binds the DefaultSheetDataModel to a DataTable and the values of the IsColumnBound, IsEditable, IsEmpty and IsRowUsed are returned to a list box.

C#

Private void Page_Load(object sender, System.EventArgs e)
{
  If (this.IsPostBack) Return;

  bool b, b1, b2, b3;
  DataTable dt = New DataTable("FarPoint");
  dt.Columns.Add("Product");
  dt.Rows.Add(New Object[] {"SpreadWebv2"});
  dt.Rows.Add(New Object[] {"InputPro for WinForms"});
  DataRow nrow;
  nrow = dt.NewRow();
  nrow["Product"] = "To Be Announced";
  dt.Rows.Add(nrow);
  dt.AcceptChanges();
  FarPoint.Web.Spread.Model.DefaultSheetDataModel dm = New FarPoint.Web.Spread.Model.DefaultSheetDataModel(dt);
  FpSpread1.ActiveSheetView.DataModel = dm;
  FpSpread1.ActiveSheetView.Columns[0].Width = 240;
  b = dm.IsColumnBound(0);
  b1 = dm.IsEditable(0,0);
  b2 = dm.IsEmpty();
  b3 = dm.IsRowUsed(1);
  ListBox1.Items.Add(b.ToString());
  ListBox1.Items.Add(b1.ToString());
  ListBox1.Items.Add(b2.ToString());
  ListBox1.Items.Add(b3.ToString());
}

Visual Basic

Private Sub Page_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load

   If (Me.IsPostBack) Then Return

   Dim b, b1, b2, b3 As Boolean
   Dim dt As New DataTable("FarPoint")
   dt.Columns.Add("Product")
   dt.Rows.Add(New Object() {"SpreadWebv2"})
   dt.Rows.Add(New Object() {"InputPro for WinForms"})
   Dim nrow As DataRow
   nrow = dt.NewRow()
   nrow("Product") = "To Be Announced"
   dt.Rows.Add(nrow)
   dt.AcceptChanges()
   Dim dm As FarPoint.Web.Spread.Model.DefaultSheetDataModel = New FarPoint.Web.Spread.Model.DefaultSheetDataModel(dt)
   FpSpread1.ActiveSheetView.DataModel = dm
   FpSpread1.ActiveSheetView.Columns(0).Width = 240
   b = dm.IsColumnBounded(0)
   b1 = dm.IsEditable(0, 0)
   b2 = dm.IsEmpty()
   b3 = dm.IsRowUsed(1)
   ListBox1.Items.Add(b.ToString())
   ListBox1.Items.Add(b1.ToString())
   ListBox1.Items.Add(b2.ToString())
   ListBox1.Items.Add(b3.ToString())

 End Sub

Reference

DefaultSheetDataModel Class
DefaultSheetDataModel Members