Spread Windows Forms 12.0 Product Documentation
Displaying a Footer for Columns or Groups
Spread Windows Forms 12.0 Product Documentation > Developer's Guide > Customizing the Sheet Appearance > Customizing the Individual Sheet Appearance > Displaying a Footer for Columns or Groups

You can show a column footer, a group footer, or both for the sheet and put information in the footer such as formulas or text. The column footer is an area at the bottom of the sheet. The group footer is an extra row of footer cells at the bottom of a sheet with grouping, if you are using the grouping feature.

For details on the API, refer to the ColumnFooter property of the SheetView class and the various members of the ColumnFooter class.

To calculate the column footer or group footer result with a formula, set the SetAggregationType method of the ColumnFooter object to the correct formula type for that column. The following figure displays a group bar and a column footer with a formula in the column:

Spread control with red grid lines

The group footer is an extra row that is displayed below the group after grouping by a column header. The GroupFooterVisible property must be set to true after the group has been created. The Grouped event can be used to put information in the group footer after a user has created the group.

For more information on grouping, refer to Managing Grouping of Rows of User Data.

For more information about setting the group appearance, refer to Setting the Appearance of Grouped Rows.

For more information on column appearance, refer to Customizing the Row or Column Appearance.

Properties Window

  1. At design time, in the Properties window, select the Sheets property for the FpSpread component.
  2. Click the button to display the SheetView Collection Editor.
  3. Select the ColumnFooter property or the GroupFooter property or both in the Property list and set Visible to true.
  4. Click OK to close the editor.

Using a Shortcut

Set the Visible property of the ColumnFooter for the sheet.

Example

This example code displays a column footer and sets a span and a text color.

C#
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fpSpread1.Sheets[0].RowCount = 10;
fpSpread1.Sheets[0].ColumnCount = 15;
// Show the column footer.
fpSpread1.Sheets[0].ColumnFooter.Visible = true;
fpSpread1.Sheets[0].ColumnFooter.RowCount = 2;
fpSpread1.Sheets[0].ColumnFooter.DefaultStyle.ForeColor = Color.Purple;
fpSpread1.Sheets[0].ColumnFooter.Columns[12].HorizontalAlignment = FarPoint.Win.Spread.CellHorizontalAlignment.Left;
fpSpread1.Sheets[0].ColumnFooter.Cells[0, 12].RowSpan = 2;
fpSpread1.Sheets[0].ColumnFooter.Cells[0, 0].Value = "test";
VB
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FpSpread1.Sheets(0).RowCount = 10
fpSpread1.Sheets(0).ColumnCount = 15
' Show the footer.
fpSpread1.Sheets(0).ColumnFooter.Visible = true
fpSpread1.Sheets(0).ColumnFooter.RowCount = 2
fpSpread1.Sheets(0).ColumnFooter.DefaultStyle.ForeColor = Color.Purple
fpSpread1.Sheets(0).ColumnFooter.Columns(12).HorizontalAlignment = FarPoint.Win.Spread.CellHorizontalAlignment.Left
fpSpread1.Sheets(0).ColumnFooter.Cells(0, 12).RowSpan = 2
fpSpread1.Sheets(0).ColumnFooter.Cells(0, 0).Value = "test

Using a Shortcut

  1. Set the Visible property of the ColumnFooter for the sheet.
  2. Set the SetAggregationType method for the column.

Example

This example sums the values in the first column and displays them in the column footer. The example also sums the values in the second group and puts them in the group footer.

C#
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private void Form1_Load(object sender, System.EventArgs e)
{
fpSpread1.Sheets[0].RowCount=8;
fpSpread1.Sheets[0].ColumnCount = 15;
fpSpread1.Sheets[0].GroupBarInfo.Visible = true;
fpSpread1.Sheets[0].AllowGroup = true;
fpSpread1.Sheets[0].GroupFooterVisible = true;
fpSpread1.Sheets[0].ColumnFooter.Visible = true;
fpSpread1.Sheets[0].ColumnFooter.RowCount = 2;
fpSpread1.Sheets[0].ColumnFooter.Columns[12].HorizontalAlignment = FarPoint.Win.Spread.CellHorizontalAlignment.Left;
fpSpread1.Sheets[0].ColumnFooter.Cells[0, 12].RowSpan = 2;
//Value
for (int r = 0; r < fpSpread1.Sheets[0].RowCount; r++)
{
for (int j = 0; j < fpSpread1.Sheets[0].ColumnCount; j++)
{
fpSpread1.Sheets[0].Models.Data.SetValue(r, j, j + r * fpSpread1.Sheets[0].ColumnCount);
}
}
int i = 0;
fpSpread1.Sheets[0].ColumnFooter.SetAggregationType(0,1, FarPoint.Win.Spread.Model.AggregationType.Sum);
fpSpread1.Sheets[0].ColumnFooter.Cells[0, i].Value = "Sum";
}

private void fpSpread1_Grouped(object sender, EventArgs e)
FarPoint.Win.Spread.Model.GroupDataModel gdm;
gdm = (FarPoint.Win.Spread.Model.GroupDataModel)fpSpread1.ActiveSheet.Models.Data;
gdm.GroupFooterVisible = true;
FarPoint.Win.Spread.Model.Group g1 = (FarPoint.Win.Spread.Model.Group)gdm.Groups[1];
((FarPoint.Win.Spread.Model.IAggregationSupport)g1.GroupFooter.DataModel).SetCellAggregationType(0, 0,
FarPoint.Win.Spread.Model.AggregationType.Sum);
fpSpread1.ActiveSheet.Models.Data = gdm;
}
VB
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Private Sub Form1_Load(sender As Object, e As EventArgs) Handles MyBase.Load
fpSpread1.Sheets(0).RowCount = 8
fpSpread1.Sheets(0).ColumnCount = 15
fpSpread1.Sheets(0).GroupBarInfo.Visible = True
fpSpread1.Sheets(0).AllowGroup = True
fpSpread1.Sheets(0).GroupFooterVisible = True
fpSpread1.Sheets(0).ColumnFooter.Visible = True
fpSpread1.Sheets(0).ColumnFooter.RowCount = 2
fpSpread1.Sheets(0).ColumnFooter.Columns(12).HorizontalAlignment = FarPoint.Win.Spread.CellHorizontalAlignment.Left
'Value
Dim r As Integer
Dim j As Integer
For r = 0 To fpSpread1.Sheets(0).RowCount
For j = 0 To fpSpread1.Sheets(0).ColumnCount
fpSpread1.Sheets(0).Models.Data.SetValue(r, j, j + r * fpSpread1.Sheets(0).ColumnCount)
Next j
Next r
Dim i As Integer
i = 0
fpSpread1.Sheets(0).ColumnFooter.SetAggregationType(0, 1, FarPoint.Win.Spread.Model.AggregationType.Sum)
fpSpread1.Sheets(0).ColumnFooter.Cells(0, i).Value = "Sum"
End Sub

Private Sub fpSpread1_Grouped(ByVal sender As Object, ByVal e As System.EventArgs) Handles fpSpread1.Grouped
Dim gdm As FarPoint.Win.Spread.Model.GroupDataModel
Dim g1 As FarPoint.Win.Spread.Model.Group
gdm = fpSpread1.Sheets(0).Models.Data
gdm.GroupFooterVisible = True
g1 = gdm.Groups(1)
CType(g1.GroupFooter.DataModel, FarPoint.Win.Spread.Model.IAggregationSupport).SetCellAggregationType(0, 0, FarPoint.Win.Spread.Model.AggregationType.Sum)
fpSpread1.ActiveSheet.Models.Data = gdm
End Sub

Example

This example code displays a column footer and adds a formula from a different sheet.

C#
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fpSpread1.Sheets.Count = 3;
fpSpread1.Sheets[0].RowCount = 8;
fpSpread1.Sheets[0].ColumnCount = 15;
fpSpread1.Sheets[0].GroupBarInfo.Visible = true;
fpSpread1.Sheets[0].AllowGroup = true;
fpSpread1.Sheets[0].GroupFooterVisible = true;
fpSpread1.Sheets[0].ColumnFooter.Visible = true;
fpSpread1.Sheets[0].ColumnFooter.RowCount = 2;
fpSpread1.Sheets[0].ColumnFooter.Columns[12].HorizontalAlignment = FarPoint.Win.Spread.CellHorizontalAlignment.Left;
fpSpread1.Sheets[0].ColumnFooter.Cells[0, 12].RowSpan = 2;
//Value
for (int r = 0; r < fpSpread1.Sheets[0].RowCount; r++)
{
    for (int j = 0; j < fpSpread1.Sheets[0].ColumnCount; j++)
    {
        fpSpread1.Sheets[0].Models.Data.SetValue(r, j, j + r * fpSpread1.Sheets[0].ColumnCount);
    }
}

int i = 0;        
fpSpread1.Sheets[1].RowCount = 10;
fpSpread1.Sheets[1].ColumnCount = 15;
fpSpread1.Sheets[1].GroupBarInfo.Visible = true;
fpSpread1.Sheets[1].AllowGroup = true;
fpSpread1.Sheets[1].GroupFooterVisible = true;
fpSpread1.Sheets[1].ColumnFooter.Visible = true;
fpSpread1.Sheets[1].ColumnFooter.RowCount = 2;
fpSpread1.Sheets[1].ColumnFooter.Columns[12].HorizontalAlignment = FarPoint.Win.Spread.CellHorizontalAlignment.Left;
fpSpread1.Sheets[1].ColumnFooter.Cells[0, 12].RowSpan = 2;
//Value
for (int r = 0; r < fpSpread1.Sheets[1].RowCount; r++)
{
    for (int j = 0; j < fpSpread1.Sheets[1].ColumnCount; j++)
    {
        fpSpread1.Sheets[1].Models.Data.SetValue(r, j, j + r * fpSpread1.Sheets[1].ColumnCount);
    }
}
         
fpSpread1.Sheets[0].ColumnFooter.Cells[0, i].Value = "2ndSum";
fpSpread1.Sheets[0].ColumnFooter.Cells[0, 1].Formula = "SUM(Sheet2!A:A)";
VB
Copy Code

FpSpread1.Sheets.Count = 3
fpSpread1.Sheets(0).RowCount = 8
fpSpread1.Sheets(0).ColumnCount = 15
fpSpread1.Sheets(0).GroupBarInfo.Visible = True
fpSpread1.Sheets(0).AllowGroup = True
fpSpread1.Sheets(0).GroupFooterVisible = True
fpSpread1.Sheets(0).ColumnFooter.Visible = True
fpSpread1.Sheets(0).ColumnFooter.RowCount = 2
fpSpread1.Sheets(0).ColumnFooter.Columns(12).HorizontalAlignment = FarPoint.Win.Spread.CellHorizontalAlignment.Left
'Value
Dim r As Integer
Dim j As Integer
For r = 0 To fpSpread1.Sheets(0).RowCount
    For j = 0 To fpSpread1.Sheets(0).ColumnCount
        fpSpread1.Sheets(0).Models.Data.SetValue(r, j, j + r * fpSpread1.Sheets(0).ColumnCount)
    Next j
Next r

fpSpread1.Sheets(1).RowCount = 10
fpSpread1.Sheets(1).ColumnCount = 15
fpSpread1.Sheets(1).GroupBarInfo.Visible = True
fpSpread1.Sheets(1).AllowGroup = True
fpSpread1.Sheets(1).GroupFooterVisible = True
fpSpread1.Sheets(1).ColumnFooter.Visible = True
fpSpread1.Sheets(1).ColumnFooter.RowCount = 2
fpSpread1.Sheets(1).ColumnFooter.Columns(12).HorizontalAlignment = FarPoint.Win.Spread.CellHorizontalAlignment.Left
fpSpread1.Sheets(1).ColumnFooter.Cells(0, 12).RowSpan = 2
'Value
For r = 0 To fpSpread1.Sheets(1).RowCount
    For j = 0 To fpSpread1.Sheets(1).ColumnCount
        fpSpread1.Sheets(1).Models.Data.SetValue(r, j, j + r * fpSpread1.Sheets(1).ColumnCount)
    Next j
Next r

Dim i As Integer
i = 0
fpSpread1.Sheets(0).ColumnFooter.Cells(0, i).Value = "2ndSum"
fpSpread1.Sheets(0).ColumnFooter.Cells(0, 1).Formula = "SUM(Sheet2!A:A)"
See Also
GroupFooterVisible Property
SetAggregationType Method

 

 

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