CalculationBindingBase.Source Property

Gets or sets a data binding object that provides the data to calculate.

Namespace: DevExpress.PivotGrid.DataBinding

Assembly: DevExpress.PivotGrid.v23.2.Core.dll

NuGet Packages: DevExpress.PivotGrid.Core, DevExpress.Win.Navigation

Declaration

C#

[DefaultValue(null)]
public DataBindingBase Source { get; set; }

VB.NET

<DefaultValue(Nothing)>
Public Property Source As DataBindingBase

Property Value

Type	Default	Description
DataBindingBase	null	A DataBindingBase descendant that provides the source data.

Remarks

A Source can be a DataSourceColumnBindingBase descendant that retrieves data from a data source or any other DataBindingBase descendant that provides calculated data.

Run Demo: Field Calculation Bindings

The following example shows how to create the RunningTotalBinding calculation binding. The Pivot Grid binds the fieldProductAmountRunningTotal field to the result of the running total calculation.

1. Create an instance of the RunningTotalBinding class with the Source property set to the DataBindingBase descendant’s instance.
2. Specify the window frame and summary type.
3. Assign the RunningTotalBinding instance to the PivotGridField.DataBinding property.

C#

pivotGridControl.OptionsData.DataProcessingEngine = PivotDataProcessingEngine.Optimized;

PivotGridField fieldProductAmount = new PivotGridField() {
    Area = PivotArea.DataArea,
    Caption = "Product Sales",
    Name = "fProductAmount"
};

PivotGridField fieldProductAmountRunningTotal = new PivotGridField {
    Area = PivotArea.DataArea,
    Caption = "Running Total",
    Name = "fRunningTotal"
};

DataSourceColumnBinding productAmountBinding = new DataSourceColumnBinding("ProductAmount");
//Bind a field to a column in the data source.
fieldProductAmount.DataBinding = productAmountBinding;
//Calculate a running summary on the column.
fieldProductAmountRunningTotal.DataBinding = new RunningTotalBinding() {
    Source = productAmountBinding,
    PartitioningCriteria = CalculationPartitioningCriteria.ColumnValue,
    SummaryType = PivotSummaryType.Sum
};

pivotGridControl.Fields.AddRange(new PivotGridField[] {
    fieldProductAmount,
    fieldProductAmountRunningTotal,
});

VB.NET

pivotGridControl.OptionsData.DataProcessingEngine = PivotDataProcessingEngine.Optimized

Dim fieldProductAmount As New PivotGridField()
fieldProductAmount.Area = PivotArea.DataArea
fieldProductAmount.Caption = "Product Sales"
fieldProductAmount.Name = "fProductAmount"

Dim fieldProductAmountRunningTotal As New PivotGridField()
fieldProductAmountRunningTotal.Area = PivotArea.DataArea
fieldProductAmountRunningTotal.Caption = "Running Total"
fieldProductAmountRunningTotal.Name = "fRunningTotal"

Dim productAmountBinding As New DataSourceColumnBinding("ProductAmount")
'Bind a field to a column in the data source.
fieldProductAmount.DataBinding = productAmountBinding
'Calculate a running summary on the column.
Dim runningTotalBinding As New RunningTotalBinding()
runningTotalBinding.Source = productAmountBinding
runningTotalBinding.PartitioningCriteria = CalculationPartitioningCriteria.ColumnValue
runningTotalBinding.SummaryType = PivotSummaryType.Sum
fieldProductAmountRunningTotal.DataBinding = runningTotalBinding

pivotGridControl.Fields.AddRange(New PivotGridField() { fieldProductAmount, fieldProductAmountRunningTotal})