GridColumnSummary.FieldName Property
In This Article
Gets or sets the field name of the column for which a summary should be calculated. This is a bindable property.
Namespace: DevExpress.Mobile.DataGrid
Assembly: DevExpress.Mobile.Grid.v18.2.dll
#Declaration
#Property Value
Type | Description |
---|---|
String | A String value that specifies the field name of the column whose values are used for summary calculation. |
#Remarks
Important
This documentation topic describes legacy technology. We no longer develop new functionality for the Grid
#Example
This example shows how to calculate group and total summaries for grid columns using predefined aggregate functions or a custom rule.
The following data summaries are created.
- Group summary to display the maximum value in a Total column for each group of records.
- Total summary to calculate the sum of values by the whole Total column.
- Custom total summary to count the number of rows whose value in the Shipped column is false.
void OnCalculateCustomSummary(object sender, CustomSummaryEventArgs e) {
if (e.FieldName.ToString () == "Shipped")
if (e.IsTotalSummary){
if (e.SummaryProcess == CustomSummaryProcess.Start) {
count = 0;
}
if (e.SummaryProcess == CustomSummaryProcess.Calculate) {
if (!(bool)e.FieldValue)
count++;
e.TotalValue = count;
}
}
}
See Also