CellEditContext.OnChanged(String, Object) Method
A delegate method that handles a cell value change in the specified column.
Namespace: DevExpress.Blazor
Assembly: DevExpress.Blazor.v20.2.dll
NuGet Package: DevExpress.Blazor
Declaration
public void OnChanged(
string fieldName,
object value
)
Parameters
Name | Type | Description |
---|---|---|
fieldName | String | A data source field name. |
value | Object | A cell value. |
Remarks
When you use an edit template, the grid does not know what you have changed in editors inside this template. Call the OnChanged method when you change a cell value in a custom editor to inform the grid about the change and save a new cell value to the EditedValues collection. Then, this collection is passed to the RowUpdating and RowInserting events.
<DxDataGrid Data="@DataSource"
RowInserting="@((newValues) => OnRowInserting(newValues))"
RowUpdating="@((updatingDataItem, newValues) => OnRowUpdating(updatingDataItem, newValues))">
...
<DxDataGridComboBoxColumn Field="@nameof(Vacancy.Region)" Data="@VacancyRepository.Regions">
<EditTemplate>
@{
var editingContext = (CellEditContext)context;
}
<DxComboBox Data="@VacancyRepository.Regions"
Value="@region"
ValueChanged="@((string newCellValue) => {
editingContext.OnChanged(newCellValue);
editingContext.OnChanged(nameof(Vacancy.City), null);
})">
</DxComboBox>
</EditTemplate>
</DxDataGridComboBoxColumn>
</DxDataGrid>
Online Demo
See Also