Enabling and Disabling Cell Editing in DataGrid for MAUI Based on Conditions
Environment
| Version | Product | Author |
|---|---|---|
| 10.0.0 | DataGrid for .NET MAUI | Dobrinka Yordanova |
Description
In scenarios where editing needs to be enabled or disabled for specific cells or rows in a DataGrid, the framework does not provide direct properties to accomplish this at the row level. This knowledge base article demonstrates how to selectively enable or disable cell editing in the DataGrid for MAUI by implementing a custom command. This solution is useful when the editability of a cell depends on certain conditions.
This knowledge base article also answers the following questions:
- How can I disable editing for specific cells in a DataGrid?
- Is it possible to control editing at the cell level in the DataGrid for MAUI?
- How do I implement conditional editing in the DataGrid based on the row data?
Solution
To control the editability of specific cells or rows, create a custom BeginEditCommand and use a property in your data model to determine whether a cell should be editable:
1. Define your RadDataGrid in XAML and set up the columns accordingly. Use the UserEditMode property to enable cell editing and define a custom command for initiating edits.
<telerik:RadDataGrid x:Name="dataGrid" ItemsSource="{Binding Source}" AutoGenerateColumns="False" UserEditMode="Cell">
<telerik:RadDataGrid.Columns>
<telerik:DataGridTextColumn PropertyName="Name" SizeMode="Fixed" CanUserEdit="False"/>
<telerik:DataGridNumericalColumn PropertyName="Value" CanUserEdit="False"/>
<telerik:DataGridBooleanColumn PropertyName="IsEnabled" CanUserEdit="False"/>
<telerik:DataGridDateColumn PropertyName="Date" CellContentFormat="{}{0:MM/dd/yyyy}" CanUserEdit="False"/>
<telerik:DataGridTextColumn PropertyName="Text" />
</telerik:RadDataGrid.Columns>
<telerik:RadDataGrid.Commands>
<local:BeginEditCommand />
</telerik:RadDataGrid.Commands>
...
</telerik:RadDataGrid>
2. Implement the data model class with an IsEnabled property to control the editability.
public class Data : NotifyPropertyChangedBase
{
private bool isEnabled;
public string Value { get; set; }
public bool IsEnabled
{
get { return this.isEnabled; }
set { UpdateValue(ref this.isEnabled, value); }
}
public DateTime Date { get; set; }
public string Text { get; set; }
}
public class ViewModel
{
public List<Data> Source { get; set; } = new List<Data>
{
new Data {Value ="One", IsEnabled=true, Date=new DateTime(2021,12,12), Text="Text 1"},
new Data {Value ="Two", IsEnabled=false, Date=new DateTime(2021,12,13), Text="Text 2"},
...
};
}
BeginEditCommand with custom logic to enable or disable editing based on the IsEnabled property.
public class BeginEditCommand : DataGridCommand
{
public BeginEditCommand()
{
this.Id = DataGridCommandId.BeginEdit;
}
public override bool CanExecute(object parameter)
{
return base.CanExecute(parameter);
}
public override void Execute(object parameter)
{
var context = (EditContext)parameter;
var cellEdit = context.CellInfo as DataGridCellInfo;
if (cellEdit != null && cellEdit.Column is DataGridTextColumn && cellEdit.Column.HeaderText == "Text" && (cellEdit.Item as Data).IsEnabled == true)
{
this.Owner.CommandService.ExecuteDefaultCommand(DataGridCommandId.BeginEdit, parameter);
}
}
}
The provided solution allows for fine-grained control over cell editing in the DataGrid, enabling or disabling editing based on model properties or other conditions.