Set read-only property for cell.

[Anton Samarin]

Hello, 

Can I put the property read-only only for a single cell in a row and not to the entire column?

I want to change this value depending on the remaining cells in row.

Thanks.

[Jordan]

Hi Anton,

You can use GridViewCell PreviewEditStartedEvent to cancel editing of some row and simulate read-only cells.

public partial class Example
{
  public Example()
  {
    this.InitializeComponent();
    this.radGridView.AddHandler(GridViewCell.PreviewEditStartEvent, new EventHandler<CellCancelRoutedEventArgs>(PreviewEditStartEventHandler));
  }

  private void PreviewEditStartEventHandler(object sender, CellCancelRoutedEventArgs e)
  {
    // some custom logic
    e.Cancel = true;
  }
}

Sincerely yours,
Jordan
the Telerik team

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[michael mccurrey]

Is there a way to do this via a DataTrigger via XAML?

[Nedyalko Nikolov]

Hello michael mccurrey,

Generally, IsReadOnly property can be set only on a GridViewDataColumn and RadGridView objects. Since GridViewCell do not have IsReadOnly property you cannot set this via xaml. A possible solution is to use GridViewCell.IsEnabled property in the following way:

<Grid.Resources>
            <Style x:Key="customCellStyle" TargetType="grid:GridViewCell">
                <Style.Triggers>
                    <DataTrigger Binding="{Binding IsReadOnly}" Value="True">
                        <Setter Property="IsEnabled" Value="False" />
                    </DataTrigger>
                </Style.Triggers>
            </Style>
        </Grid.Resources>
        <telerik:RadGridView x:Name="radGridView" AutoGenerateColumns="False">
            <telerik:RadGridView.Columns>
                <telerik:GridViewDataColumn UniqueName="FirstName" CellStyle="{StaticResource customCellStyle}" />
            </telerik:RadGridView.Columns>
        </telerik:RadGridView>

Hope this helps.

Greetings,
Nedyalko Nikolov
the Telerik team

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[Nedyalko Nikolov]

Hello michael mccurrey,

With the 2009.Q3 version and above you can cancel edit for a particular GridViewCell (make cell read-only for the end user) by using RadGridView.BeginningEdit event which replaced GridViewCell.PreviewEditStartEvent with a code similar to following:

void radGridView_BeginningEdit(object sender, GridViewBeginningEditRoutedEventArgs e)
{
   if (e.Cell.Column.UniqueName == "FirstName")
   {
       e.Cancel = true;
   }
}

All the best,
Nedyalko Nikolov
the Telerik team

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[Ganapathi]

Even you can do like this..... 

 

if (!(e.Row is GridViewRow)) return;
var cells = (e.Row as GridViewRow).Cells.OfType<GridViewCell>();
foreach (var cell in cells)
{
    if (cell.Value.ToString().Equals("String"))
    {
         e.Cancel = true;
    }

}