Silverlight datagrid disable particular cell

Silverlight datagrid disable particular cell

There must be a validation in silverlight's DataGrid element: if specific value is selected in combo-box, check-box column on the same row (DataGridCheckBoxColumn) must be disabled. However, from what I see, I can disable only the entire column, which is unacceptable.

So, how do I disable a particular cell if I have its coordinates (row, column)?

P.S. Similar question - here doesn't suit for me. There are no CellEnter and CellLeave events in silverlight 4.

Answers & Comments...

Answer: 1

You can do it in two ways. If you know the column number of the check box then you can hide it by specifying it as

Datagrid1.Columns[0].visibility = visibility.Collapsed; 

Otherwise add a cell template for the check box and the other column, on enter the other column you maintain a status enabled as boolean. add a dropdownopened event for the combo box, in the event you can check the condition and make the status as enabled or disabled.

by : Sajeetharanhttp://stackoverflow.com/users/1749403

Answer: 2

A part of the answer may be:

private void DisableCheckboxColumnInRow(DataGridRow row) {     var checkBoxColumn = Datagrid1.Columns[0];     var checkBoxCell = GetCell(checkBoxColumn, row);     checkBoxCell.IsEnabled = false; }  private static DataGridCell GetCell(DataGridColumn column, DataGridRow row) {     var cellContent = column.GetCellContent(row);     return (DataGridCell)cellContent.Parent; } 

But there may me a better way to do this using MVVM:

ViewModel part:

public class TestItem : INotifyPropertyChanged {     private bool _isChecked;     public bool IsChecked     {         get { return _isChecked; }         set         {             _isChecked = value;             OnPropertyChanged("IsChecked");         }     }      private bool _canBeChecked;     public bool CanBeChecked     {         get { return _canBeChecked; }         private set         {             _canBeChecked = value;             OnPropertyChanged("CanBeChecked");         }     }      private string _selectedValue;     public string SelectedValue     {         get { return _selectedValue; }         set         {             _selectedValue = value;             OnPropertyChanged("SelectedValue");             // here we do the 'magic':             CanBeChecked = SelectedValue != "one";         }     }      public IEnumerable<string> PossibleValues     {         get         {             yield return "one";             yield return "two";             yield return "free";         }     }      #region Implementation of INotifyPropertyChanged      public event PropertyChangedEventHandler PropertyChanged;      private void OnPropertyChanged(string propertyName)     {         var handler = PropertyChanged;         if (handler != null)             handler(this, new PropertyChangedEventArgs(propertyName));     }