Hi,

I have created custom property and bind it to xtragrid.column. Error provider for this property doesnt be shown when I save data. It works for other property (mapped to data)

Any ideas?

Thank you

Here's the code for the IDataErrorInfo.Item get:

                '-- Return the error for the given field
                If Me.BrokenRules.Contains(Me.CurrentRowIndex, columnName) Then
                    Return Me.BrokenRules(Me.CurrentRowIndex, columnName).Description
                ElseIf Me.CurrentDataTable.Columns.Contains(columnName) Then
                    Return Me.CurrentRow.GetColumnError(columnName)
                Else
                    Return String.Empty
                End If

So, if the BrokenRules collection has an entry for the current row and "ItemCode", then it will return the description in the broken rule.  Otherwise, it checks the underlying DataTable for errors, then just returns an empty string.  Since your custom field does not exist as a column, the second condition will never be hit, so you have to verify that the broken rule is being added properly.

You can use the ToArray() method on the BrokenRules to see all of the rules in the collection and make sure that you're rule is in there for the "ItemCode" property.

Hi,

How could I make control response to IDataErrorInfo for custom field?



Thank you

It will work if your custom field has a field within the DataTable in the BO.  If you have a custom property that does not pull from the internal data table of the BO then it will not return an error.  The same applies for the broken rule.  So at present, without having another object, you would have to add the field to the SELECT or manually to the data table using the Columns collection of the CurrentDatatable.  Once the field exists, then you can just add a broken rule: