Custom cell editor | Infragistics Forums

Custom cell editor

Paulo posted over 16 years ago

Hello, I have a grid that has each cell value represented by DataCell class: class DataCell { string DataValue { get; set; } Type DataType { get; } override ToString() { return DataValue; } } That is UltraGridCell.Value has DataCell object set to it. There is no way to change this. There is a requirement that each cell that represents bool type should be represented by a check box cell. As I understood the easiest way to achieve this is to write my own EmbeddableEditorBase (lets say MyEditor), that will delegate most of its functions to CheckEditor (CheckEditor will be encapsulated within MyEditor). The only thing it should do differently is to fetch/commit values from/to the underlying data - string representation of bool instead of bool intself. Does it look like something that can be easily achieved? I'm new to editors, so any help will be appreciated. Thanks, Paulo

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Matt Snyder posted over 16 years ago

Paulo,
If you just need to show a checkbox to edit a value, you could use a CheckBox style and then use a DataFilter to commit the values as a string type. There is actually a KB article for doing exactly this:
HOWTO:Use a WinGrid DataFilter to convert strings to bools (and vice-versa) for a checkbox column
-Matt
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Paulo posted over 16 years ago in reply to Matt Snyder

Matt,
First, thanks for your response.
It looks like it's not possible to set the CheckBox style for the column that has its DataType property set to other than bool type (DataCell - in my case). Am I missing something?
I tried to solve the issue from the opposite perspective: I made DataCell to be IConvertible and set the DataType of the column to be bool. But in order to complete cell value committing I have to set the DataCell.Value property with the new value. But the DataCell is not longer associated with the UltraGridCell that is being committed (the UltraGridCell.Value property value is pure bool).
Any help?
Thanks,
Paulo
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Vitaly posted over 15 years ago in reply to Mike Saltzman

Paulo,
You should write your own DataFilter and call this code:
CheckEditor editor = new CheckEditor();
editor.DataFilter = myFilter;
column.Editor = editor;

- Vitaly
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Offline Mike Saltzman posted over 15 years ago in reply to Paulo

Hi Paulo,
If you use the code from the KB article which uses a DataFilter and assigns an editor to the cell, then you don't need to set the Style property on the column and it will give you the behavior you need.
You will need to change a few things from the sample code, of course, since it uses strings. If the sample is setting the ExpectedType property anywhere, make sure you set it to the correct DataType of the column instead of string.
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