Thank you for your answer!
Actually still I need your support as I tried your solution as clarified in the below screenshots but all of the column are still enabled for editing, also kindly know that I am binding the columns dynamically in the code, so there are no columns specified in the aspx, and after that I am changing the read only to be true for a specific column as shown in the below screenshot but the column still editable.

The visual basic code:

The aspx:

I appreciate your support !

Hello,

Thank you for the provided screenshots!

By default all columns' readOnly property is set to False. In order to prevent column editing you need to set it to True and add all columns which property is modified to the ColumnSettings collection. Also since the behavior is enabled through the markup file you need to specify that the settings are related to the columns of the parent grid via the GridView property as follows:

    Dim firstCol As EditingColumnSetting = New EditingColumnSetting()
    firstCol.ColumnKey = "Desc"
    firstCol.[ReadOnly] = False
 
    Dim secondCol As EditingColumnSetting = New EditingColumnSetting()
    secondCol.ColumnKey = "Price"
    secondCol.[ReadOnly] = True
 
    Dim thirdCol As EditingColumnSetting = New EditingColumnSetting()
    thirdCol.ColumnKey = "Status"
    thirdCol.[ReadOnly] = True
 
    Me.WebHierarchicalDataGrid1.GridView.Behaviors.EditingCore.Behaviors.CellEditing.ColumnSettings.Add(firstCol)
    Me.WebHierarchicalDataGrid1.GridView.Behaviors.EditingCore.Behaviors.CellEditing.ColumnSettings.Add(secondCol)
    Me.WebHierarchicalDataGrid1.GridView.Behaviors.EditingCore.Behaviors.CellEditing.ColumnSettings.Add(thirdCol)

Let me know if I may be of any further assistance.

Sincerely,
Teodosia Hristodorova
Software Developer

That's works with me, Thank you!

Just I need your to ask another question, I need to make a specific cells read only in an editable column as shown below, I have the editable columns Amount and Rate however I need to make the marked cells read only.

Hello,

In order to prevent editing of certain cells in an editable column, my suggestion is to handle the cell editing enter event as follows:

 <Behaviors>
                    <ig:EditingCore>
                        <Behaviors>
                            <ig:CellEditing CellEditingClientEvents-EnteringEditMode="enteringEdit">
                              <ColumnSettings></ColumnSettings>
                            </ig:CellEditing>
                        </Behaviors>
                    </ig:EditingCore>
                </Behaviors>

In the event handler, you can access the cell and depending on your scenario to prevent entering edit mode by canceling the event:

 <script>
        function enteringEdit(sender, args) {
            var cell = args.getCell();
            var row = cell.get_row();
            var col = cell.get_column();
            if (col.get_index() === 1 && row.get_index() === 0) {
                args.set_cancel(true);
            }
          
        }
    </script>
</body>

Let me know if I may be of any further assistance.

Sincerely,
Teodosia Hristodorova
Software Developer

Is there another way to make it from visual basic code instead if JavaScript?

Also, the below behavior that you added in the aspx we added it as per your solution from the visual basic code, so we add the CellEditingClientEvents in the visual basic side?

<Behaviors>
<ig:EditingCore>
<Behaviors>
<ig:CellEditing CellEditingClientEvents-EnteringEditMode="enteringEdit">
<ColumnSettings></ColumnSettings>
</ig:CellEditing>
</Behaviors>
</ig:EditingCore>
</Behaviors>

Hello,

In order to be able to handle some action in code behind this action should cause a postback which would refresh the grid. However, there isn't a postback on editing because this will automatically exit edit mode.  Having this in mind, what I could say is that the cell editing events could be handled and canceled only on client-side.

Let me know if I may be of any further assistance.

Sincerely,
Teodosia Hristodorova
Software Developer

Thank you, That's work!
I have another question please, when I change some of the cells I need to press a button to save the changes, but I am not able to get the changes, I still got the old values before the changes done in the grid.

Hello,

Please note that according to our policy we handle a single issue per case, and since the initial theme is regarding conditionally setting columns as read-only or editable, my suggestion is to create another thread with your new question about saving the changes. This is for better consistency and history tracking.

If you require any further assistance on the matter, please let me know.

Sincerely,
Teodosia Hristodorova
Software Developer