How to update ETO gridview content

Hi all,

Can someone give me a hint how to update only the content in the eto gridview.
If i use

        mod = forms.BindingUpdateMode.Source
        forms.GridView.UpdateBindings(self.grid,mod)

the whole gridview will be updated not only the content.

The code is.

import Eto.Forms as forms
import Eto.Drawing as drawing
import Rhino.UI
import ghpythonlib.treehelpers as th

if Execute:
class TestDialog(forms.Form):
def init(self):
self.Title = “Cell Colors”
self.Size = drawing.Size(300,500)
self.Resizable =True
self.Topmost = True
self.grid = forms.GridView()

        for i in range(0,Table.BranchCount):
            Branch= forms.GridColumn()
            Branch.DataCell = forms.TextBoxCell(i)
            
            col = forms.GridColumn()
            col.HeaderText = Header[i]
            col.DataCell = forms.TextBoxCell(i)
            self.grid.Columns.Add(col)
            
        
        self.grid.DataStore = zip(*[list(i) for i in Table.Branches])
        
        
        layout = forms.DynamicLayout()
        layout.AddRow(self.grid)
        self.Content = layout
        


def main():
    dialog = TestDialog()
    dialog.Show()

if __name__ == "__main__":
    main()

And the window looks like this