how do I dynamically update the selection of comboxboxcolumn in datagrid?
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21-02-2021 - |
質問
I'm trying to display two columns in a datatable(dt) into a datagrid. And add another column which is a comboxcolumn so that I can assign sectors to each rows. The problem is that the selection of comboboxes cannot be dynamically updated. when I click something else, the selection is gone. Is there any way to fix this?
dg_display.DataContext = dt.DefaultView;
dg_display.Columns[0].Header = "Symbol";
dg_display.Columns[1].Header = "Company name";
DataGridComboBoxColumn columnComboBox = new DataGridComboBoxColumn();
string[] sectorarray = new[]
{
"Consumer Discretionary", "Consumer Staples", "Energy", "Financial",
"Financials", "Health Care", "Industrials", "Information Technology",
"Materials", "Other", "Technology","Telecommunication Services", "Utilities"
};
columnComboBox.ItemsSource = sectorarray;
columnComboBox.IsReadOnly = false;
dg_display.Columns.Add(columnComboBox);
dg_display.Columns[2].Header = "Sector";
解決
You're not binding the SelectedItem
in the ComboBox
Set either SelectedItemBinding
or SelectedValueBinding
他のヒント
you Can try like this....
DataGridComboBoxColumn col = new DataGridComboBoxColumn();
col.Header = "Name";
col.DisplayMemberPath = "Name";
col.SelectedValueBinding = new Binding("Name");
col.ItemsSource = simacc;
col.TextBinding = new Binding("Name");
col.CanUserSort = false;
dataGrid1.Columns.Add(col);
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