Dynamic number of columns bound to a UWP datagrid (Windows Community Toolkit) - mvvm

Question

Has anyone a sample project with a dynamic number of columns bound to a datagrid in UWP? In WPF I can get it to work with an observable collection of dynamic objects with Telerik Datagrid. But in UWP Telerik does not support dynamic objects. I have tried with the Windows Community Toolkit datagrid but failed with it too.

Answer 1

Dynamic number of columns bound to a UWP datagrid (Windows Community Toolkit)
derive from Samed Bejtovic's reply. We could make Dynamic number of columns in code behind with Windows Community Toolkit DataGrid. Before fill the DataGrid, we need convert the collection to DataTable, for example. The following is that load csv file and insert the data to the DataTable.
var dt = new DataTable();
bool firstLine = true;
var sr = new StreamReader("Assets\\Archive.csv");
while (sr.Peek() >= 0)
{
if (firstLine)
{
firstLine = false;
var cols = sr.ReadLine().Split(',');
foreach (string col in cols)
dt.Columns.Add(new DataColumn(col, typeof(string)));
}
else
{
var data = sr.ReadLine().Split(',');
dt.Rows.Add(data);
}
}
Then we call the FillDataGrid(dt,MyDataGrid) that could add the Columns into DataGrid base on above DataTable.
public static void FillDataGrid(DataTable table, DataGrid grid)
{
grid.Columns.Clear();
for (int i = 0; i < table.Columns.Count; i++)
{
grid.Columns.Add(new DataGridTextColumn()
{
Header = table.Columns[i].ColumnName,
Binding = new Binding { Path = new PropertyPath("[" + i.ToString() + "]") }
});
}
var collection = new ObservableCollection<object>();
foreach (DataRow row in table.Rows)
{
collection.Add(row.ItemArray);
}
grid.ItemsSource = collection;
}

Answer 2

DataCollection = new ObservableCollection<dynamic>();
while (reader.Read())
{
string project = reader.GetString(0);
decimal number = reader.GetDecimal(1);
DataCollection.Add(new DataSummary(project, number));
}
Datagrid supports auto generated columns. Set the items source to the collection.
https://www.reddit.com/r/UWP/comments/djzcqj/display_datatable_as_datagrid/?utm_source=share&utm_medium=web2x