CODEWITHSUNDEEP
c#winformsdatagridview
Paradox
Paradox

Reputation: 129

Sorting on databound gridview is not working

I have a datagridview in my winForm application which is linked to an entity model. This is the code for loading data in datagridview:

var rawData = context.GetType().GetProperty(TableName).GetValue(context, null);
var truncatedData = ((IQueryable<object>)rawData).ToList();
crudBindingSource.DataSource = new BindingSource { DataSource = truncatedData };
dgvLoadTable.DataSource = crudBindingSource;
dgvLoadTable.Refresh();

Now I want to sort the data upon columnHeader click. I tried this:

private void dgvLoadTable_ColumnHeaderMouseClick(object sender, DataGridViewCellMouseEventArgs e)
{
  DataGridViewColumn column = dgvLoadTable.Columns[e.ColumnIndex];
  DataGridViewColumn _sortColumn = null;
  bool isSortAscending = false;
  isSortAscending = (_sortColumn == null || isSortAscending == false);
  string direction = isSortAscending ? "ASC" : "DESC";
  crudBindingSource.DataSource = context.TableName.OrderBy(
  string.Format("it.{0} {1}", column.DataPropertyName, direction)).ToList();

  if (_sortColumn != null) _sortColumn.HeaderCell.SortGlyphDirection = SortOrder.None;
    column.HeaderCell.SortGlyphDirection = isSortAscending ? SortOrder.Ascending : SortOrder.Descending;
   //exception here
  _sortColumn = column;
 }

but, this is throwing exception: Operation can only be performed on cells that belong to a DataGridView control. What should I do?

Upvotes: 0

Views: 1525

Answers (1)

Paradise228
Paradise228

Reputation: 717

Just use the Sort method of your datagridview and you get:

DataGridViewColumn column = dgvLoadTable.Columns[e.ColumnIndex];
ListSortDirection direction = isSortAscending ? ListSortDirection.Ascending : ListSortDirection.Descending;

dgvLoadTable.Sort(column, direction);

Upvotes: 2

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