Changeset 275 for trunk

Timestamp:

05/29/08 18:23:47 (16 years ago)

Author:

gkronber

Message:

fixed #157

File:

• trunk/sources/HeuristicLab.DataAnalysis/DatasetView.cs (modified) (2 diffs)

trunk/sources/HeuristicLab.DataAnalysis/DatasetView.cs

@@ -54 +54 @@
       base.UpdateControls();
       if (Dataset != null) {
+        // DataGridView is bitching around. The columnCount (maybe also rowCount) is changed it creates
+        // new column objects and they have SortMode set to 'automatic'. However this is not allowed if the
+        // selectionmode is set to 'ColumnHeaderSelect' at the same time resulting in an exception.
+        // A solution is to set the SelectionMode to CellSelect before any changes. And after the columns
+        // have been updated (and their SortMode set to 'NotSortable') we switch back to SelectionMode=ColumnHeaderSelect.
+        dataGridView.SelectionMode = DataGridViewSelectionMode.CellSelect;
         int rows = Dataset.Rows;
         int columns = Dataset.Columns;
@@ -67 +73 @@
         }
         for (int i = 0; i < columns; i++) {
-          dataGridView.Columns[i].SortMode = DataGridViewColumnSortMode.NotSortable;
+          dataGridView.Columns[i].SortMode = DataGridViewColumnSortMode.NotSortable; // SortMode has to be NotSortable to allow ColumnHeaderSelect
           dataGridView.Columns[i].Name = GetColumnName(i);
         }
-        //dataGridView.SelectionMode = DataGridViewSelectionMode.ColumnHeaderSelect;
+        dataGridView.SelectionMode = DataGridViewSelectionMode.ColumnHeaderSelect; // switch back to column selection
       } else {
         rowsTextBox.Text = "1";