Changeset 7731

Timestamp:

04/16/12 16:38:05 (13 years ago)

Author:

sforsten

Message:

#1818: The previous solution didn't work out.
Similar to the StringConvertibleMatrixView the ColumnGroupView now only updates the row headers which are displayed.

File:

• branches/HeuristicLab.DataImporter/HeuristicLab.DataImporter.Data/View/ColumnGroupView.cs (modified) (4 diffs)

branches/HeuristicLab.DataImporter/HeuristicLab.DataImporter.Data/View/ColumnGroupView.cs

@@ -58 +58 @@
       this.dataGridView.RowHeadersWidthChanged += new EventHandler(dataGridView_RowHeadersWidthChanged);
       this.dataGridView.CellMouseEnter += new DataGridViewCellEventHandler(dataGridView_CellMouseEnter);
-      this.dataGridView.CellFormatting += new DataGridViewCellFormattingEventHandler(dataGridView_CellFormatting);
+      this.dataGridView.Scroll += new ScrollEventHandler(dataGridView_Scroll);
+      this.dataGridView.Resize += new EventHandler(dataGridView_Resize);
 
       //delegates for virtual mode
@@ -296 +297 @@
       }
 
+      UpdateDataGridViewHeaderCells();
       this.dataGridView.AutoResizeColumns(DataGridViewAutoSizeColumnsMode.DisplayedCells);
       this.dataGridView.AutoResizeRowHeadersWidth(DataGridViewRowHeadersWidthSizeMode.AutoSizeToDisplayedHeaders);
@@ -311 +313 @@
       this.dataGridView.Invalidate();
       UpdateStateInformation();
+    }
+
+    private void UpdateDataGridViewHeaderCells() {
+      int index = dataGridView.FirstDisplayedScrollingRowIndex;
+      if (index == -1) index = 0;
+      int updatedRows = 0;
+      int count = dataGridView.DisplayedRowCount(true);
+
+      while (updatedRows < count) {
+        dataGridView.Rows[index].HeaderCell.Value = (index + 1).ToString();
+        if (dataGridView.Rows[index].Visible)
+          updatedRows++;
+        index++;
+      }
     }
 
@@ -469 +485 @@
     }
 
-    private void dataGridView_CellFormatting(object sender, DataGridViewCellFormattingEventArgs e) {
-      this.dataGridView.Rows[e.RowIndex].HeaderCell.Value = e.RowIndex.ToString();
+    private void dataGridView_Resize(object sender, EventArgs e) {
+      UpdateDataGridViewHeaderCells();
+    }
+
+    private void dataGridView_Scroll(object sender, ScrollEventArgs e) {
+      if (e.ScrollOrientation == ScrollOrientation.VerticalScroll)
+        UpdateDataGridViewHeaderCells();
     }