public int Compare(object x, object y) { // Cast the objects to be compared to ListViewItem objects ListViewItem listviewX = (ListViewItem)x; ListViewItem listviewY = (ListViewItem)y; if (listviewX.Checked && !listviewY.Checked) { return(-1); } else if (listviewX.Checked.Equals(listviewY.Checked)) { if (listviewX.ImageIndex < listviewY.ImageIndex) { return(-1); } else if (listviewX.ImageIndex == listviewY.ImageIndex) { return(ObjectCompare.Compare(listviewX.Text.Trim(), listviewY.Text.Trim())); } else { return(1); } } else { return(1); } }
public int Compare(object x, object y) { //int compareResult; int image1, image2; ListViewItem listviewX, listviewY; // Cast the objects to be compared to ListViewItem objects listviewX = (ListViewItem)x; image1 = listviewX.ImageIndex; listviewY = (ListViewItem)y; image2 = listviewY.ImageIndex; if (image1 < image2) { return(-1); } else if (image1 == image2) { return(_objectCompare.Compare(listviewX.Text.Trim(), listviewY.Text.Trim())); } else { return(1); } }
/// <summary> /// This method is inherited from the IComparer interface. It compares the two objects passed using a case insensitive comparison. /// </summary> /// <param name="x">First object to be compared</param> /// <param name="y">Second object to be compared</param> /// <returns>The result of the comparison. "0" if equal, negative if 'x' is less than 'y' and positive if 'x' is greater than 'y'</returns> public int Compare(object x, object y) { int compareResult = 0; ListViewItem listviewX, listviewY; // Cast the objects to be compared to ListViewItem objects listviewX = (ListViewItem)x; listviewY = (ListViewItem)y; ListView listViewMain = listviewX.ListView; // Calculate correct return value based on object comparison if (listViewMain.Sorting != SortOrder.Ascending && listViewMain.Sorting != SortOrder.Descending) { // Return '0' to indicate they are equal return(compareResult); } if (_sortModifier.Equals(ESortModifiers.SortByText) || _sortModifier.Equals(ESortModifiers.SortByTagOrText) || _columnToSort > 0) { // Compare the two items if (listviewX.SubItems.Count <= _columnToSort && listviewY.SubItems.Count <= _columnToSort) { compareResult = _objectCompare.Compare(null, null); } else if (listviewX.SubItems.Count <= _columnToSort && listviewY.SubItems.Count > _columnToSort) { compareResult = _objectCompare.Compare(null, listviewY.SubItems[_columnToSort].Text.Trim()); } else if (listviewX.SubItems.Count > _columnToSort && listviewY.SubItems.Count <= _columnToSort) { compareResult = _objectCompare.Compare(listviewX.SubItems[_columnToSort].Text.Trim(), null); } else { if (listviewX.SubItems[_columnToSort].Tag != null && listviewX.SubItems[_columnToSort].Tag is IComparable && listviewY.SubItems[_columnToSort].Tag != null && listviewY.SubItems[_columnToSort].Tag is IComparable) { compareResult = _objectCompare.Compare( listviewX.SubItems[_columnToSort].Tag, listviewY.SubItems[_columnToSort].Tag); } else { compareResult = _objectCompare.Compare( listviewX.SubItems[_columnToSort].Text.Trim(), listviewY.SubItems[_columnToSort].Text.Trim()); } } } else { switch (_sortModifier) { case ESortModifiers.SortByCheckbox: compareResult = _firstObjectCompare2.Compare(x, y); break; case ESortModifiers.SortByImage: compareResult = _firstObjectCompare.Compare(x, y); break; default: //if (mySortModifier.Equals (ESortModifiers.SortByTagOrText)) compareResult = _firstObjectCompare.Compare(x, y); break; } } // Calculate correct return value based on object comparison if (_orderOfSort == SortOrder.Ascending) { // Ascending sort is selected, return normal result of compare operation return(compareResult); } else if (_orderOfSort == SortOrder.Descending) { // Descending sort is selected, return negative result of compare operation return(-compareResult); } else { // Return '0' to indicate they are equal return(0); } }