public ColumnHeaderEx(string text)
{
this.AutoResize(ColumnHeaderAutoResizeStyle.HeaderSize);
ColumnState state = new ColumnState("string", false);
this.Tag = state;
this.ImageIndex = -1;
this.Text = text;
}
public ColumnHeaderEx(string text)
{
this.AutoResize(ColumnHeaderAutoResizeStyle.HeaderSize);
ColumnState state = new ColumnState("string", false);
this.Tag = state;
this.ImageIndex = -1;
this.Text = text;
}
protected override void OnColumnClick(ColumnClickEventArgs e)
{
base.OnColumnClick(e);
//set the images on the column headers to none
if (this.SmallImageList != null)
{
foreach (ColumnHeader ch in this.Columns)
{
ch.ImageIndex = -1;
}
}
//prepare for sorting the columns
ListViewItemComparer comparer = new ListViewItemComparer(e.Column);
ColumnState state = this.Columns[e.Column].Tag as ColumnState;
if (state != null)
{
if (state.type == "number")
{
comparer.Numeric = true;
}
else if (state.type == "date")
{
comparer.Date = true;
}
state.descending = !state.descending; //toggle state from acsending to desending and vice versa on very click
ColumnHeader column = this.Columns[e.Column];
if (this.SmallImageList != null)
{
if (state.descending)
{
column.ImageIndex = 0;
}
else
{
column.ImageIndex = 1;
}
}
comparer.Descending = state.descending;
}
this.ListViewItemSorter = comparer;
this.Sort();
//set the colors.
this.BeginUpdate();
Color c = Color.FromArgb(247, 247, 247);
//change the column color
int idx = 0;
foreach (ListViewItem lvi in this.Items)
{
if (previousColumn != -1)
{
lvi.SubItems[previousColumn].ResetStyle();
}
//paint alternate rows
if ((idx & 1) == 0) //if even
{
lvi.BackColor = c;
//Paint subitems
foreach (ListViewItem.ListViewSubItem lvsi in lvi.SubItems)
{
lvsi.BackColor = c;
}
}
else //if odd
{
lvi.BackColor = this.BackColor;
foreach (ListViewItem.ListViewSubItem lvsi in lvi.SubItems)
{
lvsi.BackColor = this.BackColor;
}
}
lvi.SubItems[e.Column].BackColor = c;
idx++;
}
previousColumn = e.Column;
this.EndUpdate();
}
