// 复制或者剪切ListView中选定的事项到Clipboard
// parameters:
// bCut 是否为剪切
public static void CopyLinesToClipboard(
Form form,
string strFormat,
ListView list,
bool bCut)
{
Cursor oldCursor = form.Cursor;
form.Cursor = Cursors.WaitCursor;
MemLineCollection mem_lines = new MemLineCollection();
mem_lines.Format = strFormat;
List <int> indices = new List <int>();
string strTotal = "";
for (int i = 0; i < list.SelectedIndices.Count; i++)
{
int index = list.SelectedIndices[i];
ListViewItem item = list.Items[index];
string strLine = Global.BuildLine(item);
strTotal += strLine + "\r\n";
MemLine mem_line = new MemLine();
mem_line.Item = item;
mem_line.Tag = item.Tag;
mem_lines.Add(mem_line);
if (bCut == true)
{
indices.Add(index);
}
}
// Clipboard.SetDataObject(strTotal, true);
DataObject obj = new DataObject();
obj.SetData(typeof(MemLineCollection), mem_lines);
obj.SetData(strTotal);
Clipboard.SetDataObject(obj, true);
if (bCut == true)
{
for (int i = indices.Count - 1; i >= 0; i--)
{
int index = indices[i];
list.Items.RemoveAt(index);
}
}
form.Cursor = oldCursor;
}
// 从剪贴板中Paste行插入到ListView中当前选定的位置
// parameters:
// bInsertBefore 是否前插? 如果==true前插，否则后插
public static void PasteLinesFromClipboard(Form form,
string strFormatList,
ListView list,
bool bInsertBefore)
{
IDataObject ido = Clipboard.GetDataObject();
if (ido.GetDataPresent(DataFormats.UnicodeText) == false &&
ido.GetDataPresent(typeof(MemLineCollection)) == false)
{
MessageBox.Show(form, "剪贴板中没有内容");
return;
}
// 优先使用专用格式
if (ido.GetDataPresent(typeof(MemLineCollection)) == true)
{
MemLineCollection mem_lines = (MemLineCollection)ido.GetData(typeof(MemLineCollection));
if (StringUtil.IsInList(mem_lines.Format, strFormatList) == false)
{
MessageBox.Show(form, "剪贴板中的内容格式不符合当前窗口要求，无法粘贴");
return;
}
int index = -1;
if (list.SelectedIndices.Count > 0)
{
index = list.SelectedIndices[0];
}
Cursor oldCursor = form.Cursor;
form.Cursor = Cursors.WaitCursor;
list.SelectedItems.Clear();
foreach (MemLine line in mem_lines)
{
/*
* ListViewItem item = Global.BuildListViewItem(
* list,
* line.Line);
* item.Tag = line.Tag;
* */
line.Item.Tag = line.Tag;
if (index == -1)
{
list.Items.Add(line.Item);
}
else
{
if (bInsertBefore == true)
{
list.Items.Insert(index, line.Item);
}
else
{
list.Items.Insert(index + 1, line.Item);
}
index++;
}
line.Item.Selected = true;
}
form.Cursor = oldCursor;
return;
}
if (ido.GetDataPresent(DataFormats.UnicodeText) == true)
{
string strWhole = (string)ido.GetData(DataFormats.UnicodeText);
int index = -1;
if (list.SelectedIndices.Count > 0)
{
index = list.SelectedIndices[0];
}
Cursor oldCursor = form.Cursor;
form.Cursor = Cursors.WaitCursor;
list.SelectedItems.Clear();
string[] lines = strWhole.Split(new string[] { "\r\n" }, StringSplitOptions.RemoveEmptyEntries);
for (int i = 0; i < lines.Length; i++)
{
ListViewItem item = Global.BuildListViewItem(
list,
lines[i]);
if (index == -1)
{
list.Items.Add(item);
}
else
{
if (bInsertBefore == true)
{
list.Items.Insert(index, item);
}
else
{
list.Items.Insert(index + 1, item);
}
index++;
}
item.Selected = true;
}
form.Cursor = oldCursor;
}
}