public void ExpandToLevel(int level, ProgresEvent evprogres)
{
try
{
if (level <= 0)
{
CollapseAll(evprogres);
return;
}
else
{
CollapseAll(evprogres);
}
int rowindex = 0;
while (rowindex < Rows.Count)
{
DataGridViewRow nrow = Rows[rowindex];
if (nrow is TreeGridNode)
{
DataGridViewRow nextnode = null;
if ((rowindex + 1) < Rows.Count)
{
nextnode = Rows[rowindex + 1];
}
TreeGridNode xnode = (TreeGridNode)nrow;
ExpandChilds(xnode, 1, level);
if (evprogres != null)
{
bool docancel = false;
evprogres(rowindex, Rows.Count, ref docancel);
if (docancel)
{
break;
}
}
if (nextnode != null)
{
rowindex = nextnode.Index;
}
else
{
break;
}
}
else
{
rowindex++;
}
}
}
finally
{
if (evprogres != null)
{
bool docancel = false;
evprogres(RowCount, RowCount, ref docancel);
}
}
}
public void ExpandAll(ProgresEvent evprogres)
{
try
{
int rowindex = 0;
SuspendLayout();
int totalcount = 0;
while (rowindex < Rows.Count)
{
DataGridViewRow nrow = Rows[rowindex];
if (nrow is TreeGridNode)
{
DataGridViewRow nextnode = null;
if ((rowindex + 1) < Rows.Count)
{
nextnode = Rows[rowindex + 1];
}
TreeGridNode xnode = (TreeGridNode)nrow;
ExpandChilds(xnode, 1, 999999);
if (evprogres != null)
{
totalcount++;
if ((totalcount % 10) == 0)
{
bool docancel = false;
evprogres(rowindex, Rows.Count, ref docancel);
if (docancel)
{
break;
}
}
}
if (nextnode != null)
{
rowindex = nextnode.Index;
}
else
{
break;
}
}
else
{
rowindex++;
}
}
ResumeLayout(true);
}
finally
{
if (evprogres != null)
{
bool docancel = false;
evprogres(RowCount, RowCount, ref docancel);
}
}
}
public void CollapseAll(ProgresEvent evprogres)
{
try
{
int rowindex = 0;
while (rowindex < Rows.Count)
{
DataGridViewRow nrow = Rows[rowindex];
if (nrow is TreeGridNode)
{
TreeGridNode xnode = (TreeGridNode)nrow;
if (xnode.IsExpanded)
{
xnode.Collapse();
}
CollapseInvisibleChilds(xnode);
rowindex++;
if (evprogres != null)
{
bool docancel = false;
evprogres(rowindex, Rows.Count, ref docancel);
if (docancel)
{
break;
}
}
}
else
{
rowindex++;
}
}
}
finally
{
if (evprogres != null)
{
bool docancel = false;
evprogres(RowCount, RowCount, ref docancel);
}
}
}