/// <summary>
/// 填充Tree
/// </summary>
/// <param name="ParentID">父级编号</param>
/// <param name="dt">格式，三列，Id,Name,ParentId,只要顺序一样就可以了</param>
public void Fill(DataTable dt, object ParentID)
{
DropDownControl.Size = new Size(200, 300);
DataTable temptbl = dt.Copy();
DataView viewinfo = new DataView(temptbl);
viewinfo.RowFilter = temptbl.Columns[2].ColumnName + " = " + ParentID;
DropDownTree tree = DropDownControl;
//DropDownNode root = new DropDownNode(-1, "==请选择==");
//tree.Nodes.Clear();
//tree.Nodes.Add(root);
if (viewinfo.Count > 0)
{
foreach (DataRowView drv in viewinfo)
{
DropDownNode node = new DropDownNode(Convert.ToInt32(drv[0]), drv[1].ToString());
tree.Nodes.Add(node);
ComboBoxTreeTree(node, drv[0], drv, dt);
}
}
if (tree.Nodes.Count > 0)
{
tree.Nodes[0].Expand();
SelectedByValue(viewinfo[0][0], viewinfo[0][1]);
}
//cbxTree.SelectedByValue(1, "==请选择==");
}
private void ComboBoxTreeTree(DropDownNode ParentNode, object ParentID, DataRowView ParentDV, DataTable dt)
{
DataTable temptbl = dt.Copy();
DataView viewinfo = new DataView(temptbl);
viewinfo.RowFilter = temptbl.Columns[2].ColumnName + " = " + ParentID;
foreach (DataRowView drv in viewinfo)
{
DropDownNode node2 = new DropDownNode(Convert.ToInt32(drv[0]), drv[1].ToString());
ParentNode.Nodes.Add(node2);
ComboBoxTreeTree(node2, drv[0], drv, dt);
}
}
private TreeNode SearchNode(TreeNodeCollection Nodes, DropDownNode SearchFor)
{
if (SearchFor != null)
{
foreach (DropDownNode node in Nodes)
{
if (node.Id == SearchFor.Id)
{
return(node);
}
else
{
TreeNode found = SearchNode(node.Nodes, SearchFor);
if (found != null)
{
return(found);
}
}
}
}
return(null);
}
/// <summary>
/// 根据值来查找
/// </summary>
/// <param name="value">值</param>
/// <param name="text">Text可以随便写,当然，最好是什么就写什么</param>
public void SelectedByValue(object value, object text)
{
DropDownNodeValue = new DropDownNode(Convert.ToInt32(value), text.ToString());
}