private void treeViewObjects_DragDrop(object sender, DragEventArgs e)
{
//A dummy node variable used for various things
UltraTreeNode aNode;
//The SelectedNodes which will be dropped
SelectedNodesCollection SelectedNodes;
//The Node to Drop On
UltraTreeNode DropNode;
//An integer used for loops
int i;
//Set the DropNode
DropNode = UltraTree_DropHightLight_DrawFilter.DropHightLightNode;
//Get the Data and put it into a SelectedNodes collection,
//then clone it and work with the clone
//These are the nodes that are being dragged and dropped
SelectedNodes = (SelectedNodesCollection)e.Data.GetData(typeof(SelectedNodesCollection));
SelectedNodes = SelectedNodes.Clone() as SelectedNodesCollection;
//Sort the selected nodes into their visible position.
//This is done so that they stay in the same order when
//they are repositioned.
SelectedNodes.SortByPosition();
//Determine where we are dropping based on the current
//DropLinePosition of the DrawFilter
switch (UltraTree_DropHightLight_DrawFilter.DropLinePosition)
{
case DropLinePositionEnum.OnNode: //Drop ON the node
{
//Loop through the SelectedNodes and reposition
//them to the node that was dropped on.
//Note that the DrawFilter keeps track of what
//node the mouse is over, so we can just use
//DropHighLightNode as the drop target.
for (i = 0; i <= (SelectedNodes.Count - 1); i++)
{
try
{
aNode = SelectedNodes[i];
var newParentTagName = Convert.ToString(DropNode.Tag);
var oldParentTagName = Convert.ToString(aNode.Parent.Tag);
var oldParentCategoryId = Convert.ToInt32(GetKey(aNode.Parent.Key));
var newParentCategoryId = Convert.ToInt32(GetKey(DropNode.Key));
var nodeTagName = Convert.ToString(aNode.Tag);
if (string.IsNullOrEmpty(newParentTagName) || string.IsNullOrEmpty(oldParentTagName))
{
continue;
}
if (nodeTagName == "group")
{
var data = new Category.Data();
data.CategoryId = Convert.ToInt32(GetKey(aNode.Key));
data.ParentCategoryId = newParentCategoryId;
data.Name = aNode.Text.Split(new char[] { '(' })[0];
data.ConnectionId = ConnectionId;
Category.Update(data);
}
else
{
if (newParentTagName == "root")
{
continue;
}
List <string> lstRootTags = new List <string>()
{
"tables", "procs", "views", "functions"
};
var isUpdate = false; var isInsert = false; var isDelete = false;
if (newParentTagName == "group" && oldParentTagName == "group")
{
isUpdate = true;
}
else if (newParentTagName == "group" && lstRootTags.Contains(oldParentTagName))
{
if (nodeTagName + "s" != oldParentTagName)
{
isUpdate = true;
}
else
{
isInsert = true;
}
}
else if (oldParentTagName == "group" && lstRootTags.Contains(newParentTagName))
{
if (nodeTagName + "s" != newParentTagName)
{
isUpdate = true;
}
else
{
isDelete = true;
}
}
else if (lstRootTags.Contains(newParentTagName) && lstRootTags.Contains(oldParentTagName))
{
if (nodeTagName + "s" != newParentTagName && nodeTagName + "s" != oldParentTagName)
{
isUpdate = true;
}
else if (nodeTagName + "s" == oldParentTagName && nodeTagName + "s" != newParentTagName)
{
isInsert = true;
}
else if (nodeTagName + "s" == newParentTagName && nodeTagName + "s" != oldParentTagName)
{
isDelete = true;
}
}
var data = new CategoryItem.Data();
data.CategoryId = newParentCategoryId;
data.ItemType = nodeTagName;
data.Name = aNode.Text.Split(new char[] { '(' })[0];
data.Status = "new";
if (isInsert)
{
data.CreatedDate = DateTime.Now;
var categoryItemId = CategoryItem.Create(data, ApplicationConnectionString);
aNode.Key = Convert.ToString(categoryItemId) + "$$" + aNode.Tag;
}
else if (isUpdate)
{
data.CategoryItemId = Convert.ToInt32(GetKey(aNode.Key));
CategoryItem.Update(data);
}
else if (isDelete)
{
data.CategoryItemId = Convert.ToInt32(GetKey(aNode.Key));
CategoryItem.Delete(data);
}
}
//MessageBox.Show("aNode: " + aNode.Text);
//MessageBox.Show("Drop Node: " + DropNode.Text);
aNode.Reposition(DropNode.Nodes);
}
catch { }
}
break;
}
}
//After the drop is complete, erase the current drop
//highlight.
UltraTree_DropHightLight_DrawFilter.ClearDropHighlight();
}
