Hi,

The Drag & Drop sample is not really that complex. Here is some brief description on how it works:

The Page Structure
The sample contains two diagrams - the left one (named diagram) is the drag & drop source and the right one (named ddtarget) is the drag & drop target. On top of the two diagrams there is an invisible Canvas (named ddplane), which holds a Rectangle (named test). This rectangle is only displayed during dragging and is used to visually represent the dragged node.

The Drag&Drop Logic
1. The left diagram handles the MouseLeftButtonDown event. When this event occurs, the sample checks if the mouse is positioned over the blue rectangle in the top left corner of a node. If this condition is satisfied, the rectangle test is made visible and the sample enters dragging mode.

2. The left diagram also handles the MouseMove event, which is only used during dragging to update the position of the test rectangle in order to give the impression that the node is being dragged.

3. Finally, the left diagram handles the MouseLeftButtonUp event. When this event occurs during dragging and the mouse is positioned over the right diagram ddtarget, a new node is created in this diagram at the mouse position, which is effectively the drop action.

I hope this clarifies things a little.

Regards,
Meppy

Check this sample:

https://mindfusion.eu/_samples/_sample_DragDrop3.zip

It implements dragging of any shape.

Regards,
Meppy

hey i found solution,how to do that,
i commented

//if (hits.Contains(test))
// hits.Remove(test);

line of code where you are removing.

Thanks for your kind support.

In the MainPage constructor replace:

if (x > 300)... 

with:

int shapesPerRow = 3;
if (x > (shapesPerRow - 1) * (size + 5))... 

Regards,
Meppy