60000282 How can I zoom/pan without adding these actions to Undo/Redo

Summary

How can I zoom/pan without adding these actions to Undo/Redo list using the .NET components.

Solution

You can use the onUndoStoreValue of the vdDocument event and when the ViewSize or ViewCenter changes (this happens with zoom and/or pan) then set the Cancel to true. Like :
private void Form1_Load(object sender, EventArgs e)
{
vdFramedControl1.BaseControl.ActiveDocument.OnUndoStoreValue += new VectorDraw.Professional.vdObjects.vdDocument.UndoStoreValueEventHandler(ActiveDocument_OnUndoStoreValue);
}
void ActiveDocument_OnUndoStoreValue(object sender, bool isRedo, object propObject, string propName, object value, ref bool Cancel)
{
if (propName.ToLower() == "viewcenter" || propName.ToLower() == "viewsize")
{ // zoom pan change ViewCenter and ViewSize
Cancel = true; // This will not write to the UNDO the pan/zoom actions
}
} For version 7 the code should be:

        void ActiveDocument_OnUndoStoreValue(object sender, bool isRedo, object propObject, string propName, object value, ref bool Cancel)
        {
            if (propName.ToLower() == "viewcenter" || propName.ToLower() == "viewsize" || propObject.ToString().ToLower() == "zoom")
            { // zoom & pan change ViewCenter and ViewSize
                Cancel = true; // This will not write to the UNDO the pan/zoom actions
            }
        }

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