/// <summary>
/// 删除树节点（下级树接驳上来）
/// </summary>
/// <typeparam name="T"></typeparam>
/// <typeparam name="TPk"></typeparam>
public static List <T> DeleteNodes <T, TPk>(DeleteNodeParam <T, TPk> param) where T : class
{
if (param.TreeLists == null || param.TreeLists.Count == 0 || param.RemoveIds == null || param.RemoveIds.Count == 0)
{
return(param.TreeLists);
}
if (param.IdField == null)
{
throw new Exception("Id字段没有赋值");
}
if (param.ParentIdField == null)
{
throw new Exception("父Id字段没有赋值");
}
var getParentId = param.ParentIdField.Compile();
var setParentId = typeof(T).GetProperty(param.ParentIdField.GetPropertyName());
foreach (var id in param.RemoveIds)
{
var item = param.TreeLists.Find(p => param.IdField.Invoke(p).Equals(id));
if (item != null)
{
var rows = param.TreeLists.Where(p => getParentId.Invoke(p).Equals(param.IdField.Invoke(item))).ToList();
foreach (var row in rows)
{
setParentId?.SetValue(row, getParentId(item));
}
}
param.TreeLists.RemoveAll(p => param.IdField.Invoke(p).Equals(id));
}
return(param.TreeLists);
}
/// <summary>
/// 删除树节点（下级树接驳上来）
/// </summary>
/// <typeparam name="T"></typeparam>
/// <typeparam name="TPk"></typeparam>
public static List <T> DeleteNodes <T, TPk>(DeleteNodeParam <T, TPk> param) where T : class
{
return(DeleteNodeUtility.DeleteNodes(param));
}