using System;
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using System.Collections.Generic;
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using System.Linq;
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using System.Text;
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using System.Threading.Tasks;
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using System.Windows.Media;
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using System.Windows;
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using System.Windows.Controls;
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using System.Security.Cryptography;
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namespace XHandler.Class
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{
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/// <summary>
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/// 工具类
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/// </summary>
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public class Utilities
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{
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/// <summary>
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/// 获取父元素
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/// </summary>
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/// <typeparam name="T"></typeparam>
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/// <param name="obj"></param>
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/// <returns></returns>
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public static T FindVisualParent<T>(DependencyObject obj) where T : class
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{
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while (obj != null)
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{
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if (obj is T)
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{
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return obj as T;
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}
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obj = VisualTreeHelper.GetParent(obj);
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}
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return null;
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}
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/// <summary>
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/// 获取第一个子控件
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/// </summary>
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/// <typeparam name="ChildType"></typeparam>
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/// <param name="obj"></param>
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/// <returns></returns>
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public static ChildType FindVisualChild<ChildType>(DependencyObject obj) where ChildType : DependencyObject
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{
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for (int i = 0; i < VisualTreeHelper.GetChildrenCount(obj); i++)
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{
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DependencyObject child = VisualTreeHelper.GetChild(obj, i);
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if (child != null && child is ChildType)
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{
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return child as ChildType;
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}
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else
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{
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ChildType childOfChildren = FindVisualChild<ChildType>(child);
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if (childOfChildren != null)
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{
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return childOfChildren;
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}
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}
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}
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return null;
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}
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/// <summary>
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/// 获取指定类型的所有子控件
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/// </summary>
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/// <typeparam name="ChildType"></typeparam>
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/// <param name="obj"></param>
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/// <returns></returns>
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public static List<ChildType> FindAllVisualChild<ChildType>(DependencyObject obj) where ChildType : DependencyObject
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{
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List<ChildType > children = new List < ChildType >();
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for (int i = 0; i < VisualTreeHelper.GetChildrenCount(obj); i++)
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{
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DependencyObject child = VisualTreeHelper.GetChild(obj, i);
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if (child != null && child is ChildType)
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{
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children.Add(child as ChildType);
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}
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else
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{
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List<ChildType> childOfChildren = FindAllVisualChild<ChildType>(child);
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if (childOfChildren != null&& childOfChildren.Count>0)
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{
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children.AddRange(childOfChildren);
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}
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}
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}
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return children;
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}
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/// <summary>
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/// 获取最后一个子控件
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/// </summary>
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/// <typeparam name="ChildType"></typeparam>
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/// <param name="obj"></param>
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/// <returns></returns>
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public static ChildType FindLastVisualChild<ChildType>(DependencyObject obj) where ChildType : DependencyObject
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{
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for (int i = VisualTreeHelper.GetChildrenCount(obj)-1; i >=0; i--)
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{
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DependencyObject child = VisualTreeHelper.GetChild(obj, i);
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if (child != null && child is ChildType)
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{
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return child as ChildType;
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}
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else
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{
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ChildType childOfChildren = FindLastVisualChild<ChildType>(child);
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if (childOfChildren != null)
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{
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return childOfChildren;
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}
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}
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}
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return null;
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}
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/// <summary>
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/// 移除元素
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/// </summary>
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/// <param name="element"></param>
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public static void RemoveChild(UIElement element)
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{
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Window wnd = Application.Current.MainWindow;
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Grid grid = Utilities.FindVisualChild<Grid>(wnd);
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grid.Children.Remove(element);
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}
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public static TreeViewItem GetDataFromTreeViewItem(TreeView source, Point point)
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{
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UIElement element = source.InputHitTest(point) as UIElement; //直接获取最底层的元素，这里是textblock
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if (element != null)
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{
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return FindVisualParent<TreeViewItem>(element);//获取父控件
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}
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return null;
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}
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public static TreeViewItem FindTreeViewItem(ItemsControl item, object data)
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{
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TreeViewItem findItem = null;
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bool itemIsExpand = false;
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if (item is TreeViewItem)
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{
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TreeViewItem tviCurrent = item as TreeViewItem;
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itemIsExpand = tviCurrent.IsExpanded;
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if (!tviCurrent.IsExpanded)
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{
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//如果这个TreeViewItem未展开过，则不能通过ItemContainerGenerator来获得TreeViewItem
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tviCurrent.SetValue(TreeViewItem.IsExpandedProperty, true);
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//必须使用UpdaeLayour才能获取到TreeViewItem
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tviCurrent.UpdateLayout();
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}
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}
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for (int i = 0; i < item.Items.Count; i++)
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{
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TreeViewItem tvItem = (TreeViewItem)item.ItemContainerGenerator.ContainerFromIndex(i);
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if (tvItem == null)
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continue;
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object itemData = item.Items[i];
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if (itemData == data)
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{
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findItem = tvItem;
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break;
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}
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else if (tvItem.Items.Count > 0)
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{
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findItem = FindTreeViewItem(tvItem, data);
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if (findItem != null)
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break;
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}
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}
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if (findItem == null)
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{
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TreeViewItem tviCurrent = item as TreeViewItem;
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tviCurrent.SetValue(TreeViewItem.IsExpandedProperty, itemIsExpand);
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tviCurrent.UpdateLayout();
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}
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return findItem;
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}
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public static bool isNumberic(string _string)
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{
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if (string.IsNullOrEmpty(_string))
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return false;
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foreach (char c in _string)
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{
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if (!char.IsDigit(c))
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//if(c<'0' || c>'9')//最好的方法,在下面测试数据中再加一个0，然后这种方法效率会搞10毫秒左右
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return false;
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}
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return true;
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}
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public static string GetMD5(string password)
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{
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MD5CryptoServiceProvider md5 = new MD5CryptoServiceProvider();
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byte[] bytValue, bytHash;
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bytValue = System.Text.Encoding.UTF8.GetBytes(password);
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bytHash = md5.ComputeHash(bytValue);
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md5.Clear();
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string sTemp = "";
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for (int i = 0; i < bytHash.Length; i++)
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{
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sTemp += bytHash[i].ToString("X").PadLeft(2, '0');
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}
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return sTemp.ToLower();
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}
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/// <summary>
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/// 查询通道在通道组中的下标值
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/// </summary>
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/// <param name="chArray"></param>
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/// <param name="chNum"></param>
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/// <returns></returns>
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public static int GetArrayIndex(int[] chArray,int chNum)
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{
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int index = 0;
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for(int i=0;i< chArray.Length;i++)
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{
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if (chArray[i]==chNum)
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{
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index = i; break;
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}
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}
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return index;
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}
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public static float[] GetFloatArrayFromStringArray(string[] strArray)
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{
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float[] floatArray= new float[strArray.Length];
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for(int i=0;i<strArray.Length;i++)
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{
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floatArray[i] = (float)Convert.ToDouble(strArray[i]);
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}
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return floatArray;
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}
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}
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}
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