ScrollPattern
ScrollPattern是用来操作控件的滚动条，目前支持ScrollPattern的控件有ListBox，listView，GridView，TreeView.
ScrollPattern主要方法
1. Scroll 水平和垂直滚动内容区域的可见区域滚动， Scroll有两个参数，其类型为ScrollAmount枚举类型。
2. ScrollHorizontal 按指定的 ScrollAmount 水平滚动内容区域的当前可见区域滚动。
3. ScrollVertical 按指定的 ScrollAmount 垂直滚动内容区域的当前可见区域滚动。
ScrollPattern属性
1. VerticallyScrollable 属性用于判定是否可以垂直滚动。
2. HorizontallyScrollable 属性用于判定是否可以水平滚动。
3. HorizontalScrollPercent 获取当前水平滚动条的位置。
4. VerticalScrollPercent 获取当前垂直滚动条的位置。
下面我们通过一个实例来演示自动化测试中如何使用ScrollPattern来测试GridView中滚动条的方法：
Code
| 1using System; 2using System.Text; 3using System.Diagnostics; 4using System.Threading; 5using System.Windows.Automation; 6 7namespace UIATest 8{ 9 class Program 10 { 11 static void Main(string[] args) 12 { 13 Process process = Process.Start(@"F:\CSharpDotNet\AutomationTest\ATP\WpfApp\bin\Debug\WpfApp.exe"); 14 int processId = process.Id; 15 Thread.Sleep(1000); 16 17 ScrollPattern#region ScrollPattern 18 AutomationElement element = FindElementById(processId, "listview1"); 19 AutomationElementCollection elementCollection=element.FindAll(TreeScope.Children, new PropertyCondition(AutomationElement.ControlTypeProperty,ControlType.DataItem)); 20 21 ScrollPattern scrollPattern = GetScrollPattern(element); 22 23 if (scrollPattern.Current.VerticallyScrollable) 24 { 25 while (elementCollection[22].Current.IsOffscreen) 26 { 27 scrollPattern.ScrollVertical(ScrollAmount.LargeIncrement); 28 } 29 } 30 #endregion 31 32 } 33 34 /**//// <summary> 35 /// Get the automation elemention of current form. 36 /// </summary> 37 /// <param name="processId">Process Id</param> 38 /// <returns>Target element</returns> 39 public static AutomationElement FindWindowByProcessId(int processId) 40 { 41 AutomationElement targetWindow = null; 42 int count = 0; 43 try 44 { 45 Process p = Process.GetProcessById(processId); 46 targetWindow = AutomationElement.FromHandle(p.MainWindowHandle); 47 return targetWindow; 48 } 49 catch (Exception ex) 50 { 51 count++; 52 StringBuilder sb = new StringBuilder(); 53 string message = sb.AppendLine(string.Format("Target window is not existing.try #{0}", count)).ToString(); 54 if (count > 5) 55 { 56 throw new InvalidProgramException(message, ex); 57 } 58 else 59 { 60 return FindWindowByProcessId(processId); 61 } 62 } 63 } 64 65 66 /**//// <summary> 67 /// Get the automation element by automation Id. 68 /// </summary> 69 /// <param name="windowName">Window name</param> 70 /// <param name="automationId">Control automation Id</param> 71 /// <returns>Automatin element searched by automation Id</returns> 72 public static AutomationElement FindElementById(int processId, string automationId) 73 { 74 AutomationElement aeForm = FindWindowByProcessId(processId); 75 AutomationElement tarFindElement = aeForm.FindFirst(TreeScope.Descendants, 76 new PropertyCondition(AutomationElement.AutomationIdProperty, automationId)); 77 return tarFindElement; 78 } 79 80 GetScrollPattern helper#region GetScrollPattern helper 81 /**//// <summary> 82 /// Get ScrollPattern 83 /// </summary> 84 /// <param name="element">AutomationElement instance</param> 85 /// <returns>ScrollPattern instance</returns> 86 public static ScrollPattern GetScrollPattern(AutomationElement element) 87 { 88 object currentPattern; 89 if (!element.TryGetCurrentPattern(ScrollPattern.Pattern, out currentPattern)) 90 { 91 throw new Exception(string.Format("Element with AutomationId '{0}' and Name '{1}' does not support the ScrollPattern.", 92 element.Current.AutomationId, element.Current.Name)); 93 } 94 return currentPattern as ScrollPattern; 95 } 96 97 #endregion 98 } 99} 100 |
XAML源码：
Code
| 1<Window x:Class="WpfApp.GridView" 2 xmlns=http://schemas.microsoft.com/winfx/2006/xaml/presentation 3 xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" 4 Title="GridView" Height="280" Width="467"> 5 <Grid> 6 <!--将鼠标放在方框的边缘点击就会产生相应的分割线生成Grid.RowDefinitions--> 7 <Grid.RowDefinitions> 8 <!--Auto，实际作用就是取实际控件所需的最小值;值为*或N*，实际作用就是取尽可能大的值;数字,绝对尺寸--> 9 <RowDefinition Height="*" /> 10 <RowDefinition Height="auto" MinHeight="95" /> 11 <RowDefinition Height="22" /> 12 </Grid.RowDefinitions> 13 <ListView Name="listview1" MinWidth="280" Grid.RowSpan="2" MouseMove="listview1_MouseMove"> 14 <ListView.View> 15 <GridView x:Name="gridView1"> 16 <GridViewColumn Header="EmployeeID" DisplayMemberBinding="{Binding Path=EmployeeID}"></GridViewColumn> 17 <GridViewColumn Header="FirstName" DisplayMemberBinding="{Binding Path=FirstName}"></GridViewColumn> 18 <GridViewColumn Header="LastName" DisplayMemberBinding="{Binding Path=LastName}"></GridViewColumn> 19 <GridViewColumn Header="Address" DisplayMemberBinding="{Binding Path=Address}"></GridViewColumn> 20 </GridView> 21 </ListView.View> 22 </ListView> 23 <!--Grid.Row="1"用来设置WrapPanel及Button应该在父容器的什么位置--> 24 </Grid> 25 26</Window> |
