使用UI Automation实现自动化测试--4.8 （GridPattern)

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GridPattern

支持GridPattern的最常见的控件为GridView，在WPF中使用ListView和GridView组合即可得到相应的GridView。

GridPattern的方法

GetItem：此方法有两个参数，即DataGrid的Row和Column。

通过GridPattern的GetItem方法可以获取DataGrid中的某个确定的单元格，进而对单元进行操作。

对单元格的操作主要有以下几个方面：

1. 编辑单元个中的数据。

2. 获取单元格中的数据。

3. 获取单元格中嵌套的AutomationElement（一般使用与自定义控件中）。

GridPattern的属性

GridPattern的Current属性中有如下两个属性：

1. RowCount属性：GridPattern二维表格的行数。

2. ColumnCount属性：GridPattern二维表格列数。

下面我们通过一个实例来演示自动化测试中如何使用GridPattern来测试GridView的方法：

Code
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using System;
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using System.Text;
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using System.Diagnostics;
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using System.Threading;
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using System.Windows.Automation;
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namespace UIATest
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{
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class Program
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{
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static void Main(string[] args)
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{
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Process process = Process.Start(@"F:\CSharpDotNet\AutomationTest\ATP\WpfApp\bin\Debug\WpfApp.exe");
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int processId = process.Id;
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Thread.Sleep(1000);
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GridPattern Test#region GridPattern Test
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AutomationElement element = FindElementById(processId, "listview1");
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GridPattern pattern = GetGridPattern(element);
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//Get cell element which row and column is 1
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AutomationElement tempElement = pattern.GetItem(1, 1);
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Console.WriteLine("Cell which row = '{0}', column = '{1}', cell value is '{2}'",
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1, 1, tempElement.Current.Name);
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Console.WriteLine("Grid row count = '{0}', column count = '{1}'",
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pattern.Current.RowCount, pattern.Current.ColumnCount);
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#endregion
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}
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/**//// <summary>
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/// Get the automation elemention of current form.
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/// </summary>
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/// <param name="processId">Process Id</param>
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/// <returns>Target element</returns>
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public static AutomationElement FindWindowByProcessId(int processId)
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{
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AutomationElement targetWindow = null;
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int count = 0;
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try
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{
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Process p = Process.GetProcessById(processId);
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targetWindow = AutomationElement.FromHandle(p.MainWindowHandle);
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return targetWindow;
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}
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catch (Exception ex)
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{
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count++;
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StringBuilder sb = new StringBuilder();
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string message = sb.AppendLine(string.Format("Target window is not existing.try #{0}", count)).ToString();
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if (count > 5)
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{
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throw new InvalidProgramException(message, ex);
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}
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else
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{
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return FindWindowByProcessId(processId);
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}
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}
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}
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/**//// <summary>
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/// Get the automation element by automation Id.
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/// </summary>
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/// <param name="windowName">Window name</param>
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/// <param name="automationId">Control automation Id</param>
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/// <returns>Automatin element searched by automation Id</returns>
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public static AutomationElement FindElementById(int processId, string automationId)
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{
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AutomationElement aeForm = FindWindowByProcessId(processId);
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AutomationElement tarFindElement = aeForm.FindFirst(TreeScope.Descendants,
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new PropertyCondition(AutomationElement.AutomationIdProperty, automationId));
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return tarFindElement;
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}
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GridPattern helper#region GridPattern helper
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/**//// <summary>
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/// Get GridPattern
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/// </summary>
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/// <param name="element">AutomationElement instance</param>
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/// <returns>GridPattern instance</returns>
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public static GridPattern GetGridPattern(AutomationElement element)
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{
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object currentPattern;
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if (!element.TryGetCurrentPattern(GridPattern.Pattern, out currentPattern))
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{
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throw new Exception(string.Format("Element with AutomationId '{0}' and Name '{1}' does not support the GridPattern.",
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element.Current.AutomationId, element.Current.Name));
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}
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return currentPattern as GridPattern;
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}
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#endregion
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}
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}
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对应的XAML代码如下：

Code
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<Window x:Class="WpfApp.GridView"
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xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
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xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
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Title="GridView" Height="426" Width="558">
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<Grid>
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<Grid.RowDefinitions>
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<RowDefinition Height="*" />
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<RowDefinition Height="auto" MinHeight="95" />
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<RowDefinition Height="22" />
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</Grid.RowDefinitions>
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<ListView Name="listview1" MinWidth="280" Grid.RowSpan="2" MouseMove="listview1_MouseMove">
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<ListView.View>
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<GridView x:Name="gridView1">
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<GridViewColumn Header="EmployeeID" DisplayMemberBinding="{Binding Path=EmployeeID}"></GridViewColumn>
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<GridViewColumn Header="FirstName" DisplayMemberBinding="{Binding Path=FirstName}"></GridViewColumn>
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<GridViewColumn Header="LastName" DisplayMemberBinding="{Binding Path=LastName}"></GridViewColumn>
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<GridViewColumn Header="Address" DisplayMemberBinding="{Binding Path=Address}"></GridViewColumn>
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</GridView>
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</ListView.View>
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</ListView>
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</Grid>
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</Window>
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GridView窗体后台代码如下：

Code
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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.Windows;
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using System.Windows.Controls;
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using System.Windows.Data;
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using System.Windows.Documents;
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using System.Windows.Input;
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using System.Windows.Media;
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using System.Windows.Media.Imaging;
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using System.Windows.Shapes;
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using System.Data.SqlClient;
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using System.Data;
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namespace WpfApp
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{
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/**//// <summary>
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/// Interaction logic for GridView.xaml
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/// </summary>
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public partial class GridView : Window
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{
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public GridView()
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{
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InitializeComponent();
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getData();
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}
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SqlDataAdapter sda;
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DataTable dt;
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void getData()
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{
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//Northwind database download path:http://download.csdn.net/down/845087/beyondchina123
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//init sqlconnection
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SqlConnectionStringBuilder connbuilder = new SqlConnectionStringBuilder();
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connbuilder.DataSource = ".";//本地服务器
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connbuilder.IntegratedSecurity = true;//Windows集成验证
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connbuilder.InitialCatalog = "Northwind";//数据库为Northwind
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SqlConnection conn = new SqlConnection(connbuilder.ConnectionString);
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sda = new SqlDataAdapter("select EmployeeID,FirstName,LastName,Address from Employees ", conn);
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SqlCommandBuilder commbuilder = new SqlCommandBuilder(sda);
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dt = new DataTable();
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sda.Fill(dt);
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listview1.ItemsSource = dt.DefaultView;
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}
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}
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}
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本文主要简单介绍了GridPattern以及GridPattern在测试中是使用方法。