wpf - Winium 驱动程序仅在打开 inspect.exe 时才识别 WPF 控件内部元素，否则将引发“未找到元素”异常

Question

我的 WPF 自定义控件具有内部元素。就我而言，我的自定义控件是网格，内部元素是单元格。您可以在下面找到 AutomationPeer 实现，

public class GridAutomationPeer : FrameworkElementAutomationPeer, IGridProvider
{
      public virtual GridModel Model
        {
            get
            {
                var grid = this.Owner as GridBase;
                return grid.Model;
            }
        }
protected override AutomationControlType GetAutomationControlTypeCore()
        {
            return AutomationControlType.DataGrid;
        }

        protected override string GetClassNameCore()
        {
            return this.Owner.GetType().Name;
        }
protected override List<AutomationPeer> GetChildrenCore()
        {
            var peers = new List<AutomationPeer>();
            foreach (var kvp in this.cellPeers)
            {
                peers.Add(kvp.Value);
            }
            return peers;
        }
public override object GetPattern(PatternInterface patternInterface)
        {
            switch (patternInterface)
            {
                case PatternInterface.Grid:
                case PatternInterface.Selection:
                case PatternInterface.Table:
                    return this;

            return base.GetPattern(patternInterface);
        }
}
     int IGridProvider.ColumnCount
        {
            get
            {
                return this.Model.ColumnCount;
            }
        }

IRawElementProviderSimple IGridProvider.GetItem(int row, int column)
        {
            if (row < this.Model.RowCount && column < this.Model.ColumnCount)
            {
                var cellPeer = this.GetOrCreateCellPeer(row, column);
                if (cellPeer != null)
                {
                    var item = this.ProviderFromPeer(cellPeer);
                    return item;
                }
            }
            return null;
        }
int IGridProvider.RowCount
        {
            get
            {
                return this.Model.RowCount;
            }
        }
}

我的问题是，只有在打开 inspect.exe 时，它​​才能在 Winium 测试脚本中正确识别。如果 inspect.exe 没有打开，Winium 会抛出“Element not found”异常。

下面是我的测试脚本，

try
{
    var grid = driver.FindElementById("grid");
    var cell = grid.FindElement(By.Id("6,1"));
    if (cell.Text != "Movie Poster")
        Assert.Fail("Cell value is not Movie Poster");
    driver.Close();
}
catch (Exception ex)
{
    Console.WriteLine(ex.Message.ToString());
}

异常详情，

请为此建议我任何解决方案。

标签： wpfautomationui-automationwiniumautomationpeer