模拟点击datagrid标题列 [英] Simulate a click on datagrid header column

问题描述

我在寻找并发现：如何模拟用户点击WPF中的datagrid的列标题，但是我不知道我必须放在your_control中，我使用的是Silverlight 5可以有人帮我吗？

  DataGridColumnHeaderItemAutomationPeer peer = new DataGridColumnHeaderItemAutomationPeer（Your_control）; 
  

我的DataGrid是dgEmployee

当我尝试使用它，定义它：

  DataGridColumnHeaderItemAutomationPeer peer = new DataGridColumnHeaderItemAutomationPeer（dgEmployee）; 
  

系统发送错误：

与System.Windows.Automation.Peers.DataGridColumnHeaderAutomationPeer.DataGridColu mnHeaderAutomationPeer（System.Windows.Controls.Primitives.DataGridColumnHeader）的最佳重载方法匹配有一些无效的参数

如何将dgEmployee的DataGridColumnHeader作为参数？

谢谢!!

解决方案

解决方案是：

  System.Windows.Controls.Primitives .DataGridColumnHeader headerObj; 
 
 headerObj = GetColumnHeaderFromColumn（myDataGrid，myDataGrid.Columns [1] .Header）; 
 
 System.Windows.Automation.Peers.DataGridColumnHeaderAutomationPeer peer = 
 new DataGridColumnHeaderAutomationPeer（headerObj）; 
 IInvokeProvider invoker =（IInvokeProvider）peer; 
 invoker.Invoke（）; //以编程方式调用点击
 
 
 private System.Windows.Controls.Primitives.DataGridColumnHeader GetColumnHeaderFromColumn（DependencyObject parent，object header）
 {
 int count = VisualTreeHelper。 GetChildrenCount（parent）; （int i = 0; i< count; i ++）
 {
 DependencyObject child = VisualTreeHelper.GetChild（parent，i）; 
 if（child！= null）
 {
 if（child is System.Windows.Controls.Primitives.DataGridColumnHeader）
 {
 System.Windows.Controls.Primitives .DataGridColumnHeader columnHeader = child as System.Windows.Controls.Primitives.DataGridColumnHeader; 
 if（header.Equals（columnHeader.Content））
 {
 return columnHeader; 
} 
} 
 else 
 {
 System.Windows.Controls.Primitives.DataGridColumnHeader columnHeader = GetColumnHeaderFromColumn（child，header）; 
 if（null！= columnHeader）
 {
 return columnHeader; 
} 
} 
} 
} 
 
返回null; 
 
} 
  

可能对某人有帮助， p>

I was looking for and found: How to simulate the user click on a column header of a datagrid in WPF?, but I don't know what I must put in "your_control", I'm using Silverlight 5, can somebody help me??

DataGridColumnHeaderItemAutomationPeer peer = new DataGridColumnHeaderItemAutomationPeer (Your_control);

my DataGrid is dgEmployee

When I try use it, defining it so:

DataGridColumnHeaderItemAutomationPeer peer = new DataGridColumnHeaderItemAutomationPeer (dgEmployee);

System send me an error:

"The best overloaded method match for 'System.Windows.Automation.Peers.DataGridColumnHeaderAutomationPeer.DataGridColu‌​mnHeaderAutomationPeer(System.Windows.Controls.Primitives.DataGridColumnHeader)' has some invalid arguments"

How I can put the DataGridColumnHeader of my dgEmployee as argument?

Thanks!!

解决方案

the solution is:

System.Windows.Controls.Primitives.DataGridColumnHeader headerObj;

headerObj = GetColumnHeaderFromColumn(myDataGrid, myDataGrid.Columns[1].Header);

System.Windows.Automation.Peers.DataGridColumnHeaderAutomationPeer peer =
                                new DataGridColumnHeaderAutomationPeer(headerObj);
                            IInvokeProvider invoker = (IInvokeProvider)peer;
                            invoker.Invoke(); // Invoke a click programmatically   


    private System.Windows.Controls.Primitives.DataGridColumnHeader GetColumnHeaderFromColumn(DependencyObject parent, object header)
    {            
        int count = VisualTreeHelper.GetChildrenCount(parent);
        for (int i = 0; i < count; i++)
        {
            DependencyObject child = VisualTreeHelper.GetChild(parent, i);
            if (child != null)
            {
                if (child is System.Windows.Controls.Primitives.DataGridColumnHeader)
                {
                    System.Windows.Controls.Primitives.DataGridColumnHeader columnHeader = child as System.Windows.Controls.Primitives.DataGridColumnHeader;
                    if (header.Equals(columnHeader.Content))
                    {
                        return columnHeader;
                    }
                }
                else
                {
                    System.Windows.Controls.Primitives.DataGridColumnHeader columnHeader = GetColumnHeaderFromColumn(child, header);
                    if (null != columnHeader)
                    {
                        return columnHeader;
                    }
                }
            }
        }

        return null;

    }

maybe can be helpful for somebody, regards from Mexico

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