选择一个包含wpf中给定值的datagrid单元格 [英] select a datagrid cell that contains a given value in wpf

问题描述

我将数据表绑定到wpf中的数据网格。第一列具有唯一值。现在，我想自动选择第二列中第一列具有给定值的单元格。我应该如何实现？例如，这是我的数据网格：

I bound a DataTable to a datagrid in wpf. The first column has unique values. Now I would like to autoselect a cell in the second column whose first column cell has the given value. How should I achieve that? For example，here is my datagrid:

名称|年龄

猫    |  2

狗   | 3

Name | Age
cat     |  2
dog    | 3

当用户输入 dog时，我需要选择 3。

When user input 'dog', I will need the '3' to be selected.

我尝试了这里显示的方法：

如何在WPF DataGrid中以编程方式选择行或单元格？

但是，我无法弄清楚显示的行号。即使我知道dataTable的行号，但由于允许用户对表进行排序，因此显示号可能会有所不同。

非常感谢。

I tried the method show here:
How to select a row or a cell in WPF DataGrid programmatically?
However, I cannot figure out the displaying row number. Even though I know the row number of the dataTable, the display number can be different since I allow users to sort the table.

Thanks a lot.

推荐答案

将网格的SelectionUnit属性设置为 Cell，并假定使用表的DefaultView馈送DataGrid：

Set your grid's SelectionUnit property to "Cell", and assuming you feed the DataGrid with the table's DefaultView:

private void button1_Click(object sender, RoutedEventArgs e)
{
  // Search for the source-row.
  var Element = MyDataTable.AsEnumerable()
    .FirstOrDefault(x => x.Field<string>("Name") == "horse");

  if (Element == null) return;

  // Found the row number in the DataGrid
  var RowOnGrid = MyGrid.Items.OfType<DataRowView>()
    .Select((a, Index) => new { data=a.Row, index = Index })
    .Where(x=> x.data == Element)
    .Select(x => x.index)
    .FirstOrDefault();

  // Assuming the desired column is the second one.
  MyGrid.SelectedCells.Clear();
  MyGrid.SelectedCells.Add(new DataGridCellInfo(MyGrid.Items[RowOnGrid], MyGrid.Columns[1]));
}

即使对行进行重新排序，它也应该起作用。

It should work even if you re-sort the rows.

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