什么遍历WPF中DataGrid的所有单元格
时间: 2024-05-01 18:22:24 浏览: 165
在WPF中遍历DataGrid的所有单元格,可以使用以下方法:
1. 遍历行和列:可以使用DataGrid的Items和Columns属性来遍历所有行和列。然后可以使用VisualTreeHelper.GetChild()方法获取单元格元素,再进一步处理。
```csharp
for (int i = 0; i < dataGrid.Items.Count; i++)
{
DataGridRow row = (DataGridRow)dataGrid.ItemContainerGenerator.ContainerFromIndex(i);
if (row != null)
{
for (int j = 0; j < dataGrid.Columns.Count; j++)
{
DataGridCell cell = (DataGridCell)row.ItemContainerGenerator.ContainerFromIndex(j);
if (cell != null)
{
//处理单元格
}
}
}
}
```
2. 使用VisualTreeHelper遍历:可以使用VisualTreeHelper遍历DataGrid的子元素,找到所有单元格元素。
```csharp
for (int i = 0; i < dataGrid.Items.Count; i++)
{
DataGridRow row = (DataGridRow)dataGrid.ItemContainerGenerator.ContainerFromIndex(i);
if (row != null)
{
for (int j = 0; j < dataGrid.Columns.Count; j++)
{
DataGridCell cell = GetCell(dataGrid, i, j);
if (cell != null)
{
//处理单元格
}
}
}
}
private DataGridCell GetCell(DataGrid dataGrid, int row, int column)
{
DataGridRow rowContainer = GetRow(dataGrid, row);
if (rowContainer != null)
{
DataGridCellsPresenter presenter = GetVisualChild<DataGridCellsPresenter>(rowContainer);
if (presenter == null)
{
dataGrid.ScrollIntoView(rowContainer, dataGrid.Columns[column]);
presenter = GetVisualChild<DataGridCellsPresenter>(rowContainer);
}
if (presenter != null)
{
DataGridCell cell = (DataGridCell)presenter.ItemContainerGenerator.ContainerFromIndex(column);
return cell;
}
}
return null;
}
private DataGridRow GetRow(DataGrid dataGrid, int index)
{
DataGridRow row = (DataGridRow)dataGrid.ItemContainerGenerator.ContainerFromIndex(index);
if (row == null)
{
dataGrid.UpdateLayout();
dataGrid.ScrollIntoView(dataGrid.Items[index]);
row = (DataGridRow)dataGrid.ItemContainerGenerator.ContainerFromIndex(index);
}
return row;
}
private T GetVisualChild<T>(Visual parent) where T : Visual
{
T child = default(T);
for (int i = 0; i < VisualTreeHelper.GetChildrenCount(parent); i++)
{
Visual visual = (Visual)VisualTreeHelper.GetChild(parent, i);
child = visual as T;
if (child == null)
{
child = GetVisualChild<T>(visual);
}
if (child != null)
{
break;
}
}
return child;
}
```
以上两种方法,都可以遍历DataGrid的所有单元格,然后进行相应的处理。
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