键入时自动滚动DataGridView [英] Auto scroll DataGridView while typing

问题描述

我有一个问题，其中DataGidView的最后一列太长，您需要使用滚动条来显示该列的其余部分.
但是，当我键入文本时，键入时它不会自动滚动.

I have this problem where the last column in DataGidView is too long and you need to use scroll bar to go to show the rest of that column.
But when I type a text, it will not auto scroll while typing.

我想要的是我想在键入时自动滚动滚动条，以便用户在键入时不必使用滚动条.

What I want is that I want to auto scroll the scroll bar when typing so that the user will not have to use the scroll bar while typing.

这是图片:

如您所见，最后一列是备忘录.
当我在备忘录中键入文本时，它将不会自动滚动.如何实现呢?

As you can see the last column is memoranda.
When I type a text in memoranda it will not auto scroll. How to achieve this?

推荐答案

查看以此方式修改的单元格滚动行为是否可以在您的上下文中使用.

See whether the cells scroll behaviour modified in this manner can be of use in your context.

输入的 Cell 使用 FirstDisplayedCell .
这应确保输入 Cell 时始终将其滚动到视图中.
在编辑模式下，单元格范围将自动扩展.

The entered Cell is measured with DataGridView.GetCellDisplayRectangle() and, if it's Right position falls beyond the DataGridView bounds, the Cell before the current is set as the FirstDisplayedCell.
This should ensure that a Cell is always scrolled into view when entered.
When in edit mode, the Cell bounds will expand automatically.

此外，在考虑 Cell 边界范围时，请检查 GetCellDisplayRectangle()方法的 cutOverflow 参数是否有明显不同的行为.

Also, check the cutOverflow parameter of the GetCellDisplayRectangle() method for a slighltly different behaviour when considering a Cell bounds extent.

Private Sub DataGridView1_CellEnter(sender As Object, e As DataGridViewCellEventArgs)
    Dim CellArea As Rectangle = DataGridView1.GetCellDisplayRectangle(e.ColumnIndex, e.RowIndex, False)
    If CellArea.Right > DataGridView1.Width AndAlso e.ColumnIndex > 0 Then
        DataGridView1.FirstDisplayedCell = DataGridView1(e.ColumnIndex - 1, e.RowIndex)
    End If
End Sub

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