DataGridView的滚动使用鼠标 [英] Scrolling DataGridView with Mouse

问题描述

所以我们都很熟悉点击的功能，并按住鼠标左键，然后将鼠标移动到格栅的边缘，列/行滚动和选择成长。

So we are all familiar with the functionality of click and holding down the mouse button, then moving the mouse to the edge of a grid, and the columns/rows scroll and the selection grows.

我有一个基于DataGridView的控制，我不得不把多选关闭和处理选择过程中自己由于性能问题，现在点击+保持滚动功能也被禁用。

I have a DataGridView-based control that I had to turn MultiSelect off and handle the selection process myself due to performance issues, and now the click+hold scrolling feature is disabled as well.

关于如何去在这个功能写回有什么建议？

Any suggestions about how to go about writing back in this functionality?

我想用一些简单的像MouseLeave事件中，但我不知道如何确定它留下了位置，并实施动态的滚动速度。

I was thinking of using something simple like the MouseLeave event, but I'm not sure how to determine which position it left, as well as implementing a dynamic scroll speed.

推荐答案

只需添加这段代码到你的 Form1_Load的

Just add this code to your Form1_Load

DataGridView1.MouseWheel += new MouseEventHandler(DataGridView1_MouseWheel);

和这个人是MouseWheel事件

And this one is for the MouseWheel event

void DataGridView1_MouseWheel(object sender, MouseEventArgs e)
{
    int currentIndex = this.DataGridView1.FirstDisplayedScrollingRowIndex;
    int scrollLines = SystemInformation.MouseWheelScrollLines;

    if (e.Delta > 0) 
    {
        this.DataGridView1.FirstDisplayedScrollingRowIndex 
            = Math.Max(0, currentIndex - scrollLines);
    }
    else if (e.Delta < 0)
    {
        this.DataGridView1.FirstDisplayedScrollingRowIndex 
            = currentIndex + scrollLines;
    }
}

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