如何在DataGridViews中同步水平滚动

时间:2014-01-06 15:35:50

标签: c# winforms datagridview

我有三个DataGridViews:dgvSTART; dgvFilter; dgvEdit。

我已经编辑了dgvSTART的滚动事件,内联了答案here,如下所示:

dgvEdit.FirstDisplayedScrollingColumnIndex = dgvSTART.FirstDisplayedScrollingColumnIndex;
dgvFilter.FirstDisplayedScrollingColumnIndex = dgvSTART.FirstDisplayedScrollingColumnIndex;

这样可行,但只有当dgvSTART的左侧列发生更改时(即列消失/显示在面板的一侧),才会滚动其他两个DataGridView。

是否可以将所有datagridviews都滚动为一个(忽略列边界)?

我认为这可以使用DataGridView的HorizontalScrollingOffset属性,但我的尝试失败了:

private void dgvSTART_Scroll(object sender, ScrollEventArgs e)
    {
        //using matching the first column shown
        dgvEdit.FirstDisplayedScrollingColumnIndex = dgvSTART.FirstDisplayedScrollingColumnIndex;
        dgvFilter.FirstDisplayedScrollingColumnIndex = dgvSTART.FirstDisplayedScrollingColumnIndex;

        try
        {
            //trying to use horizontalscrollingoffset
            if (e.NewValue < e.OldValue)
            {
                dgvEdit.HorizontalScrollingOffset = dgvFilter.HorizontalScrollingOffset - 10;
                dgvFilter.HorizontalScrollingOffset = dgvFilter.HorizontalScrollingOffset - 10;
            }
            else
            {
                dgvEdit.HorizontalScrollingOffset = dgvEdit.HorizontalScrollingOffset + 10;
                dgvFilter.HorizontalScrollingOffset = dgvFilter.HorizontalScrollingOffset + 10;
            }
        }
        catch (Exception) { }//do nothing with the exception        
    }

1 个答案:

答案 0 :(得分:4)

这段代码怎么样?

dataGridView_Scroll需要在表单的构造函数中注册。

dgvSTART.Scroll  += new ScrollEventHandler(dataGridView_Scroll);
dgvFilter.Scroll += new ScrollEventHandler(dataGridView_Scroll);
dgvEdit.Scroll   += new ScrollEventHandler(dataGridView_Scroll);

dataGridView_Scroll如下。

void dataGridView_Scroll(object sender, ScrollEventArgs e)
{
    DataGridView src;
    DataGridView dst1 = null;
    DataGridView dst2 = null;

    src = (DataGridView)sender;

    if (src == dgvSTART)
    {
        dst1 = dgvFilter;
        dst2 = dgvEdit;
    }
    else if (src == dgvFilter)
    {
        dst1 = dgvSTART;
        dst2 = dgvEdit;
    }
    else if (src == dgvEdit)
    {
        dst1 = dgvSTART;
        dst2 = dgvFilter;
    }

    if (dst1 != null && dst2 != null)
    {
        dst1.HorizontalScrollingOffset = dst2.HorizontalScrollingOffset = src.HorizontalScrollingOffset;

        dst1.FirstDisplayedScrollingRowIndex = Math.Min(dst1.RowCount - 1, src.FirstDisplayedScrollingRowIndex);
        dst2.FirstDisplayedScrollingRowIndex = Math.Min(dst2.RowCount - 1, src.FirstDisplayedScrollingRowIndex);
    }
}