DataGridView: Scroll down automatically only if the scroll is at the bottom
c#, datagridview, scrollbar
Solution
You can try this:
int firstDisplayed = liveDataTable.FirstDisplayedScrollingRowIndex;
int displayed = liveDataTable.DisplayedRowCount(true);
int lastVisible = (firstDisplayed + displayed) - 1;
int lastIndex = liveDataTable.RowCount - 1;
liveDataTable.Rows.Add(); //Add your row
if(lastVisible == lastIndex)
{
liveDataTable.FirstDisplayedScrollingRowIndex = firstDisplayed + 1;
}
So basically check if the last row is visible and if it is scroll 1 row down after adding the new row.
Problem
I have a program that uses dataGridView for showing data that updates automatically every second by adding rows to dataGridView. When I want to read something around the beginning, I scroll up, and even when data updates, the scroll bar doesn't go down, it is good. But I want the scroll bar to go down only when it is at the bottom of dataGridView. The behavior I want when a new row is added to the text: if the scrollbar is at the bottom, scroll down automatically. if the scrollbar is elsewhere, don't scroll. The code I have written for this and unfortunately doesn't work is: ``` private void liveDataTable_Scroll(object sender, ScrollEventArgs e) { ScrollPosition = liveDataTable.FirstDisplayedScrollingRowIndex; if (ScrollPosition == liveDataTable.RowCount - 1) { IsScrolledToBottom = true; } else { IsScrolledToBottom = false; } } public void AddRowToDataGridMethod() { dataTable.Rows.Add(); if (dataWin.IsScrolledToBottom == true) dataWin.LiveDataTable.FirstDisplayedScrollingRowIndex = (dataWin.ScrollPosition + 1); else dataWin.LiveDataTable.FirstDisplayedScrollingRowIndex = dataWin.ScrollPosition; } ```