滚动到 C# DataGridView 的底部
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Scroll to bottom of C# DataGridView
提问by Motumbo
I'm trying to scroll to bottom of a DataGridView in a C# WinForm.
我正在尝试在 C# WinForm 中滚动到 DataGridView 的底部。
This code works with a TextBox:
此代码适用于文本框：
textbox_txt.SelectionStart = textbox_txt.Text.Length;
textbox_txt.ScrollToCaret();
... but I don't know how to do it with a DataGridView. Any help, please?
...但我不知道如何用 DataGridView 做到这一点。请问有什么帮助吗？
采纳答案by Mark Hall
To scroll to bottom of DataGridViewtry this.
滚动到底部DataGridView试试这个。
dataGridView1.FirstDisplayedScrollingRowIndex = dataGridView1.RowCount-1;
回答by Ed Sharp
As a commercial programmer, I use a C# DLL to handle all my DataGridView projects which gives me language freedom for whatever project I undertake. All of my programs trap all key-presses so that I can use them for my own purposes. For DataGridView scrolling, I use the PageUp/PageDown keys for a single page, Ctrl/Page for single line and Alt/Page for top (Up) and bottom (Down). C# code and Basic calling sequence as follows:
作为一名商业程序员，我使用 C# DLL 来处理我所有的 DataGridView 项目，这让我可以在任何项目中自由使用语言。我的所有程序都会捕获所有按键，以便我可以将它们用于自己的目的。对于 DataGridView 滚动，我将 PageUp/PageDown 键用于单页，Ctrl/Page 用于单行，Alt/Page 用于顶部 (Up) 和底部 (Down)。C#代码和Basic调用顺序如下：
//---------- C# Dll Partial Source -----------
public int RowShow
{ get { return vu.DisplayedRowCount(false); } }
public int RowCount
{ get { return vu.RowCount; } }
public void PageMove(int rows)
{
int rowlimit = vu.RowCount - 1;
int calc = vu.FirstDisplayedScrollingRowIndex + rows;
if (calc > rowlimit) calc = rowlimit; // Go to bottom
if (calc < 0) calc = 0; // Go to top
vu.FirstDisplayedScrollingRowIndex = calc;
}
// ---------- End Data Grid View ----------
//---------- Calling Program C# ----------
public void Page_Key(int val, int lastKey)
{
int inc = 1; // vu is DataGridView
If (val == 33) inc = -1;
int rowsDisp = vu.RowShow; // # of rows displayed
int rowsMax = vu.RowCount; // # of rows in view
int rows = 0;
switch (lastKey)
{
case 17: // Ctrl prior to Page
rows = inc;
break;
case 19: // Alt prior to Page
rows = rowsMax * inc;
break;
default:
rows = rowsDisp * inc
break;
} // end switch
vu.PageMove(rows)
} // end Page_Key
'----- Calling Program B4PPC, VB -----
Sub Page_Key(val,lastKey) ' 33=PageUp, 34=Down
inc = 1 ' vu is DataGridView
If val = 33 then inc = -1
rowsDisp = vu.RowShow ' # of rows displayed
rowsMax = vu.RowCount ' # of rows in view
rows = 0
Select lastKey
Case 17 ' Ctrl prior to Page
rows = inc
Case 19 ' Alt prior to Page
rows = rowsMax * inc
Case Else
rows = rowsDisp * inc
End Select
lastKey = ""
vu.PageMove(rows)
End Sub
