DataGridView无法滚动到新输入的行 [英] DataGridView can't scroll to newly entered row

问题描述

大家好！

所以我正在尝试，当我的数据网格视图中插入一行时，向下滚动到该行，以便该行在视图中。为了给你一些上下文，dgv使用usb条形码扫描仪输入行。由于表单是在平板电脑上，我们很快就会开始
用完空间，以便在插入dgv时显示所有行。我想要做的是让新插入的项始终在底部可见（AKA总是滚动到dgv的底部）。

So I am attempting to, when a row is inserted into my datagridview, scroll down to that row so that the row is in view. To give you some context, the dgv is having rows entered using a usb barcode scanner. Since the form is on a tablet, we quickly begin to run out of room to display all the rows on the dgv as they are inserted. What I am wanting to do is have the newly inserted item be always visible at the bottom (AKA always scroll to the bottom of the dgv).

我试图使用dgv这样做。 FirstDisplayedScrollingRowIndex，但它似乎不起作用。

I have attempted to do this using dgv.FirstDisplayedScrollingRowIndex, but it doesn't seem to work.

此外，这可能不会影响任何事情，但这一切都发生在模态形式背后。

Also, this may not affect anything, but this is all happening behind a modal form.

感谢您的帮助！

推荐答案

欢迎来到MSDN论坛。

Welcome to the MSDN forum.

您可以在插入的最后添加以下代码。

You can add following code at the last of insert.

 dataGridView1.FirstDisplayedScrollingRowIndex = dataGridView1.RowCount - 1;

简单演示供您参考。

  public partial class Form2 : Form
    {
        public Form2()
        {
            InitializeComponent();
        }

        private void button2_Click(object sender, EventArgs e)
        {
            dt.Rows.Add(new object[] { "e", "e", "e", "e", "e" });
            dataGridView1.FirstDisplayedScrollingRowIndex = dataGridView1.RowCount - 1;
        }
        DataTable dt;
        private void Form2_Load(object sender, EventArgs e)
        {
            dt = new DataTable();
            dt.Columns.Add("col1");
            dt.Columns.Add("col2");
            dt.Columns.Add("col3");
            dt.Columns.Add("col4");
            dt.Columns.Add("col5");
            dt.Rows.Add(new object[] { "a", "a", "a", "a", "a" });
            dt.Rows.Add(new object[] { "b", "b", "b", "b", "b" });
            dt.Rows.Add(new object[] { "c", "c", "c", "c", "c" }); 
            dt.Rows.Add(new object[] { "d", "d", "d", "d", "d" });
            dataGridView1.AllowUserToAddRows = false;
            dataGridView1.DataSource = dt;
        }
    }

希望有所帮助，

最好的问候，

Bob

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