我想创建一个带排序功能的DataGridView输入。下面的代码片段还不够完美,即使我使用了grd.Refresh方法,DataGridView也没有显示更新后的值。如果我按箭头向下并再次向上,网格就会刷新。有没有其他办法可以强制刷新DataGridView的内容?
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
namespace TestSortedInput
{
public partial class Form1 : Form
{
DataTable _dt = new DataTable();
public Form1()
{
InitializeComponent();
grd.AllowUserToAddRows = false;
_dt.Columns.Add("sort", typeof(int));
_dt.Columns.Add("product", typeof(string));
_dt.DefaultView.Sort = "sort";
grd.DataSource = _dt;
}
private void dataGridView1_KeyUp(object sender, KeyEventArgs e)
{
if (e.KeyCode == Keys.Insert)
{
if (e.Modifiers == 0)
{
var r = _dt.NewRow();
r["sort"] = _dt.DefaultView.Count + 1;
r["product"] = "";
_dt.Rows.Add(r);
}
else if (e.Alt)
{
var drv = this.BindingContext[_dt].Current as DataRowView;
int sort = (int)drv["sort"];
for (int i = _dt.DefaultView.Count - 1; i >= (int)drv["sort"] - 1; --i)
{
_dt.DefaultView[i]["sort"] = (int) _dt.DefaultView[i]["sort"] + 1;
}
var r = _dt.NewRow();
r["sort"] = sort;
_dt.Rows.Add(r);
grd.Refresh();
}
}
}//void
}
}