可以直接修改
点击保存
private void saveline_Click(object sender, EventArgs e)
{
db.update("select * from Buslines", dsline);
}
dsline 是全局变量DataSet
DBHelper db = null;
DataSet dsline = null;
因为在Load中也要用到所以全局
private void findLine()
{
dsline = db.execute("select * from Buslines");
dgvline.DataSource = dsline.Tables[0];
dgvline.MultiSelect = false;
dgvline.SelectionMode = DataGridViewSelectionMode.FullRowSelect;
dgvline.Columns[0].HeaderText = "线路编号";
dgvline.Columns[1].HeaderText = "始发站";
dgvline.Columns[2].HeaderText = "终点站";
dgvline.Columns[3].HeaderText = "距离";
}
数据库帮助类 db
public void update(string sql,DataSet ds)
{
SqlDataAdapter sda = new SqlDataAdapter(sql, conn);
SqlCommandBuilder scb = new SqlCommandBuilder(sda);
sda.Update(ds);
ds.AcceptChanges();
}