关于datagridview的强制刷新

Question

在程序中更改了datagridview中的内容，并且也已经把相应的更改成功保存到了数据库，现在想要强制刷新datagridview的显示内容，代码如下 private void button1_Click(object sender, EventArgs e)
        {
            if (UserDAL.Delete(int.Parse(this.dataGridView1.CurrentRow.Cells[0].Value.ToString())))
            {
                MessageBox.Show("Succeed!!!");
                this.workshopAssistXDataSet.User.Clear();
                this.userTableAdapter.Fill(this.workshopAssistXDataSet.User);
                this.userBindingSource.DataSource = this.workshopAssistXDataSet.User;
                this.dataGridView1.DataSource = this.userBindingSource;
                this.dataGridView1.Refresh();
            }else{
                MessageBox.Show("Failed!!!");
            }
        }但是datagridview中的内容还是原来的，哪位大虾能告诉我怎么做么？

Answer 1

再次绑定DataBind(),而不是Refresh(); this.userTableAdapter.Fill(this.workshopAssistXDataSet.User);
 this.userBindingSource.DataSource = this.workshopAssistXDataSet.User;
 this.dataGridView1.DataSource = this.userBindingSource;
 this.dataGridView1.DataBind();

Answer 2

ds = null;
            ds = new DataSet();
            SqlDataAdapter adp = new SqlDataAdapter("select * from 表", con);
            adp.Fill(ds,"tb");
            dataGridView1.DataSource = ds.Tables["tb"];//ds为DATASET 
// con为Connection对象 

Answer 3

datagridview中没有databind这个函数啊