如何替换DataSet中的DataTable，以便DataGridView显示新的DataTable内容？

Question

• 要替换的DataSet与原始DataTable具有相同的TableName。
• 我尝试过DataSet.Tables.Clear（）以及DataSet.Tables.Remove（...）
• DataSet中的DataTable似乎被替换 - 但是，DataGridView继续显示旧的DataTable内容。
• 无法合并 - 需要完全替换新DataTable的内容。

• 只要新的DataTable TableName与要替换的DataTable的表名不同，我就可以替换和反映DataGridView中的更改。

  public partial class Form1 : Form
   {
  private DataSet _ds;
  public Form1()
  {
      InitializeComponent();
      _ds = new DataSet("DS");
      dataGridView1.DataSource = _ds;
      addTableOne();
  }
  private void addTableOne()
  {
      DataTable dtOne = new DataTable("Original");
  
      DataColumn auto = new DataColumn("AutoID", typeof(System.Int32));
      dtOne.Columns.Add(auto);
      DataColumn name = new DataColumn("Name", typeof(string));
      dtOne.Columns.Add(name);
  
      DataRow row = null;
      for (int i = 0; i < 5; i++)
      {
          row = dtOne.NewRow();
          row["AutoID"] = i + 1;
          row["Name"] = i + " - Original";
          dtOne.Rows.Add(row);
      }
  
      _ds.Tables.Add(dtOne);
  }
  
  private void button1_Click(object sender, EventArgs e)
  {
      label1.Text = "DataSet count: " + _ds.Tables.Count;
      dataGridView1.DataMember = "Original";
  }
  
  
  private DataTable getAltTable()
  {
      DataTable dtOne = new DataTable("Original");
  
      DataColumn auto = new DataColumn("AutoID", typeof(System.Int32));
      dtOne.Columns.Add(auto);
      DataColumn name = new DataColumn("Name", typeof(string));
      dtOne.Columns.Add(name);
  
      DataRow row = null;
      for (int i = 0; i < 10; i++)
      {
          row = dtOne.NewRow();
          row["AutoID"] = i + 1;
          row["Name"] = i + " - Alt";
          dtOne.Rows.Add(row);
      }
  
      return dtOne;
  }
  
  private void button3_Click(object sender, EventArgs e)
  {
      DataTable temp = _ds.Tables["Original"];
      string tTable = Convert.ToString(DateTime.Now.Ticks); ;
      temp.TableName = tTable;
      _ds.Tables.Remove(tTable);
  
      // tried
      //_ds.Tables.Clear();
  
      // tried following
      //temp.Dispose();
      //temp = null;
      label1.Text = "DataSet count: " + _ds.Tables.Count;
      timer1.Enabled = true;
  
  }
  
  // here is where the old datatable contents still show in DataGridView
  private void timer1_Tick(object sender, EventArgs e)
  {
      timer1.Enabled = false;
      DataTable dt = getAltTable();
      _ds.Tables.Add(dt);
      dataGridView1.DataMember = "Original";
      label1.Text = "DataSet count: " + _ds.Tables.Count;
  }
  

  }