Ｃ＃利用线程查询数据库数据，出现假死现象
当数据库里数据量大的时候，查询会出现假死现象，代码如下，请各高人指导：
public partial class Form6 : Form
  {
  public delegate void myDelegate();  

  DataTable dt;  

  Thread tSo;  

  private MMS.Public.DbAccLibry.DbAccess mydbacc;

  public Form6()
  {
  mydbacc = new MMS.Public.DbAccLibry.DbAccess();
  mydbacc.DatabaseInint(MMS.Public.DbAccLibry.DataBaseType.MsSqlServer, "Server=192.192.192.8;Database=escashsystem;User ID=sa;Password=Hy@ecSun.cn;Connect Timeout=20;Pooling=True;Min Pool Size=1;Max Pool Size=100;Persist Security Info=False;Asynchronous Processing=true;Integrated Security=false;");

  InitializeComponent();
  }
   
  private void button1_Click(object sender, EventArgs e)
  {  
  try
  {
  tSo = new Thread(new ThreadStart(ThreadWork));
  tSo.Start();  
  }  
  catch (Exception ex)
  {
  MessageBox.Show(ex.Message.ToString() + "，数据查询失败", "查询提示", MessageBoxButtons.OK, MessageBoxIcon.Information);
  return;
  }  
  }
   
  void ThreadWork()
  {
  label2.BeginInvoke(new myDelegate (aa)) ;
  this.dataGridView1.BeginInvoke(new myDelegate(FillData));//异步调用（来填充）

  //this.Cursor = Cursors.Default;
  label2.BeginInvoke(new myDelegate(bb));
  }

  private void FillData()
  {
  dt = mydbacc.ExecuteDataSet(CommandType.Text, "select * from ecv_spbaseinfo ").Tables[0];  
  this.dataGridView1.DataSource = dt.DefaultView;  
  }

  private void aa()
  {
  this.label2.Text = "正在查询电价数据...";
  }
  private void bb()
  {
  this.label2.Text = "查询结束...";
  }
   
  }



------解决方案--------------------
建议改为：

public delegate void PDelegate(DataTable t); 

void ThreadWork()
{
label2.BeginInvoke(new myDelegate (aa)) ;

DataTable dt = mydbacc.ExecuteDataSet(CommandType.Text, "select * from ecv_spbaseinfo ").Tables[0];
this.dataGridView1.BeginInvoke(new PDelegate(FillData),new object[]{dt});//异步调用（来填充）

//this.Cursor = Cursors.Default;
label2.BeginInvoke(new myDelegate(bb));
}


private void FillData(DataTable dt)
{
this.dataGridView1.DataSource = dt.DefaultView;
}