如何使用线程更改Gridview中的某些单元格？

Question

如何使用线程更改Gridview中的某些单元格？我有一个来自数据库的查询，它用了很多时间来查询。所以它非常慢，我想使用线程更快加载数据。此外，线程完成后，它的工作可以更改网格视图中的数据？

Answer 1

using System.Threading; 
using System.Threading.Tasks; 

public partial class Form1 : Form 
{ 
    public Form1() 
    { 
     InitializeComponent(); 
     dataGridView1.DataSource = new List<Test>() { new Test { Name = "Original Value" } }; 
    } 

    // Start the a new Task to avoid blocking the UI Thread 
    private void button1_Click(object sender, EventArgs e) 
    { 
     Task.Factory.StartNew(this.UpdateGridView); 
    } 
    // Blocks the UI 
    private void button2_Click(object sender, EventArgs e) 
    { 
     UpdateGridView(); 
    } 

    private void UpdateGridView() 
    { 
     //Simulate long running operation 
     Thread.Sleep(3000); 
     Action del =() => 
      { 
       dataGridView1.Rows[0].Cells[0].Value = "Updated value"; 
      }; 
     // If the caller is on a different thread than the one the control was created on 
     // http://msdn.microsoft.com/en-us/library/system.windows.forms.control.invokerequired%28v=vs.110%29.aspx 
     if (dataGridView1.InvokeRequired) 
     { 
      dataGridView1.Invoke(del); 
     } 
     else 
     { 
      del(); 
     } 
    } 
}