方法一：

設置屬性：

Control.CheckForIllegalCrossThreadCalls = false;

開啟一個新線程

Thread th = new Thread(() => Search(detailID.Trim()));
th.IsBackground = true;
 th.Start();

 public void Search(string detailID)
{
dataGridView1.DataSource =BLLBillConsume.BllGetClearMarketLog_detail(detailID);
dataGridView1.Columns[
 
2].DefaultCellStyle.Alignment = DataGridViewContentAlignment.BottomRight;//文本向右對齊
 }

上面的方法不推薦，推薦以下方法：

拖一個組件backgroundWorker

設置屬性：

backgroundWorker1.WorkerReportsProgress = true;
backgroundWorker1.WorkerSupportsCancellation = true;

執行用時較長的操作，

backgroundWorker1.CancellationPending是用來判斷是否允許用戶取消
 

 private void backgroundWorker1_DoWork(object sender, DoWorkEventArgs e)
        {
            dtMain = BLLBillConsume.BllGetClearMarketLog_detail(detailID);
            if (!backgroundWorker1.CancellationPending)
            {//退出
                backgroundWorker1.CancelAsync();
            }
        }
 

Thread.Sleep(100000);只是為了模擬界面卡死

然後就顯示查詢到的數據

 private void backgroundWorker1_RunWorkerCompleted(object sender, RunWorkerCompletedEventArgs e)
        {
            dataGridView1.DataSource = dtMain;
            dataGridView1.Columns[2].DefaultCellStyle.Alignment = DataGridViewContentAlignment.BottomRight;//文本向右對齊
            //Search(detailID.Trim());
        }

這個是開啟線程

  backgroundWorker1.RunWorkerAsync();

c#界面卡死處理方法