关于多线程问题

显示全部楼层 · 2015-8-28 17:30:47

调试会把dataGridView1的行清空，导致直接跳出调试。
有没有人知道怎么解决或知道原因。

ibcadmin · 2015-8-29 09:57:09

贴代码

剑弑 · 2015-8-29 13:50:59

哪图片就是所写的代码

剑弑 · 2015-8-29 13:56:46

//类
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading;
using System.Data;

namespace WindowsFormsApplication1
{
class StartThread
{
      int StartNum;//单条线程的处理行数
      int StartSum;//线程的处理总行数
      string FFName;//方法名字（带类名）
      public StartThread(int startSum, int startNum)
      {
         StartSum = startSum;
         StartNum = startNum;
      }
      public void C1()
      {

         if (StartSum % StartNum == 0)
         {
               for (int i = 0; i < StartSum / StartNum; i++)
               {

                  Thread thr = new Thread(new ParameterizedThreadStart(C2));
                  thr.IsBackground=true;
                  thr.Start(i);
               }
         }
         else
         {
               for (int i = 0; i <Convert.ToInt32(StartSum / StartNum)+1; i++)
               {
                  Thread thr = new Thread(new ParameterizedThreadStart(C2));
                  thr.IsBackground = true;
                  thr.Start(i);
               }
         }
      }
      public void C2(object i)
      {


         Form1 fr = new Form1();
         int a = Convert.ToInt32(i);
         int b = Convert.ToInt32(StartSum / StartNum);
         if (a == Convert.ToInt32(StartSum / StartNum))
         {
            fr.thread1(StartNum,a);

         }
         else
         {
            fr.thread2(a, StartSum % StartNum, StartNum, Dt);
         }
      }
}
}

//窗体
private void Form1_Load(object sender, EventArgs e)
      {
         dt.Columns.Add("Column6");
         dt.Columns.Add("C72");
         for (int i = 0; i < 109; i++)
         {
            DataRow dar = dt.NewRow();
            dar[0] = i;
            dar[1] = i;
            dt.Rows.Add(dar);
         }
         dataGridView1.DataSource = dt;
         StartThread th = new StartThread(109, 10);
         th.C1();
      }
public void  thread1(int h, int j )
      {
         int c = h * j;
         for (int i = 0; i < j; i++)
         {
            dataGridView1.Rows[c].Cells["C7"].Value = c;
            c++;
         }
      }
      public void thread2(int j,int a,int b)
      {
         int m = dt.Rows.Count;
         int c = j * b;
         for (int i = 0; i < a; i++)
         {
            dataGridView1.Rows[c].Cells["C7"].Value = c;
            c++;
         }
      }