标签:计算 ++ nim datarow https index AC dex threading
参考: http://www.cnblogs.com/xpvincent/archive/2013/08/19/3268001.html
当有大量数据需要计算、显示在界面或者调用sleep函数时,容易导致界面卡死,可以采用多线程加委托的方法解决;
using System; using System.Collections.Generic; using System.ComponentModel; using System.Data; using System.Drawing; using System.Linq; using System.Text; using System.Windows.Forms; using System.Threading; namespace WindowsFormsApplication3 { public partial class Form1 : Form { DataTable table; int currentIndex = 0; int max = 10000; public Form1() { InitializeComponent(); } private void button1_Click(object sender, EventArgs e) { buttonOK.Enabled = false; Thread thread = new Thread(new ThreadStart(LoadData)); thread.IsBackground = true; thread.Start(); progressBar1.Minimum = 0; progressBar1.Maximum = max; } private void LoadData() { SetLabelText("数据加载中..."); currentIndex = 0; table = new DataTable(); table.Columns.Add("id"); table.Columns.Add("name"); table.Columns.Add("age"); while (currentIndex < max) { SetLabelText(string.Format("当前行:{0},剩余量:{1},完成比例:{2}%", currentIndex, max - currentIndex, (Convert.ToDecimal(currentIndex) / Convert.ToDecimal(max) * 100).ToString())); SetPbValue(currentIndex); DataRow dr = table.NewRow(); dr["id"] = currentIndex; dr["name"] = "张三"; dr["age"] = currentIndex + 5; table.Rows.Add(dr); currentIndex++; } SetDgvDataSource(table); SetLabelText("数据加载完成"); this.BeginInvoke(new MethodInvoker(delegate() { buttonOK.Enabled = true; })); } delegate void labDelegate(string str); private void SetLabelText(string str) { if (textBox1.InvokeRequired) { Invoke(new labDelegate(SetLabelText), new string[] { str }); } else { textBox1.Text = str; } } delegate void dgvDelegate(DataTable table); private void SetDgvDataSource(DataTable table) { if (dataGridView1.InvokeRequired) { Invoke(new dgvDelegate(SetDgvDataSource), new object[] { table }); } else { dataGridView1.DataSource = table; } } private delegate void pbDelegate(int value); private void SetPbValue(int value) { if (progressBar1.InvokeRequired) { Invoke(new pbDelegate(SetPbValue), new object[] { value }); } else { progressBar1.Value = value; } } } }
标签:计算 ++ nim datarow https index AC dex threading
原文地址:https://www.cnblogs.com/runningRain/p/9215233.html