C#常用代码

//载入资源字符串
string s1 = Properties.Resources.id1;  

//列表框示例
            listView1.Columns.Add("name");
            listView1.Columns.Add("age");
            listView1.Columns.Add("rollno");
            ListViewItem firstrecord = new ListViewItem("hope");//这个是第一行第一列
            firstrecord.SubItems.Add("22");//第一行第二列
            firstrecord.SubItems.Add("1001");//第一行第三列
            ListViewItem secondrecord = new ListViewItem("basil");//这个是第二行第一列
            secondrecord.SubItems.Add("23");//第二行第二列
            secondrecord.SubItems.Add("1002");//第二行第三列
            listView1.Items.Add(firstrecord);//把第一行添加上
            listView1.Items.Add(secondrecord);//把第二行添加上

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//打开文件对话框，并且把图片框换入新图片

 OpenFileDialog ofdPic = new OpenFileDialog();
            ofdPic.Filter = "JPG(*.JPG;*.JPEG);gif文件(*.GIF)|*.jpg;*.jpeg;*.gif";
            ofdPic.FilterIndex = 1;
            ofdPic.FileName = "";
            if (ofdPic.ShowDialog() == DialogResult.OK)
            {
                MessageBox.Show("loadimage");
               
                string sPicPaht = ofdPic.FileName.ToString();
                pictureBox1.LoadAsync(sPicPaht);

            }

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//状态栏写入内容

编写其Tick事件为
p rivate void timer1_Tick(object sender, EventArgs e)
{
this.toolStripStatusLabel3.Text = "系统当前时间：" + DateTime.Now.ToString("yyyy-MM-dd hh:mm:ss");
}

在Form的Load事件中 对timer1进行相关设置
p rivate void MainForm_Load(object sender, EventArgs e)
{
this.toolStripStatusLabel3.Text = "系统当前时间：" + DateTime.Now.ToString("yyyy-MM-dd hh:mm:ss");
this.timer1.Interval=1000;
this.timer1.Start();
}

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//静态类型File的用法
System.IO.File.WriteAllText("D:/index/mx.htm", htmltext, System.Text.Encoding.GetEncoding("GB2312"));
File.WriteAllLines(fName, s1, System.Text.Encoding.GetEncoding("utf-8"));

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//save as 对话框

 SaveFileDialog saveFileDialog = new SaveFileDialog();
            saveFileDialog.Filter = "文本文件|*.txt";
            saveFileDialog.FilterIndex = 2;
            //saveFileDialog.RestoreDirectory = true;
            if (saveFileDialog.ShowDialog() == DialogResult.OK)
            {
               
                    string fName = saveFileDialog.FileName;
                   
                    //File.WriteAllBytes(fName, richTextBox1.Text, System.Text.Encoding.GetEncoding("GB2312"));
                    string[] s1 = new string[1];
                    s1[0] = richTextBox1.Text;
                    File.WriteAllLines(fName, s1, System.Text.Encoding.GetEncoding("utf-8"));
                  
                   
              
            }

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//树形框用法
 TreeNode RootNode = new TreeNode();
            TreeNode SonNode1 = new TreeNode("儿子1");
            TreeNode SonNode2 = new TreeNode("儿子2");

            RootNode.Text = "报表统计";

            RootNode.Nodes.Add("节点1");
            RootNode.Nodes.Add("节点2");
            RootNode.Nodes.Add("节点3");

            SonNode1.Nodes.Add("节点11");
            SonNode1.Nodes.Add("节点12");

            SonNode2.Nodes.Add("节点21");
            SonNode2.Nodes.Add("节点22");

            RootNode.Nodes.Add(SonNode1);
            RootNode.Nodes.Add(SonNode2);
            treeView1.Nodes.Add(RootNode);

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 //String 拆分

String[] s1 = new String[] {"----" };
            linktxt_array = fieldStr1.linktxt.Split(s1, StringSplitOptions.RemoveEmptyEntries);