Question

C# 点击按钮弹出OpenFileDialog找到并选择txt文件打开，txt内容将会分别显示到textBox，dataGridView

txt文件可以存在于任意盘中，相似txt文件有多个

TXT内容如下:
! NAME ! LENTH 0! DATE 2014-09-27! FREQ 1880! COUNT 1368! GAIN 0 ! PLANE H! MAIN M ! POLARIZE +45 ! PORT 1180.00 -66.63 -66.54 -180.00 -66.54 -66.54-180.00 -66.54 -66.61-179.99 -66.61 -66.69-179.98 -66.69 -66.69

要求显示效果如下：

===============初学C#，本人菜鸟一个，希望大神们给出具体代码，最好带上注释。我好学习学习

Answer 1

using System;
using System.Text;
using System.Drawing;
using System.Windows.Forms;
using System.IO;

namespace txt_datagriview
{
    public partial class Form1 : Form
    {
        private string fileName;

        public Form1()
        {
            InitializeComponent();
        }

        private void button1_Click(object sender, EventArgs e)
        {
            OpenFileDialog ofd = new OpenFileDialog(); //new一个方法
            ofd.Filter = "(*.txt)|*.txt";//删选、设定文件显示类型
            ofd.ShowDialog(); //显示打开文件的窗口
            fileName = ofd.FileName; //获得选择的文件路径
            Read_Settxt();
        }
 
        private void Read_Settxt()
        {
            if (File.Exists(fileName))   //如果文件存在
            {
                StreamReader sr = new StreamReader(fileName, Encoding.Default);//读文件
                string s;
                int i = 0;
                while ((s = sr.ReadLine()) != null && s != string.Empty)      //一行行读，如果读取内空不为空      {
                    i++;//一行一行读
                    if(i==1)              
                    {
                        textBox1.Text = s;
                    }
                    else if (i == 2)
                    {
                        textBox2.Text = s;
                    }
                    else if (i == 3)
                    {
                        textBox3.Text = s;
                    }
                    else if (i == 4)
                    {
                        textBox4.Text = s;
                    }
                    else if (i == 5)
                    {
                        textBox5.Text = s;
                    }
                    else if (i == 6)
                    {
                        textBox6.Text = s;
                    }
                    else if (i == 7)
                    {
                        textBox7.Text = s;
                    }
                    else if (i == 8)
                    {
                        textBox8.Text = s;
                    }
                    else if (i == 9)
                    {
                        textBox9.Text = s;
                    }
                    else if (i == 10)
                    {
                        textBox10.Text = s;
                    }
                    else if (i > 10)
                    {
                        string[] ch = s.Split(new char[] { ' ' }, StringSplitOptions.RemoveEmptyEntries);//遇到空格截取，得到数组。
                        dataGridView1.Rows.Add(ch[0], ch[1], ch[2]);//截得的数组添加到 dataGridView1，此处文本是三列，列数要固定，多少列根据情况修改。行数可以不固定
                    }
                    else
                    {
                        MessageBox.Show("不能读取此数据格式的数据");
                    }
                }
            }
        }

        private void dataGridView1_RowPostPaint(object sender, DataGridViewRowPostPaintEventArgs e)     //datagridview 自动添加行号，可以不要。
        {
            Rectangle rectangle = new Rectangle(e.RowBounds.Location.X,
           e.RowBounds.Location.Y,
           dataGridView1.RowHeadersWidth - 4,
           e.RowBounds.Height);

            TextRenderer.DrawText(e.Graphics, (e.RowIndex + 1).ToString(),
            dataGridView1.RowHeadersDefaultCellStyle.Font,
            rectangle,
            dataGridView1.RowHeadersDefaultCellStyle.ForeColor,
            TextFormatFlags.VerticalCenter | TextFormatFlags.Right);
        }
    }
}