C#Excel数据读取_c# 读取excel

C#Excel数据读取

数据写入

 	string fileDir;
    string fileNameExl;
    FileStream dataFile;


 			//string data = "1\t2";//换列
            //string data = "1\n2";//换行
            fileDir = "D:\\Model\\";
            fileNameExl = fileDir + "数据输出" + ".xls";
            dataFile = new FileStream(fileNameExl, FileMode.Append, FileAccess.Write);

            string data = "Row" + "\t" + "Column" + "\t" + "FuzhuDianNum" + "\n";
            for (int i = 0; i < FuzhuxianColumn.Count; i++)
            {
                data = data + Convert.ToDouble(FuzhuxianRow[i]).ToString() + "\t" + Convert.ToDouble(FuzhuxianColumn[i]).ToString() + "\t" + Convert.ToInt32(FuzhuDianNum[i]).ToString() + "\n";
            }

            StreamWriter writer = new StreamWriter(dataFile);
            writer.Write(data);
            writer.Flush();
            writer.Close();
            StringBuilder sb = new StringBuilder("");

            sb.Append(Environment.NewLine);
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24

数据读取

			fileDir = "D:\\Model\\";
            fileNameExl = fileDir + "数据输出" + ".xls";
            //dataFile = new FileStream(fileNameExl, FileMode.Append, FileAccess.Read);
            StreamReader reader = new StreamReader(fileNameExl, Encoding.Default);
            string str = null;//先声明一个字符串
            String d="";
            while ((str = reader.ReadLine()) != null)//判断读取到的字符串是为null，如果为null，说明已经读取到文件末尾
            {
                d = reader.ReadToEnd();
                
                MessageBox.Show(d.ToString());
            }
            d = System.Text.RegularExpressions.Regex.Replace(d, @"\s+", ",");  //替换字符必须在原字符串中没有出现
            string[] arr = d.Split(',');
            //将读取的字符串以空格分割，读取记录
             for (int i = 0; i < arr.Length-1; i++)
            {
                MessageBox.Show(arr[i].ToString());
                if ((i + 1) % 3 == 0)
                {
                    ExcelPointNum_Read.Add(arr[i]);//编号
                }
                if (i % 3 == 0)
                {
                    ExcelRow_Read.Add(arr[i]);//Row
                }
                if ((i - 1) % 3 == 0)
                {
                    ExcelColumn_Read.Add(arr[i]);//Column
                }
            }
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31