8 changed files with 343 additions and 16 deletions
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using Microsoft.Win32; |
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using System; |
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using System.Collections.Generic; |
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using System.Data; |
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using System.IO; |
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using System.Linq; |
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using System.Text; |
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using System.Threading.Tasks; |
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using System.Windows.Markup; |
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|
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namespace DyeingComputer.UserClass |
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{ |
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internal class CSV |
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{ |
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/// <summary>
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/// 将DataTable中数据写入到CSV文件中
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/// </summary>
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/// <param name="dt">提供保存数据的DataTable</param>
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/// <param name="strFormat">CSV的文件路径</param>
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public static void SaveCSV(DataTable dt,string strFormat) |
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{ |
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FileInfo fi = new FileInfo(strFormat); |
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if (!fi.Directory.Exists) |
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{ |
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fi.Directory.Create(); |
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} |
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FileStream fs = new FileStream(strFormat, System.IO.FileMode.Create, System.IO.FileAccess.Write); |
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//StreamWriter sw = new StreamWriter(fs, System.Text.Encoding.Default);
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StreamWriter sw = new StreamWriter(fs, System.Text.Encoding.UTF8); |
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string data = ""; |
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//写出列名称
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for (int i = 0; i < dt.Columns.Count; i++) |
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{ |
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data += dt.Columns[i].ColumnName.ToString(); |
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if (i < dt.Columns.Count - 1) |
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{ |
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data += ","; |
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} |
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} |
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sw.WriteLine(data); |
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//写出各行数据
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for (int i = 0; i < dt.Rows.Count; i++) |
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{ |
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data = ""; |
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for (int j = 0; j < dt.Columns.Count; j++) |
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{ |
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string str = dt.Rows[i][j].ToString(); |
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str = str.Replace("\"", "\"\"");//替换英文冒号 英文冒号需要换成两个冒号
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if (str.Contains(',') || str.Contains('"') |
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|| str.Contains('\r') || str.Contains('\n')) //含逗号 冒号 换行符的需要放到引号中
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{ |
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str = string.Format("\"{0}\"", str); |
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} |
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data += str; |
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if (j < dt.Columns.Count - 1) |
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{ |
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data += ","; |
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} |
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} |
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sw.WriteLine(data); |
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} |
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sw.Close(); fs.Close(); |
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} |
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#region CSV文件读取
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/// <summary>
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/// 将CSV文件的数据读取到DataTable中
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/// </summary>
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/// <param name="fileName">CSV文件路径</param>
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/// <returns>返回读取了CSV数据的DataTable</returns>
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public static DataTable OpenCSV(string filePath)//从csv读取数据返回table
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{ |
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System.Text.Encoding encoding = GetType(filePath); //Encoding.ASCII;//
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DataTable dt = new DataTable(); |
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System.IO.FileStream fs = new System.IO.FileStream(filePath, System.IO.FileMode.Open, System.IO.FileAccess.Read); |
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System.IO.StreamReader sr = new System.IO.StreamReader(fs, encoding); |
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//记录每次读取的一行记录
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string strLine = ""; |
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//记录每行记录中的各字段内容
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string[] aryLine = null; |
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string[] tableHead = null; |
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//标示列数
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int columnCount = 0; |
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//标示是否是读取的第一行
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bool IsFirst = true; |
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//逐行读取CSV中的数据
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int readCol = 0; |
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while ((strLine = sr.ReadLine()) != null) |
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{ |
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if (readCol > 0) |
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{ |
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if (IsFirst == true) |
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{ |
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tableHead = strLine.Split(','); |
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IsFirst = false; |
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columnCount = tableHead.Length; |
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//创建列
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for (int i = 0; i < columnCount; i++) |
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{ |
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DataColumn dc = new DataColumn(tableHead[i]); |
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dt.Columns.Add(dc); |
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} |
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} |
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else |
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{ |
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aryLine = strLine.Split(','); |
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DataRow dr = dt.NewRow(); |
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for (int j = 0; j < columnCount; j++) |
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{ |
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dr[j] = aryLine[j]; |
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} |
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dt.Rows.Add(dr); |
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} |
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} |
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readCol++; |
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} |
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if (aryLine != null && aryLine.Length > 0) |
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{ |
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dt.DefaultView.Sort = tableHead[0] + " " + "asc"; |
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} |
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sr.Close(); |
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fs.Close(); |
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return dt; |
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} |
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/// 给定文件的路径,读取文件的二进制数据,判断文件的编码类型
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/// <param name="FILE_NAME">文件路径</param>
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/// <returns>文件的编码类型</returns>
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public static System.Text.Encoding GetType(string FILE_NAME) |
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{ |
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System.IO.FileStream fs = new System.IO.FileStream(FILE_NAME, System.IO.FileMode.Open, |
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System.IO.FileAccess.Read); |
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System.Text.Encoding r = GetType(fs); |
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fs.Close(); |
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return r; |
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} |
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/// 通过给定的文件流,判断文件的编码类型
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/// <param name="fs">文件流</param>
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/// <returns>文件的编码类型</returns>
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public static System.Text.Encoding GetType(System.IO.FileStream fs) |
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{ |
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byte[] Unicode = new byte[] { 0xFF, 0xFE, 0x41 }; |
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byte[] UnicodeBIG = new byte[] { 0xFE, 0xFF, 0x00 }; |
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byte[] UTF8 = new byte[] { 0xEF, 0xBB, 0xBF }; //带BOM
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System.Text.Encoding reVal = System.Text.Encoding.Default; |
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System.IO.BinaryReader r = new System.IO.BinaryReader(fs, System.Text.Encoding.Default); |
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int i; |
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int.TryParse(fs.Length.ToString(), out i); |
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byte[] ss = r.ReadBytes(i); |
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if (IsUTF8Bytes(ss) || (ss[0] == 0xEF && ss[1] == 0xBB && ss[2] == 0xBF)) |
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{ |
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reVal = System.Text.Encoding.UTF8; |
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} |
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else if (ss[0] == 0xFE && ss[1] == 0xFF && ss[2] == 0x00) |
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{ |
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reVal = System.Text.Encoding.BigEndianUnicode; |
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} |
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else if (ss[0] == 0xFF && ss[1] == 0xFE && ss[2] == 0x41) |
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{ |
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reVal = System.Text.Encoding.Unicode; |
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} |
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r.Close(); |
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return reVal; |
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} |
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/// 判断是否是不带 BOM 的 UTF8 格式
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/// <param name="data"></param>
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/// <returns></returns>
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private static bool IsUTF8Bytes(byte[] data) |
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{ |
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int charByteCounter = 1; //计算当前正分析的字符应还有的字节数
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byte curByte; //当前分析的字节.
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for (int i = 0; i < data.Length; i++) |
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{ |
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curByte = data[i]; |
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if (charByteCounter == 1) |
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{ |
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if (curByte >= 0x80) |
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{ |
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//判断当前
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while (((curByte <<= 1) & 0x80) != 0) |
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{ |
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charByteCounter++; |
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} |
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//标记位首位若为非0 则至少以2个1开始 如:110XXXXX...........1111110X
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if (charByteCounter == 1 || charByteCounter > 6) |
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{ |
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return false; |
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} |
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} |
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} |
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else |
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{ |
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//若是UTF-8 此时第一位必须为1
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if ((curByte & 0xC0) != 0x80) |
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{ |
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return false; |
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} |
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charByteCounter--; |
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} |
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} |
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if (charByteCounter > 1) |
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{ |
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throw new Exception("非预期的byte格式"); |
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} |
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return true; |
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} |
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#endregion
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} |
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} |
@ -0,0 +1,31 @@ |
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using LiveChartsCore.SkiaSharpView; |
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using LiveChartsCore; |
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using System; |
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using System.Collections.Generic; |
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using System.Data; |
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using System.Linq; |
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using System.Text; |
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using System.Threading.Tasks; |
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using static DyeingComputer.UserClass.SqliteHelper; |
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using CommunityToolkit.Mvvm.ComponentModel; |
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namespace DyeingComputer.ViewModel |
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{ |
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public class CurveDiagramViewModel : ObservableObject |
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{ |
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public ISeries[] Series { get; set; } = new ISeries[] |
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{ |
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new LineSeries<double> |
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{ |
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Values = new double[] { 2, 1, 3, 5, 3, 4, 6 }, |
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Fill = null |
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} |
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}; |
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public CurveDiagramViewModel() |
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{ |
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} |
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} |
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} |
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