MS Excel吃掉了我的脑袋。它将数字随机转换为科学记数法格式。当我以制表符分隔格式保存的文件加载到SQL Server时，这会导致问题。我知道我可以提供一个格式文件并做很多花哨的东西。但是，让我说我做不到。
是否有一个循环遍历所有单元格的宏，如果单元格中的数字是科学记数法格式，那么它会将其转换为数字格式吗？
说：
Input: spaces signify different cells.
1.00E13 egalitarian
宏之后的输出：
10000000000000 egalitarian
我在Excel 2007中尝试这个。
答案 0 :(得分：1)
我写了一个简单的C＃程序来解决这个问题。希望它有用。
输入文件所在的目录（假设文件采用.txt格式）。
将转换文件吐出的输出目录。
列分隔符。
using System;
using System.Text.RegularExpressions;
using System.IO;
using System.Text;
using System.Threading;
namespace ConvertToNumber
{
class Program
{
private static string ToLongString(double input)
{
string str = input.ToString().ToUpper();
// If string representation was collapsed from scientific notation, just return it:
if (!str.Contains("E"))
return str;
var positive = true;
if (input < 0)
{
positive = false;
}
string sep = Thread.CurrentThread.CurrentCulture.NumberFormat.NumberDecimalSeparator;
char decSeparator = sep.ToCharArray()[0];
string[] exponentParts = str.Split('E');
string[] decimalParts = exponentParts[0].Split(decSeparator);
// Fix missing decimal point:
if (decimalParts.Length == 1)
decimalParts = new string[] { exponentParts[0], "0" };
int exponentValue = int.Parse(exponentParts[1]);
string newNumber = decimalParts[0].Replace("-","").
Replace("+","") + decimalParts[1];
string result;
if (exponentValue > 0)
{
if(positive)
result =
newNumber +
GetZeros(exponentValue - decimalParts[1].Length);
else
result = "-"+
newNumber +
GetZeros(exponentValue - decimalParts[1].Length);
}
else // Negative exponent
{
if(positive)
result =
"0" +
decSeparator +
GetZeros(exponentValue + decimalParts[0].Replace("-", "").
Replace("+", "").Length) + newNumber;
else
result =
"-0" +
decSeparator +
GetZeros(exponentValue + decimalParts[0].Replace("-", "").
Replace("+", "").Length) + newNumber;
result = result.TrimEnd('0');
}
float temp = 0.00F;
if (float.TryParse(result, out temp))
{
return result;
}
throw new Exception();
}
private static string GetZeros(int zeroCount)
{
if (zeroCount < 0)
zeroCount = Math.Abs(zeroCount);
StringBuilder sb = new StringBuilder();
for (int i = 0; i < zeroCount; i++) sb.Append("0");
return sb.ToString();
}
static void Main(string[] args)
{
//Get Input Directory.
Console.WriteLine(@"Enter the Input Directory");
var readLine = Console.ReadLine();
if (readLine == null)
{
Console.WriteLine(@"Enter the input path properly.");
return;
}
var pathToInputDirectory = readLine.Trim();
//Get Output Directory.
Console.WriteLine(@"Enter the Output Directory");
readLine = Console.ReadLine();
if (readLine == null)
{
Console.WriteLine(@"Enter the output path properly.");
return;
}
var pathToOutputDirectory = readLine.Trim();
//Get Delimiter.
Console.WriteLine("Enter the delimiter;");
var columnDelimiter = (char) Console.Read();
//Loop over all files in the directory.
foreach (var inputFileName in Directory.GetFiles(pathToInputDirectory))
{
var outputFileWithouthNumbersInScientificNotation = string.Empty;
Console.WriteLine("Started operation on File : " + inputFileName);
if (File.Exists(inputFileName))
{
// Read the file
using (var file = new StreamReader(inputFileName))
{
string line;
while ((line = file.ReadLine()) != null)
{
String[] columns = line.Split(columnDelimiter);
var duplicateLine = string.Empty;
int lengthOfColumns = columns.Length;
int counter = 1;
foreach (var column in columns)
{
var columnDuplicate = column;
try
{
if (Regex.IsMatch(columnDuplicate.Trim(),
@"^[+-]?[0-9]+(\.[0-9]+)?[E]([+-]?[0-9]+)$",
RegexOptions.IgnoreCase))
{
Console.WriteLine("Regular expression matched for this :" + column);
columnDuplicate = ToLongString(Double.Parse
(column,
System.Globalization.NumberStyles.Float));
Console.WriteLine("Converted this no in scientific notation " +
"" + column + " to this number " +
columnDuplicate);
}
}
catch (Exception)
{
}
duplicateLine = duplicateLine + columnDuplicate;
if (counter != lengthOfColumns)
{
duplicateLine = duplicateLine + columnDelimiter.ToString();
}
counter++;
}
duplicateLine = duplicateLine + Environment.NewLine;
outputFileWithouthNumbersInScientificNotation = outputFileWithouthNumbersInScientificNotation + duplicateLine;
}
file.Close();
}
var outputFilePathWithoutNumbersInScientificNotation
= Path.Combine(pathToOutputDirectory, Path.GetFileName(inputFileName));
//Create the directory if it does not exist.
if (!Directory.Exists(pathToOutputDirectory))
Directory.CreateDirectory(pathToOutputDirectory);
using (var outputFile =
new StreamWriter(outputFilePathWithoutNumbersInScientificNotation))
{
outputFile.Write(outputFileWithouthNumbersInScientificNotation);
outputFile.Close();
}
Console.WriteLine("The transformed file is here :" +
outputFilePathWithoutNumbersInScientificNotation);
}
}
}
}
}
对于我们无法在MS Excel中打开的大文件，这种方法非常有效。
答案 1 :(得分：0)
谢谢彼得。 我将您的原创作品更新为： 1）接受输入文件或路径 2）每读取1000行后才写出处理语句 3）在处理过程中将变换后的行写入输出文件，这样就不会有大的字符串 4）在最后添加一个读取密钥，以便控制台在调试时不会自动退出
using System;
using System.Text.RegularExpressions;
using System.IO;
using System.Text;
using System.Threading;
namespace ConvertScientificToLong
{
class Program
{
private static string ToLongString(double input)
{
string str = input.ToString().ToUpper();
// If string representation was collapsed from scientific notation, just return it:
if (!str.Contains("E"))
return str;
var positive = true;
if (input < 0)
{
positive = false;
}
string sep = Thread.CurrentThread.CurrentCulture.NumberFormat.NumberDecimalSeparator;
char decSeparator = sep.ToCharArray()[0];
string[] exponentParts = str.Split('E');
string[] decimalParts = exponentParts[0].Split(decSeparator);
// Fix missing decimal point:
if (decimalParts.Length == 1)
decimalParts = new string[] { exponentParts[0], "0" };
int exponentValue = int.Parse(exponentParts[1]);
string newNumber = decimalParts[0].Replace("-", "").
Replace("+", "") + decimalParts[1];
string result;
if (exponentValue > 0)
{
if (positive)
result =
newNumber +
GetZeros(exponentValue - decimalParts[1].Length);
else
result = "-" +
newNumber +
GetZeros(exponentValue - decimalParts[1].Length);
}
else // Negative exponent
{
if (positive)
result =
"0" +
decSeparator +
GetZeros(exponentValue + decimalParts[0].Replace("-", "").
Replace("+", "").Length) + newNumber;
else
result =
"-0" +
decSeparator +
GetZeros(exponentValue + decimalParts[0].Replace("-", "").
Replace("+", "").Length) + newNumber;
result = result.TrimEnd('0');
}
float temp = 0.00F;
if (float.TryParse(result, out temp))
{
return result;
}
throw new Exception();
}
private static string GetZeros(int zeroCount)
{
if (zeroCount < 0)
zeroCount = Math.Abs(zeroCount);
StringBuilder sb = new StringBuilder();
for (int i = 0; i < zeroCount; i++) sb.Append("0");
return sb.ToString();
}
static void Main(string[] args)
{
//Get Input Directory.
Console.WriteLine(@"Enter the Input Directory or File Path");
var readLine = Console.ReadLine();
if (readLine == null)
{
Console.WriteLine(@"Enter the input path properly.");
return;
}
var pathToInputDirectory = readLine.Trim();
//Get Output Directory.
Console.WriteLine(@"Enter the Output Directory");
readLine = Console.ReadLine();
if (readLine == null)
{
Console.WriteLine(@"Enter the output path properly.");
return;
}
var pathToOutputDirectory = readLine.Trim();
//Get Delimiter.
Console.WriteLine("Enter the delimiter;");
var columnDelimiter = (char)Console.Read();
string[] inputFiles = null;
if (File.Exists(pathToInputDirectory))
{
inputFiles = new String[]{pathToInputDirectory};
}
else
{
inputFiles = Directory.GetFiles(pathToInputDirectory);
}
//Loop over all files in the directory.
foreach (var inputFileName in inputFiles)
{
var outputFileWithouthNumbersInScientificNotation = string.Empty;
Console.WriteLine("Started operation on File : " + inputFileName);
if (File.Exists(inputFileName))
{
string outputFilePathWithoutNumbersInScientificNotation
= Path.Combine(pathToOutputDirectory, Path.GetFileName(inputFileName));
//Create the directory if it does not exist.
if (!Directory.Exists(pathToOutputDirectory))
Directory.CreateDirectory(pathToOutputDirectory);
using (var outputFile =
new StreamWriter(outputFilePathWithoutNumbersInScientificNotation))
{
// Read the file
using (StreamReader file = new StreamReader(inputFileName))
{
string line;
int lineCount = 0;
while ((line = file.ReadLine()) != null)
{
String[] columns = line.Split(columnDelimiter);
var duplicateLine = string.Empty;
int lengthOfColumns = columns.Length;
int counter = 1;
foreach (var column in columns)
{
var columnDuplicate = column;
try
{
if (Regex.IsMatch(columnDuplicate.Trim(),
@"^[+-]?[0-9]+(\.[0-9]+)?[E]([+-]?[0-9]+)$",
RegexOptions.IgnoreCase))
{
//Console.WriteLine("Regular expression matched for this :" + column);
columnDuplicate = ToLongString(Double.Parse
(column,
System.Globalization.NumberStyles.Float));
//Console.WriteLine("Converted this no in scientific notation " +
// "" + column + " to this number " +
// columnDuplicate);
if (lineCount % 1000 == 0)
{
Console.WriteLine(string.Format("processed {0} lines. still going....", lineCount));
}
}
}
catch (Exception)
{
}
duplicateLine = duplicateLine + columnDuplicate;
if (counter != lengthOfColumns)
{
duplicateLine = duplicateLine + columnDelimiter.ToString();
}
counter++;
}
outputFile.WriteLine(duplicateLine);
lineCount++;
}
}
}
Console.WriteLine("The transformed file is here :" +
outputFilePathWithoutNumbersInScientificNotation);
Console.WriteLine(@"Hit any key to exit");
Console.ReadKey();
}
}
}
}
}
答案 2 :(得分：0)
更简单的方法是将其另存为.csv文件。然后，而不是只打开文件 - 您转到数据选项卡并选择“从文本”，以便您可以获得对话框。这样，您可以使用科学记数法将该列标识为文本以消除该格式。导入文件，然后您可以将其重新格式化为数字或任何您想要的。