我试图转换1200.00为decimal,但Decimal.Parse()删除.00.我尝试了一些不同的方法,但它总是会删除.00,除非我提供的分数不同于0.
string value = "1200.00";
var convertDecimal = Decimal.Parse(value , NumberStyles.AllowThousands
| NumberStyles.AllowDecimalPoint | NumberStyles.AllowCurrencySymbol);
var convertDecimal = Convert.ToDecimal(value);
var convertDecimal = Decimal.Parse(value,
NumberStyles.AllowDecimalPoint, CultureInfo.InvariantCulture);
如何将string包含转换1200.00为decimal包含1200.00？
我想阅读excel 2003(不能改变它来自第三方)和列表或词典中的组数据(我没有哪个好),例如下面(Excel格式)书籍数据[excel中的第一行和第一列]第二行(无记录)代码,名称,IBN [第三行(第二列,第三列)Aust [第四行,第一列] UX test1 34 [第五行(第二列,第三列)....... ...
书籍数据
Code Name IBN
奥斯特
UX test1 34
UZ test2 345
UN test3 5654
我们
UX name1 567
TG nam2 123
UM name3 234
我正在使用以下代码阅读excel数据(来自Google的一些帮助)
string filename = @"C:\\" + "Book1.xls";
string connectionString = "Provider=Microsoft.Jet.OLEDB.4.0;" +
"Data Source=" + filename + ";" +
"Extended Properties=Excel 8.0;";
OleDbDataAdapter dataAdapter = new OleDbDataAdapter("SELECT * FROM [Sheet1$]", connectionString);
DataSet myDataSet = new DataSet();
dataAdapter.Fill(myDataSet, "BookInfo");
DataTable dataTable = myDataSet.Tables["BookInfo"];
var rows = …我比较两个xml,我必须打印差异.如何使用LINQ实现此目的.我知道我可以使用Microsoft的XML diff补丁,但我更喜欢使用LINQ.如果您有任何其他想法,我会实现它
//第一个Xml
<Books>
<book>
<id="20504" image="C01" name="C# in Depth">
</book>
<book>
<id="20505" image="C02" name="ASP.NET">
</book>
<book>
<id="20506" image="C03" name="LINQ in Action ">
</book>
<book>
<id="20507" image="C04" name="Architecting Applications">
</book>
</Books>
//第二个Xml
<Books>
<book>
<id="20504" image="C011" name="C# in Depth">
</book>
<book>
<id="20505" image="C02" name="ASP.NET 2.0">
</book>
<book>
<id="20506" image="C03" name="LINQ in Action ">
</book>
<book>
<id="20508" image="C04" name="Architecting Applications">
</book>
</Books>
我想比较这两个xml和打印结果.
Issued Issue Type IssueInFirst IssueInSecond
1 image is different C01 C011
2 name is different ASP.NET ASP.NET 2.0 …我想在C#中替换以下行.用替换单词替换第一个单词.我必须从最后一个单词中删除'['和']'.
string oldString = "200 abc def abc [a18943]"
输出应该是
string newString="a18943 abc def abc";
谢谢
我只想在内部括号中替换逗号.
例如
Progamming languages (Java, C#, Perl)
至
Progamming languages (Java or C# or Perl)
但它不应该在下面的字符串中重复逗号
Progamming languages Java, C#, Perl
码
它会正确替换,但不匹配.
String test = "Progamming languages (Java, C#, Perl)";
String test1 = "Progamming languages Java, C#, Perl"
String foo = replaceComma(test);
String foo1 = replaceComma(test1);
private static String replaceComma(String test)
{
String patternStr= "\\((?:.*)(,)(?:.*)\\)";
Pattern pattern = Pattern.compile(patternStr);
Matcher matcher= pattern.matcher(test);
if(matcher.matches())
{
return test.replaceAll("(,)", " or ");
}
return test;
}
UPDATE
String.replaceAll("(,)", " or "); 当你有像这样的字符串时将无法工作 …
如何从sys.tables中选择表,其中表名不包含特殊字(传入参数).
我想选择所有包含单词'customer'的表,而不是那些以'old'结尾的表.
TableName在DB中
customer1
customer2
customer3
customerold1
customerold2
输出通缉
customer1
customer2
customer3
string[] arr = { "abcdefXXX872358", "abcdef200X8XXX58", "abcdef200X872359", "6T1XXXXXXXXXXXX11", "7AbcdeHA30XXX541", "7AbcdeHA30XXX691" };
我怎样才能从上面得到不同的数字,前6个字符必须是不同的结果
abcdefXXX872358
6T1XXXXXXXXXXXX11
7AbcdeHA30XXX541
我尝试这样的事情
var dist = (from c in arr
select c).Select(a => a.Substring(0, 5)).Distinct();
这给了我前5个字符,但我想要整个字符串
下面的代码有效,但我想使用yield或更改算法来优化代码.
public IEnumerable<Book> GetAuthorWithBookName(string keyword)
{
var bookAndAuthorList = new List<Book>();
List<Author> AuthorNameList = getAuthorName(keyword);
foreach (var author in AuthorNameList)
{
XmlNode booksNames = getBook(author);
XDocument XDOCbooksNames = XDocument.Parse(booksNames.OuterXml);
var bookNameList = (
from x1 in XDOCbooksNames.Descendants("Books")
select x1.Elements("book").Select(g => g.Attribute("name").Value))
.ToList();
foreach (var bookName in bookNameList)
{
bookAndAuthorList.Add(new Book()
{
authorName = author.authorName,
bookName = bookName
});
}
}
return bookAndAuthorList;
}
public class Book
{
public string authorName { get; set; }
public string bookName { get; set; …