小编Kja*_*tan的帖子

private decimal? _income;

public SomeClassName()
{        
    // First way
    _income = new decimal(45000.75)

    // Second way  
    _income = Convert.ToDecimal(45000.75)
}

以上哪两种实例更好？为什么？

我正在学习android我尝试了下面的代码,但它给了我错误请给我建议,我怎么能比较两个edittext文本.

if((edt1.getText().toString() && 
    edt4.getText().toString() && 
    edt7.getText().toString)=="X")

我正在用jquery-ui制作一些滑块,我有一个问题如何我可以做以下事情:

我有这个HTML代码:

<div class="slider range-slide">
    <b>A range slider:</b>
    <span class="amount"></span>
    <div class="slide"></div> 
</div> 

这是js:

$(".range-slide").each(function () {
    var $this = $(this);
    $(".slide", $this).slider({
        values: [30, 60],
        min: 0,
        max: 100,
        range: true,
        slide: function (event, ui) {
            $("span.amount", $this).html("" + ui.values[0] + 
                                         " - " + ui.values[1]);
        }
    });
    $(".range-slide span.amount").html("" + $(".slide").slider("values", 0) + 
                                       " - " + $(".slide").slider("values", 1));
});   

Everyting工作正常,但我怎么能这样做:

<div class="slider range-slide">
    <b>A range slider:</b>
    <span class="amount"></span>
    <div class="slide" value="30,60" max="100" min="10"></div> 
</div> 

class Foo{
        public string FooText { get; set; }
        public DateTime DateCreated { get; set; }
        public DateTime DateModified { get; set; }
        public ICollection<Bar> Bars{ get; set; }
}

class Bar{
        public Foo Foo { get; set; }
        public Language Language { get; set; }
        public string FooText { get; set; } 
        public DateTime DateCreated { get; set; }
        public DateTime DateModified { get; set; }
}

我有一个Foo的集合.我希望用语言"Foo and Bar"获得语言名称"English"

fooCollection.Where(x => 
                    x.Translations.Where(q =>
                                         q.Language.LanguageName == "English"));

这失败了. Can …

声明：

(definitions != null && definitions.Where(key => key.asset_id != null &&
                                          key.asset_id == item).FirstOrDefault() != null

投掷：

集合被修改，枚举操作可能无法执行

如何解决这个问题？

if (definitions != null 
    && definitions
         .Where(key => key.asset_id != null && key.asset_id == item)
         .FirstOrDefault() != null)
{
    CurrentDuration = definitions
                        .Where(key => key.asset_id != null && key.asset_id == item)
                        .FirstOrDefault().duration;
}

我想转换Minutes为"小时:分钟:秒".

如何使用c#实现这一目标.

我试过这个

driveHours = (totalHours.balanceDriveMinutes / 60).ToString("00") + " Hrs. "
 + (totalHours.balanceDriveMinutes % 60 ).ToString("00") + " Min." + 
(totalHours.balanceDriveMinutes /3600).ToString("00") + " Sec."; 

但它似乎不正确.

我是初学者，我想问如何使这段代码更简单更短感谢所有回复

public static bool SelectedSingleAcc(SpecialForms.AccountManager am)
{
    //checkbox1
    if (am.selectedCB1.Checked == true 
        && am.selectedCB2.Checked == false  
        && am.selectedCB3.Checked == false  
        && am.selectedCB4.Checked == false  
        && am.selectedCB5.Checked == false  
        && am.selectedCB6.Checked == false  
        && am.selectedCB7.Checked == false  
        && am.selectedCB8.Checked == false) return true;
    //checkbox2
    if (am.selectedCB1.Checked == false  
        && am.selectedCB2.Checked == true  
        && am.selectedCB3.Checked == false  
        && am.selectedCB4.Checked == false  
        && am.selectedCB5.Checked == false  
        && am.selectedCB6.Checked == false  
        && am.selectedCB7.Checked == false  
        && am.selectedCB8.Checked == false) return true;
    //checkbox3
    if (am.selectedCB1.Checked …

我想写一些c#代码,我在字符串中找到一个特定的单词,并从字符串中删除它而不删除整个字符串.

我尝试了这个但是它不起作用:

if (openFile.ShowDialog() == System.Windows.Forms.DialogResult.OK)
{
    // Read the files
    for (int i = 0; i < openFile.FileNames.Count(); i++ )
    {
        if (openFile.FileNames[i].Contains("Unknown Album"))
        {
            openFile.FileNames[i] = 
                openFile.FileNames[i].Replace("Unknown Album", string.Empty);
        }
    }
}

我试图从一堆随机字符或单词中获取一个单词,例如,我想检查dog以下字符串中是否存在该单词:

string animal = "MyNewdogIsVeryPlayful";

我该如何管理？