如何格式化日期时间 [英] how to format Date time

问题描述

我在字符串变量中具有任何格式的Date.
我想格式化/转换成给定的格式.
我写了以下一行....

ConvertedValue = Convert.ToDateTime(CValue.Trim()).ToString(StrWizFormat.Trim());

或

ConvertedValue = ConvertFieldDatetimeFormat(CValue.Trim(), StrWizFormat.Trim()).ToString(StrWizFormat.Trim());

I have Date in any format in a string variable .
I want to format/ convert in given format.
I have written following line....

ConvertedValue = Convert.ToDateTime(CValue.Trim()).ToString(StrWizFormat.Trim());

OR

ConvertedValue = ConvertFieldDatetimeFormat(CValue.Trim(), StrWizFormat.Trim()).ToString(StrWizFormat.Trim());

private static DateTime ConvertFieldDatetimeFormat(string DValue, string DFormat)
    {
        System.Globalization.DateTimeFormatInfo dateInfo = new System.Globalization.DateTimeFormatInfo();
        dateInfo.ShortDatePattern = DFormat;
        DateTime CnvDtValue;

        if (DValue.Trim() != string.Empty)
        {
            CnvDtValue = Convert.ToDateTime(DValue.Trim(), dateInfo);
        }
        else
        {
            CnvDtValue = new DateTime();
        }
        return CnvDtValue;
    }

但在某些情况下出现错误....
请修改我的功能....
或建议我，如果您有最佳技巧....


致以问候
Manoj

but I am getting error in some case ....
Please modify my function ....
or suggest me, if you have best trick ....


With Regards
Manoj

推荐答案

如果要转换的特定格式，请使用TryParseExact:

If you have a specific format to to convert, use TryParseExact:

DateTime dt;
string date = "31/12/2011";
if (DateTime.TryParseExact(date, "dd/MM/yyyy", CultureInfo.InvariantCulture, DateTimeStyles.None, out dt))
    {
    }

在此链接中查看C#示例，
http://msdn.microsoft.com/zh-我们/library/system.convert.todatetime%28v=vs.71%29.aspx [

Look into the C# example in this link,
http://msdn.microsoft.com/en-us/library/system.convert.todatetime%28v=vs.71%29.aspx[^]

你好，

请参考
http://msdn.microsoft.com/en-us/library/az4se3k1.aspx [ ^ ]
另请参阅
http://msdn.microsoft.com/en-us/library/8kb3ddd4.aspx [ ^ ]

hello,

please refer
http://msdn.microsoft.com/en-us/library/az4se3k1.aspx[^]
refer this also
http://msdn.microsoft.com/en-us/library/8kb3ddd4.aspx[^]

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