为什么我收到字符串未被识别为有效的日期时间。 [英] Why I am getting string was not recognized as a valid datetime.

问题描述

我有一个带有jquery日期选择器的文本框txtChqDate。如果日期少于今天的日期（2016-11-10）被选中而不是它的罚款但是日期大于今天日期说（2016-11-26）被选中而不是它显示错误字符串未被识别为有效日期时间。



我尝试过：



我用过的代码：



DateTime chqdate = Convert.ToDateTime（txtChqDate.Text）;

DateTime transdate = Convert.ToDateTime（txtTransDate.Text）;

if（chqdate> transdate）

{

string script =alert（'Check Date未到达'）;;

ClientScript.RegisterClientScriptBlock（this.GetType（），Alert;, script，true）;

txtChqDate.Text =

txtAccNo.Focus（）;

}

其他

{

txtpaidto。焦点（）;

}

解决方案

它与你的本地日期设置有关...

Convert.ToDateTime（）相当于DateTime.Parse（，CultureInfo.CurrentCulture），所以很明显，YYYY-MM-DD不适合你的当地......它接缝是YYYY-DD-MM，因为它试图将26解释为月份失败...

使用 DateTime.ParseExact [ ^ ]方法，格式正确！

试试这个

 DateTime chqdate = DateTime.ParseExact（txtChqDate.Text，  yyyy-MM-dd，CultureInfo.InvariantCulture）; 

参考

DateTime.TryParseExact方法（系统） [ ^ ]

DateTime.ParseExact Method（String，String，IFormatProvider） ）（系统） [ ^ ]

I have a textbox txtChqDate having jquery date picker.If date less than todays date(2016-11-10) is selected than its fine but date greater than todays date say(2016-11-26) is selected than it shows error "String was not recognized as a valid DateTime".

What I have tried:

Code I have used:

DateTime chqdate = Convert.ToDateTime(txtChqDate.Text);
DateTime transdate = Convert.ToDateTime(txtTransDate.Text);
if (chqdate >transdate)
{
string script ="alert('Cheque Date Not Reached');";
ClientScript.RegisterClientScriptBlock(this.GetType(), "Alert";, script, true);
txtChqDate.Text =""
txtAccNo.Focus();
}
else
{
txtpaidto.Focus();
}

解决方案

It has something to do with your local date settings...
Convert.ToDateTime("") is equivalent to DateTime.Parse("", CultureInfo.CurrentCulture), so it is obvious that the YYYY-MM-DD does not fit your local... It seams to be YYYY-DD-MM, as it try to interpret 26 as month an fails...
Use DateTime.ParseExact[^] method with the proper format!

try this

DateTime chqdate = DateTime.ParseExact(txtChqDate.Text, "yyyy-MM-dd", CultureInfo.InvariantCulture);

refer
DateTime.TryParseExact Method (System)[^]
DateTime.ParseExact Method (String, String, IFormatProvider) (System)[^]

这篇关于为什么我收到字符串未被识别为有效的日期时间。的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！