Difemeg写道：

total.text = date_dif.text * TxtQuantity.text ;

尝试这样的事情：

 total.text =（ double  .Parse（date_dif.text）*  double  .Parse（TxtQuantity.text））。ToString（）; 

祝你好运，

Edo uote>

试试这个与你需要的相似的例子：

 DateTime a =  new  DateTime（ 2008 ， 01 ， 02 ， 06 ， 30 ， 00 跨度>）; 
 DateTime b =  new  DateTime（ 2008 ， 01 ， 03 ， 06 ， 30 ， 00 ）; 
 TimeSpan持续时间= b  -  a; 
 String  result = TimeSpan.FromTicks（duration.Ticks *  5 ）。ToString（）; 

希望这会有所帮助！

非常感谢它非常好用

 total.text =（ double  .Parse （date_dif.text）*  double  .Parse（TxtQuantity.text））。ToString（）; 

但是，要添加货币，如

can some one please help me out
I have a date value

date_dif.text = ((Convert.ToDateTime(date1.Text) - Convert.ToDateTime(date2.Text)).Days).ToString();

I want to multiply the difference with a figure from
example
total.text = date_dif.text * TxtQuantity.text;

when ever i do that it shows this error
Operator '*' cannot be applied to operands of type strings and strings Please how do i resolve the issue

thanks in advance

Difemeg wrote:

total.text = date_dif.text * TxtQuantity.text;

Try something like this:

total.text = (double.Parse(date_dif.text) * double.Parse(TxtQuantity.text)).ToString();

Good luck,
Edo

Try this example which is similar to what you needed :

DateTime a = new DateTime(2008, 01, 02, 06, 30, 00);
            DateTime b = new DateTime(2008, 01, 03, 06, 30, 00);
            TimeSpan duration = b - a;
            String result = TimeSpan.FromTicks(duration.Ticks * 5).ToString();

Hope this helps!

thank you very much It works perfectly well

total.text = (double.Parse(date_dif.text) * double.Parse(TxtQuantity.text)).ToString();

However, to add currency to it like