输入字符串格式不正确。如何解决? [英] Input string was not in a correct format.how to solve?
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问题描述
有谁知道?
输入字符串格式不正确如何解决?
Can anyone know?
Input string was not in a correct format.how to solve?
protected void totalprice()
{
int quantity = int.Parse("txtquantity");
float price =float.Parse("price");
float totalprice = float.Parse("totalPrice");
totalprice=quantity * price;
}
推荐答案
希望txtquantity,price,totalPrice是多变的
hope txtquantity,price,totalPrice are variabeles
int quantity = int.Parse(txtquantity);
float price =float.Parse(price);
float totalprice = float.Parse(totalPrice);
您可能意味着以下内容(其中价格
,totalprice
和txtquantity
是对象):
You probably mean the following (whereprice
,totalprice
andtxtquantity
are objects):
protected void totalprice()
{
int quantity = int.Parse(txtquantity.Text);
float price =float.Parse(price);
float totalprice = float.Parse(totalPrice);
totalprice=quantity * price;
}
您需要在C#中学习类型转换。看看这些:
http: //msdn.microsoft.com/en-us/library/ms173105.aspx [ ^ ]
http://msdn.microsoft.com/en-us/library/ms173105%28v=vs.80%29.aspx [ ^ ]
希望它有所帮助:)
You need to learn the Type casting in C#. Have a look at these:
http://msdn.microsoft.com/en-us/library/ms173105.aspx[^]
http://msdn.microsoft.com/en-us/library/ms173105%28v=vs.80%29.aspx[^]
hope it helps :)
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