How to convert string type into int type in C# form program?

Add a string and an integer directly, and the result is still a string.

To convert the string in the label into an integer, and then add 1 to get 3, the process is as follows:

//Initialize the label value

Label 1。 text = " 1.2 "；

int IValue = 0；

//can be converted into integers normally.

if (Int32。 TryParse (label 1. Text.Trim()，out IValue))

{

++ IValue；

Label 1。 Text = IValue。 ToString()；

}

//Can't be converted to integer normally and report an error.

other

{

Label 1。 Text = "The value in the label label is" +Label 1. Text+ "and cannot be converted into an integer!" ;

}

Label is displayed as the value in Label is 1.2, and cannot be converted into an integer!

Initialize the label to 2 as follows

Label 1。 Text = " 2

The label is displayed as 3.