Question

textBox3.Text = textBox1.Text + textBox2.Text; 怎么将Textbox内的string类型装换为int类型？

Answer 1

C++的话 有 atoi()函数，MSDN中：int atoi( const char *string );
Parameters
string
String to be converted.
Return Values
Each function returns the double, int, __int64, or long value produced by interpreting the input characters as a number.

If the input cannot be converted to a value of that type, the return value is 0 (for atoi and _atoi64), 0L (for atol), or 0.0 (for atof).

The return value is undefined in case of overflow.

直接调用就好了

Answer 2

int.Parse(textBox1.Text) (C#)