Convert base 2 to base 10

Question

I'm trying to convert base 2 to base 10, but I keep getting:

"Value was either too large or too small for an Int64".

I use this code:

string number1 = Convert.ToString(Convert.ToInt64(numberBin1, 10));    

It shows the error even with reasonable values, like: 000111110100111101010000

Edit: Fixed thanks to Johnny and JSteward

Answer 1

在第二个参数ToInt64方法是fromBase ，你的情况应该是2。

long number = Convert.ToInt64("000111110100111101010000", 2));