To convert a string to a long, use the Long.parse method in C# −
Firstly, set a string −
string str = "6987646475767";
Now, convert it to long −
long.Parse(str);
Here is the complete code −
Example
using System;
using System.Linq;
class Demo {
static void Main() {
string str = "6987646475767";
long res = long.Parse(str);
Console.WriteLine(res);
}
}Output
6987646475767