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C# program to convert binary string to Integer
Use the Convert.ToInt32 class to fulfill your purpose of converting a binary string to an integer.
Let’s say our binary string is −
string str = "1001";
Now each char is parsed −
try { //Parse each char of the passed string val = Int32.Parse(str1[i].ToString()); if (val == 1) result += (int) Math.Pow(2, str1.Length - 1 - i); else if (val > 1) throw new Exception("Invalid!"); } catch { throw new Exception("Invalid!"); }
Check the above for each character in the passed string i.e. “100” using a for a loop. Find the length of the string using the length() method −
str1.Length
Example
You can try to run the following code to convert a binary string to an integer in C#.
using System; class Program { static void Main() { string str = "1001"; Console.WriteLine("Integer:"+ConvertClass.Convert(str)); } } public static class ConvertClass { public static int Convert(string str1) { if (str1 == "") throw new Exception("Invalid input"); int val = 0, res = 0; for (int i = 0; i < str1.Length; i++) { try { val = Int32.Parse(str1[i].ToString()); if (val == 1) res += (int)Math.Pow(2, str1.Length - 1 - i); else if (val > 1) throw new Exception("Invalid!"); } catch { throw new Exception("Invalid!"); } } return res; } }
Output
Integer:9
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