C# strings and char arrays

[Dave C]

I'm a C/C++ guy trying to learn C# and I'm converting some of my C code into C# for learning.

In the following snippet of code, the char array temp[] gets initialized as nulls '\0'. If I turn the array into a string object using the string constructor, the nulls become char data instead of the terminator I'd expect. Subsequent string operations don't go as planned...

            char[] temp = new char[30]; // initialized as nulls '\0'
            int z;

            for(z=0; z<10; z++)   temp[z] = '0'; // temp should be "0000000000"

            string strout = new string(temp); // create string from array of 0's
            strout += "12345"; // should now be "000000000012345"

However this is what strout comes up as: "0000000000\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\012345"
How do I make those nulls get treated as a string terminator?

Thanks