字符串问题 请教各位了

Question

有个string="0000000000";的字符串 
我想要把第6位的0替换成1  请问下各位高手

Answer 1

这问题还真不怎么会，
想个笨办法。
    protected void Page_Load(object sender, EventArgs e)
    {
        string tt="0000000000";
        char[] u = tt.ToCharArray();
        string temp = string.Empty;
        for (int i = 0; i < tt.Length; i++)
        {
            if (i != 6)
            {
                temp = temp + u[i].ToString();
            }
            else
            {
                temp = temp + "1";
            }
        }
        Response.Write(temp);
       
    }

Answer 2

笨办法：            string c="0000000000";
            string b = "";
            for (int i = 0; i < c.Length;i++ )
            {
                if (i == 5)
                {
                    b = b + "1";
                }
                else
                {
                    b = b + c[i];
                }
            }
            Response.Write(b);

Answer 3

string str = "0000000000";
str = str.Substring(0, 5) + "1" + str.Substring(6, str.Length - 7);

Answer 4

            string c = "00000000";
            c = c.Remove(5,1);
            c = c.Insert(5, "1");
            Response.Write(c);

Answer 5

我觉得这种方法最好.string num = "0000000000";
num = num.Substring(0, 5) + "1" + num.Substring(6, num.Length - 7);

Answer 6

  string c="0000000000";
            string b = "";
            for (int i = 0; i < c.Length;i++ )
            {
                if (i == 5)
                {
                    b = b + "1";
                }
                else
                {
                    b = b + c[i];
                }
            }
            Response.Write(b);
 结果：0000010000  string c="0000000000";
  string d = c.Substring(0, 5) + "1" + c.Substring(6, c.Length-7);
            Response.Write(d);结果：000001000少了一个零！怎么回事呢？

Answer 7

//正确写法
string d = c.Substring(0, 5) + "1" + c.Substring(6, c.Length-6);