Use C # To obtain a continuous sequence with the sum of several Integers of 500 (web interview questions)

I accidentally saw this computing question on the Internet. I wrote it in my spare time. I want to write more easily.

1 private void button#click (object sender, EventArgs e)
2 {
3 // first, find the maximum number of Integers to add. Obviously starting from 1
4 int a = 0;
5 int bignum = 0;
6 for (int I = 1; I <= 500; I ++)
7 {
8 if (a <= 500)
9 {
10 a = a + I;
11 bignum = I;
12}
13}
14 string s = "";
15
16 for (int j = 1; j <= 500; j ++)
17 {
18 int c = 0;
19 int d = j;
20 for (int k = 1; k <= bignum; k ++)
21 {
22 c = j + k;
23 d + = c;
24 if (d = 500)
25 {
26 s = j. ToString () + "-" + k. ToString () + ",";
27}
28}
29}
30 MessageBox. Show (s );
31}