如何在达到特定角色之前获取角色？

Question

我想在"<img"标记之前只获取数据。

我的代码如下：我如何完成它？

string body = row[2].ToString();
int num;
num = body.IndexOf("<img");

Answer 1

// first find the index of your starting point
int start = body.IndexOf("<img");
// then find the index of your ending point
int end = body.IndexOf("\"", start);
// then retrieve that portion of the string
string goods = body.Substring(start, end - start);

Answer 2

 string body = body.Substring(0, body.IndexOf("<img"));

Answer 3

string interesting = body.Substring(0, num);