关于记事本的问题

Question

记事本编辑菜单项的查找用C#怎么实现啊，大虾们，帮帮忙啊！界面做好了，不知道该怎么实现啊！

Answer 1

int s = this.textBox1.SelectionStart;
            if (this.textBox1.SelectedText == "要查找的内容")
            {
                s++;
            }
            int result = this.textBox1.Text.IndexOf("要查找的内容", s);
            if (result >= 0)
            {
                this.textBox1.SelectionStart = s;
                this.textBox1.SelectionLength = "要查找的内容".Length;
                this.textBox1.ScrollToCaret();
            }
            else
            {
                MessageBox.Show("没找着");
            }

Answer 2

修正一下:
int s = this.textBox1.SelectionStart;
            if (this.textBox1.SelectedText == "要查找的内容")
            {
                s++;
            }
            int result = this.textBox1.Text.IndexOf("要查找的内容", s);
            if (result >= 0)
            {
                this.textBox1.SelectionStart = result;
                this.textBox1.SelectionLength = "要查找的内容".Length;
                this.textBox1.ScrollToCaret();
            }
            else
            {
                MessageBox.Show("没找着");
            }