有人可以为我提供有关C#鼠标的一些信息吗?

大家好.我必须为一个学校项目做一个SearchWord游戏.我制作了所有矩阵，带有单词的表格，随机字符...我需要一些有关鼠标选择单词的帮助.我有每个单词的第一个字符的位置信息，最后一个位置和方向N，S，E，W，NE，NW，SE，SW.有人可以说出如何使鼠标向上和向下移动的功能吗?

我尝试过的事情:

Hi all. I have to do for a school project a SearchWord game. I make all the matrix, the table with words,random chars...i need some help with the mouse select word. I have information of position for the first char off every word, the last position and the direction N,S,E,W,NE,NW,SE,SW. Can some one say how to make a function for mouse upp and mouse down?

What I have tried:

private void pictureBox1_MouseUp(object sender, MouseEventArgs e)
        {
            press= false;
        }

        private void pictureBox1_MouseDown(object sender, MouseEventArgs e)
        {
           
                press = true;
                
            }
        }