使代码块在c#winform中多次运行

我正在用c#编写一种简单的编程语言，允许用户在文本框中输入命令并在屏幕上绘制形状，我编写了一种方法来实现这一点。我遇到的麻烦是，该方法一次只能绘制一个形状，即使我给它两个命令

public void RunProgram()
    {
        try
        {
            string[] spilt = cp.UserCMD(textInput).Split('(', ')', ','); // spilts on brackets to get numbs inside of brackets
            foreach (string cmd in spilt) //spilt string on brackets and comma 
            {
                if (cp.ValidCommand(textInput) == true) //checks if command is valid
                {
                    if (cp.FunctionCMD(textInput) == "reset".ToLower())
                    {
                        x = 0; 
                        y = 0;
                    }
                    else if (cp.FunctionCMD(textInput) == "moveTo".ToLower())
                    {
                        x = Int32.Parse(spilt[1]); //gets x and y from 2nd and 3rd element of spilt array. 1st item is command
                        y = Int32.Parse(spilt[2]);

                    }
                    else if (cmdInput == "clear".ToLower())
                    {
                        ClearForm();
                    }
                }

                if (cp.FunctionCMD(textInput) == "circle".ToLower())
                {
                    radius = Int32.Parse(spilt[1]); ////gets radius from 2nd element of spilt array. 1st item is command
                }
                if (cp.FunctionCMD(textInput) == "rectangle".ToLower())
                {
                    width = Int32.Parse(spilt[1]); //gets width and height from 2nd and 3rd element of spilt array. 1st item is command
                    height = Int32.Parse(spilt[2]);
                }
                if (cp.FunctionCMD(textInput) == "triangle".ToLower())
                {
                    side1 = Int32.Parse(spilt[1]); //gets sides 2nd and 3rd and 4th element of spilt array. 1st item is command
                    side2 = Int32.Parse(spilt[2]);
                    side3 = Int32.Parse(spilt[3]);

                }

            }

            Graphics g;
            g = Graphics.FromImage(drawOutput);
            Pen pen = new Pen(Color.Black, 5);

            if (cp.ValidCommand(textInput) == true) // check if command is valid 
            {
                if (cp.FunctionCMD(textInput) == "circle".ToLower())
                {
                    circle.drawCircle(radius, pen, g, x, y); // draw circle using x and y from spilt array
                    setImage(g);

                }
                if (cp.FunctionCMD(textInput) == "rectangle".ToLower())
                {
                    rect.drawRectangle(width, height, pen, g, x, y); // draw rect from width and height from spilt array
                    setImage(g);
                }
                if (cp.FunctionCMD(textInput) == "triangle".ToLower())
                {
                    tri.drawTriangle(side1, side2, side3, pen, g); // draw triangle from 3 different sides from spilt array
                    setImage(g);
                }

            }
            else
            {
                MessageBox.Show("You have a syntax error, Please check your command"); //if command is not valid then throw 
            }
        }
        catch (IndexOutOfRangeException e1)
        {
            MessageBox.Show("You have a syntax error, Please check your parameters \nError: \n" + e1); // displays messagebox if correct parameters are not given
        }

    }

上面的代码就是正在调用的方法。代码是当我在文本框中的行中循环时

if (cmdInput == "run".ToLower())
        {
            foreach (var line in InputTxtBox.Lines)
            {
                System.Diagnostics.Debug.WriteLine(line);

                RunProgram();
            }
        }

        if (cmdInput != "run".ToLower())
        {
            textInput = CMDBox.Text;
            RunProgram();
        }

如果用户键入： 圆圈（100） 矩形（100100）

---

预期的结果应该是在屏幕上画一个圆和一个矩形，但目前只画一个圆，而不是矩形。我认为问题在于每个循环的问题。首先确保文本框已启用多行

foreach（inputXtbox.Lines.Count（）中的var line）

应循环查看文本框中输入的行数

 foreach (var line in InputTxtBox.Lines.Count())
            {
                System.Diagnostics.Debug.WriteLine(line);

                RunProgram();
            }

---

它是在画第一个形状还是第二个形状？它只是在画第一个形状在你的

foreach

中，你的

line

是如何分配给你的

RunProgram

方法中引用的每个命令的？不是，我的印象是foreach会对文本框中的每一行运行该方法，该命令来自不同的方法