基于c#的简易逆波兰式算法的计算器，包含平方、开方、三角函数、log、加减乘除，写出窗体程序代码，以及各控件属性。

以下是基于C#编写的简易逆波兰式计算器窗体程序。该程序支持平方、开方、三角函数、log、加减乘除等操作。

在窗体中添加以下控件：

- 一个Label控件用于显示当前表达式。
- 一个TextBox控件用于接收用户输入的表达式。
- 一个Button控件，点击该按钮后将会计算表达式并显示结果。
- 一个ComboBox控件，用于选择需要执行的操作，比如平方、开方、三角函数等。
- 一个ListBox控件，用于显示计算结果。

以下是该窗体程序的代码：

using System;
using System.Collections.Generic;
using System.Windows.Forms;

namespace Calculator
{
    public partial class Form1 : Form
    {
        // Create a stack to store operands
        private Stack<double> stack = new Stack<double>();

        public Form1()
        {
            InitializeComponent();
        }

        private void buttonCalculate_Click(object sender, EventArgs e)
        {
            // Get the input expression from the textbox
            string input = textBoxExpression.Text;

            // Append the selected operation to the input expression
            string operation = comboBoxOperation.Text;
            if (!string.IsNullOrEmpty(operation))
            {
                input += " " + operation;
            }

            // Convert the input expression to a list of tokens
            List<string> tokens = new List<string>(input.Split());

            // Clear the stack
            stack.Clear();

            // Evaluate the expression
            foreach (string token in tokens)
            {
                double operand;
                if (double.TryParse(token, out operand))
                {
                    // If the token is a number, push it onto the stack
                    stack.Push(operand);
                }
                else
                {
                    // If the token is an operator or function, pop one or two operands from the stack and apply the operator or function
                    double operand2 = 0;
                    double operand1 = 0;
                    double result = 0;

                    switch (token)
                    {
                        case "+":
                            operand2 = stack.Pop();
                            operand1 = stack.Pop();
                            result = operand1 + operand2;
                            break;
                        case "-":
                            operand2 = stack.Pop();
                            operand1 = stack.Pop();
                            result = operand1 - operand2;
                            break;
                        case "*":
                            operand2 = stack.Pop();
                            operand1 = stack.Pop();
                            result = operand1 * operand2;
                            break;
                        case "/":
                            operand2 = stack.Pop();
                            operand1 = stack.Pop();
                            result = operand1 / operand2;
                            break;
                        case "^":
                            operand2 = stack.Pop();
                            operand1 = stack.Pop();
                            result = Math.Pow(operand1, operand2);
                            break;
                        case "sqrt":
                            operand1 = stack.Pop();
                            result = Math.Sqrt(operand1);
                            break;
                        case "sin":
                            operand1 = stack.Pop();
                            result = Math.Sin(operand1);
                            break;
                        case "cos":
                            operand1 = stack.Pop();
                            result = Math.Cos(operand1);
                            break;
                        case "tan":
                            operand1 = stack.Pop();
                            result = Math.Tan(operand1);
                            break;
                        case "log":
                            operand1 = stack.Pop();
                            result = Math.Log10(operand1);
                            break;
                        default:
                            MessageBox.Show("Invalid operator or function: " + token);
                            return;
                    }

                    // Push the result back onto the stack
                    stack.Push(result);
                }
            }

            // The final result is on the top of the stack
            double finalResult = stack.Pop();

            // Display the result in the listbox
            listBoxResults.Items.Add(input + " = " + finalResult);

            // Clear the input textbox
            textBoxExpression.Clear();

            // Set the focus back to the textbox
            textBoxExpression.Focus();
        }
    }
}

在窗体设计器中，需要对各控件进行如下属性设置：

- Label控件：AutoSize = true, Text = “Expression:”
- TextBox控件：Dock = Top, Multiline = true, Height = 100
- Button控件：Dock = Top, Text = “Calculate”, Height = 30
- ComboBox控件：Dock = Top, Items = “”, “sqrt”, “sin”, “cos”, “tan”, “log”, “^”, Text = “”
- ListBox控件：Dock = Fill

这样就可以实现一个基于C#的简易逆波兰式计算器窗体程序了。