winform 计算器控件ui

WinForm的计算器控件UI通常会包含数字按钮、运算符按钮、清除按钮和等号按钮。以下是一个简单的示例：

1. 首先，添加一个文本框控件用于显示计算结果：

private System.Windows.Forms.TextBox txtResult;

2. 接下来，添加数字按钮和运算符按钮。这里我们使用Button控件，并设置其Text属性为相应的数字或运算符：

private System.Windows.Forms.Button btn0;
private System.Windows.Forms.Button btn1;
private System.Windows.Forms.Button btn2;
private System.Windows.Forms.Button btn3;
private System.Windows.Forms.Button btn4;
private System.Windows.Forms.Button btn5;
private System.Windows.Forms.Button btn6;
private System.Windows.Forms.Button btn7;
private System.Windows.Forms.Button btn8;
private System.Windows.Forms.Button btn9;
private System.Windows.Forms.Button btnAdd;
private System.Windows.Forms.Button btnSubtract;
private System.Windows.Forms.Button btnMultiply;
private System.Windows.Forms.Button btnDivide;

3. 添加清除按钮和等号按钮：

private System.Windows.Forms.Button btnClear;
private System.Windows.Forms.Button btnEqual;

4. 将这些控件添加到窗体上，并设置它们的位置和大小：

this.txtResult.Location = new System.Drawing.Point(12, 12);
this.txtResult.Size = new System.Drawing.Size(260, 50);

this.btnClear.Location = new System.Drawing.Point(12, 78);
this.btnClear.Size = new System.Drawing.Size(50, 50);
this.btnClear.Text = "C";

this.btnDivide.Location = new System.Drawing.Point(196, 78);
this.btnDivide.Size = new System.Drawing.Size(50, 50);
this.btnDivide.Text = "/";

// 其他按钮的位置和大小类似

5. 最后，添加事件处理程序来实现这个计算器的功能。例如，当用户按下数字按钮时，我们需要将该数字添加到文本框中：

private void btn1_Click(object sender, EventArgs e)
{
    this.txtResult.Text += "1";
}

其他按钮的事件处理程序的实现方式类似，可以根据需要进行修改。完整的示例代码如下：

private System.Windows.Forms.TextBox txtResult;
private System.Windows.Forms.Button btn0;
private System.Windows.Forms.Button btn1;
private System.Windows.Forms.Button btn2;
private System.Windows.Forms.Button btn3;
private System.Windows.Forms.Button btn4;
private System.Windows.Forms.Button btn5;
private System.Windows.Forms.Button btn6;
private System.Windows.Forms.Button btn7;
private System.Windows.Forms.Button btn8;
private System.Windows.Forms.Button btn9;
private System.Windows.Forms.Button btnAdd;
private System.Windows.Forms.Button btnSubtract;
private System.Windows.Forms.Button btnMultiply;
private System.Windows.Forms.Button btnDivide;
private System.Windows.Forms.Button btnClear;
private System.Windows.Forms.Button btnEqual;

public Form1()
{
    InitializeComponent();

    this.txtResult = new System.Windows.Forms.TextBox();
    this.btn0 = new System.Windows.Forms.Button();
    this.btn1 = new System.Windows.Forms.Button();
    this.btn2 = new System.Windows.Forms.Button();
    this.btn3 = new System.Windows.Forms.Button();
    this.btn4 = new System.Windows.Forms.Button();
    this.btn5 = new System.Windows.Forms.Button();
    this.btn6 = new System.Windows.Forms.Button();
    this.btn7 = new System.Windows.Forms.Button();
    this.btn8 = new System.Windows.Forms.Button();
    this.btn9 = new System.Windows.Forms.Button();
    this.btnAdd = new System.Windows.Forms.Button();
    this.btnSubtract = new System.Windows.Forms.Button();
    this.btnMultiply = new System.Windows.Forms.Button();
    this.btnDivide = new System.Windows.Forms.Button();
    this.btnClear = new System.Windows.Forms.Button();
    this.btnEqual = new System.Windows.Forms.Button();

    this.txtResult.Location = new System.Drawing.Point(12, 12);
    this.txtResult.Size = new System.Drawing.Size(260, 50);

    this.btnClear.Location = new System.Drawing.Point(12, 78);
    this.btnClear.Size = new System.Drawing.Size(50, 50);
    this.btnClear.Text = "C";

    this.btnDivide.Location = new System.Drawing.Point(196, 78);
    this.btnDivide.Size = new System.Drawing.Size(50, 50);
    this.btnDivide.Text = "/";

    // 其他按钮的位置和大小类似

    this.btn1.Click += new System.EventHandler(this.btn1_Click);
    this.btn2.Click += new System.EventHandler(this.btn2_Click);
    this.btn3.Click += new System.EventHandler(this.btn3_Click);
    this.btn4.Click += new System.EventHandler(this.btn4_Click);
    this.btn5.Click += new System.EventHandler(this.btn5_Click);
    this.btn6.Click += new System.EventHandler(this.btn6_Click);
    this.btn7.Click += new System.EventHandler(this.btn7_Click);
    this.btn8.Click += new System.EventHandler(this.btn8_Click);
    this.btn9.Click += new System.EventHandler(this.btn9_Click);
    this.btn0.Click += new System.EventHandler(this.btn0_Click);
    this.btnAdd.Click += new System.EventHandler(this.btnAdd_Click);
    this.btnSubtract.Click += new System.EventHandler(this.btnSubtract_Click);
    this.btnMultiply.Click += new System.EventHandler(this.btnMultiply_Click);
    this.btnDivide.Click += new System.EventHandler(this.btnDivide_Click);
    this.btnClear.Click += new System.EventHandler(this.btnClear_Click);
    this.btnEqual.Click += new System.EventHandler(this.btnEqual_Click);

    this.Controls.Add(this.txtResult);
    this.Controls.Add(this.btn0);
    this.Controls.Add(this.btn1);
    this.Controls.Add(this.btn2);
    this.Controls.Add(this.btn3);
    this.Controls.Add(this.btn4);
    this.Controls.Add(this.btn5);
    this.Controls.Add(this.btn6);
    this.Controls.Add(this.btn7);
    this.Controls.Add(this.btn8);
    this.Controls.Add(this.btn9);
    this.Controls.Add(this.btnAdd);
    this.Controls.Add(this.btnSubtract);
    this.Controls.Add(this.btnMultiply);
    this.Controls.Add(this.btnDivide);
    this.Controls.Add(this.btnClear);
    this.Controls.Add(this.btnEqual);
}

private void btn1_Click(object sender, EventArgs e)
{
    this.txtResult.Text += "1";
}

private void btn2_Click(object sender, EventArgs e)
{
    this.txtResult.Text += "2";
}

private void btn3_Click(object sender, EventArgs e)
{
    this.txtResult.Text += "3";
}

private void btn4_Click(object sender, EventArgs e)
{
    this.txtResult.Text += "4";
}

private void btn5_Click(object sender, EventArgs e)
{
    this.txtResult.Text += "5";
}

private void btn6_Click(object sender, EventArgs e)
{
    this.txtResult.Text += "6";
}

private void btn7_Click(object sender, EventArgs e)
{
    this.txtResult.Text += "7";
}

private void btn8_Click(object sender, EventArgs e)
{
    this.txtResult.Text += "8";
}

private void btn9_Click(object sender, EventArgs e)
{
    this.txtResult.Text += "9";
}

private void btn0_Click(object sender, EventArgs e)
{
    this.txtResult.Text += "0";
}

private void btnAdd_Click(object sender, EventArgs e)
{
    this.txtResult.Text += "+";
}

private void btnSubtract_Click(object sender, EventArgs e)
{
    this.txtResult.Text += "-";
}

private void btnMultiply_Click(object sender, EventArgs e)
{
    this.txtResult.Text += "*";
}

private void btnDivide_Click(object sender, EventArgs e)
{
    this.txtResult.Text += "/";
}

private void btnClear_Click(object sender, EventArgs e)
{
    this.txtResult.Text = "";
}

private void btnEqual_Click(object sender, EventArgs e)
{
    try
    {
        DataTable dt = new DataTable();
        var v = dt.Compute(this.txtResult.Text, "");
        this.txtResult.Text = v.ToString();
    }
    catch(Exception ex)
    {
        this.txtResult.Text = "Error";
    }
}