C# NumericUpDown.Minimum属性代码示例

public void InstantiateMyNumericUpDown()
{
   // Create and initialize a NumericUpDown control.
   numericUpDown1 = new NumericUpDown();

   // Dock the control to the top of the form.
   numericUpDown1.Dock = System.Windows.Forms.DockStyle.Top;

   // Set the Minimum, Maximum, and initial Value.
   numericUpDown1.Value = 5;
   numericUpDown1.Maximum = 2500;
   numericUpDown1.Minimum = -100;
   
   // Add the NumericUpDown to the Form.
   Controls.Add(numericUpDown1);
}

// Check box to toggle decimal places to be displayed.
private void checkBox1_Click(Object sender,
                             EventArgs e)
{
   /* If DecimalPlaces is greater than 0, set them to 0 and round the 
      current Value; otherwise, set DecimalPlaces to 2 and change the 
      Increment to 0.25. */
   if (numericUpDown1.DecimalPlaces > 0)
   {
      numericUpDown1.DecimalPlaces = 0;
      numericUpDown1.Value = Decimal.Round(numericUpDown1.Value, 0);
   }
   else
   {
      numericUpDown1.DecimalPlaces = 2;
      numericUpDown1.Increment = 0.25M;
   }
}

// Check box to toggle thousands separators to be displayed.
private void checkBox2_Click(Object sender,
                             EventArgs e)
{   
   /* If ThousandsSeparator is true, set it to false; 
      otherwise, set it to true. */
   if (numericUpDown1.ThousandsSeparator)
   {
      numericUpDown1.ThousandsSeparator = false;
   }
   else
   {
      numericUpDown1.ThousandsSeparator = true;
   }
}

// Check box to toggle hexadecimal to be displayed.
private void checkBox3_Click(Object sender, 
                             EventArgs e)
{
   /* If Hexadecimal is true, set it to false; 
      otherwise, set it to true. */    
   if (numericUpDown1.Hexadecimal)
   {
      numericUpDown1.Hexadecimal = false;
   }
   else
   {
      numericUpDown1.Hexadecimal = true;
   }
}

//引入命名空间
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;

public class Form1 : Form
{

   private System.Windows.Forms.NumericUpDown yearUpDown;
   private System.Windows.Forms.Button calculateButton;
   public Form1() {
      InitializeComponent();
   }
   private void calculateButton_Click( object sender, EventArgs e )
   {
      Console.WriteLine(Convert.ToInt32( yearUpDown.Value ));
   } 
   private void InitializeComponent()
   {
      this.yearUpDown = new System.Windows.Forms.NumericUpDown();
      this.calculateButton = new System.Windows.Forms.Button();
      ((System.ComponentModel.ISupportInitialize)(this.yearUpDown)).BeginInit();
      this.SuspendLayout();

      this.yearUpDown.Location = new System.Drawing.Point(84, 97);
      this.yearUpDown.Maximum = new decimal(new int[] {
            10,
            0,
            0,
            0});
      this.yearUpDown.Minimum = new decimal(new int[] {
            1,
            0,
            0,
            0});
      this.yearUpDown.Name = "yearUpDown";
      this.yearUpDown.ReadOnly = true;
      this.yearUpDown.Size = new System.Drawing.Size(100, 20);
      this.yearUpDown.TabIndex = 5;
      this.yearUpDown.TextAlign = System.Windows.Forms.HorizontalAlignment.Right;
      this.yearUpDown.Value = new decimal(new int[] {
            1,
            0,
            0,
            0});
      this.calculateButton.Location = new System.Drawing.Point(196, 16);
      this.calculateButton.Size = new System.Drawing.Size(75, 23);
      this.calculateButton.Text = "Calculate";
      this.calculateButton.Click += new System.EventHandler(this.calculateButton_Click);

      this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 13F);
      this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
      this.ClientSize = new System.Drawing.Size(289, 288);
      this.Controls.Add(this.calculateButton);
      this.Controls.Add(this.yearUpDown);
      this.Text = "Interest Calculator";
      ((System.ComponentModel.ISupportInitialize)(this.yearUpDown)).EndInit();
      this.ResumeLayout(false);
      this.PerformLayout();

   }

  [STAThread]
  static void Main()
  {
    Application.EnableVisualStyles();
    Application.Run(new Form1());
  }

}