Is CheckBox checked
using System; using System.Drawing; using System.Collections; using System.ComponentModel; using System.Windows.Forms; using System.Data; public class Form1 : System.Windows.Forms.Form { private System.Windows.Forms.GroupBox groupBox1; private System.Windows.Forms.CheckBox checkBox1; private System.Windows.Forms.CheckBox checkBox2; private System.Windows.Forms.CheckBox checkBox3; private System.Windows.Forms.RadioButton radioButton1; private System.Windows.Forms.RadioButton radioButton2; private System.Windows.Forms.RadioButton radioButton3; private System.Windows.Forms.Button button1; private System.ComponentModel.Container components = null; public Form1() { InitializeComponent(); } private void InitializeComponent() { this.groupBox1 = new System.Windows.Forms.GroupBox(); this.checkBox1 = new System.Windows.Forms.CheckBox(); this.checkBox2 = new System.Windows.Forms.CheckBox(); this.checkBox3 = new System.Windows.Forms.CheckBox(); this.radioButton1 = new System.Windows.Forms.RadioButton(); this.radioButton2 = new System.Windows.Forms.RadioButton(); this.radioButton3 = new System.Windows.Forms.RadioButton(); this.button1 = new System.Windows.Forms.Button(); this.groupBox1.SuspendLayout(); this.SuspendLayout(); // // groupBox1 // this.groupBox1.Controls.AddRange(new System.Windows.Forms.Control[] { this.radioButton1, this.radioButton2, this.radioButton3}); this.groupBox1.Location = new System.Drawing.Point(8, 120); this.groupBox1.Name = "groupBox1"; this.groupBox1.Size = new System.Drawing.Size(120, 144); this.groupBox1.TabIndex = 0; this.groupBox1.TabStop = false; this.groupBox1.Text = "Color"; this.groupBox1.Enter += new System.EventHandler(this.groupBox1_Enter); // // checkBox1 // this.checkBox1.Location = new System.Drawing.Point(8, 8); this.checkBox1.Name = "checkBox1"; this.checkBox1.TabIndex = 1; this.checkBox1.Text = "Circle"; // // checkBox2 // this.checkBox2.Location = new System.Drawing.Point(8, 40); this.checkBox2.Name = "checkBox2"; this.checkBox2.TabIndex = 2; this.checkBox2.Text = "Rectangle"; // // checkBox3 // this.checkBox3.Location = new System.Drawing.Point(8, 72); this.checkBox3.Name = "checkBox3"; this.checkBox3.TabIndex = 3; this.checkBox3.Text = "String"; // // radioButton1 // this.radioButton1.Location = new System.Drawing.Point(8, 32); this.radioButton1.Name = "radioButton1"; this.radioButton1.TabIndex = 4; this.radioButton1.Text = "Red"; this.radioButton1.CheckedChanged += new System.EventHandler(this.radioButton1_CheckedChanged); // // radioButton2 // this.radioButton2.Location = new System.Drawing.Point(8, 64); this.radioButton2.Name = "radioButton2"; this.radioButton2.TabIndex = 5; this.radioButton2.Text = "Green"; // // radioButton3 // this.radioButton3.Location = new System.Drawing.Point(8, 96); this.radioButton3.Name = "radioButton3"; this.radioButton3.TabIndex = 6; this.radioButton3.Text = "Blue"; // // button1 // this.button1.Location = new System.Drawing.Point(8, 280); this.button1.Name = "button1"; this.button1.Size = new System.Drawing.Size(112, 32); this.button1.TabIndex = 4; this.button1.Text = "Draw"; this.button1.Click += new System.EventHandler(this.button1_Click); // // Form1 // this.AutoScaleBaseSize = new System.Drawing.Size(5, 13); this.ClientSize = new System.Drawing.Size(408, 317); this.Controls.AddRange(new System.Windows.Forms.Control[] { this.button1, this.checkBox3, this.checkBox2, this.checkBox1, this.groupBox1}); this.Name = "Form1"; this.Text = "CheckBox and RadioButton Sample"; this.groupBox1.ResumeLayout(false); this.ResumeLayout(false); } [STAThread] static void Main() { Application.Run(new Form1()); } private void groupBox1_Enter(object sender, System.EventArgs e) { Console.WriteLine("group box enter event"); } private void radioButton1_CheckedChanged(object sender, System.EventArgs e) { Console.WriteLine("Radio Button checked changed event"); } private void button1_Click(object sender, System.EventArgs e) { Graphics g = Graphics.FromHwnd(this.Handle); String str = ""; Rectangle rc = new Rectangle(150, 50, 250, 250); if(radioButton1.Checked) { str = "red"; } if(radioButton2.Checked) { str+="Green"; } if(radioButton3.Checked) { str+="Blue"; } if (checkBox1.Checked) { str+="Ellipse"; } if (checkBox2.Checked) { str += "Rectangle"; } if (checkBox3.Checked) { g.FillRectangle(new SolidBrush(Color.White), rc); g.DrawString(str, new Font("Verdana", 12), new SolidBrush(Color.Black), rc); } } }
1. | CheckBox with Label | ||
2. | CheckBox Image | ||
3. | Subclass CheckBox | ||
4. | CheckedChanged Event | ||
5. | CheckBox click (Selected/Unselected) event | ||
6. | CheckButton on a Form | ||
7. | CheckBox Style |